Version 279.1 by Mengting Qiu on 2024/01/22 13:40
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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 If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705
985
986 Where : Start time: 60065F97 = time 21/1/19 04:27:03
987
988 Stop time: 60066DA7= time 21/1/19 05:27:03
989
990
991 **LHT65N will uplink this payload.**
992
993 [[image:image-20220523001219-13.png||_mstalt="451204" height="421" style="text-align:left" width="727"]]
994
995
996 __**7FFF089801464160065F97**__ **__7FFF__ __088E__ __014B__ __41__ __60066009__** 7FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
997
998 Where the first 11 bytes is for the first entry:
999
1000 7FFF089801464160065F97
1001
1002 Ext sensor data=0x7FFF/100=327.67
1003
1004 Temp=0x088E/100=22.00
1005
1006 Hum=0x014B/10=32.6
1007
1008 poll message flag & Ext=0x41,means reply data,Ext=1
1009
1010 Unix time is 0x60066009=1611030423s=21/1/19 04:27:03
1011
1012
1013 == 2.7 Alarm Mode & Feature "Multi sampling, one uplink" ==
1014
1015
1016 (((
1017 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.
1018 )))
1019
1020 (((
1021 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
1022
1023
1024 === 2.7.1 ALARM MODE ( Since v1.3.1 firmware) ===
1025
1026
1027 **Internal GXHT30 temperature alarm(Acquisition time: fixed at one minute)**
1028
1029 (((
1030 (% class="box infomessage" %)
1031 (((
1032 **AT+WMOD=3**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
1033
1034 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1035
1036 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1037
1038 (% _mstmutation="1" %)**AT+ARTEMP=? **(%%):  Gets the alarm range of the internal temperature sensor(% style="display:none" %)
1039
1040 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1041
1042 **AT+LEDALARM=1** :       Enable LED visual Alarm.
1043 )))
1044 )))
1045
1046 (% style="color:#4f81bd" %)**Downlink Command:**
1047
1048 AT+WMOD=1:  A501  , AT+WMOD=0 :  A600
1049
1050 AT+CITEMP=1 : A60001
1051
1052 AT+ARTEMP=1,60  :  A70001003C
1053
1054 AT+ARTEMP=-16,60 :  A7FFF0003C
1055
1056 AT+LEDALARM=1  :  3601
1057
1058
1059 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1060
1061 Total bytes: 8 bytes
1062
1063 **Example: **AA0100010001003C
1064
1065 WMOD=01
1066
1067 CITEMP=0001
1068
1069 TEMPlow=0001
1070
1071 TEMPhigh=003C
1072
1073
1074 **DS18B20 and TMP117 Threshold Alarm**
1075
1076 **~ AT+WMOD=1,60,-10,20**
1077
1078 (% style="color:#4f81bd" %)**Downlink Command:**
1079
1080 **Example: **A5013CFC180014
1081
1082 MOD=01
1083
1084 CITEMP=3C(S)
1085
1086 TEMPlow=FC18
1087
1088 TEMPhigh=0014
1089
1090
1091 **Fluctuation alarm for DS18B20 and TMP117(Acquisition time: minimum 1s)**
1092
1093 **AT+WMOD=2,60,5** 
1094
1095 (% style="color:#4f81bd" %)**Downlink Command:**
1096
1097 **Example: **A5023C05
1098
1099 MOD=02
1100
1101 CITEMP=3C(S)
1102
1103 temperature fluctuation=05
1104
1105
1106 **Sampling multiple times and uplink together**
1107
1108 **AT+WMOD=3,1,60,20,-16,32,1**   
1109
1110 Explain:
1111
1112 * (% style="color:#037691" %)**parameter1: **(%%)Set Working Mode to **Mode 3**
1113 * (% style="color:#037691" %)**parameter2:**(%%) Set the temperature sampling mode to** 1**(1:DS18B20;2:TMP117;3:** **Internal GXHT30).
1114 * (% style="color:#037691" %)**parameter3: **(%%)Sampling Interval is **60**s.
1115 * (% 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)
1116 * (% style="color:#037691" %)**parameter5 & parameter6: **(%%)Temperature alarm range is **-16** to **32**°C,
1117 * (% 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.
1118
1119 (% style="color:#4f81bd" %)**Downlink Command:**
1120
1121 **Example: **A50301003C14FFF0002001
1122
1123 MOD=03
1124
1125 TEMP=DS18B20
1126
1127 CITEMP=003C(S)
1128
1129 Total number of acquisitions=14
1130
1131 TEMPlow=FFF0
1132
1133 TEMPhigh=0020
1134
1135 ARTEMP=01
1136
1137
1138 **Uplink payload( Fport=3)**
1139
1140 **Example: CBEA**01**0992**//0A41//**09C4**
1141
1142 BatV=CBEA
1143
1144 TEMP=DS18B20
1145
1146 Temp1=0992  ~/~/ 24.50℃
1147
1148 Temp2=0A41  ~/~/ 26.25℃
1149
1150 Temp3=09C4  ~/~/ 25.00℃
1151
1152 (% style="color:red" %)**Note: This uplink will automatically select the appropriate DR according to the data length**
1153
1154 (% style="color:red" %)** In this mode, the temperature resolution of ds18b20 is 0.25℃ to save power consumption**
1155 )))
1156
1157
1158 === 2.7.2 ALARM MODE ( Before v1.3.1 firmware) ===
1159
1160
1161 (% class="box infomessage" %)
1162 (((
1163 (((
1164 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
1165 )))
1166
1167 (((
1168 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1169 )))
1170
1171 (((
1172 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1173 )))
1174
1175 (((
1176 (% _mstmutation="1" %)**AT+ARTEMP=? **(%%):  Gets the alarm range of the internal temperature sensor(% style="display:none" %)
1177 )))
1178
1179 (((
1180 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1181 )))
1182 )))
1183
1184 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1185
1186 Total bytes: 8 bytes
1187
1188 **Example:**AA0100010001003C
1189
1190 WMOD=01
1191
1192 CITEMP=0001
1193
1194 TEMPlow=0001
1195
1196 TEMPhigh=003C
1197
1198
1199 == 2.8 LED Indicator ==
1200
1201
1202 The LHT65 has a triple color LED which for easy showing different stage .
1203
1204 While user press ACT button, the LED will work as per LED status with ACT button.
1205
1206 In a normal working state:
1207
1208 * For each uplink, the BLUE LED or RED LED will blink once.
1209 BLUE LED when external sensor is connected.
1210 * RED LED when external sensor is not connected
1211 * For each success downlink, the PURPLE LED will blink once
1212
1213 == 2.9 installation ==
1214
1215
1216 [[image:image-20220516231650-1.png||_mstalt="428597" height="436" width="428"]]
1217
1218
1219 = 3. Sensors and Accessories =
1220
1221 == 3.1 E2 Extension Cable ==
1222
1223
1224 [[image:image-20220619092222-1.png||_mstalt="429533" height="182" width="188"]][[image:image-20220619092313-2.png||_mstalt="430222" height="182" width="173"]]
1225
1226
1227 **1m long breakout cable for LHT65N. Features:**
1228
1229 * (((
1230 Use for AT Command, works for both LHT52/LHT65N
1231 )))
1232 * (((
1233 Update firmware for LHT65N, works for both LHT52/LHT65N
1234 )))
1235 * (((
1236 Supports ADC mode to monitor external ADC
1237 )))
1238 * (((
1239 Supports Interrupt mode
1240 )))
1241 * (((
1242 Exposed All pins from the LHT65N Type-C connector.
1243
1244
1245
1246 )))
1247
1248 [[image:image-20220619092421-3.png||_mstalt="430547" height="371" width="529"]]
1249
1250
1251 == 3.2 E3 Temperature Probe ==
1252
1253
1254 [[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"]]
1255
1256
1257 Temperature sensor with 2 meters cable long
1258
1259 * Resolution: 0.0625 °C
1260 * ±0.5°C accuracy from -10°C to +85°C
1261 * ±2°C accuracy from -55°C to +125°C
1262 * Operating Range: -40 ~~ 125 °C
1263 * Working voltage 2.35v ~~ 5v
1264
1265 == 3.3 E31F Temperature Probe ==
1266
1267
1268 [[image:65N-E31F-1.jpg||height="169" width="170"]] [[image:image-20230717151424-9.png||height="221" width="204"]](% style="display:none" %)
1269
1270
1271 Temperature sensor with 1 meters cable long
1272
1273
1274 **Built-in Temperature Sensor:**
1275
1276 * Resolution: 0.01 °C
1277 * Accuracy Tolerance : Typ ±0.3 °C
1278 * Long Term Drift: < 0.02 °C/yr
1279 * Operating Range: -40 ~~ 80 °C
1280
1281 **Built-in Humidity Sensor:**
1282
1283 * Resolution: 0.04 % RH
1284 * Accuracy Tolerance : Typ ±3 % RH
1285 * Long Term Drift: < 0.02 °C/yr
1286 * Operating Range: 0 ~~ 96 % RH
1287
1288 **External Temperature Sensor :**
1289
1290 * Resolution: 0.01 °C
1291 * Accuracy Tolerance : Typical ±0.3 °C
1292 * Long Term Drift: < 0.02 °C/yr
1293 * Operating Range: -40 ~~ 125 °C
1294
1295 **External Humidity Sensor :**
1296
1297 * Resolution: 0.04 % RH
1298 * Accuracy Tolerance : Typ ±3 % RH
1299 * Long Term Drift: < 0.02 °C/yr
1300 * Operating Range: 0 ~~ 96 % RH
1301
1302 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1303
1304
1305 (((
1306 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1307 )))
1308
1309 * (((
1310 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1311 )))
1312
1313 * (((
1314 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1315 )))
1316
1317 (((
1318 There are two kinds of commands to configure LHT65N, they are:
1319 )))
1320
1321 * (((
1322 (% style="color:#4f81bd" %)**General Commands**.
1323 )))
1324
1325 (((
1326 These commands are to configure:
1327 )))
1328
1329 1. (((
1330 General system settings like: uplink interval.
1331 )))
1332 1. (((
1333 LoRaWAN protocol & radio-related commands.
1334 )))
1335
1336 (((
1337 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]]
1338 )))
1339
1340 * (((
1341 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1342 )))
1343
1344 (((
1345 These commands are only valid for LHT65N, as below:
1346 )))
1347
1348
1349 == 4.1 Set Transmit Interval Time ==
1350
1351
1352 Feature: Change LoRaWAN End Node Transmit Interval.
1353
1354
1355 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1356
1357 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:501px" %)
1358 |(% 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**
1359 |(% style="width:155px" %)AT+TDC=?|(% style="width:162px" %)Show current transmit Interval|(% style="width:177px" %)30000 OK the interval is 30000ms = 30s
1360 |(% style="width:155px" %)AT+TDC=60000|(% style="width:162px" %)Set Transmit Interval|(% style="width:177px" %)OK Set transmit interval to 60000ms = 60 seconds
1361
1362 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1363
1364 Format: Command Code (0x01) followed by 3 bytes time value.
1365
1366 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
1367
1368 * **Example 1**: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
1369
1370 * **Example 2**: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
1371
1372 == 4.2 Set External Sensor Mode ==
1373
1374
1375 Feature: Change External Sensor Mode.
1376
1377 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1378
1379 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:468px" %)
1380 |(% 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**
1381 |(% style="width:155px" %)AT+EXT=?|(% style="width:151px" %)Get current external sensor mode|(% style="width:158px" %)1 OK External Sensor mode =1
1382 |(% style="width:155px" %)AT+EXT=1|(% colspan="2" rowspan="1" style="width:309px" %)Set external sensor mode to 1
1383 |(% style="width:155px" %)AT+EXT=9|(% colspan="2" rowspan="1" style="width:309px" %)Set to external DS18B20 with timestamp
1384
1385 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1386
1387 Total bytes: 2 ~~ 5 bytes
1388
1389 **Example:**
1390
1391 * 0xA201: Set external sensor type to E1
1392
1393 * 0xA209: Same as AT+EXT=9
1394
1395 * 0xA20702003c: Same as AT+SETCNT=60
1396
1397 == 4.3 Enable/Disable uplink Temperature probe ID ==
1398
1399
1400 (((
1401 Feature: If PID is enabled, device will send the temperature probe ID on:
1402 )))
1403
1404 * (((
1405 First Packet after OTAA Join
1406 )))
1407 * (((
1408 Every 24 hours since the first packet.
1409 )))
1410
1411 (((
1412 PID is default set to disable (0)
1413
1414
1415 )))
1416
1417 (% style="color:#4f81bd" %)**AT Command:**
1418
1419 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:381px" %)
1420 |(% 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**
1421 |(% style="width:155px" %)AT+PID=1|(% style="width:136px" %)Enable PID uplink|(% style="width:86px" %)OK
1422
1423 (% style="color:#4f81bd" %)**Downlink Command:**
1424
1425 * **0xA800**  **~-~->** AT+PID=0
1426 * **0xA801**     **~-~->** AT+PID=1
1427
1428 == 4.4 Set Password ==
1429
1430
1431 Feature: Set device password, max 9 digits
1432
1433 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1434
1435 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:372px" %)
1436 |(% 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**
1437 |(% style="width:155px" %)AT+PWORD=?|(% style="width:124px" %)Show password|(% style="width:86px" %)(((
1438 123456
1439
1440 OK
1441 )))
1442 |(% style="width:155px" %)AT+PWORD=999999|(% style="width:124px" %)Set password|(% style="width:86px" %)OK
1443
1444 (% style="color:#4f81bd" %)**Downlink Command:**
1445
1446 No downlink command for this feature.
1447
1448
1449 == 4.5 Quit AT Command ==
1450
1451
1452 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1453
1454 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1455
1456 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:433px" %)
1457 |(% 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**
1458 |(% style="width:155px" %)AT+DISAT|(% style="width:191px" %)Quit AT Commands mode|(% style="width:86px" %)OK
1459
1460 (% style="color:#4f81bd" %)**Downlink Command:**
1461
1462 No downlink command for this feature.
1463
1464
1465 == 4.6 Set to sleep mode ==
1466
1467
1468 Feature: Set device to sleep mode
1469
1470 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1471 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1472
1473 (% style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1474
1475 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:513px" %)
1476 |(% 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**
1477 |(% style="width:155px" %)AT+SLEEP|(% style="width:139px" %)Set to sleep mode|(% style="width:213px" %)(((
1478 Clear all stored sensor data…
1479
1480 OK
1481 )))
1482
1483 (% style="color:#4f81bd" %)**Downlink Command:**
1484
1485 * There is no downlink command to set to Sleep mode.
1486
1487 == 4.7 Set system time ==
1488
1489
1490 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1491
1492 (% style="color:#4f81bd" %)**AT Command:**
1493
1494 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:506px" %)
1495 |(% style="background-color:#4f81bd; color:white; width:188px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:318px" %)**Function**
1496 |(% style="width:154px" %)AT+TIMESTAMP=1611104352|(% style="width:285px" %)(((
1497 OK
1498
1499 Set System time to 2021-01-20 00:59:12
1500 )))
1501
1502 (% style="color:#4f81bd" %)**Downlink Command:**
1503
1504 0x306007806000  ~/~/  Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1505
1506
1507 == 4.8 Set Time Sync Mode ==
1508
1509
1510 (((
1511 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1512 )))
1513
1514 (((
1515 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.
1516 )))
1517
1518 (% style="color:#4f81bd" %)**AT Command:**
1519
1520 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:475px" %)
1521 |(% style="background-color:#4f81bd; color:white; width:158px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:317px" %)**Function**
1522 |(% style="width:156px" %)AT+SYNCMOD=1|(% style="width:315px" %)Enable Sync system time via LoRaWAN MAC Command (DeviceTimeReq)
1523
1524 (% style="color:#4f81bd" %)**Downlink Command:**
1525
1526 0x28 01  ~/~/  Same As AT+SYNCMOD=1
1527 0x28 00  ~/~/  Same As AT+SYNCMOD=0
1528
1529
1530 == 4.9 Set Time Sync Interval ==
1531
1532
1533 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1534
1535 (% style="color:#4f81bd" %)**AT Command:**
1536
1537 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:472px" %)
1538 |(% style="background-color:#4f81bd; color:white; width:158px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:314px" %)**Function**
1539 |(% style="width:156px" %)AT+SYNCTDC=0x0A |(% style="width:311px" %)Set SYNCTDC to 10 (0x0A), so the sync time is 10 days.
1540
1541 (% style="color:#4f81bd" %)**Downlink Command:**
1542
1543 **0x29 0A**  ~/~/ Same as AT+SYNCTDC=0x0A
1544
1545
1546 == 4.10 Get data ==
1547
1548
1549 Feature: Get the current sensor data.
1550
1551 (% style="color:#4f81bd" %)**AT Command:**
1552
1553 * **AT+GETSENSORVALUE=0**      ~/~/ The serial port gets the reading of the current sensor
1554 * **AT+GETSENSORVALUE=1**      ~/~/ The serial port gets the current sensor reading and uploads it.
1555
1556 == 4.11 Print data entries base on page ==
1557
1558
1559 Feature: Print the sector data from start page to stop page (max is 416 pages).
1560
1561 (% style="color:#4f81bd" %)**AT Command: AT+PDTA**
1562
1563 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
1564 |(% style="background-color:#4f81bd; color:white; width:158px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:352px" %)**Function**
1565 |(% style="width:156px" %)(((
1566 AT+PDTA=13
1567 Print page 1 to 3
1568 )))|(% style="width:311px" %)(((
1569 8019500 19/6/26 16:48 1 2992 sht temp=28.21 sht hum=71.5 ds temp=27.31
1570 8019510 19/6/26 16:53 1 2994 sht temp=27.64 sht hum=69.3 ds temp=26.93
1571 8019520 19/6/26 16:58 1 2996 sht temp=28.39 sht hum=72.0 ds temp=27.06
1572 8019530 19/6/26 17:03 1 2996 sht temp=27.97 sht hum=70.4 ds temp=27.12
1573 8019540 19/6/26 17:08 1 2996 sht temp=27.80 sht hum=72.9 ds temp=27.06
1574 8019550 19/6/26 17:13 1 2998 sht temp=27.30 sht hum=72.4 ds temp=26.68
1575 8019560 19/6/26 17:22 1 2992 sht temp=26.27 sht hum=62.3 ds temp=26.56
1576 8019570
1577 8019580
1578 8019590
1579 80195A0
1580 80195B0
1581 80195C0
1582 80195D0
1583 80195E0
1584 80195F0
1585
1586 OK
1587 )))
1588
1589 (% style="color:#4f81bd" %)**Downlink Command:**
1590
1591 No downlink commands for feature
1592
1593
1594 == 4.12 Print last few data entries ==
1595
1596
1597 Feature: Print the last few data entries
1598
1599 (% style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1600
1601 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
1602 |(% style="background-color:#4f81bd; color:white; width:158px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:352px" %)**Function**
1603 |(% style="width:156px" %)(((
1604 AT+PLDTA=5
1605 Print last 5 entries
1606 )))|(% style="width:311px" %)(((
1607 Stop Tx and RTP events when read sensor data
1608 1 19/6/26 13:59 1 3005 sht temp=27.09 sht hum=79.5 ds temp=26.75
1609 2 19/6/26 14:04 1 3007 sht temp=26.65 sht hum=74.8 ds temp=26.43
1610 3 19/6/26 14:09 1 3007 sht temp=26.91 sht hum=77.9 ds temp=26.56
1611 4 19/6/26 14:15 1 3007 sht temp=26.93 sht hum=76.7 ds temp=26.75
1612 5 19/6/26 14:20 1 3007 sht temp=26.78 sht hum=76.6 ds temp=26.43
1613 Start Tx and RTP events
1614 OK
1615 )))
1616
1617 (% style="color:#4f81bd" %)**Downlink Command:**
1618
1619 No downlink commands for feature
1620
1621
1622 == 4.13 Clear Flash Record ==
1623
1624
1625 Feature: Clear flash storage for data log feature.
1626
1627 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1628
1629 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:503px" %)
1630 |(% 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**
1631 |(% style="width:155px" %)AT+CLRDTA |(% style="width:134px" %)Clear date record|(% style="width:209px" %)(((
1632 Clear all stored sensor data…
1633
1634 OK
1635 )))
1636
1637 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1638
1639 * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1640
1641 == 4.14 Auto Send None-ACK messages ==
1642
1643
1644 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.
1645
1646 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1647
1648 The default factory setting is 0
1649
1650 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:367px" %)
1651 |=(% 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**
1652 |(% style="width:158px" %)AT+PNACKMD=1|(% style="width:118px" %)Poll None-ACK message|(% style="width:87px" %)OK
1653
1654 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1655
1656 * Example: 0x3401  ~/~/  Same as AT+PNACKMD=1
1657
1658 == 4.15 Modified WMOD command for external sensor TMP117 or DS18B20 temperature alarm(Since firmware 1.3.0) ==
1659
1660
1661 Feature: Set internal and external temperature sensor alarms.
1662
1663 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
1664 |=(% 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**
1665 |(% style="width:268px" %)AT+WMOD=parameter1,parameter2,parameter3,parameter4|(% style="width:255px" %)Set internal and external temperature sensor alarms|(% style="width:181px" %)OK
1666
1667 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
1668
1669 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
1670
1671 0): Cancel
1672
1673 1): Threshold alarm
1674
1675 2): Fluctuation alarm
1676
1677 3): Sampling multiple times and uplink together
1678
1679
1680 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
1681
1682 (% 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.**
1683
1684
1685 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
1686
1687 **1):  If Alarm Mode is set to 1:** Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
1688
1689 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
1690
1691
1692 **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.
1693
1694 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
1695
1696 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
1697
1698
1699 **3): If Alarm Mode is set to 3:**
1700
1701 * (% style="color:#037691" %)**parameter1: **(%%)Set Working Mode to **Mode 3**
1702 * (% style="color:#037691" %)**parameter2:**(%%) Set the temperature sampling mode to** 1**(1:DS18B20;2:TMP117;3:** **Internal GXHT30).
1703 * (% style="color:#037691" %)**parameter3: **(%%)Sampling Interval is **60**s.
1704 * (% 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)
1705 * (% style="color:#037691" %)**parameter5 & parameter6: **(%%)Temperature alarm range is **-16** to **32**°C,
1706 * (% 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.
1707
1708 (% style="color:#4f81bd" %)**Downlink Command: 0xA5**
1709
1710 0xA5 00 ~-~- AT+WMOD=0.
1711
1712 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 )
1713
1714 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))
1715
1716 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
1717
1718 0xA5 03 01 00 3C 14 FF F0 00 20 01~-~-AT+WMOD=3,1,60,20,-16,32,1
1719
1720 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.
1721
1722
1723 = 5. Battery & How to replace =
1724
1725 == 5.1 Battery Type ==
1726
1727
1728 (((
1729 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.
1730 )))
1731
1732 (((
1733 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1734
1735 [[image:image-20220515075034-1.png||_mstalt="428961" height="208" width="644"]]
1736 )))
1737
1738 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1739
1740
1741 == 5.2 Replace Battery ==
1742
1743
1744 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.
1745
1746 [[image:image-20220515075440-2.png||_mstalt="429546" height="338" width="272"]][[image:image-20220515075625-3.png||_mstalt="431574" height="193" width="257"]]
1747
1748
1749 == 5.3 Battery Life Analyze ==
1750
1751
1752 (((
1753 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:
1754 [[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]]
1755 )))
1756
1757
1758 (((
1759 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]]
1760 )))
1761
1762
1763 = 6. FAQ =
1764
1765 == 6.1 How to connect to LHT65N UART interface? ==
1766
1767 The LHT65N has the UART interface in its Type-C. The UART Interface can be used for
1768
1769 * Send AT Commands, and get output from LHT65N
1770 * Upgrade firmwre of LHT65N.
1771
1772 The hardware connection is: **PC <~-~-> USB to TTL Adapter <~-~-> Jump wires <~-~-> Type-C Adapter <~-~-> LHT65N**
1773
1774
1775 **Option of USB TTL adapter:**
1776
1777 * CP2101 USB TTL Adapter
1778 * CH340 USB TTL Adapter
1779 * FT232 USB TTL Adapter
1780
1781 **Option of Type-C Adapter:**
1782
1783 [[image:image-20240122103221-3.png||height="694" width="1039"]]
1784
1785
1786 **Connection:**
1787
1788 * (% style="background-color:yellow" %)**USB to TTL GND <~-~-> LHT65N GND**
1789 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> LHT65N TXD**
1790 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> LHT65N RXD**
1791
1792 (((
1793
1794
1795 Connection Example:
1796
1797 [[image:1655802313617-381.png||_mstalt="293917"]]
1798
1799
1800 [[image:image-20240122092100-1.jpeg||height="466" width="643"]]
1801
1802
1803 == 6.2 How to use AT Commands? ==
1804
1805 First, Connect PC and LHT65N via USB TTL adapter as FAQ 6.1
1806
1807 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.
1808 )))
1809
1810
1811 Input password and ATZ to activate LHT65N,As shown below:
1812
1813 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1814
1815
1816 AT Command List is as below:
1817
1818 AT+<CMD>? :  Help on <CMD>
1819
1820 AT+<CMD> :  Run <CMD>
1821
1822 AT+<CMD>=<value> :  Set the value
1823
1824 AT+<CMD>=? :  Get the value
1825
1826 AT+DEBUG:  Set more info output
1827
1828 ATZ:  Trig a reset of the MCU
1829
1830 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1831
1832 AT+DEUI:  Get or Set the Device EUI
1833
1834 AT+DADDR:  Get or Set the Device Address
1835
1836 AT+APPKEY:  Get or Set the Application Key
1837
1838 AT+NWKSKEY:  Get or Set the Network Session Key
1839
1840 AT+APPSKEY:  Get or Set the Application Session Key
1841
1842 AT+APPEUI:  Get or Set the Application EUI
1843
1844 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1845
1846 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1847
1848 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1849
1850 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1851
1852 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1853
1854 AT+RX2FQ:  Get or Set the Rx2 window frequency
1855
1856 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1857
1858 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1859
1860 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1861
1862 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1863
1864 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1865
1866 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1867
1868 AT+NWKID:  Get or Set the Network ID
1869
1870 AT+FCU:  Get or Set the Frame Counter Uplink
1871
1872 AT+FCD:  Get or Set the Frame Counter Downlink
1873
1874 AT+CLASS:  Get or Set the Device Class
1875
1876 AT+JOIN:  Join network
1877
1878 AT+NJS:  Get the join status
1879
1880 AT+SENDB:  Send hexadecimal data along with the application port
1881
1882 AT+SEND:  Send text data along with the application port
1883
1884 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1885
1886 AT+RECV:  Print last received data in raw format
1887
1888 AT+VER:  Get current image version and Frequency Band
1889
1890 AT+CFM:  Get or Set the confirmation mode (0-1)
1891
1892 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1893
1894 AT+SNR:  Get the SNR of the last received packet
1895
1896 AT+RSSI:  Get the RSSI of the last received packet
1897
1898 AT+TDC:  Get or set the application data transmission interval in ms
1899
1900 AT+PORT:  Get or set the application port
1901
1902 AT+DISAT:  Disable AT commands
1903
1904 AT+PWORD: Set password, max 9 digits
1905
1906 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1907
1908 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1909
1910 AT+PDTA:  Print the sector data from start page to stop page
1911
1912 AT+PLDTA:  Print the last few sets of data
1913
1914 AT+CLRDTA:  Clear the storage, record position back to 1st
1915
1916 AT+SLEEP:  Set sleep mode
1917
1918 AT+EXT:  Get or Set external sensor model
1919
1920 AT+BAT:  Get the current battery voltage in mV
1921
1922 AT+CFG:  Print all configurations
1923
1924 AT+WMOD:  Get or Set Work Mode
1925
1926 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1927
1928 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1929
1930 AT+SETCNT:  Set the count at present
1931
1932 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1933
1934 AT+RPL:  Get or set response level
1935
1936 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1937
1938 AT+LEAPSEC:  Get or Set Leap Second
1939
1940 AT+SYNCMOD:  Get or Set time synchronization method
1941
1942 AT+SYNCTDC:  Get or set time synchronization interval in day
1943
1944 AT+PID:  Get or set the PID
1945
1946
1947 == 6.3 How to use Downlink commands? ==
1948
1949
1950 **Downlink commands:**
1951
1952
1953 (% style="color:blue" %)**TTN:**
1954
1955 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1956
1957
1958
1959 (% style="color:blue" %)**Helium: **
1960
1961 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1962
1963
1964
1965 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1966
1967
1968 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1969
1970
1971 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1972
1973
1974
1975 (% style="color:blue" %)**AWS-IOT :**
1976
1977 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1978
1979
1980 == 6.4 How to change the uplink interval? ==
1981
1982
1983 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);"]]
1984
1985
1986 == 6.5 How to upgrade firmware? ==
1987
1988
1989 (% 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.
1990
1991 [[image:image-20220615170542-5.png||_mstalt="430638"]]
1992
1993
1994
1995 (% _mstmutation="1" style="color:blue" %)**Step2**(%%): Hardware Connection
1996
1997 Connect PC and LHT65N via USB TTL adapter .
1998
1999 (% style="color:red" %)**Note: Port4 (BOOT_CTL) of E2 cable connects 3V3 of USB-TTL, and the node enters burn mode.**
2000
2001 (% style="color:red" %)** Port3(RST)**
2002
2003
2004 [[image:image-20240122105429-4.png||height="326" width="452"]](% style="display:none" %) [[image:image-20240122115332-5.jpeg||height="324" width="401"]]
2005
2006
2007 (% style="color:blue" %)**Step3: **(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
2008
2009 [[image:image-20220615171334-6.png||_mstalt="431028"]]
2010
2011
2012 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
2013
2014
2015 When this interface appears, it indicates that the download has been completed.
2016
2017 [[image:image-20220620160723-8.png||_mstalt="430703"]]
2018
2019
2020 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
2021
2022
2023 == 6.6 Why can't I see the datalog information ==
2024
2025
2026 ~1. The time is not aligned, and the correct query command is not used.
2027
2028 2. Decoder error, did not parse the datalog data, the data was filtered.
2029
2030
2031 = 7. Order Info =
2032
2033
2034 Part Number: (% style="color:#4f81bd" %)** LHT65N-XX-YY**
2035
2036 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
2037
2038 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
2039 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
2040 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
2041 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
2042 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
2043 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**US915**(%%): LoRaWAN US915 band
2044 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
2045 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
2046
2047 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
2048
2049 * (% style="color:red" %)**E3**(%%): External Temperature Probe
2050
2051 = 8. Packing Info =
2052
2053
2054 **Package Includes**:
2055
2056 * LHT65N Temperature & Humidity Sensor x 1
2057 * Optional external sensor
2058
2059 = 9. Reference material =
2060
2061
2062 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0]]
2063
2064 = 10. FCC Warning =
2065
2066
2067 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
2068
2069 (1) This device may not cause harmful interference;
2070
2071 (2) this device must accept any interference received, including interference that may cause undesired operation.

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