Last modified by Xiaoling on 2023/08/08 13:52
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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
58
59 == 1.3 Specification ==
60
61
62 (% style="color:#037691" %)**Built-in Temperature Sensor:**
63
64 * Resolution: 0.01 °C
65 * Accuracy Tolerance : Typ ±0.3 °C
66 * Long Term Drift: < 0.02 °C/yr
67 * Operating Range: -40 ~~ 85 °C
68
69 (% style="color:#037691" %)**Built-in Humidity Sensor:**
70
71 * Resolution: 0.04 %RH
72 * Accuracy Tolerance : Typ ±3 %RH
73 * Long Term Drift: < 0.02 °C/yr
74 * Operating Range: 0 ~~ 96 %RH
75
76 (% style="color:#037691" %)**External Temperature Sensor:**
77
78 * Resolution: 0.0625 °C
79 * ±0.5°C accuracy from -10°C to +85°C
80 * ±2°C accuracy from -55°C to +125°C
81 * Operating Range: -55 °C ~~ 125 °C
82
83
84
85 = 2. Connect LHT65S to IoT Server =
86
87 == 2.1 How does LHT65S work? ==
88
89
90 (((
91 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.
92 )))
93
94 (((
95 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.
96 )))
97
98
99 == 2.2 How to Activate LHT65S? ==
100
101
102 (((
103 The LHT65S has two working modes:
104 )))
105
106 * (((
107 (% 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.
108 )))
109 * (((
110 (% 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. 
111 )))
112
113 (((
114 The LHT65S is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
115 )))
116
117
118 [[image:image-20230808114539-3.png||height="566" width="304"]]
119
120 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
121 |=(% 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**
122 |(% 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" %)(((
123 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.
124 )))
125 |(% 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" %)(((
126 (% style="background-color:#f2f2f2; color:green" %)**Green led**(%%) will fast blink 5 times, LHT65S will enter working mode and start to JOIN LoRaWAN network.
127 (% style="background-color:#f2f2f2; color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after join in network.
128 )))
129 |(% 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.
130
131
132
133 == 2.3 Example to join LoRaWAN network ==
134
135
136 (% class="wikigeneratedid" %)
137 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.
138
139 (% class="wikigeneratedid" %)
140 [[image:image-20230808114712-4.png||height="425" width="727"]]
141
142 (((
143 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:
144 )))
145
146
147 === 2.3.1 Step 1: Create Device n TTN ===
148
149
150 (((
151 Create a device in TTN V3 with the OTAA keys from LHT65S.
152 )))
153
154 (((
155 Each LHT65S is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
156 )))
157
158 [[image:image-20230426083319-1.png||height="258" width="556"]]
159
160 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
161
162 Add APP EUI in the application.
163
164
165 [[image:image-20220522232916-3.png||_mstalt="430495"]]
166
167
168 [[image:image-20220522232932-4.png||_mstalt="430157"]]
169
170
171 [[image:image-20220522232954-5.png||_mstalt="431847"]]
172
173
174
175 (% style="color:red" %)**Note: LHT65S use same payload as LHT65.**
176
177
178 [[image:image-20220522233026-6.png||_mstalt="429403"]]
179
180
181 Input APP EUI,  APP KEY and DEV EUI:
182
183
184 [[image:image-20220522233118-7.png||_mstalt="430430"]]
185
186
187 === 2.3.2 Step 2: Activate LHT65S by pressing the ACT button for more than 5 seconds. ===
188
189
190 (((
191 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.
192 )))
193
194 [[image:image-20220522233300-8.png||_mstalt="428389" height="219" width="722"]]
195
196
197 == 2.4 Uplink Payload (Fport~=2) ==
198
199
200 (((
201 The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and (% style="color:#4f81bd" %)**every 20 minutes**(%%) send one uplink by default.
202 )))
203
204 (((
205 After each uplink, the (% style="color:blue" %)**BLUE LED**(%%) will blink once.
206 )))
207
208 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:390px" %)
209 |=(% style="width: 60px;background-color:#D9E2F3;color:#0070C0" %)(((
210 **Size(bytes)**
211 )))|=(% style="width: 30px;background-color:#D9E2F3;color:#0070C0" %)(((
212 **2**
213 )))|=(% style="width: 100px;background-color:#D9E2F3;color:#0070C0" %)(((
214 **2**
215 )))|=(% style="width: 100px;background-color:#D9E2F3;color:#0070C0" %)(((
216 **2**
217 )))|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
218 **1**
219 )))|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
220 **4**
221 )))
222 |(% style="width:97px" %)(((
223 **Value**
224 )))|(% style="width:39px" %)(((
225 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo"]]
226 )))|(% style="width:100px" %)(((
227 (((
228 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
229 )))
230 )))|(% style="width:77px" %)(((
231 (((
232 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
233 )))
234 )))|(% style="width:47px" %)(((
235 [[Ext>>||anchor="H2.4.5Ext23"]] #
236 )))|(% style="width:51px" %)(((
237 [[Ext value>>||anchor="H2.4.6Extvalue"]]
238 )))
239
240 * The First 6 bytes: has fix meanings for every LHT65S.
241
242 * The 7th byte (EXT #): defines the external sensor model.
243
244 * 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.)
245
246
247
248 === 2.4.1 Decoder in TTN V3 ===
249
250
251 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.
252
253 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]]
254
255
256 [[image:image-20220522234118-10.png||_mstalt="451464" height="353" width="729"]]
257
258
259 === 2.4.2 BAT-Battery Info ===
260
261
262 These two bytes of BAT include the battery state and the actually voltage.
263
264 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:477px" %)
265 |=(% style="width: 69px; background-color:#D9E2F3;color:#0070C0" %)(((
266 **Bit(bit)**
267 )))|=(% style="width: 253px;background-color:#D9E2F3;color:#0070C0" %)[15:14]|=(% style="width: 155px;background-color:#D9E2F3;color:#0070C0" %)[13:0]
268 |(% style="width:66px" %)(((
269 **Value**
270 )))|(% style="width:250px" %)(((
271 BAT Status
272 00(b): Ultra Low ( BAT <= 2.50v)
273 01(b): Low (2.50v <=BAT <= 2.55v)
274 10(b): OK (2.55v <= BAT <=2.65v)
275 11(b): Good (BAT >= 2.65v)
276 )))|(% style="width:152px" %)Actually BAT voltage
277
278 **(b)stands for binary**
279
280
281 [[image:image-20220522235639-1.png||_mstalt="431392" height="139" width="727"]]
282
283
284 Check the battery voltage for LHT65S.
285
286 * BAT status=(0Xcba4>>14)&0xFF=11 (BIN) ，very good
287
288 * Battery Voltage =0xCBA4&0x3FFF=0x0BA4=2980mV
289
290
291
292 === 2.4.3 Built-in Temperature ===
293
294
295 [[image:image-20220522235639-2.png||_mstalt="431756" height="138" width="722"]]
296
297 * Temperature:  0x0ABB/100=27.47℃
298
299 [[image:image-20220522235639-3.png||_mstalt="432120"]]
300
301 * Temperature:  (0xF5C6-65536)/100=-26.18℃
302
303
304
305 (% style="display:none" %)
306
307 === 2.4.4 Built-in Humidity ===
308
309
310 [[image:image-20220522235639-4.png||_mstalt="432484" height="138" width="722"]]
311
312 * Humidity:    0x025C/10=60.4%
313
314
315
316 (% style="display:none" %)
317
318 === 2.4.5 Ext # ===
319
320
321 Bytes for External Sensor:
322
323 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:425px" %)
324 |=(% style="width: 102px; background-color:#D9E2F3;color:#0070C0" %)**EXT # **Value|=(% style="width: 323px;background-color:#D9E2F3;color:#0070C0" %)External Sensor Type
325 |(% style="width:102px" %)0x01|(% style="width:319px" %)Sensor E3, Temperature Sensor
326 |(% style="width:102px" %)0x09|(% style="width:319px" %)Sensor E3, Temperature Sensor, Datalog Mod
327
328
329
330 === 2.4.6 Ext value ===
331
332 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
333
334
335 [[image:image-20220522235639-5.png||_mstalt="432848"]]
336
337
338 * DS18B20 temp=0x0ADD/100=27.81℃
339
340 The last 2 bytes of data are meaningless
341
342
343
344 [[image:image-20220522235639-6.png||_mstalt="433212"]]
345
346
347 * External temperature= (0xF54F-65536)/100=-27.37℃
348
349 F54F :  (F54F & 8000 == 1) , temp = (F54F - 65536)/100 = 27.37℃
350
351 （0105 & 8000：Judge whether the highest bit is 1, when the highest bit is 1, it is negative）
352
353 The last 2 bytes of data are meaningless
354
355 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
356
357
358 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
359
360
361 (((
362 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:
363 )))
364
365 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
366 |=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
367 **Size(bytes)**
368 )))|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)(((
369 **2**
370 )))|=(% style="width: 120px;background-color:#D9E2F3;color:#0070C0" %)(((
371 **2**
372 )))|=(% style="width: 120px;background-color:#D9E2F3;color:#0070C0" %)(((
373 **2**
374 )))|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
375 **1**
376 )))|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)(((
377 **4**
378 )))
379 |(% style="width:110px" %)(((
380 **Value**
381 )))|(% style="width:71px" %)(((
382 External temperature
383 )))|(% style="width:99px" %)(((
384 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
385 )))|(% style="width:132px" %)(((
386 BAT Status & [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
387 )))|(% style="width:54px" %)(((
388 Status & Ext
389 )))|(% style="width:64px" %)(((
390 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
391 )))
392
393 * **Battery status & Built-in Humidity**
394
395 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:461px" %)
396 |=(% 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]
397 |(% style="width:67px" %)**Value**|(% style="width:256px" %)(((
398 BAT Status
399 00(b): Ultra Low ( BAT <= 2.50v)
400 01(b): Low  (2.50v <=BAT <= 2.55v)
401 10(b): OK   (2.55v <= BAT <=2.65v)
402 11(b): Good   (BAT >= 2.65v)
403 )))|(% style="width:132px" %)(((
404 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
405 )))
406
407 * **Status & Ext Byte**
408
409 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
410 |(% 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]**
411 |(% 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)
412
413 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
414 * (% 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.
415 * (% 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)
416
417
418
419 ==== 2.4.6.3 Ext~=6, ADC Sensor(use with E2 Cable) ====
420
421
422 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
423
424 be used to power the external ADC sensor; user can control the power on time for this
425
426 (% style="color:blue" %)**sensor by setting:**
427
428 **AT+EXT=6,timeout**  (% style="color:red" %)**Time to power this sensor, from 0 ~~ 65535ms**
429
430 **For example:**
431
432 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
433
434
435 Or use **downlink command A2** to set the same.
436
437 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
438
439 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.
440
441 [[image:image-20220628150112-1.png||_mstalt="427414" height="241" width="285"]]
442
443
444 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
445
446 [[image:image-20220628150714-4.png||_mstalt="431054"]]
447
448
449 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.
450
451
452 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
453
454 [[image:image-20220628151005-5.png||_mstalt="429546"]]
455
456
457 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
458
459 [[image:image-20220628151056-6.png||_mstalt="431873"]]
460
461
462 3) Within range
463
464 [[image:image-20220628151143-7.png||_mstalt="431210"]]
465
466
467
468 ==== 2.4.6.4 Ext~=2 TMP117 Sensor((% style="display:none" %) (%%)Since Firmware v1.3)(% style="display:none" %) (%%) ====
469
470 [[image:image-20230717151328-8.png||height="500" width="415"]]
471
472 (% style="display:none" %) (%%)
473
474 (% style="color:blue" %)**Ext=2,Temperature Sensor(TMP117)：**
475
476 [[image:image-20220906102307-7.png||_mstalt="430443"]]
477
478
479 (% style="color:blue" %)**Interrupt Mode and Counting Mode:**(% style="color:blue; display:none" %)** **
480
481 The external cable NE2 can be use for MOD4 and MOD8
482
483
484
485 ==== 2.4.6.5 Ext~=11 SHT31 Sensor ((% style="display:none" %) (%%)Since Firmware v1.4.1) ====
486
487
488
489 [[image:image-20230717151245-7.png||height="482" width="481"]]
490
491 (% style="color:blue" %)**Ext=11,Temperature & Humidity Sensor(SHT31)：**
492
493 [[image:SHT31.png]]
494
495
496
497 ==== 2.4.6.6 Ext~=4 Interrupt Mode(Since Firmware v1.3) ====
498
499
500 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65S will send an uplink when there is a trigger.**
501
502
503 (% style="color:blue" %)**Interrupt Mode can be used to connect to external interrupt sensors such as:**
504
505 (% style="color:#037691" %)**Case 1: Door Sensor.** (%%)3.3v Out for such sensor is just to detect Open/Close.
506
507 In Open State, the power consumption is the same as if there is no probe
508
509 In Close state, the power consumption will be 3uA higher than normal.
510
511 [[image:image-20220906100852-1.png||_mstalt="429156" height="205" width="377"]]
512
513
514 Ext=4,Interrupt Sensor：
515
516 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:504px" %)
517 |(% style="width:101px" %)(((
518 **AT+EXT=4,1**
519 )))|(% style="width:395px" %)(((
520 **Sent uplink packet in both rising and falling interrupt**
521 )))
522 |(% style="width:101px" %)(((
523 **AT+EXT=4,2**
524 )))|(% style="width:395px" %)(((
525 **Sent uplink packet only in falling interrupt**
526 )))
527 |(% style="width:101px" %)(((
528 **AT+EXT=4,3**
529 )))|(% style="width:395px" %)(((
530 **Sent uplink packet only in rising interrupt**
531 )))
532
533 Trigger by falling edge:
534
535 [[image:image-20220906101145-2.png||_mstalt="428324"]]
536
537
538 Trigger by raising edge：
539
540 [[image:image-20220906101145-3.png||_mstalt="428688"]]
541
542
543
544 ==== 2.4.6.7 Ext~=8 Counting Mode(Since Firmware v1.3) ====
545
546
547 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65S will count for every interrupt and uplink periodically.**
548
549
550 (% 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.
551
552 [[image:image-20220906101320-4.png||_mstalt="427336" height="366" width="698"]]
553
554
555 (% 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
556
557 [[image:image-20220906101320-5.png||_mstalt="427700" height="353" width="696"]]
558
559
560 Ext=8, Counting Sensor ( 4 bytes)：
561
562 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:330px" %)
563 |(% style="width:131px" %)(((
564 **AT+EXT=8,0**
565 )))|(% style="width:195px" %)(((
566 **Count at falling interrupt**
567 )))
568 |(% style="width:131px" %)(((
569 **AT+EXT=8,1**
570 )))|(% style="width:195px" %)(((
571 **Count at rising interrupt**
572 )))
573 |(% style="width:131px" %)(((
574 **AT+SETCNT=60**
575 )))|(% style="width:195px" %)(((
576 **Sent current count to 60**
577 )))
578
579 [[image:image-20220906101320-6.png||_mstalt="428064"]]
580
581
582 (% style="color:blue" %)**A2 downlink Command：**
583
584 A2 02:  Same as AT+EXT=2 (AT+EXT= second byte)
585
586 A2 06 01 F4:  Same as AT+EXT=6,500 (AT+EXT= second byte, third and fourth bytes)
587
588 A2 04 02:  Same as AT+EXT=4,2 (AT+EXT= second byte, third byte)
589
590 A2 08 01 00:  Same as AT+EXT=8,0 (AT+EXT= second byte, fourth byte)
591
592 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)
593
594
595 ==== 2.4.6.8 Ext~=10, E2 sensor (TMP117)with Unix Timestamp(Since firmware V1.3.2) ====
596
597
598 (((
599 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:
600 )))
601
602 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
603 |=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
604 **Size(bytes)**
605 )))|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)(((
606 **2**
607 )))|=(% style="width: 120px;background-color:#D9E2F3;color:#0070C0" %)(((
608 **2**
609 )))|=(% style="width: 120px;background-color:#D9E2F3;color:#0070C0" %)(((
610 **2**
611 )))|=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
612 **1**
613 )))|=(% style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)(((
614 **4**
615 )))
616 |(% style="width:110px" %)(((
617 **Value**
618 )))|(% style="width:71px" %)(((
619 External temperature
620 )))|(% style="width:99px" %)(((
621 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
622 )))|(% style="width:132px" %)(((
623 BAT Status & [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
624 )))|(% style="width:54px" %)(((
625 Status & Ext
626 )))|(% style="width:64px" %)(((
627 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
628 )))
629
630 * **Battery status & Built-in Humidity**
631
632 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:461px" %)
633 |=(% 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]
634 |(% style="width:67px" %)**Value**|(% style="width:256px" %)(((
635 BAT Status
636 00(b): Ultra Low ( BAT <= 2.50v)
637 01(b): Low  (2.50v <=BAT <= 2.55v)
638 10(b): OK   (2.55v <= BAT <=2.65v)
639 11(b): Good   (BAT >= 2.65v)
640 )))|(% style="width:132px" %)(((
641 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
642 )))
643
644 * **Status & Ext Byte**
645
646 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
647 |(% 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]**
648 |(% 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)
649
650 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
651 * (% 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.
652 * (% 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)
653
654
655
656 == 2.5 Show data on Datacake ==
657
658
659 (((
660 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:
661 )))
662
663
664 (((
665 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
666 )))
667
668 (((
669 (% 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.
670 )))
671
672
673 (((
674 Add Datacake:
675 )))
676
677
678 [[image:image-20220523000825-7.png||_mstalt="429884" height="262" width="583"]]
679
680
681
682 Select default key as Access Key:
683
684
685 [[image:image-20220523000825-8.png||_mstalt="430248" height="453" width="406"]]
686
687
688 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/]]) , add LHT65 device.
689
690
691 [[image:image-20220523000825-9.png||_mstalt="430612" height="366" width="392"]]
692
693
694 [[image:image-20220523000825-10.png||_mstalt="450619" height="413" width="728"]]
695
696
697 == 2.6 Datalog Feature ==
698
699
700 (((
701 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.
702 )))
703
704
705 === 2.6.1 Ways to get datalog via LoRaWAN ===
706
707
708 There are two methods:
709
710 (% style="color:blue" %)**Method 1:** (%%)IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specified time range.
711
712
713 (% 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.
714
715
716 (% style="color:red" %)**Note for method 2:**
717
718 * a) LHT65S will do an ACK check for data records sending to make sure every data arrive server.
719 * 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.
720
721 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
722
723
724 [[image:image-20220703111700-2.png||_mstalt="426244" height="381" width="1119"]]
725
726
727 === 2.6.2 Unix TimeStamp ===
728
729
730 LHT65S uses Unix TimeStamp format based on
731
732
733 [[image:image-20220523001219-11.png||_mstalt="450450" height="97" width="627"]]
734
735
736
737 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
738
739 Below is the converter example
740
741 [[image:image-20220523001219-12.png||_mstalt="450827" height="298" width="720"]]
742
743
744 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
745
746
747 === 2.6.3 Set Device Time ===
748
749
750 (((
751 (% style="color:blue" %)**There are two ways to set device's time:**
752 )))
753
754 (((
755 **1.  Through LoRaWAN MAC Command (Default settings)**
756 )))
757
758 (((
759 User need to set SYNCMOD=1 to enable sync time via MAC command.
760 )))
761
762 (((
763 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).
764 )))
765
766 (((
767 (% 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.**
768 )))
769
770
771 (((
772 **2. Manually Set Time**
773 )))
774
775 (((
776 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
777 )))
778
779
780 === 2.6.4 Poll sensor value ===
781
782
783 User can poll sensor value based on timestamps from the server. Below is the downlink command.
784
785 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:428px" %)
786 |(% 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**
787 |(% style="width:58px" %)31|(% style="width:128px" %)Timestamp start|(% style="width:123px" %)Timestamp end|(% style="width:116px" %)Uplink Interval
788
789 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.
790
791 For example, downlink command (% _mstmutation="1" %)**31 5FC5F350 5FC6 0160 05**(%%)
792
793 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00's data
794
795 Uplink Internal =5s, means LHT65S will send one packet every 5s. range 5~~255s.
796
797
798 === 2.6.5 Datalog Uplink payload ===
799
800
801 The Datalog poll reply uplink will use below payload format.
802
803 **Retrieval data payload:**
804
805 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
806 |=(% style="width: 60px;background-color:#D9E2F3;color:#0070C0" %)(((
807 **Size(bytes)**
808 )))|=(% 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**
809 |(% 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"]]
810
811 **Poll message flag & Ext:**
812
813 [[image:image-20221006192726-1.png||_mstalt="430508" height="112" width="754"]]
814
815 (% 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)
816
817 (% style="color:blue" %)**Poll Message Flag**(%%): 1: This message is a poll message reply.
818
819 * Poll Message Flag is set to 1.
820
821 * Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
822
823 For example, in US915 band, the max payload for different DR is:
824
825 (% style="color:blue" %)**a) DR0:** (%%)max is 11 bytes so one entry of data
826
827 (% style="color:blue" %)**b) DR1:**(%%) max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
828
829 (% style="color:blue" %)**c) DR2:**(%%) total payload includes 11 entries of data
830
831 (% style="color:blue" %)**d) DR3: **(%%)total payload includes 22 entries of data.
832
833 If devise doesn't have any data in the polling time. Device will uplink 11 bytes of 0   
834
835
836 **Example:**
837
838 If LHT65S has below data inside Flash:
839
840 [[image:image-20230426171833-4.png]]
841
842
843 If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705
844
845 Where : Start time: 60065F97 = time 21/1/19 04:27:03
846
847 Stop time: 60066DA7= time 21/1/19 05:27:03
848
849
850 **LHT65S will uplink this payload.**
851
852 [[image:image-20220523001219-13.png||_mstalt="451204" height="421" style="text-align:left" width="727"]]
853
854
855 __**7FFF089801464160065F97**__ **__7FFF__ __088E__ __014B__ __41__ __60066009__** 7FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
856
857 Where the first 11 bytes is for the first entry:
858
859 7FFF089801464160065F97
860
861 Ext sensor data=0x7FFF/100=327.67
862
863 Temp=0x088E/100=22.00
864
865 Hum=0x014B/10=32.6
866
867 poll message flag & Ext=0x41,means reply data,Ext=1
868
869 Unix time is 0x60066009=1611030423s=21/1/19 04:27:03
870
871
872 == 2.7 Alarm Mode & Feature "Multi sampling, one uplink" ==
873
874
875 (((
876 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.
877 )))
878
879 (((
880 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
881
882
883 === 2.7.1 ALARM MODE ( Since v1.3.1 firmware) ===
884
885
886 **Internal GXHT30 temperature alarm(Acquisition time: fixed at one minute)**
887
888 (((
889 (% class="box infomessage" %)
890 (((
891 **AT+WMOD=3**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
892
893 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
894
895 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
896
897 (% _mstmutation="1" %)**AT+ARTEMP=? **(%%):  Gets the alarm range of the internal temperature sensor(% style="display:none" %)
898
899 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
900
901 **AT+LEDALARM=1** :       Enable LED visual Alarm.
902 )))
903 )))
904
905 (% style="color:#4f81bd" %)**Downlink Command:**
906
907 AT+WMOD=1:  A501  , AT+WMOD=0 :  A600
908
909 AT+CITEMP=1 : A60001
910
911 AT+ARTEMP=1,60  :  A70001003C
912
913 AT+ARTEMP=-16,60 :  A7FFF0003C
914
915 AT+LEDALARM=1  :  3601
916
917
918 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
919
920 Total bytes: 8 bytes
921
922 **Example: **AA0100010001003C
923
924 WMOD=01
925
926 CITEMP=0001
927
928 TEMPlow=0001
929
930 TEMPhigh=003C
931
932
933 **DS18B20 and TMP117 Threshold Alarm**
934
935 **~ AT+WMOD=1,60,-10,20**
936
937 (% style="color:#4f81bd" %)**Downlink Command:**
938
939 **Example: **A5013CFC180014
940
941 MOD=01
942
943 CITEMP=3C(S)
944
945 TEMPlow=FC18
946
947 TEMPhigh=0014
948
949
950 **Fluctuation alarm for DS18B20 and TMP117(Acquisition time: minimum 1s)**
951
952 **AT+WMOD=2,60,5** 
953
954 (% style="color:#4f81bd" %)**Downlink Command:**
955
956 **Example: **A5023C05
957
958 MOD=02
959
960 CITEMP=3C(S)
961
962 temperature fluctuation=05
963
964
965 **Sampling multiple times and uplink together**
966
967 **AT+WMOD=3,1,60,20,-16,32,1**   
968
969 Explain:
970
971 * (% style="color:#037691" %)**parameter1: **(%%)Set Working Mode to **Mode 3**
972 * (% style="color:#037691" %)**parameter2:**(%%) Set the temperature sampling mode to** 1**(1:DS18B20;2:TMP117;3:** **Internal GXHT30).
973 * (% style="color:#037691" %)**parameter3: **(%%)Sampling Interval is **60**s.
974 * (% 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)
975 * (% style="color:#037691" %)**parameter5 & parameter6: **(%%)Temperature alarm range is **-16** to **32**°C,
976 * (% 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.
977
978 (% style="color:#4f81bd" %)**Downlink Command:**
979
980 **Example: **A50301003C14FFF0002001
981
982 MOD=03
983
984 TEMP=DS18B20
985
986 CITEMP=003C(S)
987
988 Total number of acquisitions=14
989
990 TEMPlow=FFF0
991
992 TEMPhigh=0020
993
994 ARTEMP=01
995
996
997 **Uplink payload( Fport=3)**
998
999 **Example: CBEA**01**0992**//0A41//**09C4**
1000
1001 BatV=CBEA
1002
1003 TEMP=DS18B20
1004
1005 Temp1=0992  ~/~/ 24.50℃
1006
1007 Temp2=0A41  ~/~/ 26.25℃
1008
1009 Temp3=09C4  ~/~/ 25.00℃
1010
1011 (% style="color:red" %)**Note: This uplink will automatically select the appropriate DR according to the data length**
1012
1013 (% style="color:red" %)** In this mode, the temperature resolution of ds18b20 is 0.25℃ to save power consumption**
1014 )))
1015
1016
1017 === 2.7.2 ALARM MODE ( Before v1.3.1 firmware) ===
1018
1019
1020 (% class="box infomessage" %)
1021 (((
1022 (((
1023 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
1024 )))
1025
1026 (((
1027 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1028 )))
1029
1030 (((
1031 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1032 )))
1033
1034 (((
1035 (% _mstmutation="1" %)**AT+ARTEMP=? **(%%):  Gets the alarm range of the internal temperature sensor(% style="display:none" %)
1036 )))
1037
1038 (((
1039 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1040 )))
1041 )))
1042
1043 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1044
1045 Total bytes: 8 bytes
1046
1047 **Example:**AA0100010001003C
1048
1049 WMOD=01
1050
1051 CITEMP=0001
1052
1053 TEMPlow=0001
1054
1055 TEMPhigh=003C
1056
1057
1058 == 2.8 LED Indicator ==
1059
1060
1061 The LHT65 has a triple color LED which for easy showing different stage .
1062
1063 While user press ACT button, the LED will work as per LED status with ACT button.
1064
1065 In a normal working state:
1066
1067 * For each uplink, the BLUE LED or RED LED will blink once.
1068 BLUE LED when external sensor is connected.
1069 * RED LED when external sensor is not connected
1070 * For each success downlink, the PURPLE LED will blink once
1071
1072
1073
1074 = 3. Sensors and Accessories =
1075
1076 == 3.1 E2 Extension Cable ==
1077
1078
1079 [[image:image-20220619092222-1.png||_mstalt="429533" height="182" width="188"]][[image:image-20220619092313-2.png||_mstalt="430222" height="182" width="173"]]
1080
1081
1082 **1m long breakout cable for LHT65S. Features:**
1083
1084 * (((
1085 Use for AT Command, works for both LHT52/LHT65S
1086 )))
1087 * (((
1088 Update firmware for LHT65S, works for both LHT52/LHT65S
1089 )))
1090 * (((
1091 Supports ADC mode to monitor external ADC
1092 )))
1093 * (((
1094 Supports Interrupt mode
1095 )))
1096 * (((
1097 Exposed All pins from the LHT65S Type-C connector.
1098
1099
1100
1101 )))
1102
1103 [[image:image-20230808115712-5.png||height="503" width="715"]]
1104
1105
1106 == 3.2 E3 Temperature Probe ==
1107
1108
1109 [[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"]]
1110
1111
1112 Temperature sensor with 2 meters cable long
1113
1114 * Resolution: 0.0625 °C
1115 * ±0.5°C accuracy from -10°C to +85°C
1116 * ±2°C accuracy from -55°C to +125°C
1117 * Operating Range: -40 ~~ 125 °C
1118 * Working voltage 2.35v ~~ 5v
1119
1120
1121
1122 == 3.3 E31F Temperature Probe ==
1123
1124
1125 [[image:65N-E31F-1.jpg||height="169" width="170"]] [[image:image-20230717151424-9.png||height="221" width="204"]](% style="display:none" %)
1126
1127
1128 Temperature sensor with 1 meters cable long
1129
1130
1131 **Built-in Temperature Sensor:**
1132
1133 * Resolution: 0.01 °C
1134 * Accuracy Tolerance : Typ ±0.3 °C
1135 * Long Term Drift: < 0.02 °C/yr
1136 * Operating Range: -40 ~~ 80 °C
1137
1138 **Built-in Humidity Sensor:**
1139
1140 * Resolution: 0.04 % RH
1141 * Accuracy Tolerance : Typ ±3 % RH
1142 * Long Term Drift: < 0.02 °C/yr
1143 * Operating Range: 0 ~~ 96 % RH
1144
1145 **External Temperature Sensor :**
1146
1147 * Resolution: 0.01 °C
1148 * Accuracy Tolerance : Typical ±0.3 °C
1149 * Long Term Drift: < 0.02 °C/yr
1150 * Operating Range: -40 ~~ 125 °C
1151
1152 **External Humidity Sensor :**
1153
1154 * Resolution: 0.04 % RH
1155 * Accuracy Tolerance : Typ ±3 % RH
1156 * Long Term Drift: < 0.02 °C/yr
1157 * Operating Range: 0 ~~ 96 % RH
1158
1159
1160
1161 = 4. Configure LHT65S via AT command or LoRaWAN downlink =
1162
1163
1164 (((
1165 Use can configure LHT65S via AT Command or LoRaWAN Downlink.
1166 )))
1167
1168 * (((
1169 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1170 )))
1171
1172 * (((
1173 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1174 )))
1175
1176 (((
1177 There are two kinds of commands to configure LHT65S, they are:
1178 )))
1179
1180 * (((
1181 (% style="color:#4f81bd" %)**General Commands**.
1182 )))
1183
1184 (((
1185 These commands are to configure:
1186 )))
1187
1188 1. (((
1189 General system settings like: uplink interval.
1190 )))
1191 1. (((
1192 LoRaWAN protocol & radio-related commands.
1193 )))
1194
1195 (((
1196 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]]
1197 )))
1198
1199 * (((
1200 (% style="color:#4f81bd" %)**Commands special design for LHT65S**
1201 )))
1202
1203 (((
1204 These commands are only valid for LHT65S, as below:
1205 )))
1206
1207
1208 == 4.1 Set Transmit Interval Time ==
1209
1210
1211 Feature: Change LoRaWAN End Node Transmit Interval.
1212
1213
1214 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1215
1216 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:501px" %)
1217 |(% 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**
1218 |(% style="width:155px" %)AT+TDC=?|(% style="width:162px" %)Show current transmit Interval|(% style="width:177px" %)30000 OK the interval is 30000ms = 30s
1219 |(% style="width:155px" %)AT+TDC=60000|(% style="width:162px" %)Set Transmit Interval|(% style="width:177px" %)OK Set transmit interval to 60000ms = 60 seconds
1220
1221 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1222
1223 Format: Command Code (0x01) followed by 3 bytes time value.
1224
1225 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
1226
1227 * **Example 1**: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
1228
1229 * **Example 2**: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
1230
1231
1232
1233 == 4.2 Set External Sensor Mode ==
1234
1235
1236 Feature: Change External Sensor Mode.
1237
1238 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1239
1240 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:468px" %)
1241 |(% 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**
1242 |(% style="width:155px" %)AT+EXT=?|(% style="width:151px" %)Get current external sensor mode|(% style="width:158px" %)1 OK External Sensor mode =1
1243 |(% style="width:155px" %)AT+EXT=1|(% colspan="2" rowspan="1" style="width:309px" %)Set external sensor mode to 1
1244 |(% style="width:155px" %)AT+EXT=9|(% colspan="2" rowspan="1" style="width:309px" %)Set to external DS18B20 with timestamp
1245
1246 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1247
1248 Total bytes: 2 ~~ 5 bytes
1249
1250 **Example:**
1251
1252 * 0xA201: Set external sensor type to E1
1253
1254 * 0xA209: Same as AT+EXT=9
1255
1256 * 0xA20702003c: Same as AT+SETCNT=60
1257
1258
1259
1260 == 4.3 Enable/Disable uplink Temperature probe ID ==
1261
1262
1263 (((
1264 Feature: If PID is enabled, device will send the temperature probe ID on:
1265 )))
1266
1267 * (((
1268 First Packet after OTAA Join
1269 )))
1270 * (((
1271 Every 24 hours since the first packet.
1272 )))
1273
1274 (((
1275 PID is default set to disable (0)
1276
1277
1278 )))
1279
1280 (% style="color:#4f81bd" %)**AT Command:**
1281
1282 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:381px" %)
1283 |(% 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**
1284 |(% style="width:155px" %)AT+PID=1|(% style="width:136px" %)Enable PID uplink|(% style="width:86px" %)OK
1285
1286 (% style="color:#4f81bd" %)**Downlink Command:**
1287
1288 * **0xA800**  **~-~->** AT+PID=0
1289 * **0xA801**     **~-~->** AT+PID=1
1290
1291
1292
1293 == 4.4 Set Password ==
1294
1295
1296 Feature: Set device password, max 9 digits
1297
1298 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1299
1300 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:372px" %)
1301 |(% 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**
1302 |(% style="width:155px" %)AT+PWORD=?|(% style="width:124px" %)Show password|(% style="width:86px" %)(((
1303 123456
1304
1305 OK
1306 )))
1307 |(% style="width:155px" %)AT+PWORD=999999|(% style="width:124px" %)Set password|(% style="width:86px" %)OK
1308
1309 (% style="color:#4f81bd" %)**Downlink Command:**
1310
1311 No downlink command for this feature.
1312
1313
1314 == 4.5 Quit AT Command ==
1315
1316
1317 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1318
1319 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1320
1321 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:433px" %)
1322 |(% 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**
1323 |(% style="width:155px" %)AT+DISAT|(% style="width:191px" %)Quit AT Commands mode|(% style="width:86px" %)OK
1324
1325 (% style="color:#4f81bd" %)**Downlink Command:**
1326
1327 No downlink command for this feature.
1328
1329
1330 == 4.6 Set to sleep mode ==
1331
1332
1333 Feature: Set device to sleep mode
1334
1335 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1336 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1337
1338 (% style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1339
1340 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:513px" %)
1341 |(% 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**
1342 |(% style="width:155px" %)AT+SLEEP|(% style="width:139px" %)Set to sleep mode|(% style="width:213px" %)(((
1343 Clear all stored sensor data…
1344
1345 OK
1346 )))
1347
1348 (% style="color:#4f81bd" %)**Downlink Command:**
1349
1350 * There is no downlink command to set to Sleep mode.
1351
1352
1353
1354 == 4.7 Set system time ==
1355
1356
1357 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1358
1359 (% style="color:#4f81bd" %)**AT Command:**
1360
1361 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:506px" %)
1362 |(% style="background-color:#d9e2f3; color:#0070c0; width:188px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:318px" %)**Function**
1363 |(% style="width:154px" %)AT+TIMESTAMP=1611104352|(% style="width:285px" %)(((
1364 OK
1365
1366 Set System time to 2021-01-20 00:59:12
1367 )))
1368
1369 (% style="color:#4f81bd" %)**Downlink Command:**
1370
1371 0x306007806000  ~/~/  Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1372
1373
1374 == 4.8 Set Time Sync Mode ==
1375
1376
1377 (((
1378 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1379 )))
1380
1381 (((
1382 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.
1383 )))
1384
1385 (% style="color:#4f81bd" %)**AT Command:**
1386
1387 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:475px" %)
1388 |(% style="background-color:#d9e2f3; color:#0070c0; width:156px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:315px" %)**Function**
1389 |(% style="width:156px" %)AT+SYNCMOD=1|(% style="width:315px" %)Enable Sync system time via LoRaWAN MAC Command (DeviceTimeReq)
1390
1391 (% style="color:#4f81bd" %)**Downlink Command:**
1392
1393 0x28 01  ~/~/  Same As AT+SYNCMOD=1
1394 0x28 00  ~/~/  Same As AT+SYNCMOD=0
1395
1396
1397 == 4.9 Set Time Sync Interval ==
1398
1399
1400 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1401
1402 (% style="color:#4f81bd" %)**AT Command:**
1403
1404 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:472px" %)
1405 |(% style="background-color:#d9e2f3; color:#0070c0; width:158px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:314px" %)**Function**
1406 |(% style="width:156px" %)AT+SYNCTDC=0x0A |(% style="width:311px" %)Set SYNCTDC to 10 (0x0A), so the sync time is 10 days.
1407
1408 (% style="color:#4f81bd" %)**Downlink Command:**
1409
1410 **0x29 0A**  ~/~/ Same as AT+SYNCTDC=0x0A
1411
1412
1413 == 4.10 Print data entries base on page. ==
1414
1415
1416 Feature: Print the sector data from start page to stop page (max is 416 pages).
1417
1418 (% style="color:#4f81bd" %)**AT Command: AT+PDTA**
1419
1420 [[image:image-20230426164330-2.png]]
1421
1422 (% style="color:#4f81bd" %)**Downlink Command:**
1423
1424 No downlink commands for feature
1425
1426
1427 == 4.11 Print last few data entries. ==
1428
1429
1430 Feature: Print the last few data entries
1431
1432 (% style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1433
1434 [[image:image-20230426164932-3.png]]
1435
1436 (% style="color:#4f81bd" %)**Downlink Command:**
1437
1438 No downlink commands for feature
1439
1440
1441 == 4.12 Clear Flash Record ==
1442
1443
1444 Feature: Clear flash storage for data log feature.
1445
1446 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1447
1448 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:503px" %)
1449 |(% 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**
1450 |(% style="width:155px" %)AT+CLRDTA |(% style="width:134px" %)Clear date record|(% style="width:209px" %)(((
1451 Clear all stored sensor data…
1452
1453 OK
1454 )))
1455
1456 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1457
1458 * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1459
1460
1461
1462 == 4.13 Auto Send None-ACK messages ==
1463
1464
1465 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.
1466
1467 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1468
1469 The default factory setting is 0
1470
1471 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:367px" %)
1472 |=(% 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**
1473 |(% style="width:158px" %)AT+PNACKMD=1|(% style="width:118px" %)Poll None-ACK message|(% style="width:87px" %)OK
1474
1475 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1476
1477 * Example: 0x3401  ~/~/  Same as AT+PNACKMD=1
1478
1479
1480
1481 == 4.14 Modified WMOD command for external sensor TMP117 or DS18B20 temperature alarm(Since firmware 1.3.0) ==
1482
1483
1484 Feature: Set internal and external temperature sensor alarms.
1485
1486 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
1487 |=(% 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**
1488 |(% style="width:268px" %)AT+WMOD=parameter1,parameter2,parameter3,parameter4|(% style="width:255px" %)Set internal and external temperature sensor alarms|(% style="width:181px" %)OK
1489
1490 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
1491
1492 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
1493
1494 0): Cancel
1495
1496 1): Threshold alarm
1497
1498 2): Fluctuation alarm
1499
1500
1501 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
1502
1503 (% 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.**
1504
1505
1506 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
1507
1508 1):  If Alarm Mode is set to 1: Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
1509
1510 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
1511
1512
1513 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.
1514
1515 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
1516
1517 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
1518
1519
1520 (% style="color:#4f81bd" %)**Downlink Command: 0xA5**
1521
1522 0xA5 00 ~-~- AT+WMOD=0.
1523
1524 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 )
1525
1526 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))
1527
1528 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
1529
1530 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.
1531
1532
1533 = 5. Battery & How to replace =
1534
1535 == 5.1 Battery Type ==
1536
1537
1538 (((
1539 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.
1540 )))
1541
1542 (((
1543 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1544
1545
1546 [[image:image-20220515075034-1.png||_mstalt="428961" height="208" width="644"]]
1547 )))
1548
1549 The minimum Working Voltage for the LHT65S is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1550
1551
1552 == 5.2 Replace Battery ==
1553
1554
1555 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.
1556
1557 [[image:image-20220515075440-2.png||_mstalt="429546" height="338" width="272"]][[image:image-20220515075625-3.png||_mstalt="431574" height="193" width="257"]]
1558
1559
1560 == 5.3 Battery Life Analyze ==
1561
1562
1563 (((
1564 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:
1565 [[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]]
1566 )))
1567
1568
1569 (((
1570 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]]
1571 )))
1572
1573
1574 = 6. FAQ =
1575
1576 == 6.1 How to use AT Command? ==
1577
1578
1579 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.
1580
1581 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1582
1583
1584 **Connection:**
1585
1586 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1587 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1588 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1589
1590 (((
1591 (% _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)**
1592
1593 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.
1594 )))
1595
1596
1597 Input password and ATZ to activate LHT65S,As shown below:
1598
1599 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1600
1601
1602 AT Command List is as below:
1603
1604 AT+<CMD>? :  Help on <CMD>
1605
1606 AT+<CMD> :  Run <CMD>
1607
1608 AT+<CMD>=<value> :  Set the value
1609
1610 AT+<CMD>=? :  Get the value
1611
1612 AT+DEBUG:  Set more info output
1613
1614 ATZ:  Trig a reset of the MCU
1615
1616 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1617
1618 AT+DEUI:  Get or Set the Device EUI
1619
1620 AT+DADDR:  Get or Set the Device Address
1621
1622 AT+APPKEY:  Get or Set the Application Key
1623
1624 AT+NWKSKEY:  Get or Set the Network Session Key
1625
1626 AT+APPSKEY:  Get or Set the Application Session Key
1627
1628 AT+APPEUI:  Get or Set the Application EUI
1629
1630 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1631
1632 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1633
1634 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1635
1636 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1637
1638 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1639
1640 AT+RX2FQ:  Get or Set the Rx2 window frequency
1641
1642 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1643
1644 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1645
1646 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1647
1648 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1649
1650 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1651
1652 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1653
1654 AT+NWKID:  Get or Set the Network ID
1655
1656 AT+FCU:  Get or Set the Frame Counter Uplink
1657
1658 AT+FCD:  Get or Set the Frame Counter Downlink
1659
1660 AT+CLASS:  Get or Set the Device Class
1661
1662 AT+JOIN:  Join network
1663
1664 AT+NJS:  Get the join status
1665
1666 AT+SENDB:  Send hexadecimal data along with the application port
1667
1668 AT+SEND:  Send text data along with the application port
1669
1670 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1671
1672 AT+RECV:  Print last received data in raw format
1673
1674 AT+VER:  Get current image version and Frequency Band
1675
1676 AT+CFM:  Get or Set the confirmation mode (0-1)
1677
1678 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1679
1680 AT+SNR:  Get the SNR of the last received packet
1681
1682 AT+RSSI:  Get the RSSI of the last received packet
1683
1684 AT+TDC:  Get or set the application data transmission interval in ms
1685
1686 AT+PORT:  Get or set the application port
1687
1688 AT+DISAT:  Disable AT commands
1689
1690 AT+PWORD: Set password, max 9 digits
1691
1692 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1693
1694 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1695
1696 AT+PDTA:  Print the sector data from start page to stop page
1697
1698 AT+PLDTA:  Print the last few sets of data
1699
1700 AT+CLRDTA:  Clear the storage, record position back to 1st
1701
1702 AT+SLEEP:  Set sleep mode
1703
1704 AT+EXT:  Get or Set external sensor model
1705
1706 AT+BAT:  Get the current battery voltage in mV
1707
1708 AT+CFG:  Print all configurations
1709
1710 AT+WMOD:  Get or Set Work Mode
1711
1712 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1713
1714 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1715
1716 AT+SETCNT:  Set the count at present
1717
1718 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1719
1720 AT+RPL:  Get or set response level
1721
1722 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1723
1724 AT+LEAPSEC:  Get or Set Leap Second
1725
1726 AT+SYNCMOD:  Get or Set time synchronization method
1727
1728 AT+SYNCTDC:  Get or set time synchronization interval in day
1729
1730 AT+PID:  Get or set the PID
1731
1732
1733 == 6.2 Where to use AT commands and Downlink commands ==
1734
1735
1736 **AT commands: **
1737
1738 [[image:image-20220620153708-1.png||_mstalt="429806" height="603" width="723"]]
1739
1740
1741 **Downlink commands:**
1742
1743
1744 (% style="color:blue" %)**TTN:**
1745
1746 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1747
1748
1749
1750 (% style="color:blue" %)**Helium: **
1751
1752 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1753
1754
1755
1756 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1757
1758
1759 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1760
1761
1762 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1763
1764
1765
1766 (% style="color:blue" %)**Aws:**
1767
1768 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1769
1770
1771 == 6.3 How to change the uplink interval? ==
1772
1773
1774 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);"]]
1775
1776
1777 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1778
1779
1780 [[image:image-20220615153355-1.png||_mstalt="430222"]]
1781
1782 [[image:1655802313617-381.png||_mstalt="293917"]]
1783
1784
1785 (((
1786 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.
1787 )))
1788
1789
1790 Input password and ATZ to activate LHT65S, As shown below:
1791
1792 [[image:image-20220615154519-3.png||_mstalt="431925" height="672" width="807"]]
1793
1794
1795 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1796
1797
1798 [[image:image-20220615153355-1.png||_mstalt="430222"]]
1799
1800
1801 (% 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.
1802
1803 [[image:image-20220615170542-5.png||_mstalt="430638"]]
1804
1805
1806 (% _mstmutation="1" style="color:blue" %)**Step2**(%%): wiring method.(% style="display:none" %)
1807
1808 First connect the four lines;(% style="display:none" %)
1809
1810 [[image:image-20220621170938-1.png||_mstalt="431340" height="413" width="419"]],(% style="display:none" %)
1811
1812
1813 Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1814
1815 [[image:image-20220621170938-2.png||_mstalt="431704"]]
1816
1817
1818 (% style="color:blue" %)**Step3: **(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1819
1820 [[image:image-20220615171334-6.png||_mstalt="431028"]]
1821
1822
1823 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1824
1825
1826 When this interface appears, it indicates that the download has been completed.
1827
1828 [[image:image-20220620160723-8.png||_mstalt="430703"]]
1829
1830
1831 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1832
1833
1834 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1835
1836
1837 [[image:image-20220623110706-1.png||_mstalt="427869"]]
1838
1839
1840 **UART Port of LHT65S:**
1841
1842 * (% class="mark" %)**PB0: RXD**
1843 * (% class="mark" %)**PB1: TXD**
1844 * (% class="mark" %)**GND**
1845
1846 [[image:image-20220623112117-4.png||_mstalt="428350" height="459" width="343"]]
1847
1848
1849 (((
1850 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.
1851 )))
1852
1853
1854 Input password and ATZ to activate LHT65S,As shown below:
1855
1856 [[image:image-20220615154519-3.png||_mstalt="431925" height="672" width="807"]]
1857
1858
1859 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1860
1861
1862 [[image:image-20220623110706-1.png||_mstalt="427869"]]
1863
1864
1865 (% 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.
1866
1867 [[image:image-20220615170542-5.png||_mstalt="430638"]]
1868
1869
1870 (% _mstmutation="1" style="color:blue" %)**Step2**(%%): wiring method.(% style="display:none" %)
1871
1872 First connect the four lines;
1873
1874 [[image:image-20220623113959-5.png||_mstalt="433485" height="528" width="397"]]
1875
1876 Connect A8 and GND with Dupont wire for a while and then separate, enter reset mode
1877
1878
1879 (% style="color:blue" %)**Step3: **(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1880
1881 [[image:image-20220615171334-6.png||_mstalt="431028"]]
1882
1883
1884 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1885
1886
1887 When this interface appears, it indicates that the download has been completed.
1888
1889 [[image:image-20220620160723-8.png||_mstalt="430703"]]
1890
1891
1892 Finally,Disconnect 3.3v, Connect A8 and GND with Dupont wire for a while and then separate, exit reset mode
1893
1894
1895 == 6.8 Why can't I see the datalog information ==
1896
1897
1898 ~1. The time is not aligned, and the correct query command is not used.
1899
1900 2. Decoder error, did not parse the datalog data, the data was filtered.
1901
1902
1903 = 7. Order Info =
1904
1905
1906 Part Number: (% style="color:#4f81bd" %)** LHT65S-XX-YY**
1907
1908 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1909
1910 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1911 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1912 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1913 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1914 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1915 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**US915**(%%): LoRaWAN US915 band
1916 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1917 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1918
1919 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1920
1921 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1922
1923
1924
1925 = 8. Packing Info =
1926
1927
1928 **Package Includes**:
1929
1930 * LHT65S Temperature & Humidity Sensor x 1
1931 * Optional external sensor
1932
1933
1934
1935 = 9. Reference material =
1936
1937
1938 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0]]
1939
1940
1941
1942 = 10. FCC Warning =
1943
1944
1945 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1946
1947 (1) This device may not cause harmful interference;
1948
1949 (2) this device must accept any interference received, including interference that may cause undesired operation.

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