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9 (% _msthash="315238" _msttexthash="18964465" _mstvisible="3" %)**Table of Contents:**
10
11 {{toc/}}
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14
15
16
17 = 1. Introduction =
18
19
20 == 1.1 What is LHT65N Temperature & Humidity Sensor ==
21
22
23 (((
24 The Dragino LHT65N 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.**
25 )))
26
27 (((
28 The LHT65N allows users to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, building automation, and so on.
29 )))
30
31 (((
32 LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
33 )))
34
35 (((
36 LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
37 )))
38
39 (((
40 LHT65N supports (% style="color:#4f81bd" %)**Datalog Feature**(%%). It will record the data when there is no network coverage and users can retrieve the sensor value later to ensure no miss for every sensor reading.
41 )))
42
43 (((
44 *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
45 )))
46
47
48
49 == 1.2 Features ==
50
51
52 * Wall mountable
53 * LoRaWAN v1.0.3 Class A protocol
54 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
55 * AT Commands to change parameters
56 * Remote configure parameters via LoRaWAN Downlink
57 * Firmware upgradeable via program port
58 * Built-in 2400mAh battery for up to 10 years of use.
59 * Built-in Temperature & Humidity sensor
60 * Optional External Sensors
61 * Tri-color LED to indicate working status
62 * Datalog feature (Max 3328 records)
63
64 == 1.3 Specification ==
65
66
67 (% style="color:#037691" %)**Built-in Temperature Sensor:**
68
69 * Resolution: 0.01 °C
70 * Accuracy Tolerance : Typ ±0.3 °C
71 * Long Term Drift: < 0.02 °C/yr
72 * Operating Range: -40 ~~ 85 °C
73
74 (% style="color:#037691" %)**Built-in Humidity Sensor:**
75
76 * Resolution: 0.04 %RH
77 * Accuracy Tolerance : Typ ±3 %RH
78 * Long Term Drift: < 0.02 °C/yr
79 * Operating Range: 0 ~~ 96 %RH
80
81 (% style="color:#037691" %)**External Temperature Sensor:**
82
83 * Resolution: 0.0625 °C
84 * ±0.5°C accuracy from -10°C to +85°C
85 * ±2°C accuracy from -55°C to +125°C
86 * Operating Range: -55 °C ~~ 125 °C
87
88 = 2. Connect LHT65N to IoT Server =
89
90
91 == 2.1 How does LHT65N work? ==
92
93
94 (((
95 LHT65N is configured as LoRaWAN OTAA Class A mode by default. Each LHT65N is shipped with a worldwide unique set of OTAA keys. To use LHT65N in a LoRaWAN network, first, we need to put the OTAA keys in LoRaWAN Network Server and then activate LHT65N.
96 )))
97
98 (((
99 If LHT65N is under the coverage of this LoRaWAN network. LHT65N can join the LoRaWAN network automatically. After successfully joining, LHT65N will start to measure environment temperature and humidity, and start to transmit sensor data to the LoRaWAN server. The default period for each uplink is 20 minutes.
100 )))
101
102
103
104 == 2.2 How to Activate LHT65N? ==
105
106
107 (((
108 The LHT65N has two working modes:
109 )))
110
111 * (((
112 (% style="color:blue" %)**Deep Sleep Mode**(%%): LHT65N doesn’t have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.
113 )))
114 * (((
115 (% style="color:blue" %)**Working Mode**(%%):  In this mode, LHT65N works as LoRaWAN Sensor mode to Join LoRaWAN network and send out the sensor data to the server. Between each sampling/tx/rx periodically, LHT65N will be in STOP mode (IDLE mode), in STOP mode, LHT65N has the same power consumption as Deep Sleep mode. 
116 )))
117
118 (((
119 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
120 )))
121
122
123 [[image:image-20220515123819-1.png||_mstalt="430742" _mstvisible="3" height="379" width="317"]]
124
125 [[image:image-20220525110604-2.png||_mstalt="427531" _mstvisible="3"]]
126
127
128
129 == 2.3 Example to join LoRaWAN network ==
130
131
132 (% _msthash="315240" _msttexthash="9205482" _mstvisible="1" class="wikigeneratedid" %)
133 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.
134
135
136 (% _mstvisible="1" class="wikigeneratedid" %)
137 [[image:image-20220522232442-1.png||_mstalt="427830" _mstvisible="3" height="387" width="648"]]
138
139
140 (((
141 Assume the LPS8N is already set to connect to [[TTN V3 network>>url:https://eu1.cloud.thethings.network||_mstvisible="2"]], So it provides network coverage for LHT65N. Next we need to add the LHT65N device in TTN V3:
142 )))
143
144
145
146 === 2.3.1 Step 1: Create Device n TTN ===
147
148
149 (((
150 Create a device in TTN V3 with the OTAA keys from LHT65N.
151 )))
152
153 (((
154 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
155 )))
156
157 [[image:image-20220617150003-1.jpeg]]
158
159 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
160
161 Add APP EUI in the application.
162
163
164 [[image:image-20220522232916-3.png||_mstalt="430495" _mstvisible="3"]]
165
166
167 [[image:image-20220522232932-4.png||_mstalt="430157" _mstvisible="3"]]
168
169
170 [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
171
172
173
174 (% style="color:red" %)**Note: LHT65N use same payload as LHT65.**
175
176
177 [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
178
179
180 Input APP EUI,  APP KEY and DEV EUI:
181
182
183 [[image:image-20220522233118-7.png||_mstalt="430430" _mstvisible="3"]]
184
185
186
187 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
188
189
190 (((
191 Use ACT button to activate LHT65N and it will auto-join to the TTN V3 network. After join success, it will start to upload sensor data to TTN V3 and user can see in the panel.
192 )))
193
194 [[image:image-20220522233300-8.png||_mstalt="428389" _mstvisible="3" height="219" width="722"]]
195
196
197
198 == 2.4 Uplink Payload   ( Fport~=2) ==
199
200
201 (((
202 The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and (% _mstvisible="3" style="color:#4f81bd" %)**every 20 minutes**(%%) send one uplink by default.
203 )))
204
205 (((
206 After each uplink, the (% _mstvisible="3" style="color:blue" %)**BLUE LED**(%%) will blink once.
207 )))
208
209 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:390px" %)
210 |=(% style="width: 60px;" %)(((
211 **Size(bytes)**
212 )))|=(% style="width: 30px;" %)(((
213 **2**
214 )))|=(% style="width: 100px;" %)(((
215 **2**
216 )))|=(% style="width: 100px;" %)(((
217 **2**
218 )))|=(% style="width: 50px;" %)(((
219 **1**
220 )))|=(% style="width: 50px;" %)(((
221 **4**
222 )))
223 |(% style="width:97px" %)(((
224 **Value**
225 )))|(% style="width:39px" %)(((
226 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo"]]
227 )))|(% style="width:100px" %)(((
228 (((
229 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
230 )))
231 )))|(% style="width:77px" %)(((
232 (((
233 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
234 )))
235 )))|(% style="width:47px" %)(((
236 [[Ext>>||anchor="H2.4.5Ext23"]] #
237 )))|(% style="width:51px" %)(((
238 [[Ext value>>||anchor="H2.4.6Extvalue"]]
239 )))
240
241 * The First 6 bytes: has fix meanings for every LHT65N.
242 * The 7th byte (EXT #): defines the external sensor model.
243 * The 8(% _msthash="734578" _msttexthash="21372" _mstvisible="4" %)^^th^^(%%) ~~ 11(% _msthash="734579" _msttexthash="21372" _mstvisible="4" %)^^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.)
244
245 === 2.4.1 Decoder in TTN V3 ===
246
247
248 When the uplink payload arrives TTNv3, it shows HEX format and not friendly to read. We can add LHT65N decoder in TTNv3 for friendly reading.
249
250 Below is the position to put the decoder and LHT65N decoder can be download from here: [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
251
252
253 [[image:image-20220522234118-10.png||_mstalt="451464" _mstvisible="3" height="353" width="729"]]
254
255
256
257 === 2.4.2 BAT-Battery Info ===
258
259
260 These two bytes of BAT include the battery state and the actually voltage
261
262 [[image:image-20220523152839-18.png||_mstalt="457613" _mstvisible="3"]]
263
264
265 [[image:image-20220522235639-1.png||_mstalt="431392" _mstvisible="3" height="139" width="727"]]
266
267
268 Check the battery voltage for LHT65N.
269
270 * BAT status=(0Xcba4>>14)&0xFF=11(B),very good
271 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
272
273 === 2.4.3 Built-in Temperature ===
274
275
276 [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
277
278 * Temperature:  0x0ABB/100=27.47℃
279
280 [[image:image-20220522235639-3.png||_mstalt="432120" _mstvisible="3"]]
281
282 * Temperature:  (0xF5C6-65536)/100=-26.18℃
283
284 === 2.4.4 Built-in Humidity ===
285
286
287 [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
288
289 * Humidity:    0x025C/10=60.4%
290
291 === 2.4.5 Ext # ===
292
293
294 Bytes for External Sensor:
295
296 [[image:image-20220523152822-17.png||_mstalt="454545" _mstvisible="3"]]
297
298
299
300 === 2.4.6 Ext value ===
301
302
303 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
304
305
306 [[image:image-20220522235639-5.png||_mstalt="432848" _mstvisible="3"]]
307
308
309 * DS18B20 temp=0x0ADD/100=27.81℃
310
311 The last 2 bytes of data are meaningless
312
313
314
315 [[image:image-20220522235639-6.png||_mstalt="433212" _mstvisible="3"]]
316
317
318 * External temperature= (0xF54F-65536)/100=-27.37℃
319
320 The last 2 bytes of data are meaningless
321
322 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
323
324
325
326 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
327
328
329 (((
330 Timestamp mode is designed for LHT65N with E3 probe, it will send the uplink payload with Unix timestamp. With the limitation of 11 bytes (max distance of AU915/US915/AS923 band), the time stamp mode will be lack of BAT voltage field, instead, it shows the battery status. The payload is as below:
331 )))
332
333 (((
334
335 )))
336
337 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:480px" %)
338 |=(% style="width: 50px;" %)(((
339 **Size(bytes)**
340 )))|=(% style="width: 70px;" %)(((
341 **2**
342 )))|=(% style="width: 120px;" %)(((
343 **2**
344 )))|=(% style="width: 120px;" %)(((
345 **2**
346 )))|=(% style="width: 50px;" %)(((
347 **1**
348 )))|=(% style="width: 70px;" %)(((
349 **4**
350 )))
351 |(% style="width:110px" %)(((
352 **Value**
353 )))|(% style="width:71px" %)(((
354 [[External temperature>>||anchor="H4.2SetExternalSensorMode"]]
355 )))|(% style="width:99px" %)(((
356 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
357 )))|(% style="width:132px" %)(((
358 BAT Status & [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
359 )))|(% style="width:54px" %)(((
360 Status & Ext
361 )))|(% style="width:64px" %)(((
362 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
363 )))
364
365 * **Battery status & Built-in Humidity**
366
367 (% _mstvisible="1" border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:461px" %)
368 |=(% style="width: 67px;" %)Bit(bit)|=(% style="width: 256px;" %)[15:14]|=(% style="width: 132px;" %)[11:0]
369 |(% style="width:67px" %)Value|(% style="width:256px" %)(((
370 BAT Status
371 00(b): Ultra Low ( BAT <= 2.50v)
372 01(b): Low  (2.50v <=BAT <= 2.55v)
373 10(b): OK   (2.55v <= BAT <=2.65v)
374 11(b): Good   (BAT >= 2.65v)
375 )))|(% style="width:132px" %)(((
376 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
377 )))
378
379 * **Status & Ext Byte**
380
381 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:500px" %)
382 |=(% scope="row" style="width: 60px;" %)**Bits**|(% style="width:90px" %)**7**|(% style="width:100px" %)**6**|(% style="width:90px" %)**5**|(% style="width:100px" %)**4**|(% style="width:60px" %)**[3:0]**
383 |=(% 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)
384
385 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
386 * (% style="color:blue" %)**Sync time OK**: (%%) 1: Set time ok,0: N/A. After time SYNC request is sent, LHT65N will set this bit to 0 until got the time stamp from the application server.
387 * (% style="color:blue" %)**Unix Time Request**:(%%)  1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65N will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)
388
389 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
390
391
392 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
393
394 be used to power the external ADC sensor; user can control the power on time for this
395
396 (% style="color:blue" %)**sensor by setting:**
397
398 **AT+EXT=6,timeout**  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)**Time to power this sensor, from 0 ~~ 65535ms**
399
400 **For example:**
401
402 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
403
404
405 Or use **downlink command A2** to set the same.
406
407 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
408
409 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.
410
411 [[image:image-20220628150112-1.png||height="241" width="285"]]
412
413
414 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
415
416 [[image:image-20220628150714-4.png]]
417
418
419 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.
420
421
422 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
423
424 [[image:image-20220628151005-5.png]]
425
426
427 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
428
429 [[image:image-20220628151056-6.png]]
430
431
432 3) Within range
433
434 [[image:image-20220628151143-7.png]]
435
436
437
438 ==== 2.4.6.4 Ext~=2 TMP117 Sensor (Since Firmware v1.3) ====
439
440
441 [[image:image-20220927095645-1.png||height="534" width="460"]]
442
443
444 (% style="color:blue" %)**Ext=2,Temperature Sensor(TMP117):**
445
446 [[image:image-20220906102307-7.png]]
447
448
449 (% style="color:blue" %)**Interrupt Mode and Counting Mode:**
450
451 The external cable NE2 can be use for MOD4 and MOD8
452
453
454
455 ==== 2.4.6.5 Ext~=4 Interrupt Mode (Since Firmware v1.3) ====
456
457
458 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will send an uplink when there is a trigger.**
459
460
461 (% style="color:blue" %)**Interrupt Mode can be used to connect to external interrupt sensors such as:**
462
463 (% style="color:#037691" %)**Case 1: Door Sensor.** (%%)3.3v Out for such sensor is just to detect Open/Close.
464
465 In Open State, the power consumption is the same as if there is no probe
466
467 In Close state, the power consumption will be 3uA higher than normal.
468
469 [[image:image-20220906100852-1.png||height="205" width="377"]]
470
471
472 Ext=4,Interrupt Sensor:
473
474 (% border="1.5" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:478px" %)
475 |(% style="width:101px" %)(((
476 AT+EXT=4,1
477 )))|(% style="width:373px" %)(((
478 Sent uplink packet in both rising and falling interrupt
479 )))
480 |(% style="width:101px" %)(((
481 AT+EXT=4,2
482 )))|(% style="width:373px" %)(((
483 Sent uplink packet only in falling interrupt
484 )))
485 |(% style="width:101px" %)(((
486 AT+EXT=4,3
487 )))|(% style="width:373px" %)(((
488 Sent uplink packet only in rising interrupt
489 )))
490
491 Trigger by falling edge:
492
493 [[image:image-20220906101145-2.png]]
494
495
496 Trigger by raising edge:
497
498 [[image:image-20220906101145-3.png]]
499
500
501
502 ==== 2.4.6.6 Ext~=8 Counting Mode(Since Firmware v1.3) ====
503
504
505 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will count for every interrupt and uplink periodically.**
506
507
508 (% style="color:blue" %)**Case 1**(%%):  Low power consumption Flow Sensor, such flow sensor has pulse output and the power consumption in uA level and can be powered by LHT65N.
509
510 [[image:image-20220906101320-4.png||height="366" width="698"]]
511
512
513 (% style="color:blue" %)**Case 2**(%%):  Normal Flow Sensor: Such flow sensor has higher power consumption and is not suitable to be powered by LHT65N. It is powered by external power and output <3.3v pulse
514
515 [[image:image-20220906101320-5.png||height="353" width="696"]]
516
517
518 Ext=8, Counting Sensor ( 4 bytes):
519
520 (% border="2" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:381px" %)
521 |(% style="width:138px" %)(((
522 AT+EXT=8,0
523 )))|(% style="width:240px" %)(((
524 Count at falling interrupt
525 )))
526 |(% style="width:138px" %)(((
527 AT+EXT=8,1
528 )))|(% style="width:240px" %)(((
529 Count at rising interrupt
530 )))
531 |(% style="width:138px" %)(((
532 AT+SETCNT=60
533 )))|(% style="width:240px" %)(((
534 Sent current count to 60
535 )))
536
537 [[image:image-20220906101320-6.png]]
538
539
540 (% style="color:blue" %)**A2 downlink Command:**
541
542 A2 02:  Same as AT+EXT=2 (AT+EXT= second byte)
543
544 A2 06 01 F4:  Same as AT+EXT=6,500 (AT+EXT= second byte, third and fourth bytes)
545
546 A2 04 02:  Same as AT+EXT=4,2 (AT+EXT= second byte, third byte)
547
548 A2 08 01 00:  Same as AT+EXT=8,0 (AT+EXT= second byte, fourth byte)
549
550 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)
551
552
553
554 == 2.5 Show data on Datacake ==
555
556
557 (((
558 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:
559 )))
560
561 (((
562
563 )))
564
565 (((
566 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
567 )))
568
569 (((
570 (% 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.
571 )))
572
573 (((
574
575 )))
576
577 (((
578 Add Datacake:
579 )))
580
581
582 [[image:image-20220523000825-7.png||_mstalt="429884" _mstvisible="3" height="262" width="583"]]
583
584
585
586 Select default key as Access Key:
587
588
589 [[image:image-20220523000825-8.png||_mstalt="430248" _mstvisible="3" height="453" width="406"]]
590
591
592 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/||_mstvisible="2"]]) , add LHT65 device.
593
594
595 [[image:image-20220523000825-9.png||_mstalt="430612" _mstvisible="3" height="366" width="392"]]
596
597
598 [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
599
600
601
602 == 2.6 Datalog Feature ==
603
604
605 (((
606 Datalog Feature is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, LHT65N will store the reading for future retrieving purposes. There are two ways for IoT servers to get datalog from LHT65N.
607 )))
608
609
610
611 === 2.6.1 Ways to get datalog via LoRaWAN ===
612
613
614 There are two methods:
615
616 (% style="color:blue" %)**Method 1:** (%%)IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specified time range.
617
618
619 (% style="color:blue" %)**Method 2: **(%%)Set [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]], LHT65N will wait for ACK for every uplink, when there is no LoRaWAN network, LHT65N will mark these records with non-ack messages and store the sensor data, and it will send all messages (10s interval) after the network recovery.
620
621
622 (% style="color:red" %)**Note for method 2:**
623
624 * a) LHT65N will do an ACK check for data records sending to make sure every data arrive server.
625 * b) LHT65N will send data in **CONFIRMED Mode** when PNACKMD=1, but LHT65N won't re-transmit the packet if it doesn't get ACK, it will just mark it as a NONE-ACK message. In a future uplink if LHT65N gets a ACK, LHT65N will consider there is a network connection and resend all NONE-ACK Message.
626
627 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
628
629
630 [[image:image-20220703111700-2.png||height="381" width="1119"]]
631
632
633
634 === 2.6.2 Unix TimeStamp ===
635
636
637 LHT65N uses Unix TimeStamp format based on
638
639
640 [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
641
642
643
644 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
645
646 Below is the converter example
647
648 [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
649
650 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
651
652
653
654 === 2.6.3 Set Device Time ===
655
656
657 (((
658 (% style="color:blue" %)**There are two ways to set device's time:**
659 )))
660
661 (((
662 **1.  Through LoRaWAN MAC Command (Default settings)**
663 )))
664
665 (((
666 User need to set SYNCMOD=1 to enable sync time via MAC command.
667 )))
668
669 (((
670 Once LHT65N Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to LHT65N. If LHT65N fails to get the time from the server, LHT65N will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).
671 )))
672
673 (((
674 (% 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.**
675 )))
676
677
678
679 (((
680 **2. Manually Set Time**
681 )))
682
683 (((
684 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
685 )))
686
687
688
689 === 2.6.4 Poll sensor value ===
690
691
692 User can poll sensor value based on timestamps from the server. Below is the downlink command.
693
694 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
695
696
697 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.
698
699 For example, downlink command **31 5FC5F350 5FC6 0160 05**
700
701 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
702
703 Uplink Internal =5s,means LHT65N will send one packet every 5s. range 5~~255s.
704
705
706
707 === 2.6.5 Datalog Uplink payload ===
708
709
710 The Datalog poll reply uplink will use below payload format.
711
712 **Retrieval data payload:**
713
714 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:480px" %)
715 |=(% style="width: 60px;" %)(((
716 **Size(bytes)**
717 )))|=(% style="width: 90px;" %)**2**|=(% style="width: 90px;" %)**2**|=(% style="width: 70px;" %)**2**|=(% style="width: 100px;" %)**1**|=(% style="width: 70px;" %)**4**
718 |(% 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"]]
719
720 **Poll message flag & Ext:**
721
722 [[image:image-20221006192726-1.png||height="112" width="754"]]
723
724 (% 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)
725
726 (% style="color:blue" %)**Poll Message Flag**(%%): 1: This message is a poll message reply.
727
728 * Poll Message Flag is set to 1.
729
730 * Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
731
732 For example, in US915 band, the max payload for different DR is:
733
734 (% style="color:blue" %)**a) DR0:** (%%)max is 11 bytes so one entry of data
735
736 (% style="color:blue" %)**b) DR1:**(%%) max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
737
738 (% style="color:blue" %)**c) DR2:**(%%) total payload includes 11 entries of data
739
740 (% style="color:blue" %)**d) DR3: **(%%)total payload includes 22 entries of data.
741
742 If devise doesn't have any data in the polling time. Device will uplink 11 bytes of 0   
743
744
745 **Example:**
746
747 If LHT65N has below data inside Flash:
748
749 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
750
751
752 If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705
753
754 Where : Start time: 60065F97 = time 21/1/19 04:27:03
755
756 Stop time: 60066DA7= time 21/1/19 05:27:03
757
758
759 **LHT65N will uplink this payload.**
760
761 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
762
763
764 __**7FFF089801464160065F97**__ **__7FFF__ __088E__ __014B__ __41__ __60066009__** 7FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
765
766 Where the first 11 bytes is for the first entry:
767
768 7FFF089801464160065F97
769
770 Ext sensor data=0x7FFF/100=327.67
771
772 Temp=0x088E/100=22.00
773
774 Hum=0x014B/10=32.6
775
776 poll message flag & Ext=0x41,means reply data,Ext=1
777
778 Unix time is 0x60066009=1611030423s=21/1/19 04:27:03
779
780
781
782 == 2.7 Alarm Mode & Feature "Multi sampling, one uplink" ==
783
784
785 (((
786 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.
787 )))
788
789 (((
790 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
791
792
793
794 === 2.7.1 ALARM MODE ( Since v1.3.1 firmware) ===
795
796
797 **Internal GXHT30 temperature alarm**
798
799 (((
800 (% class="box infomessage" %)
801 (((
802 **AT+WMOD=3**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
803
804 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
805
806 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
807
808 **AT+ARTEMP=? **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
809
810 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
811
812 **AT+LEDALARM=1** :       Enable LED visual Alarm.
813 )))
814 )))
815
816 (% style="color:#4f81bd" %)**Downlink Command:**
817
818 AT+WMOD=1:  A501  ,  AT+WMOD=0 :  A600
819
820 AT+CITEMP=1 : A60001
821
822 AT+ARTEMP=1,60  :  A70001003C
823
824 AT+ARTEMP=-16,60 :  A7FFF0003C
825
826 AT+LEDALARM=1  :  3601
827
828
829 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
830
831 Total bytes: 8 bytes
832
833 **Example: **AA0100010001003C
834
835 WMOD=01
836
837 CITEMP=0001
838
839 TEMPlow=0001
840
841 TEMPhigh=003C
842
843
844 **DS18B20 and TMP117 Threshold Alarm**
845
846 **~ AT+WMOD=1,60,-10,20**
847
848 (% style="color:#4f81bd" %)**Downlink Command:**
849
850 **Example: **A5013CFC180014
851
852 MOD=01
853
854 CITEMP=3C(S)
855
856 TEMPlow=FC18
857
858 TEMPhigh=0014
859
860
861 **Fluctuation alarm for DS18B20 and TMP117**
862
863 **AT+WMOD=2,60,5** 
864
865 (% style="color:#4f81bd" %)**Downlink Command:**
866
867 **Example: **A5023C05
868
869 MOD=02
870
871 CITEMP=3C(S)
872
873 temperature fluctuation=05
874
875
876 ==== **Sampling multiple times and uplink together** ====
877
878 **AT+WMOD=3,1,60,20,-16,32,1**  ~/~/ Mode 3, the collection interval is 60s, the total number of collection is 20 times, and the data of these 20 times will be sent to the 20th time, with a maximum of 60 groups, the normal working temperature range is -16 to 32°C, 1 is to open the temperature alarm, 0 is to close the temperature alarm, and the temperature is turned on. After the alarm, if the temperature collected at the current time exceeds the normal working temperature, a data will be sent immediately.
879
880 (% style="color:#4f81bd" %)**Downlink Command:**
881
882 **Example: **A50301003C14FFF0002001
883
884 MOD=03
885
886 EXT=01
887
888 CITEMP=003C(S)
889
890 Total number of acquisitions=14
891
892 TEMPlow=FFF0
893
894 TEMPhigh=0020
895
896 ARTEMP=01
897
898
899 **Uplink payload( Fport=3)**
900
901 **Example: **CBEA0109920A4109C4
902
903 BatV=CBEA
904
905 EXT=01
906
907 Temp1=0992  ~/~/ 24.50℃
908
909 Temp2=0A41  ~/~/ 26.25℃
910
911 Temp3=09C4  ~/~/ 25.00℃
912
913
914 (% style="color:red" %)**Note: This uplink will automatically select the appropriate DR according to the data length**
915
916 (% style="color:red" %)** In this mode, the temperature resolution of ds18b20 is 0.25℃ to save power consumption**
917 )))
918
919
920 === 2.7.2 ALARM MODE ( Before v1.3.1 firmware) ===
921
922
923 (% _mstvisible="1" class="box infomessage" %)
924 (((
925 (((
926 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
927 )))
928
929 (((
930 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
931 )))
932
933 (((
934 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
935 )))
936
937 (((
938 **AT+ARTEMP=? **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
939 )))
940
941 (((
942 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
943 )))
944 )))
945
946 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
947
948 Total bytes: 8 bytes
949
950 **Example:**AA0100010001003C
951
952 WMOD=01
953
954 CITEMP=0001
955
956 TEMPlow=0001
957
958 TEMPhigh=003C
959
960
961
962 == 2.8 LED Indicator ==
963
964
965 The LHT65 has a triple color LED which for easy showing different stage .
966
967 While user press ACT button, the LED will work as per LED status with ACT button.
968
969 In a normal working state:
970
971 * For each uplink, the BLUE LED or RED LED will blink once.
972 BLUE LED when external sensor is connected.
973 * RED LED when external sensor is not connected
974 * For each success downlink, the PURPLE LED will blink once
975
976 == 2.9 installation ==
977
978
979 (% _mstvisible="1" %)
980 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
981
982
983
984 = 3. Sensors and Accessories =
985
986
987 == 3.1 E2 Extension Cable ==
988
989
990 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
991
992
993 **1m long breakout cable for LHT65N. Features:**
994
995 * (((
996 Use for AT Command, works for both LHT52/LHT65N
997 )))
998 * (((
999 Update firmware for LHT65N, works for both LHT52/LHT65N
1000 )))
1001 * (((
1002 Supports ADC mode to monitor external ADC
1003 )))
1004 * (((
1005 Supports Interrupt mode
1006 )))
1007 * (((
1008 Exposed All pins from the LHT65N Type-C connector.
1009
1010
1011
1012 )))
1013
1014 [[image:image-20220619092421-3.png||height="371" width="529"]]
1015
1016
1017
1018
1019 == 3.2 E3 Temperature Probe ==
1020
1021
1022 [[image:image-20220515080154-4.png||_mstalt="434681" _mstvisible="3" alt="photo-20220515080154-4.png" height="182" width="161"]] [[image:image-20220515080330-5.png||_mstalt="428792" _mstvisible="3" height="201" width="195"]]
1023
1024
1025 Temperature sensor with 2 meters cable long
1026
1027 * Resolution: 0.0625 °C
1028 * ±0.5°C accuracy from -10°C to +85°C
1029 * ±2°C accuracy from -55°C to +125°C
1030 * Operating Range: -40 ~~ 125 °C
1031 * Working voltage 2.35v ~~ 5v
1032
1033 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1034
1035
1036 (((
1037 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1038 )))
1039
1040 * (((
1041 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1042 )))
1043
1044 * (((
1045 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1046 )))
1047
1048 (((
1049 There are two kinds of commands to configure LHT65N, they are:
1050 )))
1051
1052 * (((
1053 (% style="color:#4f81bd" %)**General Commands**.
1054 )))
1055
1056 (((
1057 These commands are to configure:
1058 )))
1059
1060 1. (((
1061 General system settings like: uplink interval.
1062 )))
1063 1. (((
1064 LoRaWAN protocol & radio-related commands.
1065 )))
1066
1067 (((
1068 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]]
1069 )))
1070
1071 * (((
1072 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1073 )))
1074
1075 (((
1076 These commands are only valid for LHT65N, as below:
1077 )))
1078
1079
1080
1081 == 4.1 Set Transmit Interval Time ==
1082
1083
1084 Feature: Change LoRaWAN End Node Transmit Interval.
1085
1086
1087 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1088
1089 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
1090
1091
1092 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1093
1094 Format: Command Code (0x01) followed by 3 bytes time value.
1095
1096 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
1097
1098 * **Example 1**: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
1099
1100 * **Example 2**: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
1101
1102 == 4.2 Set External Sensor Mode ==
1103
1104
1105 Feature: Change External Sensor Mode.
1106
1107
1108 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1109
1110 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1111
1112
1113 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1114
1115 Total bytes: 2 ~~ 5 bytes
1116
1117 **Example:**
1118
1119 * 0xA201: Set external sensor type to E1
1120
1121 * 0xA209: Same as AT+EXT=9
1122
1123 * 0xA20702003c: Same as AT+SETCNT=60
1124
1125 == 4.3 Enable/Disable uplink Temperature probe ID ==
1126
1127
1128 (((
1129 Feature: If PID is enabled, device will send the temperature probe ID on:
1130 )))
1131
1132 * (((
1133 First Packet after OTAA Join
1134 )))
1135 * (((
1136 Every 24 hours since the first packet.
1137 )))
1138
1139 (((
1140 PID is default set to disable (0)
1141
1142
1143 )))
1144
1145 (% style="color:#4f81bd" %)**AT Command:**
1146
1147 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1148
1149
1150 (% style="color:#4f81bd" %)**Downlink Command:**
1151
1152 * **0xA800**  **~-~->** AT+PID=0
1153 * **0xA801**     **~-~->** AT+PID=1
1154
1155 == 4.4 Set Password ==
1156
1157
1158 Feature: Set device password, max 9 digits
1159
1160
1161 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1162
1163 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1164
1165
1166 (% style="color:#4f81bd" %)**Downlink Command:**
1167
1168 No downlink command for this feature.
1169
1170
1171
1172 == 4.5 Quit AT Command ==
1173
1174
1175 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1176
1177
1178 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1179
1180 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1181
1182
1183 (% style="color:#4f81bd" %)**Downlink Command:**
1184
1185 No downlink command for this feature.
1186
1187
1188
1189 == 4.6 Set to sleep mode ==
1190
1191
1192 Feature: Set device to sleep mode
1193
1194 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1195 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1196
1197 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1198
1199 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1200
1201
1202 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1203
1204 * There is no downlink command to set to Sleep mode.
1205
1206 == 4.7 Set system time ==
1207
1208
1209 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1210
1211
1212 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1213
1214 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1215
1216
1217 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1218
1219 0x306007806000  ~/~/  Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1220
1221
1222
1223 == 4.8 Set Time Sync Mode ==
1224
1225
1226 (((
1227 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1228 )))
1229
1230 (((
1231 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.
1232
1233
1234 )))
1235
1236 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1237
1238 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1239
1240
1241 (% style="color:#4f81bd" %)**Downlink Command:**
1242
1243 0x28 01  ~/~/  Same As AT+SYNCMOD=1
1244 0x28 00  ~/~/  Same As AT+SYNCMOD=0
1245
1246
1247
1248 == 4.9 Set Time Sync Interval ==
1249
1250
1251 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1252
1253
1254 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1255
1256 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1257
1258
1259 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1260
1261 **0x29 0A**  ~/~/ Same as AT+SYNCTDC=0x0A
1262
1263
1264
1265 == 4.10 Print data entries base on page. ==
1266
1267
1268 Feature: Print the sector data from start page to stop page (max is 416 pages).
1269
1270
1271 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1272
1273 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1274
1275
1276 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1277
1278 No downlink commands for feature
1279
1280
1281
1282 == 4.11 Print last few data entries. ==
1283
1284
1285 Feature: Print the last few data entries
1286
1287
1288 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1289
1290 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1291
1292
1293 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1294
1295 No downlink commands for feature
1296
1297
1298
1299 == 4.12 Clear Flash Record ==
1300
1301
1302 Feature: Clear flash storage for data log feature.
1303
1304
1305 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1306
1307 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1308
1309
1310 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1311
1312 * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1313
1314 == 4.13 Auto Send None-ACK messages ==
1315
1316
1317 Feature: LHT65N will wait for ACK for each uplink, If LHT65N doesn't get ACK from the IoT server, it will consider the message doesn't arrive server and store it. LHT65N keeps sending messages in normal periodically. Once LHT65N gets ACK from a server, it will consider the network is ok and start to send the not-arrive message.
1318
1319
1320 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1321
1322 The default factory setting is 0
1323
1324 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:367px" %)
1325 |=(% style="width: 158px;" %)**Command Example**|=(% style="width: 118px;" %)**Function**|=(% style="width: 87px;" %)**Response**
1326 |(% style="width:158px" %)AT+PNACKMD=1|(% style="width:118px" %)Poll None-ACK message|(% style="width:87px" %)OK
1327
1328 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1329
1330 * Example: 0x3401  ~/~/  Same as AT+PNACKMD=1
1331
1332 == 4.14 Modified WMOD command for external sensor TMP117 or DS18B20 temperature alarm(Since firmware 1.3.0) ==
1333
1334
1335 Feature: Set internal and external temperature sensor alarms.
1336
1337 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:500px" %)
1338 |=(% style="width: 250px;" %)**Command Example**|=(% style="width: 200px;" %)**Function**|=(% style="width: 50px;" %)**Response**
1339 |(% style="width:268px" %)AT+WMOD=parameter1,parameter2,parameter3,parameter4|(% style="width:255px" %)Set internal and external temperature sensor alarms|(% style="width:181px" %)OK
1340
1341 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
1342
1343 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
1344
1345 0): Cancel
1346
1347 1): Threshold alarm
1348
1349 2): Fluctuation alarm
1350
1351
1352 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
1353
1354 (% 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.**
1355
1356
1357 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
1358
1359 1):  If Alarm Mode is set to 1: Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
1360
1361 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
1362
1363
1364 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.
1365
1366 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
1367
1368 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
1369
1370
1371 (% style="color:#4f81bd" %)**Downlink Command: 0xA5**
1372
1373 0xA5 00 ~-~- AT+WMOD=0.
1374
1375 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 )
1376
1377 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))
1378
1379 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
1380
1381 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.
1382
1383
1384
1385 = 5. Battery & How to replace =
1386
1387
1388 == 5.1 Battery Type ==
1389
1390
1391
1392 (((
1393 LHT65N is equipped with a 2400mAH Li-MnO2 (CR17505) battery . The battery is an un-rechargeable battery with low discharge rate targeting for up to 8~~10 years use. This type of battery is commonly used in IoT devices for long-term running, such as water meters.
1394 )))
1395
1396
1397
1398 (((
1399 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1400 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1401 )))
1402
1403 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1404
1405
1406
1407 == 5.2 Replace Battery ==
1408
1409
1410 LHT65N has two screws on the back, Unscrew them, and changing the battery inside is ok. The battery is a general CR17450 battery. Any brand should be ok.
1411
1412 [[image:image-20220515075440-2.png||_mstalt="429546" _mstvisible="3" height="338" width="272"]][[image:image-20220515075625-3.png||_mstalt="431574" _mstvisible="3" height="193" width="257"]]
1413
1414
1415
1416 == 5.3 Battery Life Analyze ==
1417
1418
1419 (((
1420 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:
1421 [[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]]
1422 )))
1423
1424
1425 (((
1426 A full detail test report for LHT65N on different frequency can be found at : [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0>>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0]]
1427 )))
1428
1429
1430
1431 = 6. FAQ =
1432
1433
1434 == 6.1 How to use AT Command? ==
1435
1436
1437 LHT65N supports AT Command set.User can use a USB to TTL adapter plus the Program Cable to connect to LHT65 for using AT command, as below.
1438
1439 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1440
1441
1442 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1443
1444 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1445 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1446 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1447
1448 (((
1449 In PC, User needs to set serial tool(such as [[**putty**>>https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600**(%%) to access to access serial console for LHT65N. The AT commands are disable by default and need to enter password (default:(% style="color:green" %)**123456**) (%%)to active it. Timeout to input AT Command is 5 min, after 5-minute, user need to input password again. User can use AT+DISAT command to disable AT command before timeout.
1450 )))
1451
1452
1453 Input password and ATZ to activate LHT65N,As shown below:
1454
1455 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1456
1457
1458 (% _msthash="506066" _msttexthash="544869" %)
1459 AT Command List is as below:
1460
1461 (% _msthash="506067" _msttexthash="361920" %)
1462 AT+<CMD>? :  Help on <CMD>
1463
1464 (% _msthash="506068" _msttexthash="243061" %)
1465 AT+<CMD> :  Run <CMD>
1466
1467 (% _msthash="506069" _msttexthash="704197" %)
1468 AT+<CMD>=<value> :  Set the value
1469
1470 (% _msthash="506070" _msttexthash="455676" %)
1471 AT+<CMD>=? :  Get the value
1472
1473 (% _msthash="506071" _msttexthash="670553" %)
1474 AT+DEBUG:  Set more info output
1475
1476 (% _msthash="506072" _msttexthash="485888" %)
1477 ATZ:  Trig a reset of the MCU
1478
1479 (% _msthash="506073" _msttexthash="2068872" %)
1480 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1481
1482 (% _msthash="506074" _msttexthash="689169" %)
1483 AT+DEUI:  Get or Set the Device EUI
1484
1485 (% _msthash="506075" _msttexthash="960414" %)
1486 AT+DADDR:  Get or Set the Device Address
1487
1488 (% _msthash="506076" _msttexthash="1079897" %)
1489 AT+APPKEY:  Get or Set the Application Key
1490
1491 (% _msthash="506077" _msttexthash="1326143" %)
1492 AT+NWKSKEY:  Get or Set the Network Session Key
1493
1494 (% _msthash="506078" _msttexthash="1573000" %)
1495 AT+APPSKEY:  Get or Set the Application Session Key
1496
1497 (% _msthash="506079" _msttexthash="1041729" %)
1498 AT+APPEUI:  Get or Set the Application EUI
1499
1500 (% _msthash="506080" _msttexthash="2104206" %)
1501 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1502
1503 (% _msthash="506081" _msttexthash="3369288" %)
1504 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1505
1506 (% _msthash="506082" _msttexthash="1894529" %)
1507 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1508
1509 (% _msthash="506083" _msttexthash="3864172" %)
1510 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1511
1512 (% _msthash="506084" _msttexthash="1712204" %)
1513 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1514
1515 (% _msthash="506085" _msttexthash="1281202" %)
1516 AT+RX2FQ:  Get or Set the Rx2 window frequency
1517
1518 (% _msthash="506086" _msttexthash="2796781" %)
1519 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1520
1521 (% _msthash="506087" _msttexthash="3285165" %)
1522 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1523
1524 (% _msthash="506088" _msttexthash="3286179" %)
1525 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1526
1527 (% _msthash="506089" _msttexthash="4703803" %)
1528 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1529
1530 (% _msthash="506090" _msttexthash="4704999" %)
1531 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1532
1533 (% _msthash="506091" _msttexthash="1528683" %)
1534 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1535
1536 (% _msthash="506092" _msttexthash="757185" %)
1537 AT+NWKID:  Get or Set the Network ID
1538
1539 (% _msthash="506093" _msttexthash="1156597" %)
1540 AT+FCU:  Get or Set the Frame Counter Uplink
1541
1542 (% _msthash="506094" _msttexthash="1273987" %)
1543 AT+FCD:  Get or Set the Frame Counter Downlink
1544
1545 (% _msthash="506095" _msttexthash="859222" %)
1546 AT+CLASS:  Get or Set the Device Class
1547
1548 (% _msthash="506096" _msttexthash="384852" %)
1549 AT+JOIN:  Join network
1550
1551 (% _msthash="506097" _msttexthash="548626" %)
1552 AT+NJS:  Get the join status
1553
1554 (% _msthash="506098" _msttexthash="2546206" %)
1555 AT+SENDB:  Send hexadecimal data along with the application port
1556
1557 (% _msthash="506099" _msttexthash="1932307" %)
1558 AT+SEND:  Send text data along with the application port
1559
1560 (% _msthash="506100" _msttexthash="3560557" %)
1561 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1562
1563 (% _msthash="506101" _msttexthash="1429701" %)
1564 AT+RECV:  Print last received data in raw format
1565
1566 (% _msthash="506102" _msttexthash="1735981" %)
1567 AT+VER:  Get current image version and Frequency Band
1568
1569 (% _msthash="506103" _msttexthash="1189474" %)
1570 AT+CFM:  Get or Set the confirmation mode (0-1)
1571
1572 (% _msthash="506104" _msttexthash="1718210" %)
1573 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1574
1575 (% _msthash="506105" _msttexthash="1339403" %)
1576 AT+SNR:  Get the SNR of the last received packet
1577
1578 (% _msthash="506106" _msttexthash="1452009" %)
1579 AT+RSSI:  Get the RSSI of the last received packet
1580
1581 (% _msthash="506107" _msttexthash="2768142" %)
1582 AT+TDC:  Get or set the application data transmission interval in ms
1583
1584 (% _msthash="506108" _msttexthash="1083914" %)
1585 AT+PORT:  Get or set the application port
1586
1587 (% _msthash="506109" _msttexthash="622440" %)
1588 AT+DISAT:  Disable AT commands
1589
1590 (% _msthash="506110" _msttexthash="868361" %)
1591 AT+PWORD: Set password, max 9 digits
1592
1593 (% _msthash="506111" _msttexthash="2210299" %)
1594 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1595
1596 (% _msthash="506112" _msttexthash="2113462" %)
1597 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1598
1599 (% _msthash="506113" _msttexthash="2087423" %)
1600 AT+PDTA:  Print the sector data from start page to stop page
1601
1602 (% _msthash="506114" _msttexthash="1063127" %)
1603 AT+PLDTA:  Print the last few sets of data
1604
1605 (% _msthash="506115" _msttexthash="1999426" %)
1606 AT+CLRDTA:  Clear the storage, record position back to 1st
1607
1608 (% _msthash="506116" _msttexthash="442130" %)
1609 AT+SLEEP:  Set sleep mode
1610
1611 (% _msthash="506117" _msttexthash="1080222" %)
1612 AT+EXT:  Get or Set external sensor model
1613
1614 (% _msthash="506118" _msttexthash="1309490" %)
1615 AT+BAT:  Get the current battery voltage in mV
1616
1617 (% _msthash="506119" _msttexthash="813891" %)
1618 AT+CFG:  Print all configurations
1619
1620 (% _msthash="506120" _msttexthash="551707" %)
1621 AT+WMOD:  Get or Set Work Mode
1622
1623 (% _msthash="506121" _msttexthash="2631499" %)
1624 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1625
1626 (% _msthash="506122" _msttexthash="3907150" %)
1627 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1628
1629 (% _msthash="506123" _msttexthash="854620" %)
1630 AT+SETCNT:  Set the count at present
1631
1632 (% _msthash="506124" _msttexthash="2554877" %)
1633 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1634
1635 (% _msthash="506125" _msttexthash="771849" %)
1636 AT+RPL:  Get or set response level
1637
1638 (% _msthash="506126" _msttexthash="1484314" %)
1639 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1640
1641 (% _msthash="506127" _msttexthash="741728" %)
1642 AT+LEAPSEC:  Get or Set Leap Second
1643
1644 (% _msthash="506128" _msttexthash="1694017" %)
1645 AT+SYNCMOD:  Get or Set time synchronization method
1646
1647 (% _msthash="506129" _msttexthash="2235948" %)
1648 AT+SYNCTDC:  Get or set time synchronization interval in day
1649
1650 (% _msthash="506130" _msttexthash="425542" %)
1651 AT+PID:  Get or set the PID
1652
1653
1654
1655 == 6.2 Where to use AT commands and Downlink commands ==
1656
1657
1658 **AT commands:**
1659
1660 [[image:image-20220620153708-1.png||height="603" width="723"]]
1661
1662
1663 **Downlink commands:**
1664
1665
1666
1667 (% style="color:blue" %)**TTN:**
1668
1669 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1670
1671
1672
1673 (% style="color:blue" %)**Helium:**
1674
1675 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1676
1677
1678
1679 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1680
1681
1682 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1683
1684
1685 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1686
1687
1688
1689 (% style="color:blue" %)**Aws:**
1690
1691 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1692
1693
1694
1695 == 6.3 How to change the uplink interval? ==
1696
1697
1698 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/||_msthash="506137" _msttexthash="5712018" style="background-color: rgb(255, 255, 255);"]]
1699
1700
1701
1702 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1703
1704
1705 [[image:image-20220615153355-1.png]]
1706
1707 [[image:1655802313617-381.png]]
1708
1709
1710 (((
1711 In PC, User needs to set serial tool(such as [[**putty**>>https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600** (%%)to access to access serial console for LHT65N. The AT commands are disable by default and need to enter password (default:(% style="color:green" %)**123456**(% style="color:red" %))(%%) to active it. Timeout to input AT Command is 5 min, after 5-minute, user need to input password again. User can use AT+DISAT command to disable AT command before timeout.
1712 )))
1713
1714
1715 Input password and ATZ to activate LHT65N,As shown below:
1716
1717 [[image:image-20220615154519-3.png||height="672" width="807"]]
1718
1719
1720
1721 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1722
1723
1724 [[image:image-20220615153355-1.png]]
1725
1726
1727 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1728
1729 [[image:image-20220615170542-5.png]]
1730
1731
1732
1733 (% style="color:blue" %)**Step2**(%%):wiring method.(% style="display:none" %)
1734
1735 (% _msthash="506146" _msttexthash="52173160" %)
1736 First connect the four lines;(% style="display:none" %)
1737
1738 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %),(% style="display:none" %)
1739
1740
1741 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1742
1743 [[image:image-20220621170938-2.png]]
1744
1745
1746
1747 (% style="color:blue" %)**Step3:**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1748
1749 [[image:image-20220615171334-6.png]]
1750
1751
1752 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1753
1754
1755 When this interface appears, it indicates that the download has been completed.
1756
1757 [[image:image-20220620160723-8.png]]
1758
1759
1760 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1761
1762
1763
1764 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1765
1766
1767 [[image:image-20220623110706-1.png]]
1768
1769
1770 [[image:image-20220623112117-4.png||height="459" width="343"]]
1771
1772
1773 (((
1774 In PC, User needs to set serial tool(such as [[**putty**>>https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600** (%%)to access to access serial console for LHT65N. The AT commands are disable by default and need to enter password (default:(% style="color:green" %)**123456**(% style="color:red" %))(%%) to active it. Timeout to input AT Command is 5 min, after 5-minute, user need to input password again. User can use AT+DISAT command to disable AT command before timeout.
1775 )))
1776
1777
1778 Input password and ATZ to activate LHT65N,As shown below:
1779
1780 [[image:image-20220615154519-3.png||height="672" width="807"]]
1781
1782
1783
1784 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1785
1786
1787 [[image:image-20220623110706-1.png]]
1788
1789
1790 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1791
1792 [[image:image-20220615170542-5.png]]
1793
1794
1795
1796 (% style="color:blue" %)**Step2**(%%):wiring method.(% style="display:none" %)
1797
1798 (% _msthash="506146" _msttexthash="52173160" %)
1799 First connect the four lines;
1800
1801 (% _msthash="506146" _msttexthash="52173160" %)
1802 [[image:image-20220623113959-5.png||height="528" width="397"]]
1803
1804 (% _msthash="506146" _msttexthash="52173160" %)
1805 Connect A8 and GND with Dupont wire for a while and then separate,enter reset mode
1806
1807
1808
1809 (% style="color:blue" %)**Step3:**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1810
1811 [[image:image-20220615171334-6.png]]
1812
1813
1814 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1815
1816
1817 When this interface appears, it indicates that the download has been completed.
1818
1819 [[image:image-20220620160723-8.png]]
1820
1821
1822 Finally,Disconnect 3.3v,Connect A8 and GND with Dupont wire for a while and then separate,exit reset mode
1823
1824
1825
1826 = 7. Order Info =
1827
1828
1829 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
1830
1831 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1832
1833 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1834 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1835 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1836 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1837 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1838 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1839 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1840 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1841
1842 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1843
1844 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1845
1846 = 8. Packing Info =
1847
1848
1849 **Package Includes**:
1850
1851 * LHT65N Temperature & Humidity Sensor x 1
1852 * Optional external sensor
1853
1854 **Dimension and weight**:
1855
1856 * Device Size:  10 x 10 x 3.5 mm
1857 * Device Weight: 120.5g
1858
1859 = 9. Reference material =
1860
1861
1862 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1863
1864 = 10. FCC Warning =
1865
1866
1867 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1868
1869 (1) This device may not cause harmful interference;
1870
1871 (2) this device must accept any interference received, including interference that may cause undesired operation.
1872
1873
1874
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