Version 6.1 by Edwin Chen on 2023/04/09 00:33
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12 **Table of Contents：**
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14 {{toc/}}
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23
24 = 1. Introduction =
25
26 == 1.1 What is LHT65N-PIR Temperature,Humidity & PIR Sensor ==
27
28 The Dragino (% style="color:blue" %)**LHT65N-PIR Temperature, Humidity & PIR sensor**(%%) is a Long Range LoRaWAN Sensor.It includes a (% style="color:blue" %)**built-in Temperature & Humidity sensor**(%%) and has an (% style="color:blue" %)**external PIR Probe**(%%)**.** LHT65N-PIR can detect environment Temperature & Humdity, it also detects (% style="color:blue" %)**People Activity**(%%) via PIR probe and them send these info to LoRaWAN IoT Server.
29
30 The LHT65N-PIR 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.
31
32 LHT65N-PIR has a (% style="color:blue" %)**built-in 2400mAh non-chargeable battery**(%%) which can be used for more than 5 years*.
33
34 LHT65N-PIR supports (% style="color:blue" %)**wireless configure & OTA update**(%%) which make user easy to use.
35
36 LHT65N-PIR is fully compatible with (% style="color:blue" %)**LoRaWAN v1.0.3 Class A protocol**(%%), it can work with a standard LoRaWAN gateway.
37
38
39 **~*~***The actual battery life depends on how often to send data, please see battery analyzer chapter.
40
41
42 == 1.2 Features ==
43
44 * LoRaWAN v1.0.3 Class A protocol
45 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
46 * AT Commands to change parameters
47 * Remote configure parameters via LoRaWAN Downlink
48 * Support wireless OTA update firmware
49 * Firmware upgradeable via program port
50 * Built-in 2400mAh battery for up to 5 years of use.
51 * Built-in Temperature & Humidity sensor
52 * External PIR Sensor
53 * Tri-color LED to indicate working status(% style="display:none" %)
54
55 == 1.3 Specification ==
56
57
58 (% style="color:#037691" %)**Built-in Temperature Sensor:**
59
60 * Resolution: 0.01 °C
61 * Accuracy Tolerance : Typ ±0.3 °C
62 * Long Term Drift: < 0.02 °C/yr
63 * Operating Range: -40 ~~ 85 °C
64
65 (% style="color:#037691" %)**Built-in Humidity Sensor:**
66
67 * Resolution: 0.04 %RH
68 * Accuracy Tolerance : Typ ±3 %RH
69 * Long Term Drift: < 0.02 °C/yr
70 * Operating Range: 0 ~~ 96 %RH
71
72 (% class="mark" style="color:#037691" %)**External PIR Sensor:**
73
74 * (% class="mark" %)Base on BH1750 Illumination Sensor
75 * (% class="mark" %)Cable Length : 50cm
76 * (% class="mark" %)Resolution: 1 lx
77 * (% class="mark" %)Range: 0-65535 lx
78 * (% class="mark" %)Operating Range: -40 °C ~~ 85 °C
79
80 = 2. Connect LHT65N-PIR to IoT Server =
81
82 == 2.1 How does LHT65N-PIR work? ==
83
84 LHT65N-PIR is configured as LoRaWAN OTAA Class A sensor by default. Each LHT65N-PIR is shipped with a worldwide unique set of OTAA keys. To use LHT65N-PIR in a LoRaWAN network, first, we need to put the OTAA keys in LoRaWAN Network Server and then activate LHT65N-PIR.
85
86 If LHT65N-PIR is within the coverage of this LoRaWAN network. LHT65N-PIR can join the LoRaWAN network automatically. After successfully joining, LHT65N-PIR will start to measure environment temperature, humidity & people activity, and start to transmit sensor data to the LoRaWAN server. The default period for each uplink is 20 minutes.
87
88
89 == 2.2 How to Activate LHT65N-PIR? ==
90
91 The LHT65N-PIR has two working modes:
92
93 * (% style="color:blue" %)**Deep Sleep Mode**(%%): LHT65N-PIR doesn't have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.
94
95 * (% style="color:blue" %)**Working Mode**(%%):  In this mode, LHT65N-PIR works as LoRaWAN Sensor mode to Join LoRaWAN network and send out the sensor data to the server. Between each sampling/tx/rx periodically, LHT65N-PIR will be in STOP mode (IDLE mode), in STOP mode, the PIR sensor is still working to detect people activity in low power consumption.
96
97 The LHT65N-PIR is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
98
99
100 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N-E5%20LoRaWAN%20Temperature_Humidity%20%26%20Illuminance%20Sensor%20User%20Manual/WebHome/image-20220515123819-1.png?width=317&height=379&rev=1.1||alt="image-20220515123819-1.png" height="379" width="317"]]
101
102 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N-E5%20LoRaWAN%20Temperature_Humidity%20%26%20Illuminance%20Sensor%20User%20Manual/WebHome/image-20220525110604-2.png?rev=1.1||alt="image-20220525110604-2.png"]]
103
104
105 == 2.3 Example to join LoRaWAN network ==
106
107
108 (% class="wikigeneratedid" %)
109 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.
110
111
112 (% class="wikigeneratedid" %)
113 [[image:image-20221224101636-1.png||height="435" width="715"]]
114
115
116 Assume the LPS8v2 is already set to connect to [[TTN V3 network>>url:https://eu1.cloud.thethings.network||_mstvisible="2"]], So it provides network coverage for LHT65N-PIR. Next we need to add the LHT65N-PIR device in TTN V3:
117
118
119 === 2.3.1 Step 1: Create Device n TTN ===
120
121
122 Create a device in TTN V3 with the OTAA keys from LHT65N-PIR.
123
124 Each LHT65N-PIR is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
125
126 [[image:image-20220617150003-1.jpeg||_mstalt="5426434"]]
127
128 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
129
130 Add APP EUI in the application.
131
132
133 [[image:image-20220522232916-3.png||_mstalt="430495"]]
134
135
136 [[image:image-20220522232932-4.png||_mstalt="430157"]]
137
138
139 [[image:image-20220522232954-5.png||_mstalt="431847"]]
140
141
142
143 (% style="color:red" %)**Note: LHT65N-PIR use same payload decoder as LHT65.**
144
145
146 Input APP EUI,  APP KEY and DEV EUI:
147
148
149 [[image:image-20220522233118-7.png||_mstalt="430430"]]
150
151
152 === 2.3.2 Step 2: Activate LHT65N-PIR by pressing the ACT button for more than 5 seconds. ===
153
154 Use ACT button to activate LHT65N-PIR 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.
155 [[image:image-20220522233300-8.png||_mstalt="428389" height="219" width="722"]]
156
157
158 == 2.4 Uplink Payload   ( Fport~=2) ==
159
160 The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and (% style="color:#4f81bd" %)**every 20 minutes**(%%) send one uplink by default.
161
162 After each uplink, the (% style="color:blue" %)**BLUE LED**(%%) will blink once.
163
164 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:390px" %)
165 |=(% style="width: 60px;" %)(((
166 **Size(bytes)**
167 )))|=(% style="width: 30px;" %)(((
168 **2**
169 )))|=(% style="width: 100px;" %)(((
170 **2**
171 )))|=(% style="width: 100px;" %)(((
172 **2**
173 )))|=(% style="width: 50px;" %)(((
174 **1**
175 )))|=(% style="width: 50px;" %)(((
176 **4**
177 )))
178 |(% style="width:97px" %)(((
179 **Value**
180 )))|(% style="width:39px" %)(((
181 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo"]]
182 )))|(% style="width:100px" %)(((
183 (((
184 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
185 )))
186 )))|(% style="width:77px" %)(((
187 (((
188 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
189 )))
190 )))|(% style="width:47px" %)(((
191 [[Ext>>||anchor="H2.4.5Ext23"]] #
192 )))|(% style="width:51px" %)(((
193 [[Ext value>>||anchor="H2.4.6Extvalue"]]
194 )))
195
196 * The First 6 bytes: has fix meanings for every LHT65N-PIR.
197 * The 7th byte (EXT #): defines the external sensor model. It can be (% class="mark" %)0x05 or 0x09(%%) for LHT65N-PIR
198 * The 7^^th^^ byte: Alarm Bit (if this uplink is from periodically or movement)
199 * The 8^^th^^ ~~ 11st  byte: Movement Detect Count.
200
201 === 2.4.1 Decoder in TTN V3 ===
202
203
204 When the uplink payload arrives TTNv3, it shows HEX format and not friendly to read. We can add LHT65N-PIR decoder in TTNv3 for friendly reading.
205
206 Below is the position to put the decoder and LHT65N-PIR decoder can be download from here: [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
207
208
209 [[image:image-20220522234118-10.png||_mstalt="451464" height="353" width="729"]]
210
211
212 === 2.4.2 BAT-Battery Info ===
213
214
215 These two bytes of BAT include the battery state and the actually voltage
216
217 [[image:image-20220523152839-18.png||_mstalt="457613"]]
218
219
220 [[image:image-20220522235639-1.png||_mstalt="431392" height="139" width="727"]]
221
222
223 Check the battery voltage for LHT65N-PIR.
224
225 * BAT status=(0xcba4>>14)&0xFF=11(B)，very good
226 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
227
228
229 === 2.4.3 Built-in Temperature ===
230
231
232 [[image:image-20220522235639-2.png||_mstalt="431756" height="138" width="722"]]
233
234 * Temperature:  0x0ABB/100=27.47℃
235
236 [[image:image-20220522235639-3.png||_mstalt="432120"]]
237
238 * Temperature:  (0xF5C6-65536)/100=-26.18℃
239
240 === 2.4.4 Built-in Humidity ===
241
242
243 [[image:image-20220522235639-4.png||_mstalt="432484" height="138" width="722"]]
244
245 * Humidity:    0x025C/10=60.4%
246
247 === 2.4.5 Ext value ===
248
249 ==== 2.4.5.1 Ext~=0x05, Illuminance Sensor ====
250
251
252 [[image:image-20221224161634-2.png||height="138" width="851"]]
253
254
255 * Illumination=0x005E=94 lux
256
257 The last 2 bytes of data are meaningless
258
259 [[image:image-20221224161725-3.png]]
260
261 * When the sensor is not connected or not connected properly, will show "NULL"
262
263 The last 2 bytes of data are meaningless
264
265
266 == 2.5 Show data on Datacake ==
267
268
269 (((
270 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:
271 )))
272
273 (((
274
275 )))
276
277 (((
278 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
279 )))
280
281 (((
282 (% 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.
283 )))
284
285
286
287 (((
288 Add Datacake:
289 )))
290
291
292 [[image:image-20220523000825-7.png||_mstalt="429884" height="262" width="583"]]
293
294
295
296 Select default key as Access Key:
297
298
299 [[image:image-20220523000825-8.png||_mstalt="430248" height="453" width="406"]]
300
301
302 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/]]) , add LHT65 device.
303
304
305 [[image:image-20221224161935-5.png||height="523" width="409"]]
306
307
308 [[image:image-20221224161957-6.png||height="306" width="852"]]
309
310
311
312 == 2.8 LED Indicator ==
313
314
315 The LHT65N-PIR has a triple color LED which for easy showing different stage .
316
317 While user press ACT button, the LED will work as per LED status with ACT button.
318
319 In a normal working state:
320
321 * For each uplink, the BLUE LED or RED LED will blink once.
322 BLUE LED when external sensor is connected.
323 * RED LED when external sensor is not connected
324 * For each success downlink, the PURPLE LED will blink once
325
326
327 == 2.9 installation ==
328
329
330 [[image:image-20220516231650-1.png||_mstalt="428597" height="436" width="428"]]
331
332
333 = 3. Sensors and Accessories =
334
335 == 3.1 E2 Extension Cable ==
336
337
338 [[image:image-20220619092222-1.png||_mstalt="429533" height="182" width="188"]][[image:image-20220619092313-2.png||_mstalt="430222" height="182" width="173"]]
339
340
341 **1m long breakout cable for LHT65N-E5. Features:**
342
343 * (((
344 Use for AT Command
345 )))
346 * (((
347 Update firmware for LHT65N-PIR
348 )))
349
350 [[image:image-20220619092421-3.png||_mstalt="430547" height="371" width="529"]]
351
352
353 = 4. Configure LHT65N-PIR via AT command or LoRaWAN downlink =
354
355
356 (((
357 Use can configure LHT65N-E5 via AT Command or LoRaWAN Downlink.
358 )))
359
360 * (((
361 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
362 )))
363
364 * (((
365 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
366 )))
367
368 (((
369 There are two kinds of commands to configure LHT65N-E5, they are:
370 )))
371
372 * (((
373 (% style="color:#4f81bd" %)**General Commands**.
374 )))
375
376 (((
377 These commands are to configure:
378 )))
379
380 1. (((
381 General system settings like: uplink interval.
382 )))
383 1. (((
384 LoRaWAN protocol & radio-related commands.
385 )))
386
387 (((
388 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]]
389 )))
390
391 * (((
392 (% style="color:#4f81bd" %)**Commands special design for LHT65N-E5**
393 )))
394
395 (((
396 These commands are only valid for LHT65N-E5, as below:
397 )))
398
399
400 == 4.1 Set Transmit Interval Time ==
401
402
403 Feature: Change LoRaWAN End Node Transmit Interval.
404
405
406 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
407
408 [[image:image-20220523150701-2.png||_mstalt="427453"]]
409
410
411 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
412
413 Format: Command Code (0x01) followed by 3 bytes time value.
414
415 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
416
417 * **Example 1**: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
418
419 * **Example 2**: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
420
421 == 4.2 Currently only supports E5 ==
422
423
424 Feature: Set device password, max 9 digits
425
426
427 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
428
429 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
430 |Command Example|Function|Response
431 |AT+EXT=?|Get or Set external sensor model|(((
432 5
433
434 OK
435 )))
436 |AT+EXT=5|(% colspan="2" %)Set external sensor mode to 5
437
438 (% style="color:#4f81bd" %)**Downlink Command:0xA2**
439
440
441 Total bytes: 2 bytes
442
443 **Example:**
444
445 * 0xA205: Set external sensor type to E5
446
447 == 4.3 Set to sleep mode ==
448
449
450 Feature: Set device to sleep mode
451
452 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
453 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
454
455 (% style="color:#4f81bd" %)**AT Command: AT+SLEEP**
456
457 [[image:image-20220523151218-7.png||_mstalt="430703"]]
458
459
460 (% style="color:#4f81bd" %)**Downlink Command:**
461
462 * There is no downlink command to set to Sleep mode.
463
464
465
466 = 5. Battery & How to replace =
467
468 == 5.1 Battery Type ==
469
470
471 (((
472 LHT65N-E5 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.
473 )))
474
475 (((
476 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
477
478
479 [[image:image-20220515075034-1.png||_mstalt="428961" height="208" width="644"]]
480 )))
481
482 The minimum Working Voltage for the LHT65N-E5 is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
483
484
485 == 5.2 Replace Battery ==
486
487
488 LHT65N-E5 has two screws on the back, Unscrew them, and changing the battery inside is ok. The battery is a general CR17450 battery (3.0v). Any brand should be ok.
489
490 [[image:image-20220515075440-2.png||_mstalt="429546" height="338" width="272"]][[image:image-20220515075625-3.png||_mstalt="431574" height="193" width="257"]]
491
492
493 == 5.3 Battery Life Analyze ==
494
495
496 (((
497 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:
498 [[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]]
499 )))
500
501
502 (((
503 A full detail test report for LHT65N-E5 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]]
504 )))
505
506
507 = 6. FAQ =
508
509 == 6.1 How to use AT Command? ==
510
511
512 LHT65N-E5 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.
513
514
515 [[image:image-20220615153355-1.png||_mstalt="430222"]]
516
517
518
519 [[image:1655802313617-381.png||_mstalt="293917"]]
520
521
522
523 (((
524 In PC, User needs to set serial tool(such as [[**putty**>>https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600** (%%)to access to access serial console for LHT65N-E5. 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.
525 )))
526
527 [[image:image-20220615154519-3.png||_mstalt="431925" height="672" width="807"]]
528
529 AT Command List is as below:
530
531 AT+<CMD>? :  Help on <CMD>
532
533 AT+<CMD> :  Run <CMD>
534
535 AT+<CMD>=<value> :  Set the value
536
537 AT+<CMD>=? :  Get the value
538
539 AT+DEBUG:  Set more info output
540
541 ATZ:  Trig a reset of the MCU
542
543 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
544
545 AT+DEUI:  Get or Set the Device EUI
546
547 AT+DADDR:  Get or Set the Device Address
548
549 AT+APPKEY:  Get or Set the Application Key
550
551 AT+NWKSKEY:  Get or Set the Network Session Key
552
553 AT+APPSKEY:  Get or Set the Application Session Key
554
555 AT+APPEUI:  Get or Set the Application EUI
556
557 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
558
559 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
560
561 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
562
563 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
564
565 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
566
567 AT+RX2FQ:  Get or Set the Rx2 window frequency
568
569 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
570
571 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
572
573 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
574
575 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
576
577 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
578
579 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
580
581 AT+NWKID:  Get or Set the Network ID
582
583 AT+FCU:  Get or Set the Frame Counter Uplink
584
585 AT+FCD:  Get or Set the Frame Counter Downlink
586
587 AT+CLASS:  Get or Set the Device Class
588
589 AT+JOIN:  Join network
590
591 AT+NJS:  Get the join status
592
593 AT+SENDB:  Send hexadecimal data along with the application port
594
595 AT+SEND:  Send text data along with the application port
596
597 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
598
599 AT+RECV:  Print last received data in raw format
600
601 AT+VER:  Get current image version and Frequency Band
602
603 AT+CFM:  Get or Set the confirmation mode (0-1)
604
605 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
606
607 AT+SNR:  Get the SNR of the last received packet
608
609 AT+RSSI:  Get the RSSI of the last received packet
610
611 AT+TDC:  Get or set the application data transmission interval in ms
612
613 AT+PORT:  Get or set the application port
614
615 AT+DISAT:  Disable AT commands
616
617 AT+PWORD: Set password, max 9 digits
618
619 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
620
621 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
622
623 AT+PDTA:  Print the sector data from start page to stop page
624
625 AT+PLDTA:  Print the last few sets of data
626
627 AT+CLRDTA:  Clear the storage, record position back to 1st
628
629 AT+SLEEP:  Set sleep mode
630
631 AT+EXT:  Get or Set external sensor model
632
633 AT+BAT:  Get the current battery voltage in mV
634
635 AT+CFG:  Print all configurations
636
637 AT+WMOD:  Get or Set Work Mode
638
639 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
640
641 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
642
643 AT+SETCNT:  Set the count at present
644
645 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
646
647 AT+RPL:  Get or set response level
648
649 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
650
651 AT+LEAPSEC:  Get or Set Leap Second
652
653 AT+SYNCMOD:  Get or Set time synchronization method
654
655 AT+SYNCTDC:  Get or set time synchronization interval in day
656
657 AT+PID:  Get or set the PID
658
659
660 == 6.2 Where to use AT commands and Downlink commands ==
661
662
663 **AT commands：**
664
665 [[image:image-20220620153708-1.png||_mstalt="429806" height="603" width="723"]]
666
667
668 **Downlink commands:**
669
670
671
672 (% style="color:blue" %)**TTN:**
673
674 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
675
676
677
678 (% style="color:blue" %)**Helium：**
679
680 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
681
682
683
684 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
685
686
687 [[image:image-20220615094850-6.png||_mstalt="433082"]]
688
689
690 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
691
692
693
694 (% style="color:blue" %)**Aws:**
695
696 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
697
698
699 == 6.3 How to change the uplink interval？ ==
700
701
702 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);"]]
703
704
705
706 [[image:image-20220615154519-3.png||_mstalt="431925" height="672" width="807"]]
707
708
709 == 6.4 How to use TTL-USB to connect PC to upgrade firmware? ==
710
711
712 [[image:image-20220615153355-1.png||_mstalt="430222"]]
713
714
715 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
716
717 [[image:image-20220615170542-5.png||_mstalt="430638"]]
718
719
720
721 (% _mstmutation="1" style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
722
723 First connect the four lines；(% style="display:none" %)
724
725 [[image:image-20220621170938-1.png||_mstalt="431340" height="413" width="419"]]，(% style="display:none" %)
726
727
728 Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
729
730 [[image:image-20220621170938-2.png||_mstalt="431704"]]
731
732
733
734 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
735
736 [[image:image-20220615171334-6.png||_mstalt="431028"]]
737
738
739 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
740
741
742 When this interface appears, it indicates that the download has been completed.
743
744 [[image:image-20220620160723-8.png||_mstalt="430703"]]
745
746
747 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
748
749
750
751 [[image:image-20220615154519-3.png||_mstalt="431925" height="672" width="807"]]
752
753
754 = 7. Order Info =
755
756
757 Part Number: (% style="color:#4f81bd" %)** LHT65N-PIR-XX**
758
759 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
760
761 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
762 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
763 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
764 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
765 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
766 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**US915**(%%): LoRaWAN US915 band
767 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
768 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
769
770 = 8. Packing Info =
771
772
773 **Package Includes**:
774
775 * LHT65N-PIR Temperature/Humidity/PIR Sensor x 1
776
777 **Dimension and weight**:
778
779 * Device Size:  10 x 10 x 3.5 mm
780 * Device Weight: 120.5g
781
782 = 9. Reference material =
783
784
785 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0]]
786
787 = 10. FCC Warning =
788
789
790 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
791
792 (1) This device may not cause harmful interference；
793
794 (2) this device must accept any interference received, including interference that may cause undesired operation.

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