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Version 263.2 by Xiaoling on 2023/08/08 11:00
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1 (% style="text-align:center" %)
2 [[image:image-20230808104154-2.png||height="752" width="501"]]
3
4
5 **Table of Contents:**
6
7 {{toc/}}
8
9
10
11
12
13 = 1. Introduction =
14
15 == 1.1 What is LHT65S LoRaWAN (% style="display:none" %) (%%)Temperature & Humidity Sensor ==
16
17
18 (((
19 The Dragino LHT65S (% 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.**
20 )))
21
22 (((
23 The LHT65S 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.
24 )))
25
26 (((
27 LHT65S has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
28 )))
29
30 (((
31 LHT65S is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
32 )))
33
34 (((
35 LHT65S 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.
36 )))
37
38 (((
39 *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
40 )))
41
42
43 == 1.2 Features ==
44
45
46 * LoRaWAN v1.0.3 Class A protocol
47 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
48 * AT Commands to change parameters
49 * Remote configure parameters via LoRaWAN Downlink
50 * Firmware upgradeable via program port
51 * Built-in 2400mAh battery for up to 10 years of use.
52 * Built-in Temperature & Humidity sensor
53 * Optional External Sensors
54 * Tri-color LED to indicate working status
55 * Datalog feature (Max 3328 records)
56
57 == 1.3 Specification ==
58
59
60 (% style="color:#037691" %)**Built-in Temperature Sensor:**
61
62 * Resolution: 0.01 °C
63 * Accuracy Tolerance : Typ ±0.3 °C
64 * Long Term Drift: < 0.02 °C/yr
65 * Operating Range: -40 ~~ 85 °C
66
67 (% style="color:#037691" %)**Built-in Humidity Sensor:**
68
69 * Resolution: 0.04 %RH
70 * Accuracy Tolerance : Typ ±3 %RH
71 * Long Term Drift: < 0.02 °C/yr
72 * Operating Range: 0 ~~ 96 %RH
73
74 (% style="color:#037691" %)**External Temperature Sensor:**
75
76 * Resolution: 0.0625 °C
77 * ±0.5°C accuracy from -10°C to +85°C
78 * ±2°C accuracy from -55°C to +125°C
79 * Operating Range: -55 °C ~~ 125 °C
80
81 = 2. Connect LHT65S to IoT Server =
82
83 == 2.1 How does LHT65S work? ==
84
85
86 (((
87 LHT65S is configured as LoRaWAN OTAA Class A mode by default. Each LHT65S is shipped with a worldwide unique set of OTAA keys. To use LHT65S in a LoRaWAN network, first, we need to put the OTAA keys in LoRaWAN Network Server and then activate LHT65S.
88 )))
89
90 (((
91 If LHT65S is under the coverage of this LoRaWAN network. LHT65S can join the LoRaWAN network automatically. After successfully joining, LHT65S 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.
92 )))
93
94
95 == 2.2 How to Activate LHT65S? ==
96
97
98 (((
99 The LHT65S has two working modes:
100 )))
101
102 * (((
103 (% style="color:blue" %)**Deep Sleep Mode**(%%): LHT65S doesn't have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.
104 )))
105 * (((
106 (% style="color:blue" %)**Working Mode**(%%):  In this mode, LHT65S works as LoRaWAN Sensor mode to Join LoRaWAN network and send out the sensor data to the server. Between each sampling/tx/rx periodically, LHT65S will be in STOP mode (IDLE mode), in STOP mode, LHT65S has the same power consumption as Deep Sleep mode. 
107 )))
108
109 (((
110 The LHT65S is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
111 )))
112
113
114 [[image:image-20230717144740-2.png||height="391" width="267"]]
115
116 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
117 |=(% style="width: 167px;background-color:#D9E2F3;color:#0070C0" %)**Behavior on ACT**|=(% style="width: 117px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 225px;background-color:#D9E2F3;color:#0070C0" %)**Action**
118 |(% 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" %)(((
119 If LHT65S is already Joined to rhe LoRaWAN network, LHT65S will send an uplink packet, if LHT65S has external sensor connected,(% style="color:blue" %)**Blue led** (%%)will blink once. If LHT65S has not external sensor, (% style="color:red" %)**Red led**(%%) will blink once.
120 )))
121 |(% 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" %)(((
122 (% style="background-color:#f2f2f2; color:green" %)**Green led**(%%) will fast blink 5 times, LHT65S will enter working mode and start to JOIN LoRaWAN network.
123 (% style="background-color:#f2f2f2; color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after join in network.
124 )))
125 |(% 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 LHT65S is in Deep Sleep Mode.
126
127 == 2.3 Example to join LoRaWAN network ==
128
129
130 (% class="wikigeneratedid" %)
131 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.
132
133
134 (% class="wikigeneratedid" %)
135 [[image:image-20220522232442-1.png||_mstalt="427830" height="387" width="648"]]
136
137
138 (((
139 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 LHT65S. Next we need to add the LHT65S device in TTN V3:
140 )))
141
142
143 === 2.3.1 Step 1: Create Device n TTN ===
144
145
146 (((
147 Create a device in TTN V3 with the OTAA keys from LHT65S.
148 )))
149
150 (((
151 Each LHT65S is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
152 )))
153
154 [[image:image-20230426083319-1.png||height="258" width="556"]]
155
156 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
157
158 Add APP EUI in the application.
159
160
161 [[image:image-20220522232916-3.png||_mstalt="430495"]]
162
163
164 [[image:image-20220522232932-4.png||_mstalt="430157"]]
165
166
167 [[image:image-20220522232954-5.png||_mstalt="431847"]]
168
169
170
171 (% style="color:red" %)**Note: LHT65S use same payload as LHT65.**
172
173
174 [[image:image-20220522233026-6.png||_mstalt="429403"]]
175
176
177 Input APP EUI,  APP KEY and DEV EUI:
178
179
180 [[image:image-20220522233118-7.png||_mstalt="430430"]]
181
182
183 === 2.3.2 Step 2: Activate LHT65S by pressing the ACT button for more than 5 seconds. ===
184
185
186 (((
187 Use ACT button to activate LHT65S 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.
188 )))
189
190 [[image:image-20220522233300-8.png||_mstalt="428389" height="219" width="722"]]
191
192
193 == 2.4 Uplink Payload (Fport~=2) ==
194
195
196 (((
197 The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and (% style="color:#4f81bd" %)**every 20 minutes**(%%) send one uplink by default.
198 )))
199
200 (((
201 After each uplink, the (% style="color:blue" %)**BLUE LED**(%%) will blink once.
202 )))
203
204 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:390px" %)
205 |=(% style="width: 60px;background-color:#D9E2F3;color:#0070C0" %)(((
206 **Size(bytes)**
207 )))|=(% style="width: 30px;background-color:#D9E2F3;color:#0070C0" %)(((
208 **2**
209 )))|=(% style="width: 100px;background-color:#D9E2F3;color:#0070C0" %)(((
210 **2**
211 )))|=(% style="width: 100px;background-color:#D9E2F3;color:#0070C0" %)(((
212 **2**
213 )))|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
214 **1**
215 )))|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
216 **4**
217 )))
218 |(% style="width:97px" %)(((
219 **Value**
220 )))|(% style="width:39px" %)(((
221 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo"]]
222 )))|(% style="width:100px" %)(((
223 (((
224 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
225 )))
226 )))|(% style="width:77px" %)(((
227 (((
228 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
229 )))
230 )))|(% style="width:47px" %)(((
231 [[Ext>>||anchor="H2.4.5Ext23"]] #
232 )))|(% style="width:51px" %)(((
233 [[Ext value>>||anchor="H2.4.6Extvalue"]]
234 )))
235
236 * The First 6 bytes: has fix meanings for every LHT65S.
237
238 * The 7th byte (EXT #): defines the external sensor model.
239
240 * 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.)
241
242 === 2.4.1 Decoder in TTN V3 ===
243
244
245 When the uplink payload arrives TTNv3, it shows HEX format and not friendly to read. We can add LHT65S decoder in TTNv3 for friendly reading.
246
247 Below is the position to put the decoder and LHT65S decoder can be download from here: [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
248
249
250 [[image:image-20220522234118-10.png||_mstalt="451464" height="353" width="729"]]
251
252
253 === 2.4.2 BAT-Battery Info ===
254
255
256 These two bytes of BAT include the battery state and the actually voltage.
257
258 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:477px" %)
259 |=(% style="width: 69px; background-color:#D9E2F3;color:#0070C0" %)(((
260 **Bit(bit)**
261 )))|=(% style="width: 253px;background-color:#D9E2F3;color:#0070C0" %)[15:14]|=(% style="width: 155px;background-color:#D9E2F3;color:#0070C0" %)[13:0]
262 |(% style="width:66px" %)(((
263 **Value**
264 )))|(% style="width:250px" %)(((
265 BAT Status
266 00(b): Ultra Low ( BAT <= 2.50v)
267 01(b): Low (2.50v <=BAT <= 2.55v)
268 10(b): OK (2.55v <= BAT <=2.65v)
269 11(b): Good (BAT >= 2.65v)
270 )))|(% style="width:152px" %)Actually BAT voltage
271
272 **(b)stands for binary**
273
274
275 [[image:image-20220522235639-1.png||_mstalt="431392" height="139" width="727"]]
276
277
278 Check the battery voltage for LHT65S.
279
280 * BAT status=(0Xcba4>>14)&0xFF=11 (BIN) ，very good
281
282 * Battery Voltage =0xCBA4&0x3FFF=0x0BA4=2980mV
283
284 === 2.4.3 Built-in Temperature ===
285
286
287 [[image:image-20220522235639-2.png||_mstalt="431756" height="138" width="722"]]
288
289 * Temperature:  0x0ABB/100=27.47℃
290
291 [[image:image-20220522235639-3.png||_mstalt="432120"]]
292
293 * Temperature:  (0xF5C6-65536)/100=-26.18℃
294
295 (% style="display:none" %)
296
297 === 2.4.4 Built-in Humidity ===
298
299
300 [[image:image-20220522235639-4.png||_mstalt="432484" height="138" width="722"]]
301
302 * Humidity:    0x025C/10=60.4%
303
304 (% style="display:none" %)
305
306 === 2.4.5 Ext # ===
307
308
309 Bytes for External Sensor:
310
311 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:425px" %)
312 |=(% style="width: 102px; background-color:#D9E2F3;color:#0070C0" %)**EXT # **Value|=(% style="width: 323px;background-color:#D9E2F3;color:#0070C0" %)External Sensor Type
313 |(% style="width:102px" %)0x01|(% style="width:319px" %)Sensor E3, Temperature Sensor
314 |(% style="width:102px" %)0x09|(% style="width:319px" %)Sensor E3, Temperature Sensor, Datalog Mod
315
316 === 2.4.6 Ext value ===
317
318 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
319
320
321 [[image:image-20220522235639-5.png||_mstalt="432848"]]
322
323
324 * DS18B20 temp=0x0ADD/100=27.81℃
325
326 The last 2 bytes of data are meaningless
327
328
329
330 [[image:image-20220522235639-6.png||_mstalt="433212"]]
331
332
333 * External temperature= (0xF54F-65536)/100=-27.37℃
334
335 F54F :  (F54F & 8000 == 1) , temp = (F54F - 65536)/100 = 27.37℃
336
337 （0105 & 8000：Judge whether the highest bit is 1, when the highest bit is 1, it is negative）
338
339 The last 2 bytes of data are meaningless
340
341 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
342
343
344
345 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
346
347
348 (((
349 Timestamp mode is designed for LHT65S 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:
350 )))
351
352 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
353 |=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
354 **Size(bytes)**
355 )))|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)(((
356 **2**
357 )))|=(% style="width: 120px;background-color:#D9E2F3;color:#0070C0" %)(((
358 **2**
359 )))|=(% style="width: 120px;background-color:#D9E2F3;color:#0070C0" %)(((
360 **2**
361 )))|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
362 **1**
363 )))|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)(((
364 **4**
365 )))
366 |(% style="width:110px" %)(((
367 **Value**
368 )))|(% style="width:71px" %)(((
369 External temperature
370 )))|(% style="width:99px" %)(((
371 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
372 )))|(% style="width:132px" %)(((
373 BAT Status & [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
374 )))|(% style="width:54px" %)(((
375 Status & Ext
376 )))|(% style="width:64px" %)(((
377 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
378 )))
379
380 * **Battery status & Built-in Humidity**
381
382 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:461px" %)
383 |=(% style="width: 69px;background-color:#D9E2F3;color:#0070C0" %)Bit(bit)|=(% style="width: 258px;background-color:#D9E2F3;color:#0070C0" %)[15:14]|=(% style="width: 134px;background-color:#D9E2F3;color:#0070C0" %)[11:0]
384 |(% style="width:67px" %)**Value**|(% style="width:256px" %)(((
385 BAT Status
386 00(b): Ultra Low ( BAT <= 2.50v)
387 01(b): Low  (2.50v <=BAT <= 2.55v)
388 10(b): OK   (2.55v <= BAT <=2.65v)
389 11(b): Good   (BAT >= 2.65v)
390 )))|(% style="width:132px" %)(((
391 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
392 )))
393
394 * **Status & Ext Byte**
395
396 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
397 |(% style="background-color:#d9e2f3; color:#0070c0; width:60px" %)**Bits**|(% style="background-color:#d9e2f3; color:#0070c0; width:90px" %)**7**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**6**|(% style="background-color:#d9e2f3; color:#0070c0; width:90px" %)**5**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**4**|(% style="background-color:#d9e2f3; color:#0070c0; width:60px" %)**[3:0]**
398 |(% 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)
399
400 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
401 * (% style="color:blue" %)**Sync time OK**: (%%) 1: Set time ok，0: N/A. After time SYNC request is sent, LHT65S will set this bit to 0 until got the time stamp from the application server.
402 * (% style="color:blue" %)**Unix Time Request**:(%%)  1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65S will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)
403
404 ==== 2.4.6.3 Ext~=6, ADC Sensor(use with E2 Cable) ====
405
406
407 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
408
409 be used to power the external ADC sensor; user can control the power on time for this
410
411 (% style="color:blue" %)**sensor by setting:**
412
413 **AT+EXT=6,timeout**  (% style="color:red" %)**Time to power this sensor, from 0 ~~ 65535ms**
414
415 **For example:**
416
417 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
418
419
420 Or use **downlink command A2** to set the same.
421
422 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
423
424 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.
425
426 [[image:image-20220628150112-1.png||_mstalt="427414" height="241" width="285"]]
427
428
429 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
430
431 [[image:image-20220628150714-4.png||_mstalt="431054"]]
432
433
434 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.
435
436
437 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
438
439 [[image:image-20220628151005-5.png||_mstalt="429546"]]
440
441
442 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
443
444 [[image:image-20220628151056-6.png||_mstalt="431873"]]
445
446
447 3) Within range
448
449 [[image:image-20220628151143-7.png||_mstalt="431210"]]
450
451
452
453 ==== 2.4.6.4 Ext~=2 TMP117 Sensor((% style="display:none" %) (%%)Since Firmware v1.3)(% style="display:none" %) (%%) ====
454
455 [[image:image-20230717151328-8.png]]
456
457 (% style="display:none" %) (%%)
458
459
460
461 (% style="color:blue" %)**Ext=2,Temperature Sensor(TMP117)：**
462
463 [[image:image-20220906102307-7.png||_mstalt="430443"]]
464
465
466 (% style="color:blue" %)**Interrupt Mode and Counting Mode:**(% style="color:blue; display:none" %)** **
467
468 The external cable NE2 can be use for MOD4 and MOD8
469
470
471
472 ==== 2.4.6.5 Ext~=11 SHT31 Sensor ((% style="display:none" %) (%%)Since Firmware v1.4.1) ====
473
474
475
476 [[image:image-20230717151245-7.png]]
477
478 (% style="color:blue" %)**Ext=11,Temperature & Humidity Sensor(SHT31)：**
479
480 [[image:SHT31.png]]
481
482
483
484 ==== 2.4.6.6 Ext~=4 Interrupt Mode(Since Firmware v1.3) ====
485
486
487 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65S will send an uplink when there is a trigger.**
488
489
490 (% style="color:blue" %)**Interrupt Mode can be used to connect to external interrupt sensors such as:**
491
492 (% style="color:#037691" %)**Case 1: Door Sensor.** (%%)3.3v Out for such sensor is just to detect Open/Close.
493
494 In Open State, the power consumption is the same as if there is no probe
495
496 In Close state, the power consumption will be 3uA higher than normal.
497
498 [[image:image-20220906100852-1.png||_mstalt="429156" height="205" width="377"]]
499
500
501 Ext=4,Interrupt Sensor：
502
503 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:504px" %)
504 |(% style="width:101px" %)(((
505 **AT+EXT=4,1**
506 )))|(% style="width:395px" %)(((
507 **Sent uplink packet in both rising and falling interrupt**
508 )))
509 |(% style="width:101px" %)(((
510 **AT+EXT=4,2**
511 )))|(% style="width:395px" %)(((
512 **Sent uplink packet only in falling interrupt**
513 )))
514 |(% style="width:101px" %)(((
515 **AT+EXT=4,3**
516 )))|(% style="width:395px" %)(((
517 **Sent uplink packet only in rising interrupt**
518 )))
519
520 Trigger by falling edge:
521
522 [[image:image-20220906101145-2.png||_mstalt="428324"]]
523
524
525 Trigger by raising edge：
526
527 [[image:image-20220906101145-3.png||_mstalt="428688"]]
528
529
530
531 ==== 2.4.6.7 Ext~=8 Counting Mode(Since Firmware v1.3) ====
532
533
534 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65S will count for every interrupt and uplink periodically.**
535
536
537 (% 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 LHT65S.
538
539 [[image:image-20220906101320-4.png||_mstalt="427336" height="366" width="698"]]
540
541
542 (% style="color:blue" %)**Case 2**(%%):  Normal Flow Sensor: Such flow sensor has higher power consumption and is not suitable to be powered by LHT65S. It is powered by external power and output <3.3v pulse
543
544 [[image:image-20220906101320-5.png||_mstalt="427700" height="353" width="696"]]
545
546
547 Ext=8, Counting Sensor ( 4 bytes)：
548
549 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:330px" %)
550 |(% style="width:131px" %)(((
551 **AT+EXT=8,0**
552 )))|(% style="width:195px" %)(((
553 **Count at falling interrupt**
554 )))
555 |(% style="width:131px" %)(((
556 **AT+EXT=8,1**
557 )))|(% style="width:195px" %)(((
558 **Count at rising interrupt**
559 )))
560 |(% style="width:131px" %)(((
561 **AT+SETCNT=60**
562 )))|(% style="width:195px" %)(((
563 **Sent current count to 60**
564 )))
565
566 [[image:image-20220906101320-6.png||_mstalt="428064"]]
567
568
569 (% style="color:blue" %)**A2 downlink Command：**
570
571 A2 02:  Same as AT+EXT=2 (AT+EXT= second byte)
572
573 A2 06 01 F4:  Same as AT+EXT=6,500 (AT+EXT= second byte, third and fourth bytes)
574
575 A2 04 02:  Same as AT+EXT=4,2 (AT+EXT= second byte, third byte)
576
577 A2 08 01 00:  Same as AT+EXT=8,0 (AT+EXT= second byte, fourth byte)
578
579 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)
580
581
582 ==== 2.4.6.8 Ext~=10, E2 sensor (TMP117)with Unix Timestamp(Since firmware V1.3.2) ====
583
584
585 (((
586 Timestamp mode is designed for LHT65S 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:
587 )))
588
589 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
590 |=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
591 **Size(bytes)**
592 )))|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)(((
593 **2**
594 )))|=(% style="width: 120px;background-color:#D9E2F3;color:#0070C0" %)(((
595 **2**
596 )))|=(% style="width: 120px;background-color:#D9E2F3;color:#0070C0" %)(((
597 **2**
598 )))|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
599 **1**
600 )))|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)(((
601 **4**
602 )))
603 |(% style="width:110px" %)(((
604 **Value**
605 )))|(% style="width:71px" %)(((
606 External temperature
607 )))|(% style="width:99px" %)(((
608 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
609 )))|(% style="width:132px" %)(((
610 BAT Status & [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
611 )))|(% style="width:54px" %)(((
612 Status & Ext
613 )))|(% style="width:64px" %)(((
614 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
615 )))
616
617 * **Battery status & Built-in Humidity**
618
619 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:461px" %)
620 |=(% style="width: 69px;background-color:#D9E2F3;color:#0070C0" %)Bit(bit)|=(% style="width: 258px;background-color:#D9E2F3;color:#0070C0" %)[15:14]|=(% style="width: 134px;background-color:#D9E2F3;color:#0070C0" %)[11:0]
621 |(% style="width:67px" %)**Value**|(% style="width:256px" %)(((
622 BAT Status
623 00(b): Ultra Low ( BAT <= 2.50v)
624 01(b): Low  (2.50v <=BAT <= 2.55v)
625 10(b): OK   (2.55v <= BAT <=2.65v)
626 11(b): Good   (BAT >= 2.65v)
627 )))|(% style="width:132px" %)(((
628 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
629 )))
630
631 * **Status & Ext Byte**
632
633 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
634 |(% style="background-color:#d9e2f3; color:#0070c0; width:60px" %)**Bits**|(% style="background-color:#d9e2f3; color:#0070c0; width:90px" %)**7**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**6**|(% style="background-color:#d9e2f3; color:#0070c0; width:90px" %)**5**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**4**|(% style="background-color:#d9e2f3; color:#0070c0; width:60px" %)**[3:0]**
635 |(% 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)
636
637 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
638 * (% style="color:blue" %)**Sync time OK**: (%%) 1: Set time ok, 0: N/A. After time SYNC request is sent, LHT65S will set this bit to 0 until got the time stamp from the application server.
639 * (% style="color:blue" %)**Unix Time Request**:(%%)  1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65S will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)
640
641 == 2.5 Show data on Datacake ==
642
643
644 (((
645 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:
646 )))
647
648
649 (((
650 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
651 )))
652
653 (((
654 (% 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.
655 )))
656
657
658 (((
659 Add Datacake:
660 )))
661
662
663 [[image:image-20220523000825-7.png||_mstalt="429884" height="262" width="583"]]
664
665
666
667 Select default key as Access Key:
668
669
670 [[image:image-20220523000825-8.png||_mstalt="430248" height="453" width="406"]]
671
672
673 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/]]) , add LHT65 device.
674
675
676 [[image:image-20220523000825-9.png||_mstalt="430612" height="366" width="392"]]
677
678
679 [[image:image-20220523000825-10.png||_mstalt="450619" height="413" width="728"]]
680
681
682 == 2.6 Datalog Feature ==
683
684
685 (((
686 Datalog Feature is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, LHT65S will store the reading for future retrieving purposes. There are two ways for IoT servers to get datalog from LHT65S.
687 )))
688
689
690 === 2.6.1 Ways to get datalog via LoRaWAN ===
691
692
693 There are two methods:
694
695 (% style="color:blue" %)**Method 1:** (%%)IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specified time range.
696
697
698 (% style="color:blue" %)**Method 2: **(%%)Set [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]], LHT65S will wait for ACK for every uplink, when there is no LoRaWAN network, LHT65S 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.
699
700
701 (% style="color:red" %)**Note for method 2:**
702
703 * a) LHT65S will do an ACK check for data records sending to make sure every data arrive server.
704 * b) LHT65S will send data in **CONFIRMED Mode** when PNACKMD=1, but LHT65S 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 LHT65S gets a ACK, LHT65S will consider there is a network connection and resend all NONE-ACK Message.
705
706 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
707
708
709 [[image:image-20220703111700-2.png||_mstalt="426244" height="381" width="1119"]]
710
711
712 === 2.6.2 Unix TimeStamp ===
713
714
715 LHT65S uses Unix TimeStamp format based on
716
717
718 [[image:image-20220523001219-11.png||_mstalt="450450" height="97" width="627"]]
719
720
721
722 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
723
724 Below is the converter example
725
726 [[image:image-20220523001219-12.png||_mstalt="450827" height="298" width="720"]]
727
728
729 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
730
731
732 === 2.6.3 Set Device Time ===
733
734
735 (((
736 (% style="color:blue" %)**There are two ways to set device's time:**
737 )))
738
739 (((
740 **1.  Through LoRaWAN MAC Command (Default settings)**
741 )))
742
743 (((
744 User need to set SYNCMOD=1 to enable sync time via MAC command.
745 )))
746
747 (((
748 Once LHT65S Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to LHT65S. If LHT65S fails to get the time from the server, LHT65S will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).
749 )))
750
751 (((
752 (% 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.**
753 )))
754
755
756 (((
757 **2. Manually Set Time**
758 )))
759
760 (((
761 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
762 )))
763
764
765 === 2.6.4 Poll sensor value ===
766
767
768 User can poll sensor value based on timestamps from the server. Below is the downlink command.
769
770 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:428px" %)
771 |(% style="background-color:#d9e2f3; color:#0070c0; width:58px" %)**1byte**|(% style="background-color:#d9e2f3; color:#0070c0; width:128px" %)**4bytes**|(% style="background-color:#d9e2f3; color:#0070c0; width:123px" %)**4bytes**|(% style="background-color:#d9e2f3; color:#0070c0; width:116px" %)**1byte**
772 |(% style="width:58px" %)31|(% style="width:128px" %)Timestamp start|(% style="width:123px" %)Timestamp end|(% style="width:116px" %)Uplink Interval
773
774 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.
775
776 For example, downlink command (% _mstmutation="1" %)**31 5FC5F350 5FC6 0160 05**(%%)
777
778 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00's data
779
780 Uplink Internal =5s, means LHT65S will send one packet every 5s. range 5~~255s.
781
782
783 === 2.6.5 Datalog Uplink payload ===
784
785
786 The Datalog poll reply uplink will use below payload format.
787
788 **Retrieval data payload:**
789
790 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
791 |=(% style="width: 60px;background-color:#D9E2F3;color:#0070C0" %)(((
792 **Size(bytes)**
793 )))|=(% style="width: 90px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 90px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 100px;background-color:#D9E2F3;color:#0070C0" %)**1**|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)**4**
794 |(% 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"]]
795
796 **Poll message flag & Ext:**
797
798 [[image:image-20221006192726-1.png||_mstalt="430508" height="112" width="754"]]
799
800 (% 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)
801
802 (% style="color:blue" %)**Poll Message Flag**(%%): 1: This message is a poll message reply.
803
804 * Poll Message Flag is set to 1.
805
806 * Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
807
808 For example, in US915 band, the max payload for different DR is:
809
810 (% style="color:blue" %)**a) DR0:** (%%)max is 11 bytes so one entry of data
811
812 (% style="color:blue" %)**b) DR1:**(%%) max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
813
814 (% style="color:blue" %)**c) DR2:**(%%) total payload includes 11 entries of data
815
816 (% style="color:blue" %)**d) DR3: **(%%)total payload includes 22 entries of data.
817
818 If devise doesn't have any data in the polling time. Device will uplink 11 bytes of 0   
819
820
821 **Example:**
822
823 If LHT65S has below data inside Flash:
824
825 [[image:image-20230426171833-4.png]]
826
827
828 If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705
829
830 Where : Start time: 60065F97 = time 21/1/19 04:27:03
831
832 Stop time: 60066DA7= time 21/1/19 05:27:03
833
834
835 **LHT65S will uplink this payload.**
836
837 [[image:image-20220523001219-13.png||_mstalt="451204" height="421" style="text-align:left" width="727"]]
838
839
840 __**7FFF089801464160065F97**__ **__7FFF__ __088E__ __014B__ __41__ __60066009__** 7FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
841
842 Where the first 11 bytes is for the first entry:
843
844 7FFF089801464160065F97
845
846 Ext sensor data=0x7FFF/100=327.67
847
848 Temp=0x088E/100=22.00
849
850 Hum=0x014B/10=32.6
851
852 poll message flag & Ext=0x41,means reply data,Ext=1
853
854 Unix time is 0x60066009=1611030423s=21/1/19 04:27:03
855
856
857 == 2.7 Alarm Mode & Feature "Multi sampling, one uplink" ==
858
859
860 (((
861 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.
862 )))
863
864 (((
865 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
866
867
868 === 2.7.1 ALARM MODE ( Since v1.3.1 firmware) ===
869
870
871 **Internal GXHT30 temperature alarm(Acquisition time: fixed at one minute)**
872
873 (((
874 (% class="box infomessage" %)
875 (((
876 **AT+WMOD=3**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
877
878 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
879
880 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
881
882 (% _mstmutation="1" %)**AT+ARTEMP=? **(%%):  Gets the alarm range of the internal temperature sensor(% style="display:none" %)
883
884 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
885
886 **AT+LEDALARM=1** :       Enable LED visual Alarm.
887 )))
888 )))
889
890 (% style="color:#4f81bd" %)**Downlink Command:**
891
892 AT+WMOD=1:  A501  , AT+WMOD=0 :  A600
893
894 AT+CITEMP=1 : A60001
895
896 AT+ARTEMP=1,60  :  A70001003C
897
898 AT+ARTEMP=-16,60 :  A7FFF0003C
899
900 AT+LEDALARM=1  :  3601
901
902
903 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
904
905 Total bytes: 8 bytes
906
907 **Example: **AA0100010001003C
908
909 WMOD=01
910
911 CITEMP=0001
912
913 TEMPlow=0001
914
915 TEMPhigh=003C
916
917
918 **DS18B20 and TMP117 Threshold Alarm**
919
920 **~ AT+WMOD=1,60,-10,20**
921
922 (% style="color:#4f81bd" %)**Downlink Command:**
923
924 **Example: **A5013CFC180014
925
926 MOD=01
927
928 CITEMP=3C(S)
929
930 TEMPlow=FC18
931
932 TEMPhigh=0014
933
934
935 **Fluctuation alarm for DS18B20 and TMP117(Acquisition time: minimum 1s)**
936
937 **AT+WMOD=2,60,5** 
938
939 (% style="color:#4f81bd" %)**Downlink Command:**
940
941 **Example: **A5023C05
942
943 MOD=02
944
945 CITEMP=3C(S)
946
947 temperature fluctuation=05
948
949
950 **Sampling multiple times and uplink together**
951
952 **AT+WMOD=3,1,60,20,-16,32,1**   
953
954 Explain:
955
956 * (% style="color:#037691" %)**parameter1: **(%%)Set Working Mode to **Mode 3**
957 * (% style="color:#037691" %)**parameter2:**(%%) Set the temperature sampling mode to** 1**(1:DS18B20;2:TMP117;3:** **Internal GXHT30).
958 * (% style="color:#037691" %)**parameter3: **(%%)Sampling Interval is **60**s.
959 * (% 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)
960 * (% style="color:#037691" %)**parameter5 & parameter6: **(%%)Temperature alarm range is **-16** to **32**°C,
961 * (% 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.
962
963 (% style="color:#4f81bd" %)**Downlink Command:**
964
965 **Example: **A50301003C14FFF0002001
966
967 MOD=03
968
969 TEMP=DS18B20
970
971 CITEMP=003C(S)
972
973 Total number of acquisitions=14
974
975 TEMPlow=FFF0
976
977 TEMPhigh=0020
978
979 ARTEMP=01
980
981
982 **Uplink payload( Fport=3)**
983
984 **Example: CBEA**01**0992**//0A41//**09C4**
985
986 BatV=CBEA
987
988 TEMP=DS18B20
989
990 Temp1=0992  ~/~/ 24.50℃
991
992 Temp2=0A41  ~/~/ 26.25℃
993
994 Temp3=09C4  ~/~/ 25.00℃
995
996 (% style="color:red" %)**Note: This uplink will automatically select the appropriate DR according to the data length**
997
998 (% style="color:red" %)** In this mode, the temperature resolution of ds18b20 is 0.25℃ to save power consumption**
999 )))
1000
1001
1002 === 2.7.2 ALARM MODE ( Before v1.3.1 firmware) ===
1003
1004
1005 (% class="box infomessage" %)
1006 (((
1007 (((
1008 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
1009 )))
1010
1011 (((
1012 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1013 )))
1014
1015 (((
1016 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1017 )))
1018
1019 (((
1020 (% _mstmutation="1" %)**AT+ARTEMP=? **(%%):  Gets the alarm range of the internal temperature sensor(% style="display:none" %)
1021 )))
1022
1023 (((
1024 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1025 )))
1026 )))
1027
1028 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1029
1030 Total bytes: 8 bytes
1031
1032 **Example:**AA0100010001003C
1033
1034 WMOD=01
1035
1036 CITEMP=0001
1037
1038 TEMPlow=0001
1039
1040 TEMPhigh=003C
1041
1042
1043 == 2.8 LED Indicator ==
1044
1045
1046 The LHT65 has a triple color LED which for easy showing different stage .
1047
1048 While user press ACT button, the LED will work as per LED status with ACT button.
1049
1050 In a normal working state:
1051
1052 * For each uplink, the BLUE LED or RED LED will blink once.
1053 BLUE LED when external sensor is connected.
1054 * RED LED when external sensor is not connected
1055 * For each success downlink, the PURPLE LED will blink once
1056
1057 == 2.9 installation ==
1058
1059
1060 [[image:image-20220516231650-1.png||_mstalt="428597" height="436" width="428"]]
1061
1062
1063 = 3. Sensors and Accessories =
1064
1065 == 3.1 E2 Extension Cable ==
1066
1067
1068 [[image:image-20220619092222-1.png||_mstalt="429533" height="182" width="188"]][[image:image-20220619092313-2.png||_mstalt="430222" height="182" width="173"]]
1069
1070
1071 **1m long breakout cable for LHT65S. Features:**
1072
1073 * (((
1074 Use for AT Command, works for both LHT52/LHT65S
1075 )))
1076 * (((
1077 Update firmware for LHT65S, works for both LHT52/LHT65S
1078 )))
1079 * (((
1080 Supports ADC mode to monitor external ADC
1081 )))
1082 * (((
1083 Supports Interrupt mode
1084 )))
1085 * (((
1086 Exposed All pins from the LHT65S Type-C connector.
1087
1088
1089
1090 )))
1091
1092 [[image:image-20220619092421-3.png||_mstalt="430547" height="371" width="529"]]
1093
1094
1095 == 3.2 E3 Temperature Probe ==
1096
1097
1098 [[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"]]
1099
1100
1101 Temperature sensor with 2 meters cable long
1102
1103 * Resolution: 0.0625 °C
1104 * ±0.5°C accuracy from -10°C to +85°C
1105 * ±2°C accuracy from -55°C to +125°C
1106 * Operating Range: -40 ~~ 125 °C
1107 * Working voltage 2.35v ~~ 5v
1108
1109 == 3.3 E31F Temperature Probe ==
1110
1111
1112 [[image:65N-E31F-1.jpg||height="169" width="170"]] [[image:image-20230717151424-9.png||height="221" width="204"]](% style="display:none" %)
1113
1114
1115 Temperature sensor with 1 meters cable long
1116
1117
1118 **Built-in Temperature Sensor:**
1119
1120 * Resolution: 0.01 °C
1121 * Accuracy Tolerance : Typ ±0.3 °C
1122 * Long Term Drift: < 0.02 °C/yr
1123 * Operating Range: -40 ~~ 80 °C
1124
1125 **Built-in Humidity Sensor:**
1126
1127 * Resolution: 0.04 % RH
1128 * Accuracy Tolerance : Typ ±3 % RH
1129 * Long Term Drift: < 0.02 °C/yr
1130 * Operating Range: 0 ~~ 96 % RH
1131
1132 **External Temperature Sensor :**
1133
1134 * Resolution: 0.01 °C
1135 * Accuracy Tolerance : Typical ±0.3 °C
1136 * Long Term Drift: < 0.02 °C/yr
1137 * Operating Range: -40 ~~ 125 °C
1138
1139 **External Humidity Sensor :**
1140
1141 * Resolution: 0.04 % RH
1142 * Accuracy Tolerance : Typ ±3 % RH
1143 * Long Term Drift: < 0.02 °C/yr
1144 * Operating Range: 0 ~~ 96 % RH
1145
1146 = 4. Configure LHT65S via AT command or LoRaWAN downlink =
1147
1148
1149 (((
1150 Use can configure LHT65S via AT Command or LoRaWAN Downlink.
1151 )))
1152
1153 * (((
1154 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1155 )))
1156
1157 * (((
1158 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1159 )))
1160
1161 (((
1162 There are two kinds of commands to configure LHT65S, they are:
1163 )))
1164
1165 * (((
1166 (% style="color:#4f81bd" %)**General Commands**.
1167 )))
1168
1169 (((
1170 These commands are to configure:
1171 )))
1172
1173 1. (((
1174 General system settings like: uplink interval.
1175 )))
1176 1. (((
1177 LoRaWAN protocol & radio-related commands.
1178 )))
1179
1180 (((
1181 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]]
1182 )))
1183
1184 * (((
1185 (% style="color:#4f81bd" %)**Commands special design for LHT65S**
1186 )))
1187
1188 (((
1189 These commands are only valid for LHT65S, as below:
1190 )))
1191
1192
1193 == 4.1 Set Transmit Interval Time ==
1194
1195
1196 Feature: Change LoRaWAN End Node Transmit Interval.
1197
1198
1199 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1200
1201 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:501px" %)
1202 |(% style="background-color:#d9e2f3; color:#0070c0; width:155px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:166px" %)**Function**|(% style="background-color:#d9e2f3; color:#0070c0; width:180px" %)**Response**
1203 |(% style="width:155px" %)AT+TDC=?|(% style="width:162px" %)Show current transmit Interval|(% style="width:177px" %)30000 OK the interval is 30000ms = 30s
1204 |(% style="width:155px" %)AT+TDC=60000|(% style="width:162px" %)Set Transmit Interval|(% style="width:177px" %)OK Set transmit interval to 60000ms = 60 seconds
1205
1206 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1207
1208 Format: Command Code (0x01) followed by 3 bytes time value.
1209
1210 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
1211
1212 * **Example 1**: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
1213
1214 * **Example 2**: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
1215
1216 == 4.2 Set External Sensor Mode ==
1217
1218
1219 Feature: Change External Sensor Mode.
1220
1221 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1222
1223 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:468px" %)
1224 |(% style="background-color:#d9e2f3; color:#0070c0; width:155px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:153px" %)**Function**|(% style="background-color:#d9e2f3; color:#0070c0; width:160px" %)**Response**
1225 |(% style="width:155px" %)AT+EXT=?|(% style="width:151px" %)Get current external sensor mode|(% style="width:158px" %)1 OK External Sensor mode =1
1226 |(% style="width:155px" %)AT+EXT=1|(% colspan="2" rowspan="1" style="width:309px" %)Set external sensor mode to 1
1227 |(% style="width:155px" %)AT+EXT=9|(% colspan="2" rowspan="1" style="width:309px" %)Set to external DS18B20 with timestamp
1228
1229 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1230
1231 Total bytes: 2 ~~ 5 bytes
1232
1233 **Example:**
1234
1235 * 0xA201: Set external sensor type to E1
1236
1237 * 0xA209: Same as AT+EXT=9
1238
1239 * 0xA20702003c: Same as AT+SETCNT=60
1240
1241 == 4.3 Enable/Disable uplink Temperature probe ID ==
1242
1243
1244 (((
1245 Feature: If PID is enabled, device will send the temperature probe ID on:
1246 )))
1247
1248 * (((
1249 First Packet after OTAA Join
1250 )))
1251 * (((
1252 Every 24 hours since the first packet.
1253 )))
1254
1255 (((
1256 PID is default set to disable (0)
1257
1258
1259 )))
1260
1261 (% style="color:#4f81bd" %)**AT Command:**
1262
1263 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:381px" %)
1264 |(% style="background-color:#d9e2f3; color:#0070c0; width:155px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:138px" %)**Function**|(% style="background-color:#d9e2f3; color:#0070c0; width:88px" %)**Response**
1265 |(% style="width:155px" %)AT+PID=1|(% style="width:136px" %)Enable PID uplink|(% style="width:86px" %)OK
1266
1267 (% style="color:#4f81bd" %)**Downlink Command:**
1268
1269 * **0xA800**  **~-~->** AT+PID=0
1270 * **0xA801**     **~-~->** AT+PID=1
1271
1272 == 4.4 Set Password ==
1273
1274
1275 Feature: Set device password, max 9 digits
1276
1277 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1278
1279 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:372px" %)
1280 |(% style="background-color:#d9e2f3; color:#0070c0; width:155px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:128px" %)**Function**|(% style="background-color:#d9e2f3; color:#0070c0; width:89px" %)**Response**
1281 |(% style="width:155px" %)AT+PWORD=?|(% style="width:124px" %)Show password|(% style="width:86px" %)(((
1282 123456
1283
1284 OK
1285 )))
1286 |(% style="width:155px" %)AT+PWORD=999999|(% style="width:124px" %)Set password|(% style="width:86px" %)OK
1287
1288 (% style="color:#4f81bd" %)**Downlink Command:**
1289
1290 No downlink command for this feature.
1291
1292
1293 == 4.5 Quit AT Command ==
1294
1295
1296 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1297
1298 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1299
1300 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:433px" %)
1301 |(% style="background-color:#d9e2f3; color:#0070c0; width:155px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:191px" %)**Function**|(% style="background-color:#d9e2f3; color:#0070c0; width:86px" %)**Response**
1302 |(% style="width:155px" %)AT+DISAT|(% style="width:191px" %)Quit AT Commands mode|(% style="width:86px" %)OK
1303
1304 (% style="color:#4f81bd" %)**Downlink Command:**
1305
1306 No downlink command for this feature.
1307
1308
1309 == 4.6 Set to sleep mode ==
1310
1311
1312 Feature: Set device to sleep mode
1313
1314 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1315 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1316
1317 (% style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1318
1319 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:513px" %)
1320 |(% style="background-color:#d9e2f3; color:#0070c0; width:155px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:140px" %)**Function**|(% style="background-color:#d9e2f3; color:#0070c0; width:218px" %)**Response**
1321 |(% style="width:155px" %)AT+SLEEP|(% style="width:139px" %)Set to sleep mode|(% style="width:213px" %)(((
1322 Clear all stored sensor data…
1323
1324 OK
1325 )))
1326
1327 (% style="color:#4f81bd" %)**Downlink Command:**
1328
1329 * There is no downlink command to set to Sleep mode.
1330
1331 == 4.7 Set system time ==
1332
1333
1334 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1335
1336 (% style="color:#4f81bd" %)**AT Command:**
1337
1338 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:506px" %)
1339 |(% style="background-color:#d9e2f3; color:#0070c0; width:188px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:318px" %)**Function**
1340 |(% style="width:154px" %)AT+TIMESTAMP=1611104352|(% style="width:285px" %)(((
1341 OK
1342
1343 Set System time to 2021-01-20 00:59:12
1344 )))
1345
1346 (% style="color:#4f81bd" %)**Downlink Command:**
1347
1348 0x306007806000  ~/~/  Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1349
1350
1351 == 4.8 Set Time Sync Mode ==
1352
1353
1354 (((
1355 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1356 )))
1357
1358 (((
1359 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.
1360 )))
1361
1362 (% style="color:#4f81bd" %)**AT Command:**
1363
1364 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:475px" %)
1365 |(% style="background-color:#d9e2f3; color:#0070c0; width:156px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:315px" %)**Function**
1366 |(% style="width:156px" %)AT+SYNCMOD=1|(% style="width:315px" %)Enable Sync system time via LoRaWAN MAC Command (DeviceTimeReq)
1367
1368 (% style="color:#4f81bd" %)**Downlink Command:**
1369
1370 0x28 01  ~/~/  Same As AT+SYNCMOD=1
1371 0x28 00  ~/~/  Same As AT+SYNCMOD=0
1372
1373
1374 == 4.9 Set Time Sync Interval ==
1375
1376
1377 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1378
1379 (% style="color:#4f81bd" %)**AT Command:**
1380
1381 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:472px" %)
1382 |(% style="background-color:#d9e2f3; color:#0070c0; width:158px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:314px" %)**Function**
1383 |(% style="width:156px" %)AT+SYNCTDC=0x0A |(% style="width:311px" %)Set SYNCTDC to 10 (0x0A), so the sync time is 10 days.
1384
1385 (% style="color:#4f81bd" %)**Downlink Command:**
1386
1387 **0x29 0A**  ~/~/ Same as AT+SYNCTDC=0x0A
1388
1389
1390 == 4.10 Print data entries base on page. ==
1391
1392
1393 Feature: Print the sector data from start page to stop page (max is 416 pages).
1394
1395 (% style="color:#4f81bd" %)**AT Command: AT+PDTA**
1396
1397 [[image:image-20230426164330-2.png]]
1398
1399 (% style="color:#4f81bd" %)**Downlink Command:**
1400
1401 No downlink commands for feature
1402
1403
1404 == 4.11 Print last few data entries. ==
1405
1406
1407 Feature: Print the last few data entries
1408
1409 (% style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1410
1411 [[image:image-20230426164932-3.png]]
1412
1413 (% style="color:#4f81bd" %)**Downlink Command:**
1414
1415 No downlink commands for feature
1416
1417
1418 == 4.12 Clear Flash Record ==
1419
1420
1421 Feature: Clear flash storage for data log feature.
1422
1423 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1424
1425 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:503px" %)
1426 |(% style="background-color:#d9e2f3; color:#0070c0; width:157px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:137px" %)**Function**|(% style="background-color:#d9e2f3; color:#0070c0; width:209px" %)**Response**
1427 |(% style="width:155px" %)AT+CLRDTA |(% style="width:134px" %)Clear date record|(% style="width:209px" %)(((
1428 Clear all stored sensor data…
1429
1430 OK
1431 )))
1432
1433 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1434
1435 * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1436
1437 == 4.13 Auto Send None-ACK messages ==
1438
1439
1440 Feature: LHT65S will wait for ACK for each uplink, If LHT65S doesn't get ACK from the IoT server, it will consider the message doesn't arrive server and store it. LHT65S keeps sending messages in normal periodically. Once LHT65S gets ACK from a server, it will consider the network is ok and start to send the not-arrive message.
1441
1442 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1443
1444 The default factory setting is 0
1445
1446 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:367px" %)
1447 |=(% style="width: 158px;background-color:#D9E2F3;color:#0070C0" %)**Command Example**|=(% style="width: 120px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 87px;background-color:#D9E2F3;color:#0070C0" %)**Response**
1448 |(% style="width:158px" %)AT+PNACKMD=1|(% style="width:118px" %)Poll None-ACK message|(% style="width:87px" %)OK
1449
1450 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1451
1452 * Example: 0x3401  ~/~/  Same as AT+PNACKMD=1
1453
1454 == 4.14 Modified WMOD command for external sensor TMP117 or DS18B20 temperature alarm(Since firmware 1.3.0) ==
1455
1456
1457 Feature: Set internal and external temperature sensor alarms.
1458
1459 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
1460 |=(% style="width: 250px;background-color:#D9E2F3;color:#0070C0" %)**Command Example**|=(% style="width: 200px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)**Response**
1461 |(% style="width:268px" %)AT+WMOD=parameter1,parameter2,parameter3,parameter4|(% style="width:255px" %)Set internal and external temperature sensor alarms|(% style="width:181px" %)OK
1462
1463 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
1464
1465 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
1466
1467 0): Cancel
1468
1469 1): Threshold alarm
1470
1471 2): Fluctuation alarm
1472
1473
1474 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
1475
1476 (% 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.**
1477
1478
1479 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
1480
1481 1):  If Alarm Mode is set to 1: Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
1482
1483 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
1484
1485
1486 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.
1487
1488 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
1489
1490 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
1491
1492
1493 (% style="color:#4f81bd" %)**Downlink Command: 0xA5**
1494
1495 0xA5 00 ~-~- AT+WMOD=0.
1496
1497 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 )
1498
1499 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))
1500
1501 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
1502
1503 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.
1504
1505
1506 = 5. Battery & How to replace =
1507
1508 == 5.1 Battery Type ==
1509
1510
1511 (((
1512 LHT65S 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.
1513 )))
1514
1515 (((
1516 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1517
1518
1519 [[image:image-20220515075034-1.png||_mstalt="428961" height="208" width="644"]]
1520 )))
1521
1522 The minimum Working Voltage for the LHT65S is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1523
1524
1525 == 5.2 Replace Battery ==
1526
1527
1528 LHT65S 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.
1529
1530 [[image:image-20220515075440-2.png||_mstalt="429546" height="338" width="272"]][[image:image-20220515075625-3.png||_mstalt="431574" height="193" width="257"]]
1531
1532
1533 == 5.3 Battery Life Analyze ==
1534
1535
1536 (((
1537 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:
1538 [[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]]
1539 )))
1540
1541
1542 (((
1543 A full detail test report for LHT65S 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]]
1544 )))
1545
1546
1547 = 6. FAQ =
1548
1549 == 6.1 How to use AT Command? ==
1550
1551
1552 LHT65S 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.
1553
1554 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1555
1556
1557 **Connection:**
1558
1559 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1560 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1561 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1562
1563 (((
1564 (% _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)**
1565
1566 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 LHT65S. 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.
1567 )))
1568
1569
1570 Input password and ATZ to activate LHT65S,As shown below:
1571
1572 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1573
1574
1575 AT Command List is as below:
1576
1577 AT+<CMD>? :  Help on <CMD>
1578
1579 AT+<CMD> :  Run <CMD>
1580
1581 AT+<CMD>=<value> :  Set the value
1582
1583 AT+<CMD>=? :  Get the value
1584
1585 AT+DEBUG:  Set more info output
1586
1587 ATZ:  Trig a reset of the MCU
1588
1589 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1590
1591 AT+DEUI:  Get or Set the Device EUI
1592
1593 AT+DADDR:  Get or Set the Device Address
1594
1595 AT+APPKEY:  Get or Set the Application Key
1596
1597 AT+NWKSKEY:  Get or Set the Network Session Key
1598
1599 AT+APPSKEY:  Get or Set the Application Session Key
1600
1601 AT+APPEUI:  Get or Set the Application EUI
1602
1603 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1604
1605 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1606
1607 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1608
1609 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1610
1611 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1612
1613 AT+RX2FQ:  Get or Set the Rx2 window frequency
1614
1615 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1616
1617 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1618
1619 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1620
1621 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1622
1623 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1624
1625 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1626
1627 AT+NWKID:  Get or Set the Network ID
1628
1629 AT+FCU:  Get or Set the Frame Counter Uplink
1630
1631 AT+FCD:  Get or Set the Frame Counter Downlink
1632
1633 AT+CLASS:  Get or Set the Device Class
1634
1635 AT+JOIN:  Join network
1636
1637 AT+NJS:  Get the join status
1638
1639 AT+SENDB:  Send hexadecimal data along with the application port
1640
1641 AT+SEND:  Send text data along with the application port
1642
1643 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1644
1645 AT+RECV:  Print last received data in raw format
1646
1647 AT+VER:  Get current image version and Frequency Band
1648
1649 AT+CFM:  Get or Set the confirmation mode (0-1)
1650
1651 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1652
1653 AT+SNR:  Get the SNR of the last received packet
1654
1655 AT+RSSI:  Get the RSSI of the last received packet
1656
1657 AT+TDC:  Get or set the application data transmission interval in ms
1658
1659 AT+PORT:  Get or set the application port
1660
1661 AT+DISAT:  Disable AT commands
1662
1663 AT+PWORD: Set password, max 9 digits
1664
1665 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1666
1667 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1668
1669 AT+PDTA:  Print the sector data from start page to stop page
1670
1671 AT+PLDTA:  Print the last few sets of data
1672
1673 AT+CLRDTA:  Clear the storage, record position back to 1st
1674
1675 AT+SLEEP:  Set sleep mode
1676
1677 AT+EXT:  Get or Set external sensor model
1678
1679 AT+BAT:  Get the current battery voltage in mV
1680
1681 AT+CFG:  Print all configurations
1682
1683 AT+WMOD:  Get or Set Work Mode
1684
1685 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1686
1687 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1688
1689 AT+SETCNT:  Set the count at present
1690
1691 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1692
1693 AT+RPL:  Get or set response level
1694
1695 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1696
1697 AT+LEAPSEC:  Get or Set Leap Second
1698
1699 AT+SYNCMOD:  Get or Set time synchronization method
1700
1701 AT+SYNCTDC:  Get or set time synchronization interval in day
1702
1703 AT+PID:  Get or set the PID
1704
1705
1706 == 6.2 Where to use AT commands and Downlink commands ==
1707
1708
1709 **AT commands: **
1710
1711 [[image:image-20220620153708-1.png||_mstalt="429806" height="603" width="723"]]
1712
1713
1714 **Downlink commands:**
1715
1716
1717 (% style="color:blue" %)**TTN:**
1718
1719 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1720
1721
1722
1723 (% style="color:blue" %)**Helium: **
1724
1725 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1726
1727
1728
1729 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1730
1731
1732 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1733
1734
1735 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1736
1737
1738
1739 (% style="color:blue" %)**Aws:**
1740
1741 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1742
1743
1744 == 6.3 How to change the uplink interval? ==
1745
1746
1747 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);"]]
1748
1749
1750 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1751
1752
1753 [[image:image-20220615153355-1.png||_mstalt="430222"]]
1754
1755 [[image:1655802313617-381.png||_mstalt="293917"]]
1756
1757
1758 (((
1759 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 LHT65S. 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.
1760 )))
1761
1762
1763 Input password and ATZ to activate LHT65S, As shown below:
1764
1765 [[image:image-20220615154519-3.png||_mstalt="431925" height="672" width="807"]]
1766
1767
1768 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1769
1770
1771 [[image:image-20220615153355-1.png||_mstalt="430222"]]
1772
1773
1774 (% 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.
1775
1776 [[image:image-20220615170542-5.png||_mstalt="430638"]]
1777
1778
1779
1780 (% _mstmutation="1" style="color:blue" %)**Step2**(%%): wiring method.(% style="display:none" %)
1781
1782 First connect the four lines;(% style="display:none" %)
1783
1784 [[image:image-20220621170938-1.png||_mstalt="431340" height="413" width="419"]],(% style="display:none" %)
1785
1786
1787 Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1788
1789 [[image:image-20220621170938-2.png||_mstalt="431704"]]
1790
1791
1792
1793 (% style="color:blue" %)**Step3: **(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1794
1795 [[image:image-20220615171334-6.png||_mstalt="431028"]]
1796
1797
1798 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1799
1800
1801 When this interface appears, it indicates that the download has been completed.
1802
1803 [[image:image-20220620160723-8.png||_mstalt="430703"]]
1804
1805
1806 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1807
1808
1809 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1810
1811
1812 [[image:image-20220623110706-1.png||_mstalt="427869"]]
1813
1814
1815 **UART Port of LHT65S:**
1816
1817 * (% class="mark" %)**PB0: RXD**
1818 * (% class="mark" %)**PB1: TXD**
1819 * (% class="mark" %)**GND**
1820
1821 [[image:image-20220623112117-4.png||_mstalt="428350" height="459" width="343"]]
1822
1823
1824 (((
1825 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 LHT65S. 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.
1826 )))
1827
1828
1829 Input password and ATZ to activate LHT65S,As shown below:
1830
1831 [[image:image-20220615154519-3.png||_mstalt="431925" height="672" width="807"]]
1832
1833
1834 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1835
1836
1837 [[image:image-20220623110706-1.png||_mstalt="427869"]]
1838
1839
1840 (% 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.
1841
1842 [[image:image-20220615170542-5.png||_mstalt="430638"]]
1843
1844
1845
1846 (% _mstmutation="1" style="color:blue" %)**Step2**(%%): wiring method.(% style="display:none" %)
1847
1848 First connect the four lines;
1849
1850 [[image:image-20220623113959-5.png||_mstalt="433485" height="528" width="397"]]
1851
1852 Connect A8 and GND with Dupont wire for a while and then separate, enter reset mode
1853
1854
1855
1856 (% style="color:blue" %)**Step3: **(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1857
1858 [[image:image-20220615171334-6.png||_mstalt="431028"]]
1859
1860
1861 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1862
1863
1864 When this interface appears, it indicates that the download has been completed.
1865
1866 [[image:image-20220620160723-8.png||_mstalt="430703"]]
1867
1868
1869 Finally,Disconnect 3.3v, Connect A8 and GND with Dupont wire for a while and then separate, exit reset mode
1870
1871
1872 == 6.8 Why can't I see the datalog information ==
1873
1874
1875 ~1. The time is not aligned, and the correct query command is not used.
1876
1877 2. Decoder error, did not parse the datalog data, the data was filtered.
1878
1879
1880 = 7. Order Info =
1881
1882
1883 Part Number: (% style="color:#4f81bd" %)** LHT65S-XX-YY**
1884
1885 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1886
1887 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1888 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1889 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1890 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1891 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1892 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**US915**(%%): LoRaWAN US915 band
1893 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1894 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1895
1896 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1897
1898 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1899
1900 = 8. Packing Info =
1901
1902
1903 **Package Includes**:
1904
1905 * LHT65S Temperature & Humidity Sensor x 1
1906 * Optional external sensor
1907
1908
1909 = 9. Reference material =
1910
1911
1912 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0]]
1913
1914 = 10. FCC Warning =
1915
1916
1917 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1918
1919 (1) This device may not cause harmful interference;
1920
1921 (2) this device must accept any interference received, including interference that may cause undesired operation.