Skip to Content
Version 268.27 by Xiaoling on 2024/01/17 10:38
Show last authors
1 (% style="text-align:center" %)
2 [[image:image-20230717152014-10.png||height="575" width="339"]]
3
4
5
6 **Table of Contents:**
7
8 {{toc/}}
9
10
11
12
13
14 = 1. Introduction =
15
16 == 1.1 What is LHT65N LoRaWAN (% style="display:none" %) (%%)Temperature & Humidity Sensor ==
17
18
19 (((
20 The Dragino LHT65N (% style="display:none" %) (%%)Temperature & Humidity sensor is a Long Range LoRaWAN Sensor. It includes a (% style="color:#4f81bd" %)**built-in Temperature & Humidity sensor**(%%) and has an external sensor connector to connect to an external (% style="color:#4f81bd" %)**Temperature Sensor.**
21 )))
22
23 (((
24 The LHT65N allows users to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, building automation, and so on.
25 )))
26
27 (((
28 LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
29 )))
30
31 (((
32 LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
33 )))
34
35 (((
36 LHT65N supports (% style="color:#4f81bd" %)**Datalog Feature**(%%). It will record the data when there is no network coverage and users can retrieve the sensor value later to ensure no miss for every sensor reading.
37 )))
38
39 (((
40 *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
41 )))
42
43
44 == 1.2 Features ==
45
46
47 * LoRaWAN v1.0.3 Class A protocol
48 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
49 * AT Commands to change parameters
50 * Remote configure parameters via LoRaWAN Downlink
51 * Firmware upgradeable via program port
52 * Built-in 2400mAh battery for up to 10 years of use.
53 * Built-in Temperature & Humidity sensor
54 * Optional External Sensors
55 * Tri-color LED to indicate working status
56 * Datalog feature (Max 3328 records)
57
58 == 1.3 Specification ==
59
60
61 (% style="color:#037691" %)**Built-in Temperature Sensor:**
62
63 * Resolution: 0.01 °C
64 * Accuracy Tolerance : Typ ±0.3 °C
65 * Long Term Drift: < 0.02 °C/yr
66 * Operating Range: -40 ~~ 85 °C
67
68 (% style="color:#037691" %)**Built-in Humidity Sensor:**
69
70 * Resolution: 0.04 %RH
71 * Accuracy Tolerance : Typ ±3 %RH
72 * Long Term Drift: < 0.02 °C/yr
73 * Operating Range: 0 ~~ 96 %RH
74
75 (% style="color:#037691" %)**External Temperature Sensor:**
76
77 * Resolution: 0.0625 °C
78 * ±0.5°C accuracy from -10°C to +85°C
79 * ±2°C accuracy from -55°C to +125°C
80 * Operating Range: -55 °C ~~ 125 °C
81
82 = 2. Connect LHT65N to IoT Server =
83
84 == 2.1 How does LHT65N work? ==
85
86
87 (((
88 LHT65N is configured as LoRaWAN OTAA Class A mode by default. Each LHT65N is shipped with a worldwide unique set of OTAA keys. To use LHT65N in a LoRaWAN network, first, we need to put the OTAA keys in LoRaWAN Network Server and then activate LHT65N.
89 )))
90
91 (((
92 If LHT65N is under the coverage of this LoRaWAN network. LHT65N can join the LoRaWAN network automatically. After successfully joining, LHT65N will start to measure environment temperature and humidity, and start to transmit sensor data to the LoRaWAN server. The default period for each uplink is 20 minutes.
93 )))
94
95
96 == 2.2 How to Activate LHT65N? ==
97
98
99 (((
100 The LHT65N has two working modes:
101 )))
102
103 * (((
104 (% style="color:blue" %)**Deep Sleep Mode**(%%): LHT65N doesn't have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.
105 )))
106 * (((
107 (% style="color:blue" %)**Working Mode**(%%):  In this mode, LHT65N works as LoRaWAN Sensor mode to Join LoRaWAN network and send out the sensor data to the server. Between each sampling/tx/rx periodically, LHT65N will be in STOP mode (IDLE mode), in STOP mode, LHT65N has the same power consumption as Deep Sleep mode. 
108 )))
109
110 (((
111 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
112 )))
113
114
115 [[image:image-20230717144740-2.png||height="391" width="267"]]
116
117 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
118 |=(% style="width: 167px;background-color:#4F81BD;color:white" %)**Behavior on ACT**|=(% style="width: 117px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width: 226px;background-color:#4F81BD;color:white" %)**Action**
119 |(% style="background-color:#f2f2f2; width:167px" %)Pressing ACT between 1s < time < 3s|(% style="background-color:#f2f2f2; width:117px" %)Test uplink status|(% style="background-color:#f2f2f2; width:225px" %)(((
120 If LHT65N is already Joined to rhe LoRaWAN network, LHT65N will send an uplink packet, if LHT65N has external sensor connected,(% style="color:blue" %)**Blue led** (%%)will blink once. If LHT65N has not external sensor, (% style="color:red" %)**Red led**(%%) will blink once.
121 )))
122 |(% style="background-color:#f2f2f2; width:167px" %)Pressing ACT for more than 3s|(% style="background-color:#f2f2f2; width:117px" %)Active Device|(% style="background-color:#f2f2f2; width:225px" %)(((
123 (% style="background-color:#f2f2f2; color:green" %)**Green led**(%%) will fast blink 5 times, LHT65N will enter working mode and start to JOIN LoRaWAN network.
124 (% style="background-color:#f2f2f2; color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after join in network.
125 )))
126 |(% style="background-color:#f2f2f2; width:167px" %)Fast press ACT 5 times.|(% style="background-color:#f2f2f2; width:117px" %)Deactivate Device|(% style="background-color:#f2f2f2; width:225px" %)(% style="color:red" %)**Red led**(%%) will solid on for 5 seconds. Means LHT65N is in Deep Sleep Mode.
127
128 == 2.3 Example to join LoRaWAN network ==
129
130
131 (% class="wikigeneratedid" %)
132 This section shows an example of how to join the TTN V3 LoRaWAN IoT server. Use with other LoRaWAN IoT servers is of a similar procedure.
133
134
135 (% class="wikigeneratedid" %)
136 [[image:image-20220522232442-1.png||_mstalt="427830" height="387" width="648"]]
137
138
139 (((
140 Assume the LPS8N is already set to connect to [[TTN V3 network>>url:https://eu1.cloud.thethings.network||_mstvisible="2"]], So it provides network coverage for LHT65N. Next we need to add the LHT65N device in TTN V3:
141 )))
142
143
144 === 2.3.1 Step 1: Create Device n TTN ===
145
146
147 (((
148 Create a device in TTN V3 with the OTAA keys from LHT65N.
149 )))
150
151 (((
152 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
153 )))
154
155 [[image:image-20230426083319-1.png||height="258" width="556"]]
156
157 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
158
159 Add APP EUI in the application.
160
161
162 [[image:image-20220522232916-3.png||_mstalt="430495"]]
163
164
165 [[image:image-20220522232932-4.png||_mstalt="430157"]]
166
167
168 [[image:image-20220522232954-5.png||_mstalt="431847"]]
169
170
171
172 (% style="color:red" %)**Note: LHT65N use same payload as LHT65.**
173
174
175 [[image:image-20220522233026-6.png||_mstalt="429403"]]
176
177
178 Input APP EUI,  APP KEY and DEV EUI:
179
180
181 [[image:image-20220522233118-7.png||_mstalt="430430"]]
182
183
184 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
185
186
187 (((
188 Use ACT button to activate LHT65N and it will auto-join to the TTN V3 network. After join success, it will start to upload sensor data to TTN V3 and user can see in the panel.
189 )))
190
191 [[image:image-20220522233300-8.png||_mstalt="428389" height="219" width="722"]]
192
193
194 == 2.4 Uplink Payload (Fport~=2) ==
195
196
197 (((
198 The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and (% style="color:#4f81bd" %)**every 20 minutes**(%%) send one uplink by default.
199 )))
200
201 (((
202 After each uplink, the (% style="color:blue" %)**BLUE LED**(%%) will blink once.
203 )))
204
205 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:390px" %)
206 |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
207 **Size(bytes)**
208 )))|=(% style="width: 30px;background-color:#4F81BD;color:white" %)(((
209 **2**
210 )))|=(% style="width: 100px;background-color:#4F81BD;color:white" %)(((
211 **2**
212 )))|=(% style="width: 100px;background-color:#4F81BD;color:white" %)(((
213 **2**
214 )))|=(% style="width: 50px;background-color:#4F81BD;color:white" %)(((
215 **1**
216 )))|=(% style="width: 50px;background-color:#4F81BD;color:white" %)(((
217 **4**
218 )))
219 |(% style="width:97px" %)(((
220 Value
221 )))|(% style="width:39px" %)(((
222 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo"]]
223 )))|(% style="width:100px" %)(((
224 (((
225 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
226 )))
227 )))|(% style="width:77px" %)(((
228 (((
229 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
230 )))
231 )))|(% style="width:47px" %)(((
232 [[Ext>>||anchor="H2.4.5Ext23"]] #
233 )))|(% style="width:51px" %)(((
234 [[Ext value>>||anchor="H2.4.6Extvalue"]]
235 )))
236
237 * The First 6 bytes: has fix meanings for every LHT65N.
238
239 * The 7th byte (EXT #): defines the external sensor model.
240
241 * The 8^^th^^ ~~ 11^^th^^ byte: the value for external sensor value. The definition is based on external sensor type. (If EXT=0, there won't be these four bytes.)
242
243 === 2.4.1 Decoder in TTN V3 ===
244
245
246 When the uplink payload arrives TTNv3, it shows HEX format and not friendly to read. We can add LHT65N decoder in TTNv3 for friendly reading.
247
248 Below is the position to put the decoder and LHT65N decoder can be download from here: [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
249
250
251 [[image:image-20220522234118-10.png||_mstalt="451464" height="353" width="729"]]
252
253
254 === 2.4.2 BAT-Battery Info ===
255
256
257 These two bytes of BAT include the battery state and the actually voltage.
258
259 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:477px" %)
260 |=(% style="width: 69px; background-color:#4F81BD;color:white" %)(((
261 **Bit(bit)**
262 )))|=(% style="width: 253px;background-color:#4F81BD;color:white" %)[15:14]|=(% style="width: 155px;background-color:#4F81BD;color:white" %)[13:0]
263 |(% style="width:66px" %)(((
264 Value
265 )))|(% style="width:250px" %)(((
266 BAT Status
267 00(b): Ultra Low ( BAT <= 2.50v)
268 01(b): Low (2.50v <=BAT <= 2.55v)
269 10(b): OK (2.55v <= BAT <=2.65v)
270 11(b): Good (BAT >= 2.65v)
271 )))|(% style="width:152px" %)Actually BAT voltage
272
273 **(b)stands for binary**
274
275
276 [[image:image-20220522235639-1.png||_mstalt="431392" height="139" width="727"]]
277
278
279 Check the battery voltage for LHT65N.
280
281 * BAT status=(0Xcba4>>14)&0xFF=11 (BIN) ，very good
282
283 * Battery Voltage =0xCBA4&0x3FFF=0x0BA4=2980mV
284
285 === 2.4.3 Built-in Temperature ===
286
287
288 [[image:image-20220522235639-2.png||_mstalt="431756" height="138" width="722"]]
289
290 * Temperature:  0x0ABB/100=27.47℃
291
292 [[image:image-20220522235639-3.png||_mstalt="432120"]]
293
294 * Temperature:  (0xF5C6-65536)/100=-26.18℃
295
296 === 2.4.4 Built-in Humidity ===
297
298
299 [[image:image-20220522235639-4.png||_mstalt="432484" height="138" width="722"]]
300
301 * Humidity:    0x025C/10=60.4%
302
303 === 2.4.5 Ext # ===
304
305
306 Bytes for External Sensor:
307
308 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:425px" %)
309 |=(% style="width: 102px; background-color:#4F81BD;color:white" %)**EXT # **Value|=(% style="width: 323px;background-color:#4F81BD;color:white" %)External Sensor Type
310 |(% style="width:102px" %)0x01|(% style="width:319px" %)Sensor E3, Temperature Sensor
311 |(% style="width:102px" %)0x09|(% style="width:319px" %)Sensor E3, Temperature Sensor, Datalog Mod
312 |(% style="width:102px" %)0x06|(% style="width:319px" %)ADC Sensor(use with E2 Cable)
313 |(% style="width:102px" %)0x02|(% style="width:319px" %)TMP117 Sensor
314 |(% style="width:102px" %)0x11|(% style="width:319px" %)SHT31 Sensor
315 |(% style="width:102px" %)0x04|(% style="width:319px" %)Interrupt Mode
316 |(% style="width:102px" %)0x08|(% style="width:319px" %)Counting Mode
317 |(% style="width:102px" %)0x10|(% style="width:319px" %)E2 sensor (TMP117)with Unix Timestamp
318
319 === 2.4.6 Ext value ===
320
321 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
322
323
324 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
325 |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
326 **Size(bytes)**
327 )))|=(% style="width: 80px;background-color:#4F81BD;color:white" %)(((
328 **2**
329 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
330 2
331 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
332 **2**
333 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
334 1
335 )))|=(% style="width: 80px;background-color:#4F81BD;color:white" %)(((
336 2
337 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
338 2
339 )))
340 |(% style="width:110px" %)(((
341 Value
342 )))|(% style="width:71px" %)(((
343 BAT & BAT Status
344 )))|(% style="width:99px" %)TempC_SHT|(% style="width:132px" %)Hum_SHT|(% style="width:54px" %)(((
345 Status & Ext
346 )))|(% style="width:64px" %)TempC_DS|(% style="width:64px" %)senseless
347
348 [[image:image-20220522235639-5.png||_mstalt="432848"]]
349
350
351 * DS18B20 temp=0x0ADD/100=27.81℃
352
353 The last 2 bytes of data are meaningless
354
355
356
357 [[image:image-20220522235639-6.png||_mstalt="433212"]]
358
359
360 * External temperature= (0xF54F-65536)/100=-27.37℃
361
362 F54F :  (F54F & 8000 == 1) , temp = (F54F - 65536)/100 = 27.37℃
363
364 （0105 & 8000：Judge whether the highest bit is 1, when the highest bit is 1, it is negative）
365
366 The last 2 bytes of data are meaningless
367
368 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
369
370
371 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
372
373
374 (((
375 Timestamp mode is designed for LHT65N with E3 probe, it will send the uplink payload with Unix timestamp. With the limitation of 11 bytes (max distance of AU915/US915/AS923 band), the time stamp mode will be lack of BAT voltage field, instead, it shows the battery status. The payload is as below:
376 )))
377
378 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
379 |=(% style="width: 50px;background-color:#4F81BD;color:white" %)(((
380 **Size(bytes)**
381 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
382 **2**
383 )))|=(% style="width: 120px;background-color:#4F81BD;color:white" %)(((
384 **2**
385 )))|=(% style="width: 120px;background-color:#4F81BD;color:white" %)(((
386 **2**
387 )))|=(% style="width: 50px;background-color:#4F81BD;color:white" %)(((
388 **1**
389 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
390 **4**
391 )))
392 |(% style="width:110px" %)(((
393 Value
394 )))|(% style="width:71px" %)(((
395 External temperature
396 )))|(% style="width:99px" %)(((
397 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
398 )))|(% style="width:132px" %)(((
399 BAT Status & [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
400 )))|(% style="width:54px" %)(((
401 Status & Ext
402 )))|(% style="width:64px" %)(((
403 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
404 )))
405
406 * **Battery status & Built-in Humidity**
407
408 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:461px" %)
409 |=(% style="width: 69px;background-color:#4F81BD;color:white" %)Bit(bit)|=(% style="width: 258px;background-color:#4F81BD;color:white" %)[15:14]|=(% style="width: 134px;background-color:#4F81BD;color:white" %)[11:0]
410 |(% style="width:67px" %)Value|(% style="width:256px" %)(((
411 BAT Status
412 00(b): Ultra Low ( BAT <= 2.50v)
413 01(b): Low  (2.50v <=BAT <= 2.55v)
414 10(b): OK   (2.55v <= BAT <=2.65v)
415 11(b): Good   (BAT >= 2.65v)
416 )))|(% style="width:132px" %)(((
417 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
418 )))
419
420 * **Status & Ext Byte**
421
422 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
423 |(% style="background-color:#4f81bd; color:white; width:60px" %)**Bits**|(% style="background-color:#4f81bd; color:white; width:90px" %)**7**|(% style="background-color:#4f81bd; color:white; width:100px" %)**6**|(% style="background-color:#4f81bd; color:white; width:90px" %)**5**|(% style="background-color:#4f81bd; color:white; width:100px" %)**4**|(% style="background-color:#4f81bd; color:white; width:60px" %)**[3:0]**
424 |(% style="width:96px" %)Status&Ext|(% style="width:124px" %)None-ACK Flag|(% style="width:146px" %)Poll Message FLAG|(% style="width:109px" %)Sync time OK|(% style="width:143px" %)Unix Time Request|(% style="width:106px" %)Ext: 0b(1001)
425
426 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
427 * (% style="color:blue" %)**Sync time OK**: (%%) 1: Set time ok，0: N/A. After time SYNC request is sent, LHT65N will set this bit to 0 until got the time stamp from the application server.
428 * (% style="color:blue" %)**Unix Time Request**:(%%)  1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65N will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)
429
430 ==== 2.4.6.3 Ext~=6, ADC Sensor(use with E2 Cable) ====
431
432
433 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
434 |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
435 **Size(bytes)**
436 )))|=(% style="width: 80px;background-color:#4F81BD;color:white" %)(((
437 **2**
438 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
439 2
440 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
441 **2**
442 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
443 1
444 )))|=(% style="width: 80px;background-color:#4F81BD;color:white" %)(((
445 2
446 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
447 2
448 )))
449 |(% style="width:110px" %)(((
450 Value
451 )))|(% style="width:71px" %)(((
452 BAT & BAT Status
453 )))|(% style="width:99px" %)TempC_SHT|(% style="width:132px" %)Hum_SHT|(% style="width:54px" %)(((
454 Status & Ext
455 )))|(% style="width:64px" %)ADC_Value|(% style="width:64px" %)senseless
456
457 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
458
459 be used to power the external ADC sensor; user can control the power on time for this
460
461 (% style="color:blue" %)**sensor by setting:**
462
463 **AT+EXT=6,timeout**  (% style="color:red" %)**Time to power this sensor, from 0 ~~ 65535ms**
464
465 **For example:**
466
467 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
468
469
470 Or use **downlink command A2** to set the same.
471
472 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
473
474 When the measured output voltage of the sensor is not within the range of 0.1V and 1.1V, the output voltage terminal of the sensor shall be divided The example in the following figure is to reduce the output voltage of the sensor by three times If it is necessary to reduce more times, calculate according to the formula in the figure and connect the corresponding resistance in series.
475
476 [[image:image-20220628150112-1.png||_mstalt="427414" height="241" width="285"]]
477
478
479 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
480
481 [[image:image-20220628150714-4.png||_mstalt="431054"]]
482
483
484 When the voltage collected by ADC_IN1 is less than the minimum range, the minimum range will be used as the output; Similarly, when the collected voltage is greater than the maximum range, the maximum range will be used as the output.
485
486
487 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
488
489 [[image:image-20220628151005-5.png||_mstalt="429546"]]
490
491
492 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
493
494 [[image:image-20220628151056-6.png||_mstalt="431873"]]
495
496
497 3) Within range
498
499 [[image:image-20220628151143-7.png||_mstalt="431210"]]
500
501
502
503 ==== 2.4.6.4 Ext~=2 TMP117 Sensor(Since Firmware v1.3) ====
504
505
506 [[image:image-20230717151328-8.png]]
507
508
509 (% style="color:blue" %)**Ext=2,Temperature Sensor(TMP117):**
510
511
512 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
513 |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
514 **Size(bytes)**
515 )))|=(% style="width: 80px;background-color:#4F81BD;color:white" %)(((
516 **2**
517 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
518 2
519 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
520 **2**
521 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
522 1
523 )))|=(% style="width: 80px;background-color:#4F81BD;color:white" %)(((
524 2
525 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
526 2
527 )))
528 |(% style="width:110px" %)(((
529 Value
530 )))|(% style="width:71px" %)(((
531 BAT & BAT Status
532 )))|(% style="width:99px" %)TempC_SHT|(% style="width:132px" %)Hum_SHT|(% style="width:54px" %)(((
533 Status & Ext
534 )))|(% style="width:64px" %)TempC_Temp117|(% style="width:64px" %)senseless
535
536 [[image:image-20220906102307-7.png||_mstalt="430443"]]
537
538 (% style="color:blue" %)**Interrupt Mode and Counting Mode:**
539
540 The external cable NE2 can be use for MOD4 and MOD8
541
542
543
544
545 ==== 2.4.6.5 Ext~=11 SHT31 Sensor (Since Firmware v1.4.1) ====
546
547
548 [[image:image-20230717151245-7.png]]
549
550 (% style="color:blue" %)**Ext=11,Temperature & Humidity Sensor(SHT31):**
551
552 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
553 |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
554 **Size(bytes)**
555 )))|=(% style="width: 80px;background-color:#4F81BD;color:white" %)(((
556 **2**
557 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
558 2
559 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
560 **2**
561 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
562 1
563 )))|=(% style="width: 80px;background-color:#4F81BD;color:white" %)(((
564 2
565 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
566 2
567 )))
568 |(% style="width:110px" %)(((
569 Value
570 )))|(% style="width:71px" %)(((
571 BAT & BAT Status
572 )))|(% style="width:99px" %)TempC_SHT|(% style="width:132px" %)Hum_SHT|(% style="width:54px" %)(((
573 Status & Ext
574 )))|(% style="width:64px" %)Ext_TempC_SHT|(% style="width:64px" %)Ext_Hum_SHT
575
576 [[image:SHT31.png]]
577
578
579
580 ==== 2.4.6.6 Ext~=4 Interrupt Mode(Since Firmware v1.3) ====
581
582
583 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will send an uplink when there is a trigger.**
584
585
586 (% style="color:blue" %)**Interrupt Mode can be used to connect to external interrupt sensors such as:**
587
588 (% style="color:#037691" %)**Case 1: Door Sensor.** (%%)3.3v Out for such sensor is just to detect Open/Close.
589
590 In Open State, the power consumption is the same as if there is no probe
591
592 In Close state, the power consumption will be 3uA higher than normal.
593
594 [[image:image-20220906100852-1.png||_mstalt="429156" height="205" width="377"]]
595
596
597 Ext=4,Interrupt Sensor：
598
599 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:504px" %)
600 |(% style="width:101px" %)(((
601 **AT+EXT=4,1**
602 )))|(% style="width:395px" %)(((
603 **Sent uplink packet in both rising and falling interrupt**
604 )))
605 |(% style="width:101px" %)(((
606 **AT+EXT=4,2**
607 )))|(% style="width:395px" %)(((
608 **Sent uplink packet only in falling interrupt**
609 )))
610 |(% style="width:101px" %)(((
611 **AT+EXT=4,3**
612 )))|(% style="width:395px" %)(((
613 **Sent uplink packet only in rising interrupt**
614 )))
615
616 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
617 |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
618 **Size(bytes)**
619 )))|=(% style="width: 55px;background-color:#4F81BD;color:white" %)(((
620 **2**
621 )))|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
622 2
623 )))|=(% style="width: 50px;background-color:#4F81BD;color:white" %)(((
624 **2**
625 )))|=(% style="width: 55px;background-color:#4F81BD;color:white" %)(((
626 1
627 )))|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
628 1
629 )))|=(% style="width: 55px;background-color:#4F81BD;color:white" %)(((
630 1
631 )))|=(% style="width: 55px;background-color:#4F81BD;color:white" %)(((
632 3
633 )))|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
634 3
635 )))
636 |(% style="width:110px" %)(((
637 Value
638 )))|(% style="width:71px" %)(((
639 BAT & BAT Status
640 )))|(% style="width:99px" %)TempC_SHT|(% style="width:132px" %)Hum_SHT|(% style="width:54px" %)(((
641 Status & Ext
642 )))|(% style="width:64px" %)Exti_pin_level|(% style="width:64px" %)Exti_status|(% style="width:64px" %)Exit_count|(% style="width:64px" %)Exit_duration
643
644 Trigger by falling edge:
645
646 [[image:image-20220906101145-2.png||_mstalt="428324"]]
647
648
649 Trigger by raising edge:
650
651 [[image:image-20220906101145-3.png||_mstalt="428688"]]
652
653
654
655 ==== 2.4.6.7 Ext~=8 Counting Mode(Since Firmware v1.3) ====
656
657
658 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will count for every interrupt and uplink periodically.**
659
660
661 (% style="color:blue" %)**Case 1**(%%):  Low power consumption Flow Sensor, such flow sensor has pulse output and the power consumption in uA level and can be powered by LHT65N.
662
663 [[image:image-20220906101320-4.png||_mstalt="427336" height="366" width="698"]]
664
665
666 (% style="color:blue" %)**Case 2**(%%):  Normal Flow Sensor: Such flow sensor has higher power consumption and is not suitable to be powered by LHT65N. It is powered by external power and output <3.3v pulse
667
668 [[image:image-20220906101320-5.png||_mstalt="427700" height="353" width="696"]]
669
670
671 Ext=8, Counting Sensor ( 4 bytes)：
672
673 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:330px" %)
674 |(% style="width:131px" %)(((
675 **AT+EXT=8,0**
676 )))|(% style="width:195px" %)(((
677 **Count at falling interrupt**
678 )))
679 |(% style="width:131px" %)(((
680 **AT+EXT=8,1**
681 )))|(% style="width:195px" %)(((
682 **Count at rising interrupt**
683 )))
684 |(% style="width:131px" %)(((
685 **AT+SETCNT=60**
686 )))|(% style="width:195px" %)(((
687 **Sent current count to 60**
688 )))
689
690 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:420px" %)
691 |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
692 **Size(bytes)**
693 )))|=(% style="width: 80px;background-color:#4F81BD;color:white" %)(((
694 **2**
695 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
696 2
697 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
698 **2**
699 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
700 1
701 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
702 4
703 )))
704 |(% style="width:110px" %)(((
705 Value
706 )))|(% style="width:71px" %)(((
707 BAT & BAT Status
708 )))|(% style="width:99px" %)TempC_SHT|(% style="width:132px" %)Hum_SHT|(% style="width:54px" %)(((
709 Status & Ext
710 )))|(% style="width:64px" %)Exit_count
711
712 [[image:image-20220906101320-6.png||_mstalt="428064"]]
713
714
715 (% style="color:blue" %)**A2 downlink Command：**
716
717 A2 02:  Same as AT+EXT=2 (AT+EXT= second byte)
718
719 A2 06 01 F4:  Same as AT+EXT=6,500 (AT+EXT= second byte, third and fourth bytes)
720
721 A2 04 02:  Same as AT+EXT=4,2 (AT+EXT= second byte, third byte)
722
723 A2 08 01 00:  Same as AT+EXT=8,0 (AT+EXT= second byte, fourth byte)
724
725 A2 08 02 00 00 00 3C:  Same as AT+ SETCNT=60  (AT+ SETCNT = 4th byte and 5th byte and 6th byte and 7th byte)
726
727
728 ==== 2.4.6.8 Ext~=10, E2 sensor (TMP117)with Unix Timestamp(Since firmware V1.3.2) ====
729
730
731 (((
732 Timestamp mode is designed for LHT65N with E2 probe, it will send the uplink payload with Unix timestamp. With the limitation of 11 bytes (max distance of AU915/US915/AS923 band), the time stamp mode will be lack of BAT voltage field, instead, it shows the battery status. The payload is as below:
733 )))
734
735 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
736 |=(% style="width: 50px;background-color:#4F81BD;color:white" %)(((
737 **Size(bytes)**
738 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
739 **2**
740 )))|=(% style="width: 120px;background-color:#4F81BD;color:white" %)(((
741 **2**
742 )))|=(% style="width: 120px;background-color:#4F81BD;color:white" %)(((
743 **2**
744 )))|=(% style="width: 50px;background-color:#4F81BD;color:white" %)(((
745 **1**
746 )))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
747 **4**
748 )))
749 |(% style="width:110px" %)(((
750 Value
751 )))|(% style="width:71px" %)(((
752 External temperature
753 )))|(% style="width:99px" %)(((
754 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
755 )))|(% style="width:132px" %)(((
756 BAT Status & [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
757 )))|(% style="width:54px" %)(((
758 Status & Ext
759 )))|(% style="width:64px" %)(((
760 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
761 )))
762
763 * **Battery status & Built-in Humidity**
764
765 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:461px" %)
766 |=(% style="width: 69px;background-color:#4F81BD;color:white" %)Bit(bit)|=(% style="width: 258px;background-color:#4F81BD;color:white" %)[15:14]|=(% style="width: 134px;background-color:#4F81BD;color:white" %)[11:0]
767 |(% style="width:67px" %)Value|(% style="width:256px" %)(((
768 BAT Status
769 00(b): Ultra Low ( BAT <= 2.50v)
770 01(b): Low  (2.50v <=BAT <= 2.55v)
771 10(b): OK   (2.55v <= BAT <=2.65v)
772 11(b): Good   (BAT >= 2.65v)
773 )))|(% style="width:132px" %)(((
774 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
775 )))
776
777 * **Status & Ext Byte**
778
779 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
780 |(% style="background-color:#4f81bd; color:white; width:60px" %)**Bits**|(% style="background-color:#4f81bd; color:white; width:90px" %)**7**|(% style="background-color:#4f81bd; color:white; width:100px" %)**6**|(% style="background-color:#4f81bd; color:white; width:90px" %)**5**|(% style="background-color:#4f81bd; color:white; width:100px" %)**4**|(% style="background-color:#4f81bd; color:white; width:60px" %)**[3:0]**
781 |(% style="width:96px" %)Status&Ext|(% style="width:124px" %)None-ACK Flag|(% style="width:146px" %)Poll Message FLAG|(% style="width:109px" %)Sync time OK|(% style="width:143px" %)Unix Time Request|(% style="width:106px" %)Ext: 0b(1001)
782
783 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
784 * (% style="color:blue" %)**Sync time OK**: (%%) 1: Set time ok, 0: N/A. After time SYNC request is sent, LHT65N will set this bit to 0 until got the time stamp from the application server.
785 * (% style="color:blue" %)**Unix Time Request**:(%%)  1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65N will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)
786
787 == 2.5 Show data on Datacake ==
788
789
790 (((
791 Datacake IoT platform provides a human-friendly interface to show the sensor data, once we have sensor data in TTN V3, we can use Datacake to connect to TTN V3 and see the data in Datacake. Below are the steps:
792 )))
793
794
795 (((
796 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
797 )))
798
799 (((
800 (% style="color:blue" %)**Step 2**(%%): Configure your Application to forward data to Datacake you will need to add integration. Go to TTN V3 Console ~-~-> Applications ~-~-> Integrations ~-~-> Add Integrations.
801 )))
802
803
804 (((
805 Add Datacake:
806 )))
807
808
809 [[image:image-20220523000825-7.png||_mstalt="429884" height="262" width="583"]]
810
811
812
813 Select default key as Access Key:
814
815
816 [[image:image-20220523000825-8.png||_mstalt="430248" height="453" width="406"]]
817
818
819 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/]]) , add LHT65 device.
820
821
822 [[image:image-20220523000825-9.png||_mstalt="430612" height="366" width="392"]]
823
824
825 [[image:image-20220523000825-10.png||_mstalt="450619" height="413" width="728"]]
826
827
828 == 2.6 Datalog Feature ==
829
830
831 (((
832 Datalog Feature is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, LHT65N will store the reading for future retrieving purposes. There are two ways for IoT servers to get datalog from LHT65N.
833 )))
834
835
836 === 2.6.1 Ways to get datalog via LoRaWAN ===
837
838
839 There are two methods:
840
841 (% style="color:blue" %)**Method 1:** (%%)IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specified time range.
842
843
844 (% style="color:blue" %)**Method 2: **(%%)Set [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]], LHT65N will wait for ACK for every uplink, when there is no LoRaWAN network, LHT65N will mark these records with non-ack messages and store the sensor data, and it will send all messages (10s interval) after the network recovery.
845
846
847 (% style="color:red" %)**Note for method 2:**
848
849 * a) LHT65N will do an ACK check for data records sending to make sure every data arrive server.
850 * b) LHT65N will send data in **CONFIRMED Mode** when PNACKMD=1, but LHT65N won't re-transmit the packet if it doesn't get ACK, it will just mark it as a NONE-ACK message. In a future uplink if LHT65N gets a ACK, LHT65N will consider there is a network connection and resend all NONE-ACK Message.
851
852 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
853
854
855 [[image:image-20220703111700-2.png||_mstalt="426244" height="381" width="1119"]]
856
857
858 === 2.6.2 Unix TimeStamp ===
859
860
861 LHT65N uses Unix TimeStamp format based on
862
863
864 [[image:image-20220523001219-11.png||_mstalt="450450" height="97" width="627"]]
865
866
867
868 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
869
870 Below is the converter example
871
872 [[image:image-20220523001219-12.png||_mstalt="450827" height="298" width="720"]]
873
874
875 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
876
877
878 === 2.6.3 Set Device Time ===
879
880
881 (((
882 (% style="color:blue" %)**There are two ways to set device's time:**
883 )))
884
885 (((
886 **1.  Through LoRaWAN MAC Command (Default settings)**
887 )))
888
889 (((
890 User need to set SYNCMOD=1 to enable sync time via MAC command.
891 )))
892
893 (((
894 Once LHT65N Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to LHT65N. If LHT65N fails to get the time from the server, LHT65N will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).
895 )))
896
897 (((
898 (% style="color:red" %)**Note: LoRaWAN Server need to support LoRaWAN v1.0.3(MAC v1.0.3) or higher to support this MAC command feature, Chirpstack,TTN V3 v3 and loriot support but TTN V3 v2 doesn't support. If server doesn't support this command, it will through away uplink packet with this command, so user will lose the packet with time request for TTN V3 v2 if SYNCMOD=1.**
899 )))
900
901
902 (((
903 **2. Manually Set Time**
904 )))
905
906 (((
907 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
908 )))
909
910
911 === 2.6.4 Poll sensor value ===
912
913
914 User can poll sensor value based on timestamps from the server. Below is the downlink command.
915
916 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:428px" %)
917 |(% style="background-color:#4f81bd; color:white; width:59px" %)**1byte**|(% style="background-color:#4f81bd; color:white; width:128px" %)**4bytes**|(% style="background-color:#4f81bd; color:white; width:124px" %)**4bytes**|(% style="background-color:#4f81bd; color:white; width:117px" %)**1byte**
918 |(% style="width:58px" %)31|(% style="width:128px" %)Timestamp start|(% style="width:123px" %)Timestamp end|(% style="width:116px" %)Uplink Interval
919
920 Timestamp start and Timestamp end use Unix TimeStamp format as mentioned above. Devices will reply with all data log during this time period, use the uplink interval.
921
922 For example, downlink command (% _mstmutation="1" %)**31 5FC5F350 5FC6 0160 05**(%%)
923
924 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00's data
925
926 Uplink Internal =5s, means LHT65N will send one packet every 5s. range 5~~255s.
927
928
929 === 2.6.5 Datalog Uplink payload ===
930
931
932 The Datalog poll reply uplink will use below payload format.
933
934 **Retrieval data payload:**
935
936 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
937 |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
938 **Size(bytes)**
939 )))|=(% style="width: 90px;background-color:#4F81BD;color:white" %)**2**|=(% style="width: 90px;background-color:#4F81BD;color:white" %)**2**|=(% style="width: 70px;background-color:#4F81BD;color:white" %)**2**|=(% style="width: 100px;background-color:#4F81BD;color:white" %)**1**|=(% style="width: 70px;background-color:#4F81BD;color:white" %)**4**
940 |(% style="width:97px" %)Value|(% style="width:123px" %)[[External sensor data>>||anchor="H2.4.6Extvalue"]]|(% style="width:108px" %)[[Built In Temperature>>||anchor="H2.4.3Built-inTemperature"]]|(% style="width:133px" %)[[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]|(% style="width:159px" %)Poll message flag & Ext|(% style="width:80px" %)[[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
941
942 **Poll message flag & Ext:**
943
944 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
945 |=(% style="width: 60px;background-color:#4F81BD;color:white" %)**Bits**|(% style="background-color:#4f81bd; color:white; width:90px" %)**7**|(% style="background-color:#4f81bd; color:white; width:100px" %)**6**|(% style="background-color:#4f81bd; color:white; width:90px" %)**5**|(% style="background-color:#4f81bd; color:white; width:100px" %)**4**|(% style="background-color:#4f81bd; color:white; width:60px" %)**[3:0]**
946 |=(% style="width: 96px" %)Status&Ext|(% style="width:124px" %)No ACK Message|(% style="width:146px" %)Poll Message Flag|(% style="width:109px" %)Sync time OK|(% style="width:143px" %)Unix Time Request|(% style="width:106px" %)Ext: 0b(1001)
947
948 (% style="color:blue" %)**No ACK Message**(%%):  1: This message means this payload is fromn Uplink Message which doesn't get ACK from the server before ( for [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]] feature)
949
950 (% style="color:blue" %)**Poll Message Flag**(%%): 1: This message is a poll message reply.
951
952 * Poll Message Flag is set to 1.
953
954 * Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
955
956 For example, in US915 band, the max payload for different DR is:
957
958 (% style="color:blue" %)**a) DR0:** (%%)max is 11 bytes so one entry of data
959
960 (% style="color:blue" %)**b) DR1:**(%%) max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
961
962 (% style="color:blue" %)**c) DR2:**(%%) total payload includes 11 entries of data
963
964 (% style="color:blue" %)**d) DR3: **(%%)total payload includes 22 entries of data.
965
966 If devise doesn't have any data in the polling time. Device will uplink 11 bytes of 0   
967
968
969 **Example:**
970
971 If LHT65N has below data inside Flash:
972
973 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
974 |=(% style="width: 88px; background-color:#4F81BD;color:white" %)Flash Add|=(% style="width: 132px; background-color:#4F81BD;color:white" %)**Unix Time**|=(% style="width: 40px; background-color:#4F81BD;color:white" %)**Ext**|=(% style="width: 105px; background-color:#4F81BD;color:white" %)**BAT voltage**|=(% style="width: 145px; background-color:#4F81BD;color:white" %)**Value**
975 |(% style="width:89px" %)80196E0|(% style="width:133px" %)21/1/19 04:27:03|(% style="width:42px" %)1|(% style="width:103px" %)3145|(% style="width:131px" %)sht temp=22.00 sht hum=32.6 ds temp=327.67
976 |(% style="width:89px" %)80196F0|(% style="width:133px" %)21/1/19 04:28:57|(% style="width:42px" %)1|(% style="width:103px" %)3145|(% style="width:131px" %)sht temp=21.90 sht hum=33.1 ds temp=327.67
977 |(% style="width:89px" %)8019600|(% style="width:133px" %)21/1/19 04:30:30|(% style="width:42px" %)1|(% style="width:103px" %)3145|(% style="width:131px" %)sht temp=21.81 sht hum=33.4 ds temp=327.67
978 |(% style="width:89px" %)8019610|(% style="width:133px" %)21/1/19 04:40:30|(% style="width:42px" %)1|(% style="width:103px" %)3145|(% style="width:131px" %)sht temp=21.65 sht hum=33.7 ds temp=327.67
979 |(% style="width:89px" %)8019620|(% style="width:133px" %)21/1/19 04:50:30|(% style="width:42px" %)1|(% style="width:103px" %)3147|(% style="width:131px" %)sht temp=21.55 sht hum=34.1 ds temp=327.67
980 |(% style="width:89px" %)8019630|(% style="width:133px" %)21/1/19 04:00:30|(% style="width:42px" %)1|(% style="width:103px" %)3149|(% style="width:131px" %)sht temp=21.50 sht hum=34.1 ds temp=327.67
981 |(% style="width:89px" %)8019640|(% style="width:133px" %)21/1/19 04:10:30|(% style="width:42px" %)1|(% style="width:103px" %)3149|(% style="width:131px" %)sht temp=21.43 sht hum=34.6 ds temp=327.67
982 |(% style="width:89px" %)8019650|(% style="width:133px" %)21/1/19 04:20:30|(% style="width:42px" %)1|(% style="width:103px" %)3151|(% style="width:131px" %)sht temp=21.35 sht hum=34.9 ds temp=327.67
983
984
985 If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705
986
987 Where : Start time: 60065F97 = time 21/1/19 04:27:03
988
989 Stop time: 60066DA7= time 21/1/19 05:27:03
990
991
992 **LHT65N will uplink this payload.**
993
994 [[image:image-20220523001219-13.png||_mstalt="451204" height="421" style="text-align:left" width="727"]]
995
996
997 __**7FFF089801464160065F97**__ **__7FFF__ __088E__ __014B__ __41__ __60066009__** 7FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
998
999 Where the first 11 bytes is for the first entry:
1000
1001 7FFF089801464160065F97
1002
1003 Ext sensor data=0x7FFF/100=327.67
1004
1005 Temp=0x088E/100=22.00
1006
1007 Hum=0x014B/10=32.6
1008
1009 poll message flag & Ext=0x41,means reply data,Ext=1
1010
1011 Unix time is 0x60066009=1611030423s=21/1/19 04:27:03
1012
1013
1014 == 2.7 Alarm Mode & Feature "Multi sampling, one uplink" ==
1015
1016
1017 (((
1018 when the device is in alarm mode, it checks the built-in sensor temperature for a short time. if the temperature exceeds the preconfigured range, it sends an uplink immediately.
1019 )))
1020
1021 (((
1022 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
1023
1024
1025 === 2.7.1 ALARM MODE ( Since v1.3.1 firmware) ===
1026
1027
1028 **Internal GXHT30 temperature alarm(Acquisition time: fixed at one minute)**
1029
1030 (((
1031 (% class="box infomessage" %)
1032 (((
1033 **AT+WMOD=3**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
1034
1035 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1036
1037 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1038
1039 (% _mstmutation="1" %)**AT+ARTEMP=? **(%%):  Gets the alarm range of the internal temperature sensor(% style="display:none" %)
1040
1041 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1042
1043 **AT+LEDALARM=1** :       Enable LED visual Alarm.
1044 )))
1045 )))
1046
1047 (% style="color:#4f81bd" %)**Downlink Command:**
1048
1049 AT+WMOD=1:  A501  , AT+WMOD=0 :  A600
1050
1051 AT+CITEMP=1 : A60001
1052
1053 AT+ARTEMP=1,60  :  A70001003C
1054
1055 AT+ARTEMP=-16,60 :  A7FFF0003C
1056
1057 AT+LEDALARM=1  :  3601
1058
1059
1060 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1061
1062 Total bytes: 8 bytes
1063
1064 **Example: **AA0100010001003C
1065
1066 WMOD=01
1067
1068 CITEMP=0001
1069
1070 TEMPlow=0001
1071
1072 TEMPhigh=003C
1073
1074
1075 **DS18B20 and TMP117 Threshold Alarm**
1076
1077 **~ AT+WMOD=1,60,-10,20**
1078
1079 (% style="color:#4f81bd" %)**Downlink Command:**
1080
1081 **Example: **A5013CFC180014
1082
1083 MOD=01
1084
1085 CITEMP=3C(S)
1086
1087 TEMPlow=FC18
1088
1089 TEMPhigh=0014
1090
1091
1092 **Fluctuation alarm for DS18B20 and TMP117(Acquisition time: minimum 1s)**
1093
1094 **AT+WMOD=2,60,5** 
1095
1096 (% style="color:#4f81bd" %)**Downlink Command:**
1097
1098 **Example: **A5023C05
1099
1100 MOD=02
1101
1102 CITEMP=3C(S)
1103
1104 temperature fluctuation=05
1105
1106
1107 **Sampling multiple times and uplink together**
1108
1109 **AT+WMOD=3,1,60,20,-16,32,1**   
1110
1111 Explain:
1112
1113 * (% style="color:#037691" %)**parameter1: **(%%)Set Working Mode to **Mode 3**
1114 * (% style="color:#037691" %)**parameter2:**(%%) Set the temperature sampling mode to** 1**(1:DS18B20;2:TMP117;3:** **Internal GXHT30).
1115 * (% style="color:#037691" %)**parameter3: **(%%)Sampling Interval is **60**s.
1116 * (% style="color:#037691" %)**parameter4: **(%%)When there is **20** sampling dats, Device will send these data via one uplink. (max value is 60, means max 60 sampling in one uplink)
1117 * (% style="color:#037691" %)**parameter5 & parameter6: **(%%)Temperature alarm range is **-16** to **32**°C,
1118 * (% style="color:#037691" %)**parameter7:**(%%) 1 to enable temperature alarm, **0** to disable the temperature alarm. If alarm is enabled, a data will be sent immediately  if temperate exceeds the Alarm range.
1119
1120 (% style="color:#4f81bd" %)**Downlink Command:**
1121
1122 **Example: **A50301003C14FFF0002001
1123
1124 MOD=03
1125
1126 TEMP=DS18B20
1127
1128 CITEMP=003C(S)
1129
1130 Total number of acquisitions=14
1131
1132 TEMPlow=FFF0
1133
1134 TEMPhigh=0020
1135
1136 ARTEMP=01
1137
1138
1139 **Uplink payload( Fport=3)**
1140
1141 **Example: CBEA**01**0992**//0A41//**09C4**
1142
1143 BatV=CBEA
1144
1145 TEMP=DS18B20
1146
1147 Temp1=0992  ~/~/ 24.50℃
1148
1149 Temp2=0A41  ~/~/ 26.25℃
1150
1151 Temp3=09C4  ~/~/ 25.00℃
1152
1153 (% style="color:red" %)**Note: This uplink will automatically select the appropriate DR according to the data length**
1154
1155 (% style="color:red" %)** In this mode, the temperature resolution of ds18b20 is 0.25℃ to save power consumption**
1156 )))
1157
1158
1159 === 2.7.2 ALARM MODE ( Before v1.3.1 firmware) ===
1160
1161
1162 (% class="box infomessage" %)
1163 (((
1164 (((
1165 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
1166 )))
1167
1168 (((
1169 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1170 )))
1171
1172 (((
1173 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1174 )))
1175
1176 (((
1177 (% _mstmutation="1" %)**AT+ARTEMP=? **(%%):  Gets the alarm range of the internal temperature sensor(% style="display:none" %)
1178 )))
1179
1180 (((
1181 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1182 )))
1183 )))
1184
1185 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1186
1187 Total bytes: 8 bytes
1188
1189 **Example:**AA0100010001003C
1190
1191 WMOD=01
1192
1193 CITEMP=0001
1194
1195 TEMPlow=0001
1196
1197 TEMPhigh=003C
1198
1199
1200 == 2.8 LED Indicator ==
1201
1202
1203 The LHT65 has a triple color LED which for easy showing different stage .
1204
1205 While user press ACT button, the LED will work as per LED status with ACT button.
1206
1207 In a normal working state:
1208
1209 * For each uplink, the BLUE LED or RED LED will blink once.
1210 BLUE LED when external sensor is connected.
1211 * RED LED when external sensor is not connected
1212 * For each success downlink, the PURPLE LED will blink once
1213
1214 == 2.9 installation ==
1215
1216
1217 [[image:image-20220516231650-1.png||_mstalt="428597" height="436" width="428"]]
1218
1219
1220 = 3. Sensors and Accessories =
1221
1222 == 3.1 E2 Extension Cable ==
1223
1224
1225 [[image:image-20220619092222-1.png||_mstalt="429533" height="182" width="188"]][[image:image-20220619092313-2.png||_mstalt="430222" height="182" width="173"]]
1226
1227
1228 **1m long breakout cable for LHT65N. Features:**
1229
1230 * (((
1231 Use for AT Command, works for both LHT52/LHT65N
1232 )))
1233 * (((
1234 Update firmware for LHT65N, works for both LHT52/LHT65N
1235 )))
1236 * (((
1237 Supports ADC mode to monitor external ADC
1238 )))
1239 * (((
1240 Supports Interrupt mode
1241 )))
1242 * (((
1243 Exposed All pins from the LHT65N Type-C connector.
1244
1245
1246
1247 )))
1248
1249 [[image:image-20220619092421-3.png||_mstalt="430547" height="371" width="529"]]
1250
1251
1252 == 3.2 E3 Temperature Probe ==
1253
1254
1255 [[image:image-20220515080154-4.png||_mstalt="434681" alt="photo-20220515080154-4.png" height="182" width="161"]] [[image:image-20220515080330-5.png||_mstalt="428792" height="201" width="195"]]
1256
1257
1258 Temperature sensor with 2 meters cable long
1259
1260 * Resolution: 0.0625 °C
1261 * ±0.5°C accuracy from -10°C to +85°C
1262 * ±2°C accuracy from -55°C to +125°C
1263 * Operating Range: -40 ~~ 125 °C
1264 * Working voltage 2.35v ~~ 5v
1265
1266 == 3.3 E31F Temperature Probe ==
1267
1268
1269 [[image:65N-E31F-1.jpg||height="169" width="170"]] [[image:image-20230717151424-9.png||height="221" width="204"]](% style="display:none" %)
1270
1271
1272 Temperature sensor with 1 meters cable long
1273
1274
1275 **Built-in Temperature Sensor:**
1276
1277 * Resolution: 0.01 °C
1278 * Accuracy Tolerance : Typ ±0.3 °C
1279 * Long Term Drift: < 0.02 °C/yr
1280 * Operating Range: -40 ~~ 80 °C
1281
1282 **Built-in Humidity Sensor:**
1283
1284 * Resolution: 0.04 % RH
1285 * Accuracy Tolerance : Typ ±3 % RH
1286 * Long Term Drift: < 0.02 °C/yr
1287 * Operating Range: 0 ~~ 96 % RH
1288
1289 **External Temperature Sensor :**
1290
1291 * Resolution: 0.01 °C
1292 * Accuracy Tolerance : Typical ±0.3 °C
1293 * Long Term Drift: < 0.02 °C/yr
1294 * Operating Range: -40 ~~ 125 °C
1295
1296 **External Humidity Sensor :**
1297
1298 * Resolution: 0.04 % RH
1299 * Accuracy Tolerance : Typ ±3 % RH
1300 * Long Term Drift: < 0.02 °C/yr
1301 * Operating Range: 0 ~~ 96 % RH
1302
1303 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1304
1305
1306 (((
1307 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1308 )))
1309
1310 * (((
1311 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1312 )))
1313
1314 * (((
1315 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1316 )))
1317
1318 (((
1319 There are two kinds of commands to configure LHT65N, they are:
1320 )))
1321
1322 * (((
1323 (% style="color:#4f81bd" %)**General Commands**.
1324 )))
1325
1326 (((
1327 These commands are to configure:
1328 )))
1329
1330 1. (((
1331 General system settings like: uplink interval.
1332 )))
1333 1. (((
1334 LoRaWAN protocol & radio-related commands.
1335 )))
1336
1337 (((
1338 They are the same for all Dragino Devices which supports DLWS-005 LoRaWAN Stack(Note~*~*). These commands can be found on the wiki: [[End Device Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
1339 )))
1340
1341 * (((
1342 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1343 )))
1344
1345 (((
1346 These commands are only valid for LHT65N, as below:
1347 )))
1348
1349
1350 == 4.1 Set Transmit Interval Time ==
1351
1352
1353 Feature: Change LoRaWAN End Node Transmit Interval.
1354
1355
1356 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1357
1358 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:501px" %)
1359 |(% style="background-color:#4f81bd; color:white; width:155px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:166px" %)**Function**|(% style="background-color:#4f81bd; color:white; width:180px" %)**Response**
1360 |(% style="width:155px" %)AT+TDC=?|(% style="width:162px" %)Show current transmit Interval|(% style="width:177px" %)30000 OK the interval is 30000ms = 30s
1361 |(% style="width:155px" %)AT+TDC=60000|(% style="width:162px" %)Set Transmit Interval|(% style="width:177px" %)OK Set transmit interval to 60000ms = 60 seconds
1362
1363 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1364
1365 Format: Command Code (0x01) followed by 3 bytes time value.
1366
1367 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
1368
1369 * **Example 1**: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
1370
1371 * **Example 2**: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
1372
1373 == 4.2 Set External Sensor Mode ==
1374
1375
1376 Feature: Change External Sensor Mode.
1377
1378 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1379
1380 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:468px" %)
1381 |(% style="background-color:#4f81bd; color:white; width:155px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:153px" %)**Function**|(% style="background-color:#4f81bd; color:white; width:160px" %)**Response**
1382 |(% style="width:155px" %)AT+EXT=?|(% style="width:151px" %)Get current external sensor mode|(% style="width:158px" %)1 OK External Sensor mode =1
1383 |(% style="width:155px" %)AT+EXT=1|(% colspan="2" rowspan="1" style="width:309px" %)Set external sensor mode to 1
1384 |(% style="width:155px" %)AT+EXT=9|(% colspan="2" rowspan="1" style="width:309px" %)Set to external DS18B20 with timestamp
1385
1386 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1387
1388 Total bytes: 2 ~~ 5 bytes
1389
1390 **Example:**
1391
1392 * 0xA201: Set external sensor type to E1
1393
1394 * 0xA209: Same as AT+EXT=9
1395
1396 * 0xA20702003c: Same as AT+SETCNT=60
1397
1398 == 4.3 Enable/Disable uplink Temperature probe ID ==
1399
1400
1401 (((
1402 Feature: If PID is enabled, device will send the temperature probe ID on:
1403 )))
1404
1405 * (((
1406 First Packet after OTAA Join
1407 )))
1408 * (((
1409 Every 24 hours since the first packet.
1410 )))
1411
1412 (((
1413 PID is default set to disable (0)
1414
1415
1416 )))
1417
1418 (% style="color:#4f81bd" %)**AT Command:**
1419
1420 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:381px" %)
1421 |(% style="background-color:#4f81bd; color:white; width:155px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:138px" %)**Function**|(% style="background-color:#4f81bd; color:white; width:88px" %)**Response**
1422 |(% style="width:155px" %)AT+PID=1|(% style="width:136px" %)Enable PID uplink|(% style="width:86px" %)OK
1423
1424 (% style="color:#4f81bd" %)**Downlink Command:**
1425
1426 * **0xA800**  **~-~->** AT+PID=0
1427 * **0xA801**     **~-~->** AT+PID=1
1428
1429 == 4.4 Set Password ==
1430
1431
1432 Feature: Set device password, max 9 digits
1433
1434 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1435
1436 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:372px" %)
1437 |(% style="background-color:#4f81bd; color:white; width:155px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:128px" %)**Function**|(% style="background-color:#4f81bd; color:white; width:89px" %)**Response**
1438 |(% style="width:155px" %)AT+PWORD=?|(% style="width:124px" %)Show password|(% style="width:86px" %)(((
1439 123456
1440
1441 OK
1442 )))
1443 |(% style="width:155px" %)AT+PWORD=999999|(% style="width:124px" %)Set password|(% style="width:86px" %)OK
1444
1445 (% style="color:#4f81bd" %)**Downlink Command:**
1446
1447 No downlink command for this feature.
1448
1449
1450 == 4.5 Quit AT Command ==
1451
1452
1453 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1454
1455 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1456
1457 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:433px" %)
1458 |(% style="background-color:#4f81bd; color:white; width:155px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:191px" %)**Function**|(% style="background-color:#4f81bd; color:white; width:87px" %)**Response**
1459 |(% style="width:155px" %)AT+DISAT|(% style="width:191px" %)Quit AT Commands mode|(% style="width:86px" %)OK
1460
1461 (% style="color:#4f81bd" %)**Downlink Command:**
1462
1463 No downlink command for this feature.
1464
1465
1466 == 4.6 Set to sleep mode ==
1467
1468
1469 Feature: Set device to sleep mode
1470
1471 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1472 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1473
1474 (% style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1475
1476 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:513px" %)
1477 |(% style="background-color:#4f81bd; color:white; width:155px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:140px" %)**Function**|(% style="background-color:#4f81bd; color:white; width:218px" %)**Response**
1478 |(% style="width:155px" %)AT+SLEEP|(% style="width:139px" %)Set to sleep mode|(% style="width:213px" %)(((
1479 Clear all stored sensor data…
1480
1481 OK
1482 )))
1483
1484 (% style="color:#4f81bd" %)**Downlink Command:**
1485
1486 * There is no downlink command to set to Sleep mode.
1487
1488 == 4.7 Set system time ==
1489
1490
1491 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1492
1493 (% style="color:#4f81bd" %)**AT Command:**
1494
1495 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:506px" %)
1496 |(% style="background-color:#4f81bd; color:white; width:188px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:318px" %)**Function**
1497 |(% style="width:154px" %)AT+TIMESTAMP=1611104352|(% style="width:285px" %)(((
1498 OK
1499
1500 Set System time to 2021-01-20 00:59:12
1501 )))
1502
1503 (% style="color:#4f81bd" %)**Downlink Command:**
1504
1505 0x306007806000  ~/~/  Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1506
1507
1508 == 4.8 Set Time Sync Mode ==
1509
1510
1511 (((
1512 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1513 )))
1514
1515 (((
1516 SYNCMOD is set to 1 by default. If user want to set a different time from LoRaWAN server, user need to set this to 0.
1517 )))
1518
1519 (% style="color:#4f81bd" %)**AT Command:**
1520
1521 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:475px" %)
1522 |(% style="background-color:#4f81bd; color:white; width:158px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:317px" %)**Function**
1523 |(% style="width:156px" %)AT+SYNCMOD=1|(% style="width:315px" %)Enable Sync system time via LoRaWAN MAC Command (DeviceTimeReq)
1524
1525 (% style="color:#4f81bd" %)**Downlink Command:**
1526
1527 0x28 01  ~/~/  Same As AT+SYNCMOD=1
1528 0x28 00  ~/~/  Same As AT+SYNCMOD=0
1529
1530
1531 == 4.9 Set Time Sync Interval ==
1532
1533
1534 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1535
1536 (% style="color:#4f81bd" %)**AT Command:**
1537
1538 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:472px" %)
1539 |(% style="background-color:#4f81bd; color:white; width:158px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:314px" %)**Function**
1540 |(% style="width:156px" %)AT+SYNCTDC=0x0A |(% style="width:311px" %)Set SYNCTDC to 10 (0x0A), so the sync time is 10 days.
1541
1542 (% style="color:#4f81bd" %)**Downlink Command:**
1543
1544 **0x29 0A**  ~/~/ Same as AT+SYNCTDC=0x0A
1545
1546
1547 == 4.10 Get data ==
1548
1549
1550 Feature: Get the current sensor data.
1551
1552 (% style="color:#4f81bd" %)**AT Command:**
1553
1554 * **AT+GETSENSORVALUE=0**      ~/~/ The serial port gets the reading of the current sensor
1555 * **AT+GETSENSORVALUE=1**      ~/~/ The serial port gets the current sensor reading and uploads it.
1556
1557
1558 == 4.11 Print data entries base on page ==
1559
1560
1561 Feature: Print the sector data from start page to stop page (max is 416 pages).
1562
1563 (% style="color:#4f81bd" %)**AT Command: AT+PDTA**
1564
1565 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
1566 |(% style="background-color:#4f81bd; color:white; width:158px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:352px" %)**Function**
1567 |(% style="width:156px" %)(((
1568 AT+PDTA=13
1569 Print page 1 to 3
1570 )))|(% style="width:311px" %)(((
1571 8019500 19/6/26 16:48 1 2992 sht temp=28.21 sht hum=71.5 ds temp=27.31
1572 8019510 19/6/26 16:53 1 2994 sht temp=27.64 sht hum=69.3 ds temp=26.93
1573 8019520 19/6/26 16:58 1 2996 sht temp=28.39 sht hum=72.0 ds temp=27.06
1574 8019530 19/6/26 17:03 1 2996 sht temp=27.97 sht hum=70.4 ds temp=27.12
1575 8019540 19/6/26 17:08 1 2996 sht temp=27.80 sht hum=72.9 ds temp=27.06
1576 8019550 19/6/26 17:13 1 2998 sht temp=27.30 sht hum=72.4 ds temp=26.68
1577 8019560 19/6/26 17:22 1 2992 sht temp=26.27 sht hum=62.3 ds temp=26.56
1578 8019570
1579 8019580
1580 8019590
1581 80195A0
1582 80195B0
1583 80195C0
1584 80195D0
1585 80195E0
1586 80195F0
1587
1588 OK
1589 )))
1590
1591 (% style="color:#4f81bd" %)**Downlink Command:**
1592
1593 No downlink commands for feature
1594
1595
1596 == 4.12 Print last few data entries ==
1597
1598
1599 Feature: Print the last few data entries
1600
1601 (% style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1602
1603 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
1604 |(% style="background-color:#4f81bd; color:white; width:158px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:352px" %)**Function**
1605 |(% style="width:156px" %)(((
1606 AT+PLDTA=5
1607 Print last 5 entries
1608 )))|(% style="width:311px" %)(((
1609 Stop Tx and RTP events when read sensor data
1610 1 19/6/26 13:59 1 3005 sht temp=27.09 sht hum=79.5 ds temp=26.75
1611 2 19/6/26 14:04 1 3007 sht temp=26.65 sht hum=74.8 ds temp=26.43
1612 3 19/6/26 14:09 1 3007 sht temp=26.91 sht hum=77.9 ds temp=26.56
1613 4 19/6/26 14:15 1 3007 sht temp=26.93 sht hum=76.7 ds temp=26.75
1614 5 19/6/26 14:20 1 3007 sht temp=26.78 sht hum=76.6 ds temp=26.43
1615 Start Tx and RTP events
1616 OK
1617 )))
1618
1619 (% style="color:#4f81bd" %)**Downlink Command:**
1620
1621 No downlink commands for feature
1622
1623
1624 == 4.13 Clear Flash Record ==
1625
1626
1627 Feature: Clear flash storage for data log feature.
1628
1629 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1630
1631 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:503px" %)
1632 |(% style="background-color:#4f81bd; color:white; width:157px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:137px" %)**Function**|(% style="background-color:#4f81bd; color:white; width:209px" %)**Response**
1633 |(% style="width:155px" %)AT+CLRDTA |(% style="width:134px" %)Clear date record|(% style="width:209px" %)(((
1634 Clear all stored sensor data…
1635
1636 OK
1637 )))
1638
1639 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1640
1641 * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1642
1643 == 4.14 Auto Send None-ACK messages ==
1644
1645
1646 Feature: LHT65N will wait for ACK for each uplink, If LHT65N doesn't get ACK from the IoT server, it will consider the message doesn't arrive server and store it. LHT65N keeps sending messages in normal periodically. Once LHT65N gets ACK from a server, it will consider the network is ok and start to send the not-arrive message.
1647
1648 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1649
1650 The default factory setting is 0
1651
1652 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:367px" %)
1653 |=(% style="width: 158px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 121px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width: 88px;background-color:#4F81BD;color:white" %)**Response**
1654 |(% style="width:158px" %)AT+PNACKMD=1|(% style="width:118px" %)Poll None-ACK message|(% style="width:87px" %)OK
1655
1656 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1657
1658 * Example: 0x3401  ~/~/  Same as AT+PNACKMD=1
1659
1660 == 4.15 Modified WMOD command for external sensor TMP117 or DS18B20 temperature alarm(Since firmware 1.3.0) ==
1661
1662
1663 Feature: Set internal and external temperature sensor alarms.
1664
1665 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
1666 |=(% style="width: 250px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 200px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width: 50px;background-color:#4F81BD;color:white" %)**Response**
1667 |(% style="width:268px" %)AT+WMOD=parameter1,parameter2,parameter3,parameter4|(% style="width:255px" %)Set internal and external temperature sensor alarms|(% style="width:181px" %)OK
1668
1669 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
1670
1671 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
1672
1673 0): Cancel
1674
1675 1): Threshold alarm
1676
1677 2): Fluctuation alarm
1678
1679 3): Sampling multiple times and uplink together
1680
1681
1682 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
1683
1684 (% style="color:red" %)**Note: When the collection time is less than 60 seconds and always exceeds the set alarm threshold, the sending interval will not be the collection time, but will be sent every 60 seconds.**
1685
1686
1687 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
1688
1689 **1):  If Alarm Mode is set to 1:** Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
1690
1691 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
1692
1693
1694 **2):  If Alarm Mode is set to 2:** Parameter 3 is valid, which represents the difference between the currently collected temperature and the last uploaded temperature.
1695
1696 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
1697
1698 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
1699
1700
1701 **3): If Alarm Mode is set to 3:**
1702
1703 * (% style="color:#037691" %)**parameter1: **(%%)Set Working Mode to **Mode 3**
1704 * (% style="color:#037691" %)**parameter2:**(%%) Set the temperature sampling mode to** 1**(1:DS18B20;2:TMP117;3:** **Internal GXHT30).
1705 * (% style="color:#037691" %)**parameter3: **(%%)Sampling Interval is **60**s.
1706 * (% style="color:#037691" %)**parameter4: **(%%)When there is **20** sampling dats, Device will send these data via one uplink. (max value is 60, means max 60 sampling in one uplink)
1707 * (% style="color:#037691" %)**parameter5 & parameter6: **(%%)Temperature alarm range is **-16** to **32**°C,
1708 * (% style="color:#037691" %)**parameter7:**(%%) 1 to enable temperature alarm, **0** to disable the temperature alarm. If alarm is enabled, a data will be sent immediately  if temperate exceeds the Alarm range.
1709
1710 (% style="color:#4f81bd" %)**Downlink Command: 0xA5**
1711
1712 0xA5 00 ~-~- AT+WMOD=0.
1713
1714 0xA5 01 0A 11 94 29 04 ~-~- AT+WMOD=1,10,45,105  (AT+WMOD = second byte, third byte, fourth and fifth bytes divided by 100, sixth and seventh bytes divided by 100 )
1715
1716 0XA5 01 0A F9 C0 29 04 ~-~-AT+WMOD=1,10,-16,105(Need to convert -16 to -1600 for calculation，-1600(DEC)=FFFFFFFFFFFFF9C0(HEX)  FFFFFFFFFFFFF9C0(HEX) +10000(HEX)=F9C0(HEX))
1717
1718 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
1719
1720 0xA5 03 01 00 3C 14 FF F0 00 20 01~-~-AT+WMOD=3,1,60,20,-16,32,1
1721
1722 0xA5 FF ~-~- After the device receives it, upload the current alarm configuration (FPORT=8). Such as 01 0A 11 94 29 04 or 02 0A 02.
1723
1724
1725 = 5. Battery & How to replace =
1726
1727 == 5.1 Battery Type ==
1728
1729
1730 (((
1731 LHT65N is equipped with a 2400mAH Li-MnO2 (CR17505) battery . The battery is an un-rechargeable battery with low discharge rate targeting for up to 8~~10 years use. This type of battery is commonly used in IoT devices for long-term running, such as water meters.
1732 )))
1733
1734 (((
1735 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1736
1737 [[image:image-20220515075034-1.png||_mstalt="428961" height="208" width="644"]]
1738 )))
1739
1740 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1741
1742
1743 == 5.2 Replace Battery ==
1744
1745
1746 LHT65N has two screws on the back, Unscrew them, and changing the battery inside is ok. The battery is a general CR17450 battery. Any brand should be ok.
1747
1748 [[image:image-20220515075440-2.png||_mstalt="429546" height="338" width="272"]][[image:image-20220515075625-3.png||_mstalt="431574" height="193" width="257"]]
1749
1750
1751 == 5.3 Battery Life Analyze ==
1752
1753
1754 (((
1755 Dragino battery-powered products are all run in Low Power mode. User can check the guideline from this link to calculate the estimated battery life:
1756 [[https:~~/~~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf>>https://www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf]]
1757 )))
1758
1759
1760 (((
1761 A full detail test report for LHT65N on different frequency can be found at : [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0>>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0]]
1762 )))
1763
1764
1765 = 6. FAQ =
1766
1767 == 6.1 How to use AT Command? ==
1768
1769
1770 LHT65N supports AT Command set.User can use a USB to TTL adapter plus the Program Cable to connect to LHT65 for using AT command, as below.
1771
1772 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1773
1774
1775 **Connection:**
1776
1777 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1778 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1779 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1780
1781 (((
1782 (% _mstmutation="1" style="color:red" %)**(Note: This pin only corresponds to the lead-out board sold by dragino company. For the lead-out board purchased by yourself, please refer to the pin description in Chapter 6.6)**
1783
1784 In PC, User needs to set serial tool(such as [[**putty**>>https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600**(%%) to access to access serial console for LHT65N. The AT commands are disable by default and need to enter password (default:(% style="color:green" %)**123456**) (%%)to active it. Timeout to input AT Command is 5 min, after 5-minute, user need to input password again. User can use AT+DISAT command to disable AT command before timeout.
1785 )))
1786
1787
1788 Input password and ATZ to activate LHT65N,As shown below:
1789
1790 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1791
1792
1793 AT Command List is as below:
1794
1795 AT+<CMD>? :  Help on <CMD>
1796
1797 AT+<CMD> :  Run <CMD>
1798
1799 AT+<CMD>=<value> :  Set the value
1800
1801 AT+<CMD>=? :  Get the value
1802
1803 AT+DEBUG:  Set more info output
1804
1805 ATZ:  Trig a reset of the MCU
1806
1807 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1808
1809 AT+DEUI:  Get or Set the Device EUI
1810
1811 AT+DADDR:  Get or Set the Device Address
1812
1813 AT+APPKEY:  Get or Set the Application Key
1814
1815 AT+NWKSKEY:  Get or Set the Network Session Key
1816
1817 AT+APPSKEY:  Get or Set the Application Session Key
1818
1819 AT+APPEUI:  Get or Set the Application EUI
1820
1821 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1822
1823 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1824
1825 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1826
1827 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1828
1829 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1830
1831 AT+RX2FQ:  Get or Set the Rx2 window frequency
1832
1833 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1834
1835 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1836
1837 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1838
1839 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1840
1841 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1842
1843 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1844
1845 AT+NWKID:  Get or Set the Network ID
1846
1847 AT+FCU:  Get or Set the Frame Counter Uplink
1848
1849 AT+FCD:  Get or Set the Frame Counter Downlink
1850
1851 AT+CLASS:  Get or Set the Device Class
1852
1853 AT+JOIN:  Join network
1854
1855 AT+NJS:  Get the join status
1856
1857 AT+SENDB:  Send hexadecimal data along with the application port
1858
1859 AT+SEND:  Send text data along with the application port
1860
1861 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1862
1863 AT+RECV:  Print last received data in raw format
1864
1865 AT+VER:  Get current image version and Frequency Band
1866
1867 AT+CFM:  Get or Set the confirmation mode (0-1)
1868
1869 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1870
1871 AT+SNR:  Get the SNR of the last received packet
1872
1873 AT+RSSI:  Get the RSSI of the last received packet
1874
1875 AT+TDC:  Get or set the application data transmission interval in ms
1876
1877 AT+PORT:  Get or set the application port
1878
1879 AT+DISAT:  Disable AT commands
1880
1881 AT+PWORD: Set password, max 9 digits
1882
1883 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1884
1885 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1886
1887 AT+PDTA:  Print the sector data from start page to stop page
1888
1889 AT+PLDTA:  Print the last few sets of data
1890
1891 AT+CLRDTA:  Clear the storage, record position back to 1st
1892
1893 AT+SLEEP:  Set sleep mode
1894
1895 AT+EXT:  Get or Set external sensor model
1896
1897 AT+BAT:  Get the current battery voltage in mV
1898
1899 AT+CFG:  Print all configurations
1900
1901 AT+WMOD:  Get or Set Work Mode
1902
1903 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1904
1905 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1906
1907 AT+SETCNT:  Set the count at present
1908
1909 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1910
1911 AT+RPL:  Get or set response level
1912
1913 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1914
1915 AT+LEAPSEC:  Get or Set Leap Second
1916
1917 AT+SYNCMOD:  Get or Set time synchronization method
1918
1919 AT+SYNCTDC:  Get or set time synchronization interval in day
1920
1921 AT+PID:  Get or set the PID
1922
1923
1924 == 6.2 Where to use AT commands and Downlink commands ==
1925
1926
1927 **AT commands: **
1928
1929 [[image:image-20220620153708-1.png||_mstalt="429806" height="603" width="723"]]
1930
1931
1932 **Downlink commands:**
1933
1934
1935 (% style="color:blue" %)**TTN:**
1936
1937 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1938
1939
1940
1941 (% style="color:blue" %)**Helium: **
1942
1943 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1944
1945
1946
1947 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1948
1949
1950 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1951
1952
1953 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1954
1955
1956
1957 (% style="color:blue" %)**Aws:**
1958
1959 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1960
1961
1962 == 6.3 How to change the uplink interval? ==
1963
1964
1965 Please see this link: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/||_mstmutation="1" style="background-color: rgb(255, 255, 255);"]]
1966
1967
1968 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1969
1970
1971 [[image:image-20220615153355-1.png||_mstalt="430222"]]
1972
1973 [[image:1655802313617-381.png||_mstalt="293917"]]
1974
1975
1976 (((
1977 In PC, User needs to set serial tool(such as [[**putty**>>https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600** (%%)to access to access serial console for LHT65N. The AT commands are disable by default and need to enter password (default:(% style="color:green" %)**123456**(% style="color:red" %))(%%) to active it. Timeout to input AT Command is 5 min, after 5-minute, user need to input password again. User can use AT+DISAT command to disable AT command before timeout.
1978 )))
1979
1980
1981 Input password and ATZ to activate LHT65N, As shown below:
1982
1983 [[image:image-20220615154519-3.png||_mstalt="431925" height="672" width="807"]]
1984
1985
1986 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1987
1988
1989 [[image:image-20220615153355-1.png||_mstalt="430222"]]
1990
1991
1992 (% style="color:blue" %)**Step1**(%%): Install [[TremoProgrammer>>https://www.dropbox.com/sh/g99v0fxcltn9r1y/AAAnJD_qGZ42bB52o4UmH9v9a/LHT65N%20Temperature%20%26%20Humidity%20Sensor/tool?dl=0&subfolder_nav_tracking=1]]  first.
1993
1994 [[image:image-20220615170542-5.png||_mstalt="430638"]]
1995
1996
1997
1998 (% _mstmutation="1" style="color:blue" %)**Step2**(%%): wiring method.(% style="display:none" %)
1999
2000 First connect the four lines;(% style="display:none" %)
2001
2002 [[image:image-20220621170938-1.png||_mstalt="431340" height="413" width="419"]],(% style="display:none" %)
2003
2004
2005 Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
2006
2007 [[image:image-20220621170938-2.png||_mstalt="431704"]]
2008
2009
2010
2011 (% style="color:blue" %)**Step3: **(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
2012
2013 [[image:image-20220615171334-6.png||_mstalt="431028"]]
2014
2015
2016 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
2017
2018
2019 When this interface appears, it indicates that the download has been completed.
2020
2021 [[image:image-20220620160723-8.png||_mstalt="430703"]]
2022
2023
2024 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
2025
2026
2027 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
2028
2029
2030 [[image:image-20220623110706-1.png||_mstalt="427869"]]
2031
2032
2033 **UART Port of LHT65N:**
2034
2035 * (% class="mark" %)**PB0: RXD**
2036 * (% class="mark" %)**PB1: TXD**
2037 * (% class="mark" %)**GND**
2038
2039 [[image:image-20220623112117-4.png||_mstalt="428350" height="459" width="343"]]
2040
2041
2042 (((
2043 In PC, User needs to set serial tool(such as [[**putty**>>https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600** (%%)to access to access serial console for LHT65N. The AT commands are disable by default and need to enter password (default:(% style="color:green" %)**123456**(% style="color:red" %))(%%) to active it. Timeout to input AT Command is 5 min, after 5-minute, user need to input password again. User can use AT+DISAT command to disable AT command before timeout.
2044 )))
2045
2046
2047 Input password and ATZ to activate LHT65N,As shown below:
2048
2049 [[image:image-20220615154519-3.png||_mstalt="431925" height="672" width="807"]]
2050
2051
2052 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
2053
2054
2055 [[image:image-20220623110706-1.png||_mstalt="427869"]]
2056
2057
2058 (% style="color:blue" %)**Step1**(%%): Install [[TremoProgrammer>>https://www.dropbox.com/sh/g99v0fxcltn9r1y/AAAnJD_qGZ42bB52o4UmH9v9a/LHT65N%20Temperature%20%26%20Humidity%20Sensor/tool?dl=0&subfolder_nav_tracking=1]]  first.
2059
2060 [[image:image-20220615170542-5.png||_mstalt="430638"]]
2061
2062
2063
2064 (% _mstmutation="1" style="color:blue" %)**Step2**(%%): wiring method.(% style="display:none" %)
2065
2066 First connect the four lines;
2067
2068 [[image:image-20220623113959-5.png||_mstalt="433485" height="528" width="397"]]
2069
2070 Connect A8 and GND with Dupont wire for a while and then separate, enter reset mode
2071
2072
2073
2074 (% style="color:blue" %)**Step3: **(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
2075
2076 [[image:image-20220615171334-6.png||_mstalt="431028"]]
2077
2078
2079 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
2080
2081
2082 When this interface appears, it indicates that the download has been completed.
2083
2084 [[image:image-20220620160723-8.png||_mstalt="430703"]]
2085
2086
2087 Finally,Disconnect 3.3v, Connect A8 and GND with Dupont wire for a while and then separate, exit reset mode
2088
2089
2090 == 6.8 Why can't I see the datalog information ==
2091
2092
2093 ~1. The time is not aligned, and the correct query command is not used.
2094
2095 2. Decoder error, did not parse the datalog data, the data was filtered.
2096
2097
2098 = 7. Order Info =
2099
2100
2101 Part Number: (% style="color:#4f81bd" %)** LHT65N-XX-YY**
2102
2103 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
2104
2105 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
2106 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
2107 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
2108 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
2109 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
2110 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**US915**(%%): LoRaWAN US915 band
2111 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
2112 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
2113
2114 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
2115
2116 * (% style="color:red" %)**E3**(%%): External Temperature Probe
2117
2118 = 8. Packing Info =
2119
2120
2121 **Package Includes**:
2122
2123 * LHT65N Temperature & Humidity Sensor x 1
2124 * Optional external sensor
2125
2126 = 9. Reference material =
2127
2128
2129 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0]]
2130
2131 = 10. FCC Warning =
2132
2133
2134 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
2135
2136 (1) This device may not cause harmful interference;
2137
2138 (2) this device must accept any interference received, including interference that may cause undesired operation.