Version 189.13 by Xiaoling on 2022/08/08 17:01
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9 (% _msthash="315238" _msttexthash="18964465" _mstvisible="3" %)**Table of Contents：**
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11 {{toc/}}
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16
17 = 1. Introduction =
18
19 == 1.1 What is LHT65N Temperature & Humidity Sensor ==
20
21
22 (((
23 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.**
24 )))
25
26 (((
27 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.
28 )))
29
30 (((
31 LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
32 )))
33
34 (((
35 LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
36 )))
37
38 (((
39 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.
40 )))
41
42 (((
43 *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
44 )))
45
46
47 == 1.2 Features ==
48
49
50 * Wall mountable
51 * LoRaWAN v1.0.3 Class A protocol
52 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
53 * AT Commands to change parameters
54 * Remote configure parameters via LoRaWAN Downlink
55 * Firmware upgradeable via program port
56 * Built-in 2400mAh battery for up to 10 years of use.
57 * Built-in Temperature & Humidity sensor
58 * Optional External Sensors
59 * Tri-color LED to indicate working status
60 * Datalog feature
61
62
63
64
65 == 1.3 Specification ==
66
67
68 **Built-in Temperature Sensor:**
69
70 * Resolution: 0.01 °C
71 * Accuracy Tolerance : Typ ±0.3 °C
72 * Long Term Drift: < 0.02 °C/yr
73 * Operating Range: -40 ~~ 85 °C
74
75 **Built-in Humidity Sensor:**
76
77 * Resolution: 0.04 %RH
78 * Accuracy Tolerance : Typ ±3 %RH
79 * Long Term Drift: < 0.02 °C/yr
80 * Operating Range: 0 ~~ 96 %RH
81
82 **External Temperature Sensor:**
83
84 * Resolution: 0.0625 °C
85 * ±0.5°C accuracy from -10°C to +85°C
86 * ±2°C accuracy from -55°C to +125°C
87 * Operating Range: -55 °C ~~ 125 °C
88
89
90
91
92 = 2. Connect LHT65N to IoT Server =
93
94 == 2.1 How does LHT65N work? ==
95
96
97 (((
98 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.
99 )))
100
101 (((
102 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.
103 )))
104
105
106
107 == 2.2 How to Activate LHT65N? ==
108
109
110 (((
111 The LHT65N has two working modes:
112 )))
113
114 * (((
115 (% 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.
116 )))
117 * (((
118 (% 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. 
119 )))
120
121 (((
122 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
123 )))
124
125
126 [[image:image-20220515123819-1.png||_mstalt="430742" _mstvisible="3" height="379" width="317"]]
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128 [[image:image-20220525110604-2.png||_mstalt="427531" _mstvisible="3"]]
129
130
131
132 == 2.3 Example to join LoRaWAN network ==
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134
135 (% _msthash="315240" _msttexthash="9205482" _mstvisible="1" class="wikigeneratedid" %)
136 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.
137
138 (% _mstvisible="1" class="wikigeneratedid" %)
139 [[image:image-20220522232442-1.png||_mstalt="427830" _mstvisible="3" height="387" width="648"]]
140
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 LHT65N. Next we need to add the LHT65N device in TTN V3:
144 )))
145
146
147
148 === 2.3.1 Step 1: Create Device n TTN ===
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150
151 (((
152 Create a device in TTN V3 with the OTAA keys from LHT65N.
153 )))
154
155 (((
156 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
157 )))
158
159 [[image:image-20220617150003-1.jpeg]]
160
161 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
162
163 Add APP EUI in the application.
164
165
166 [[image:image-20220522232916-3.png||_mstalt="430495" _mstvisible="3"]]
167
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169 [[image:image-20220522232932-4.png||_mstalt="430157" _mstvisible="3"]]
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172 [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
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175
176 (% style="color:red" %)**Note: LHT65N use same payload as LHT65.**
177
178
179 [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
180
181
182 Input APP EUI,  APP KEY and DEV EUI:
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184
185 [[image:image-20220522233118-7.png||_mstalt="430430" _mstvisible="3"]]
186
187
188
189
190 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
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192
193 (((
194 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.
195 )))
196
197 [[image:image-20220522233300-8.png||_mstalt="428389" _mstvisible="3" height="219" width="722"]]
198
199
200
201
202 == 2.4 Uplink Payload ==
203
204
205 (((
206 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.
207 )))
208
209 (((
210 After each uplink, the (% _mstvisible="3" style="color:blue" %)**BLUE LED**(%%) will blink once.
211 )))
212
213 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:426px" %)
214 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 97px;" %)(% _mstvisible="5" %)
215 (((
216 (% _mstvisible="6" %)
217 (% _msthash="1817478" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
218 )))|=(% _mstvisible="4" style="width: 39px;" %)(% _mstvisible="5" %)
219 (((
220 (% _mstvisible="6" %)
221 (% _msthash="1817479" _msttexthash="4550" _mstvisible="8" %)**2**
222 )))|=(% _mstvisible="4" style="width: 100px;" %)(% _mstvisible="5" %)
223 (((
224 (% _mstvisible="6" %)
225 (% _msthash="1817480" _msttexthash="4550" _mstvisible="8" %)**2**
226 )))|=(% _mstvisible="4" style="width: 77px;" %)(% _mstvisible="5" %)
227 (((
228 (% _mstvisible="6" %)
229 (% _msthash="1817481" _msttexthash="4550" _mstvisible="8" %)**2**
230 )))|=(% _mstvisible="4" style="width: 47px;" %)(% _mstvisible="5" %)
231 (((
232 (% _mstvisible="6" %)
233 (% _msthash="1817482" _msttexthash="4459" _mstvisible="8" %)**1**
234 )))|=(% _mstvisible="4" style="width: 51px;" %)(% _mstvisible="5" %)
235 (((
236 (% _mstvisible="6" %)
237 (% _msthash="1817483" _msttexthash="4732" _mstvisible="8" %)**4**
238 )))
239 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:97px" %)(% _mstvisible="5" %)
240 (((
241 (% _mstvisible="6" %)
242 (% _msthash="1817484" _msttexthash="60203" _mstvisible="8" %)**Value**
243 )))|(% _mstvisible="4" style="width:39px" %)(% _mstvisible="5" %)
244 (((
245 (% _mstvisible="6" %)
246 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo" _msthash="1817485" _msttexthash="22594" _mstvisible="7"]]
247 )))|(% _mstvisible="4" style="width:100px" %)(% _mstvisible="5" %)
248 (((
249 (% _mstvisible="6" %)
250 (((
251 (% _mstvisible="7" %)
252 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224742" _msttexthash="405769" _mstvisible="8"]]
253 )))
254 )))|(% _mstvisible="4" style="width:77px" %)(% _mstvisible="5" %)
255 (((
256 (% _mstvisible="6" %)
257 (((
258 (% _mstvisible="7" %)
259 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2224743" _msttexthash="105872" _mstvisible="8"]]
260 )))
261
262 (% _mstvisible="6" %)
263 (((
264 (% _mstvisible="7" %)
265 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224744" _msttexthash="117429" _mstvisible="8"]]
266 )))
267 )))|(% _mstvisible="4" style="width:47px" %)(% _mstvisible="5" %)
268 (((
269 (% _mstvisible="6" %)
270 [[Ext>>||anchor="H2.4.5Ext23" _msthash="1817486" _msttexthash="32331" _mstvisible="7"]] #
271 )))|(% _mstvisible="4" style="width:51px" %)(% _mstvisible="5" %)
272 (((
273 (% _mstvisible="6" %)
274 [[Ext value>>||anchor="H2.4.6Extvalue" _msthash="1817487" _msttexthash="116545" _mstvisible="7"]]
275 )))
276
277 * The First 6 bytes: has fix meanings for every LHT65N.
278 * The 7th byte (EXT #): defines the external sensor model.
279 * 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.)
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282
283
284 === 2.4.1 Decoder in TTN V3 ===
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286
287 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.
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289 Below is the position to put the decoder and LHT65N decoder can be download from here:
290
291
292 [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0 >>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0||_msthash="315253" _msttexthash="3509064" _mstvisible="2"]]
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295 [[image:image-20220522234118-10.png||_mstalt="451464" _mstvisible="3" height="353" width="729"]]
296
297
298
299
300 === 2.4.2 BAT-Battery Info ===
301
302
303 These two bytes of BAT include the battery state and the actually voltage
304
305 [[image:image-20220523152839-18.png||_mstalt="457613" _mstvisible="3"]]
306
307
308 [[image:image-20220522235639-1.png||_mstalt="431392" _mstvisible="3" height="139" width="727"]]
309
310
311 Check the battery voltage for LHT65N.
312
313 * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
314 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
315
316
317
318
319 === 2.4.3 Built-in Temperature ===
320
321
322 [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
323
324 * Temperature:  0x0ABB/100=27.47℃
325
326 [[image:image-20220522235639-3.png||_mstalt="432120" _mstvisible="3"]]
327
328 * Temperature:  (0xF5C6-65536)/100=-26.18℃
329
330
331
332
333 === 2.4.4 Built-in Humidity ===
334
335
336 [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
337
338 * Humidity:    0x025C/10=60.4%
339
340
341
342
343 === 2.4.5 Ext # ===
344
345
346 Bytes for External Sensor:
347
348 [[image:image-20220523152822-17.png||_mstalt="454545" _mstvisible="3"]]
349
350
351
352 === 2.4.6 Ext value ===
353
354
355 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
356
357
358 [[image:image-20220522235639-5.png||_mstalt="432848" _mstvisible="3"]]
359
360
361 * DS18B20 temp=0x0ADD/100=27.81℃
362
363 The last 2 bytes of data are meaningless
364
365 [[image:image-20220522235639-6.png||_mstalt="433212" _mstvisible="3"]]
366
367
368 * External temperature= (0xF54F-65536)/100=-27.37℃
369
370 The last 2 bytes of data are meaningless
371
372 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
373
374
375
376 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
377
378
379 (((
380 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:
381 )))
382
383 (((
384
385 )))
386
387 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
388 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 96px;" %)(% _mstvisible="5" %)
389 (((
390 (% _mstvisible="6" %)
391 (% _msthash="1817488" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
392 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
393 (((
394 (% _mstvisible="6" %)
395 (% _msthash="1817489" _msttexthash="4550" _mstvisible="8" %)**2**
396 )))|=(% _mstvisible="4" style="width: 99px;" %)(% _mstvisible="5" %)
397 (((
398 (% _mstvisible="6" %)
399 (% _msthash="1817490" _msttexthash="4550" _mstvisible="8" %)**2**
400 )))|=(% _mstvisible="4" style="width: 132px;" %)(% _mstvisible="5" %)
401 (((
402 (% _mstvisible="6" %)
403 (% _msthash="1817491" _msttexthash="4550" _mstvisible="8" %)**2**
404 )))|=(% _mstvisible="4" style="width: 54px;" %)(% _mstvisible="5" %)
405 (((
406 (% _mstvisible="6" %)
407 (% _msthash="1817492" _msttexthash="4459" _mstvisible="8" %)**1**
408 )))|=(% _mstvisible="4" style="width: 64px;" %)(% _mstvisible="5" %)
409 (((
410 (% _mstvisible="6" %)
411 (% _msthash="1817493" _msttexthash="4732" _mstvisible="8" %)**4**
412 )))
413 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:96px" %)(% _mstvisible="5" %)
414 (((
415 (% _mstvisible="6" %)
416 (% _msthash="1817494" _msttexthash="60203" _mstvisible="8" %)**Value**
417 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
418 (((
419 (% _mstvisible="6" %)
420 [[External temperature>>||anchor="H4.2SetExternalSensorMode" _msthash="1817495" _msttexthash="426517" _mstvisible="7"]]
421 )))|(% _mstvisible="4" style="width:99px" %)(% _mstvisible="5" %)
422 (((
423 (% _mstvisible="6" %)
424 (((
425 (% _mstvisible="7" %)
426 [[Built-In>>||anchor="H2.4.3Built-inTemperature" _msthash="2224745" _msttexthash="100464" _mstvisible="8"]]
427 )))
428
429 (% _mstvisible="6" %)
430 (((
431 (% _mstvisible="7" %)
432 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224746" _msttexthash="184041" _mstvisible="8"]]
433 )))
434 )))|(% _mstvisible="4" style="width:132px" %)(% _mstvisible="5" %)
435 (((
436 (% _mstvisible="6" %)
437 (((
438 (% _msthash="2224747" _msttexthash="136331" _mstvisible="7" %)
439 BAT Status &
440 )))
441
442 (% _mstvisible="6" %)
443 (((
444 (% _mstvisible="7" %)
445 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224748" _msttexthash="311181" _mstvisible="8"]]
446 )))
447 )))|(% _mstvisible="4" style="width:54px" %)(% _mstvisible="5" %)
448 (((
449 (% _msthash="1817496" _msttexthash="147225" _mstvisible="6" %)
450 Status & Ext
451 )))|(% _mstvisible="4" style="width:64px" %)(% _mstvisible="5" %)
452 (((
453 (% _mstvisible="6" %)
454 (((
455 (% _mstvisible="7" %)
456 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2224749" _msttexthash="227175" _mstvisible="8"]]
457 )))
458 )))
459
460 (% _mstvisible="1" %)
461 * (% _msthash="2539669" _msttexthash="857922" _mstvisible="3" %)**Battery status & **(% class="wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink" %)**Built-in Humidity**
462
463 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:469px" %)
464 (% _mstvisible="3" %)|=(% _msthash="1230918" _msttexthash="93158" _mstvisible="4" style="width: 65px;" %)Bit(bit)|=(% _msthash="1230919" _msttexthash="57954" _mstvisible="4" style="width: 267px;" %)[15:14]|=(% _msthash="1230920" _msttexthash="48022" _mstvisible="4" style="width: 134px;" %)[11:0]
465 (% _mstvisible="3" %)|(% _msthash="1230921" _msttexthash="60203" _mstvisible="4" style="width:65px" %)Value|(% _mstvisible="4" style="width:267px" %)(% _mstvisible="5" %)
466 (((
467 (% _msthash="1817497" _msttexthash="128427" _mstvisible="6" %)
468 BAT Status
469
470 (% _msthash="1817498" _msttexthash="472784" _mstvisible="6" %)
471 00(b): Ultra Low ( BAT <= 2.50v)
472
473 (% _msthash="1817499" _msttexthash="483678" _mstvisible="6" %)
474 01(b): Low  (2.50v <=BAT <= 2.55v)
475
476 (% _msthash="1817500" _msttexthash="440791" _mstvisible="6" %)
477 10(b): OK   (2.55v <= BAT <=2.65v)
478
479 (% _msthash="1817501" _msttexthash="334191" _mstvisible="6" %)
480 11(b): Good   (BAT >= 2.65v)
481 )))|(% _mstvisible="4" style="width:134px" %)(% _mstvisible="5" %)
482 (((
483 (% _mstvisible="6" %)
484 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="1817502" _msttexthash="311181" _mstvisible="7"]]
485
486 (% _mstvisible="6" %)
487
488 )))
489
490 * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
491
492 (% border="1" cellspacing="8" style="background-color:#ffffcc; color:green; width:520px" %)
493 |(% 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]**
494 |(% 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)
495
496 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
497 * (% 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.
498 * (% 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)
499
500
501
502
503 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
504
505
506 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
507
508 be used to power the external ADC sensor; user can control the power on time for this
509
510 sensor by setting:
511
512 AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)Time to power this sensor, from 0 ~~ 65535ms
513
514 For example:
515
516 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
517
518
519 Or use **downlink command A2** to set the same.
520
521 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
522
523 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.
524
525 [[image:image-20220628150112-1.png||height="241" width="285"]]
526
527
528 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
529
530 [[image:image-20220628150714-4.png]]
531
532
533 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.
534
535 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
536
537 [[image:image-20220628151005-5.png]]
538
539
540 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
541
542 [[image:image-20220628151056-6.png]]
543
544
545 3) Within range
546
547 [[image:image-20220628151143-7.png]]
548
549
550
551 == 2.5 Show data on Datacake ==
552
553
554 (((
555 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:
556 )))
557
558 (((
559
560 )))
561
562 (((
563 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
564 )))
565
566 (((
567 (% 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.
568 )))
569
570 (((
571
572 )))
573
574 (((
575 Add Datacake:
576 )))
577
578
579 [[image:image-20220523000825-7.png||_mstalt="429884" _mstvisible="3" height="262" width="583"]]
580
581
582
583 Select default key as Access Key:
584
585
586 [[image:image-20220523000825-8.png||_mstalt="430248" _mstvisible="3" height="453" width="406"]]
587
588
589 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/||_mstvisible="2"]]) , add LHT65 device.
590
591
592 [[image:image-20220523000825-9.png||_mstalt="430612" _mstvisible="3" height="366" width="392"]]
593
594
595 [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
596
597
598
599 == 2.6 Datalog Feature ==
600
601
602 (((
603 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.
604 )))
605
606
607
608 === 2.6.1 Ways to get datalog via LoRaWAN ===
609
610
611 There are two methods:
612
613 1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specifying time range.
614 1. Set [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]], LHT65N will wait for ACK for every uplink, when there is no LoRaWAN network, LHT65N will store the sensor data, and it will send all messages after the network recovery.
615
616 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
617
618 [[image:image-20220703111700-2.png||height="381" width="1119"]]
619
620
621 === 2.6.2 Unix TimeStamp ===
622
623
624 LHT65N uses Unix TimeStamp format based on
625
626
627 [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
628
629
630
631 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
632
633 Below is the converter example
634
635 [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
636
637 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
638
639
640
641 === 2.6.3 Set Device Time ===
642
643
644 (((
645 There are two ways to set device's time:
646 )))
647
648 (((
649 **~1. Through LoRaWAN MAC Command (Default settings)**
650 )))
651
652 (((
653 User need to set SYNCMOD=1 to enable sync time via MAC command.
654 )))
655
656 (((
657 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).
658 )))
659
660 (((
661 (% 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.**
662 )))
663
664 (((
665
666 )))
667
668 (((
669 **2. Manually Set Time**
670 )))
671
672 (((
673 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
674 )))
675
676
677
678 === 2.6.4 Poll sensor value ===
679
680
681 User can poll sensor value based on timestamps from the server. Below is the downlink command.
682
683 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
684
685
686 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.
687
688 For example, downlink command **31 5FC5F350 5FC6 0160 05**
689
690 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
691
692 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
693
694
695
696 === 2.6.5 Datalog Uplink payload ===
697
698
699 (% _msthash="315267" _msttexthash="2245087" _mstvisible="1" %)
700 The Datalog poll reply uplink will use below payload format.
701
702 (% _mstvisible="1" %)
703 (((
704 (% _mstvisible="2" %)
705
706
707 (% _mstvisible="2" %)
708 (% _msthash="506080" _msttexthash="451581" _mstvisible="4" %)**Retrieval data payload**
709 )))
710
711 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
712 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 93px;" %)(% _mstvisible="5" %)
713 (((
714 (% _mstvisible="6" %)
715 (((
716 (% _mstvisible="7" %)
717 (% _msthash="2224750" _msttexthash="161122" _mstvisible="9" %)**Size(bytes)**
718 )))
719 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
720 (((
721 (% _mstvisible="6" %)
722 (((
723 (% _mstvisible="7" %)
724 (% _msthash="2224751" _msttexthash="4550" _mstvisible="9" %)**2**
725 )))
726 )))|=(% _mstvisible="4" style="width: 102px;" %)(% _mstvisible="5" %)
727 (((
728 (% _mstvisible="6" %)
729 (((
730 (% _mstvisible="7" %)
731 (% _msthash="2224752" _msttexthash="4550" _mstvisible="9" %)**2**
732 )))
733 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
734 (((
735 (% _mstvisible="6" %)
736 (((
737 (% _mstvisible="7" %)
738 (% _msthash="2224753" _msttexthash="4550" _mstvisible="9" %)**2**
739 )))
740 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
741 (((
742 (% _mstvisible="6" %)
743 (((
744 (% _mstvisible="7" %)
745 (% _msthash="2224754" _msttexthash="4459" _mstvisible="9" %)**1**
746 )))
747 )))|=(% _mstvisible="4" style="width: 48px;" %)(% _mstvisible="5" %)
748 (((
749 (% _mstvisible="6" %)
750 (((
751 (% _mstvisible="7" %)
752 (% _msthash="2224755" _msttexthash="4732" _mstvisible="9" %)**4**
753 )))
754 )))
755 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:93px" %)(% _mstvisible="5" %)
756 (((
757 (% _mstvisible="6" %)
758 (((
759 (% _mstvisible="7" %)
760 (% _msthash="2224756" _msttexthash="60203" _mstvisible="9" %)**Value**
761 )))
762 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
763 (((
764 (% _mstvisible="6" %)
765 (((
766 (% _mstvisible="7" %)
767 [[External sensor data>>||anchor="H2.4.6Extvalue" _msthash="2224757" _msttexthash="386672" _mstvisible="8"]]
768 )))
769 )))|(% _mstvisible="4" style="width:102px" %)(% _mstvisible="5" %)
770 (((
771 (% _mstvisible="6" %)
772 (((
773 (% _mstvisible="7" %)
774 (((
775 (% _mstvisible="8" %)
776 [[Built In>>||anchor="H2.4.3Built-inTemperature" _msthash="2671864" _msttexthash="91065" _mstvisible="9"]]
777 )))
778 )))
779
780 (% _mstvisible="6" %)
781 (((
782 (% _mstvisible="7" %)
783 (((
784 (% _mstvisible="8" %)
785 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2671865" _msttexthash="184041" _mstvisible="9"]]
786 )))
787 )))
788 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
789 (((
790 (% _mstvisible="6" %)
791 (((
792 (% _mstvisible="7" %)
793 (((
794 (% _mstvisible="8" %)
795 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2671866" _msttexthash="105872" _mstvisible="9"]]
796 )))
797 )))
798
799 (% _mstvisible="6" %)
800 (((
801 (% _mstvisible="7" %)
802 (((
803 (% _mstvisible="8" %)
804 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2671867" _msttexthash="117429" _mstvisible="9"]]
805 )))
806 )))
807 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
808 (((
809 (% _mstvisible="6" %)
810 (((
811 (% _msthash="2224758" _msttexthash="390390" _mstvisible="7" %)
812 Poll message flag & Ext
813 )))
814 )))|(% _mstvisible="4" style="width:48px" %)(% _mstvisible="5" %)
815 (((
816 (% _mstvisible="6" %)
817 (((
818 (% _mstvisible="7" %)
819 (((
820 (% _mstvisible="8" %)
821 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2671868" _msttexthash="227175" _mstvisible="9"]]
822 )))
823 )))
824
825 (% _mstvisible="6" %)
826 (((
827 (% _mstvisible="7" %)
828 (((
829 (% _mstvisible="8" %)
830
831 )))
832 )))
833 )))
834
835 (% _mstvisible="1" %)
836 (% _msthash="315268" _msttexthash="390390" _mstvisible="3" %)**Poll message flag & Ext**
837
838 (% _mstvisible="1" %)
839 [[image:image-20220523152208-14.png||_mstalt="452920" _mstvisible="3"]]
840
841 (% _mstvisible="1" %)
842 (((
843 (% _mstvisible="2" %)
844 (((
845 (% _msthash="736723" _msttexthash="2005003" _mstvisible="3" %)
846 (((
847 Poll Message Flag: 1: This message is a poll message reply.
848 )))
849 )))
850 )))
851
852 (% _mstvisible="1" %)
853 * (% _mstvisible="3" %)
854 (((
855 (% _mstvisible="4" %)
856 (((
857 (% _msthash="1197157" _msttexthash="561548" _mstvisible="5" %)
858 (((
859 Poll Message Flag is set to 1.
860 )))
861 )))
862 )))
863 * (% _mstvisible="3" %)
864 (((
865 (% _mstvisible="4" %)
866 (((
867 (% _msthash="1197158" _msttexthash="9284964" _mstvisible="5" %)
868 (((
869 Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
870 )))
871 )))
872 )))
873
874 (% _mstvisible="1" %)
875 (((
876 (% _mstvisible="2" %)
877 (((
878 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
879 (((
880
881 )))
882
883 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
884 (((
885 For example, in US915 band, the max payload for different DR is:
886 )))
887 )))
888 )))
889
890 (% _mstvisible="1" %)
891 (((
892 (% _mstvisible="2" %)
893 (((
894 (% _msthash="736725" _msttexthash="1065532" _mstvisible="3" %)
895 (((
896 a) DR0: max is 11 bytes so one entry of data
897 )))
898 )))
899 )))
900
901 (% _mstvisible="1" %)
902 (((
903 (% _mstvisible="2" %)
904 (((
905 (% _msthash="736726" _msttexthash="3265665" _mstvisible="3" %)
906 (((
907 b) DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
908 )))
909 )))
910 )))
911
912 (% _mstvisible="1" %)
913 (((
914 (% _mstvisible="2" %)
915 (((
916 (% _msthash="736727" _msttexthash="1454115" _mstvisible="3" style="text-align: left;" %)
917 (((
918 c) DR2: total payload includes 11 entries of data
919 )))
920 )))
921 )))
922
923 (% _mstvisible="1" %)
924 (((
925 (% _mstvisible="2" %)
926 (((
927 (% _msthash="736728" _msttexthash="1483924" _mstvisible="3" style="text-align: left;" %)
928 (((
929 d) DR3: total payload includes 22 entries of data.
930 )))
931 )))
932 )))
933
934 (% _mstvisible="1" %)
935 (((
936 (% _mstvisible="2" %)
937 (((
938 (% _msthash="736729" _msttexthash="5848349" _mstvisible="3" style="text-align: left;" %)
939 (((
940 If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0   
941 )))
942 )))
943 )))
944
945
946 (% _mstvisible="1" style="text-align: left;" %)
947 (% _msthash="315269" _msttexthash="104767" _mstvisible="3" %)**Example:**
948
949 (% _msthash="315270" _msttexthash="913822" _mstvisible="1" style="text-align: left;" %)
950 If LHT65N has below data inside Flash:
951
952 (% _mstvisible="1" %)
953 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
954
955 (% _mstvisible="1" %)
956 (((
957 (% _msthash="506081" _msttexthash="1663961" _mstvisible="2" style="text-align: left;" %)
958 If user sends below downlink command: (% _mstvisible="3" style="background-color:yellow" %)3160065F9760066DA705
959 )))
960
961 (% _mstvisible="1" %)
962 (((
963 (% _msthash="506082" _msttexthash="1092494" _mstvisible="2" style="text-align: left;" %)
964 Where : Start time: 60065F97 = time 21/1/19 04:27:03
965 )))
966
967 (% _mstvisible="1" %)
968 (((
969 (% _msthash="506083" _msttexthash="737269" _mstvisible="2" style="text-align: left;" %)
970 Stop time 60066DA7= time 21/1/19 05:27:(% _msthash="903005" _msttexthash="9672" _mstvisible="2" %)03
971 )))
972
973 (% _mstvisible="1" %)
974 (((
975 (% _mstvisible="2" %)
976
977 )))
978
979 (% _mstvisible="1" %)
980 (((
981 (% _msthash="506084" _msttexthash="751218" _mstvisible="2" style="text-align: left;" %)
982 LHT65N will uplink this payload.
983 )))
984
985 (% _mstvisible="1" %)
986 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
987
988 (% _msthash="315271" _msttexthash="12012546" _mstvisible="1" style="text-align: left;" %)
989 (((
990 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
991 )))
992
993 (% _msthash="315237" _msttexthash="1385839" %)
994 (((
995 Where the first 11 bytes is for the first entry:
996 )))
997
998 (% _msthash="315238" _msttexthash="274846" %)
999 (((
1000 7FFF089801464160065F97
1001 )))
1002
1003 (% _msthash="315239" _msttexthash="617435" %)
1004 (((
1005 Ext sensor data=0x7FFF/100=327.67
1006 )))
1007
1008 (% _msthash="315240" _msttexthash="270543" %)
1009 (((
1010 Temp=0x0898/100=22.00
1011 )))
1012
1013 (% _msthash="315241" _msttexthash="211783" %)
1014 (((
1015 Hum=0x0146/10=32.6
1016 )))
1017
1018 (% _msthash="315242" _msttexthash="1569776" %)
1019 (((
1020 poll message flag & Ext=0x41,means reply data,Ext=1
1021 )))
1022
1023 (% _msthash="315243" _msttexthash="1120509" %)
1024 (((
1025 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
1026 )))
1027
1028
1029
1030 == 2.7 Alarm Mode ==
1031
1032
1033 (((
1034 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.
1035 )))
1036
1037 (((
1038 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
1039
1040
1041 )))
1042
1043 (((
1044 **AT COMMAND FOR ALARM MODE:**
1045 )))
1046
1047 (% _mstvisible="1" class="box infomessage" %)
1048 (((
1049 (((
1050 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled)
1051 )))
1052
1053 (((
1054 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1055 )))
1056
1057 (((
1058 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1059 )))
1060
1061 (((
1062 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
1063 )))
1064
1065 (((
1066 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1067 )))
1068 )))
1069
1070 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1071
1072 Total bytes: 8 bytes
1073
1074 **Example:**AA0100010001003C
1075
1076 WMOD=01
1077
1078 CITEMP=0001
1079
1080 TEMPlow=0001
1081
1082 TEMPhigh=003C
1083
1084
1085
1086 == 2.8 LED Indicator ==
1087
1088
1089 The LHT65 has a triple color LED which for easy showing different stage .
1090
1091 While user press ACT button, the LED will work as per LED status with ACT button.
1092
1093 In a normal working state:
1094
1095 * For each uplink, the BLUE LED or RED LED will blink once.
1096 BLUE LED when external sensor is connected.
1097 * RED LED when external sensor is not connected
1098 * For each success downlink, the PURPLE LED will blink once
1099
1100
1101
1102
1103 == 2.9 installation ==
1104
1105
1106 (% _mstvisible="1" %)
1107 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
1108
1109
1110
1111 = 3. Sensors and Accessories =
1112
1113 == 3.1 E2 Extension Cable ==
1114
1115
1116 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1117
1118
1119 **1m long breakout cable for LHT65N. Features:**
1120
1121 * (((
1122 Use for AT Command， works for both LHT52/LHT65N
1123 )))
1124 * (((
1125 Update firmware for LHT65N, works for both LHT52/LHT65N
1126 )))
1127 * (((
1128 Supports ADC mode to monitor external ADC
1129 )))
1130 * (((
1131 Supports Interrupt mode
1132 )))
1133 * (((
1134 Exposed All pins from the LHT65N Type-C connector.
1135
1136
1137
1138 )))
1139
1140 [[image:image-20220619092421-3.png||height="371" width="529"]]
1141
1142
1143
1144
1145 == 3.2 E3 Temperature Probe ==
1146
1147
1148 [[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"]]
1149
1150
1151 Temperature sensor with 2 meters cable long
1152
1153 * Resolution: 0.0625 °C
1154 * ±0.5°C accuracy from -10°C to +85°C
1155 * ±2°C accuracy from -55°C to +125°C
1156 * Operating Range: -40 ~~ 125 °C
1157 * Working voltage 2.35v ~~ 5v
1158
1159
1160
1161
1162 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1163
1164
1165 (((
1166 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1167 )))
1168
1169 * (((
1170 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1171 )))
1172
1173 * (((
1174 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1175 )))
1176
1177 (((
1178 There are two kinds of commands to configure LHT65N, they are:
1179 )))
1180
1181 * (((
1182 (% style="color:#4f81bd" %)**General Commands**.
1183 )))
1184
1185 (((
1186 These commands are to configure:
1187 )))
1188
1189 1. (((
1190 General system settings like: uplink interval.
1191 )))
1192 1. (((
1193 LoRaWAN protocol & radio-related commands.
1194 )))
1195
1196 (((
1197 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]]
1198 )))
1199
1200 * (((
1201 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1202 )))
1203
1204 (((
1205 These commands are only valid for LHT65N, as below:
1206 )))
1207
1208
1209
1210 == 4.1 Set Transmit Interval Time ==
1211
1212
1213 Feature: Change LoRaWAN End Node Transmit Interval.
1214
1215
1216 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1217
1218 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
1219
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
1234 == 4.2 Set External Sensor Mode ==
1235
1236
1237 Feature: Change External Sensor Mode.
1238
1239
1240 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1241
1242 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1243
1244
1245 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1246
1247 Total bytes: 2 ~~ 5 bytes
1248
1249 **Example:**
1250
1251 * 0xA201: Set external sensor type to E1
1252
1253 * 0xA209: Same as AT+EXT=9
1254
1255 * 0xA20702003c: Same as AT+SETCNT=60
1256
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 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1283
1284
1285 (% style="color:#4f81bd" %)**Downlink Command:**
1286
1287 * **0xA800**  **~-~->** AT+PID=0
1288 * **0xA801**     **~-~->** AT+PID=1
1289
1290
1291
1292
1293 == 4.4 Set Password ==
1294
1295
1296 Feature: Set device password, max 9 digits
1297
1298
1299 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1300
1301 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1302
1303
1304 (% style="color:#4f81bd" %)**Downlink Command:**
1305
1306 No downlink command for this feature.
1307
1308
1309
1310 == 4.5 Quit AT Command ==
1311
1312
1313 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1314
1315
1316 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1317
1318 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1319
1320
1321 (% style="color:#4f81bd" %)**Downlink Command:**
1322
1323 No downlink command for this feature.
1324
1325
1326
1327 == 4.6 Set to sleep mode ==
1328
1329
1330 Feature: Set device to sleep mode
1331
1332 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1333 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1334
1335 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1336
1337 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1338
1339
1340 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1341
1342 * There is no downlink command to set to Sleep mode.
1343
1344
1345
1346
1347 == 4.7 Set system time ==
1348
1349
1350 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1351
1352
1353 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1354
1355 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1356
1357
1358 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1359
1360 0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1361
1362
1363
1364 == 4.8 Set Time Sync Mode ==
1365
1366
1367 (((
1368 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1369 )))
1370
1371 (((
1372 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.
1373
1374
1375 )))
1376
1377 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1378
1379 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1380
1381
1382 (% style="color:#4f81bd" %)**Downlink Command:**
1383
1384 0x28 01 ~/~/ Same As AT+SYNCMOD=1
1385 0x28 00 ~/~/ Same As AT+SYNCMOD=0
1386
1387
1388
1389 == 4.9 Set Time Sync Interval ==
1390
1391
1392 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1393
1394
1395 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1396
1397 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1398
1399
1400 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1401
1402 **0x29 0A** ~/~/ Same as AT+SYNCTDC=0x0A
1403
1404
1405
1406 == 4.10 Print data entries base on page. ==
1407
1408
1409 Feature: Print the sector data from start page to stop page (max is 416 pages).
1410
1411
1412 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1413
1414 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1415
1416
1417 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1418
1419 No downlink commands for feature
1420
1421
1422
1423 == 4.11 Print last few data entries. ==
1424
1425
1426 Feature: Print the last few data entries
1427
1428
1429 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1430
1431 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1432
1433
1434 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1435
1436 No downlink commands for feature
1437
1438
1439
1440 == 4.12 Clear Flash Record ==
1441
1442
1443 Feature: Clear flash storage for data log feature.
1444
1445
1446 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1447
1448 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1449
1450
1451 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1452
1453 * Example: 0xA301 ~/~/Same as AT+CLRDTA
1454
1455
1456
1457
1458 == 4.13 Auto Send None-ACK messages ==
1459
1460
1461 (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
1462 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.
1463
1464
1465 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1466
1467 (% _msthash="315396" _msttexthash="734682" _mstvisible="1" %)
1468 The default factory setting is 0
1469
1470 (% _mstvisible="1" border="1" style="background-color:#ffffcc; color:green; width:450px" %)
1471 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 171px;" %)(% _msthash="1231737" _msttexthash="251862" _mstvisible="6" %)**Command Example**|=(% _mstvisible="4" style="width: 219px;" %)(% _msthash="1231738" _msttexthash="116025" _mstvisible="6" %)**Function**|=(% _mstvisible="4" style="width: 119px;" %)(% _msthash="1231739" _msttexthash="116831" _mstvisible="6" %)**Response**
1472 (% _mstvisible="3" %)|(% _msthash="1231321" _msttexthash="130455" _mstvisible="4" style="width:171px" %)AT+PNACKMD=1|(% _msthash="1231322" _msttexthash="377026" _mstvisible="4" style="width:219px" %)Poll None-ACK message|(% _msthash="1231323" _msttexthash="14989" _mstvisible="4" style="width:119px" %)OK
1473
1474 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1475
1476 * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1477
1478
1479
1480
1481 = 5. Battery & How to replace =
1482
1483 == 5.1 Battery Type ==
1484
1485
1486 (((
1487 (((
1488 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.
1489 )))
1490 )))
1491
1492 (((
1493
1494 )))
1495
1496 (((
1497 (((
1498 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1499 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1500 )))
1501 )))
1502
1503 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1504
1505
1506
1507 == 5.2 Replace Battery ==
1508
1509
1510 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.
1511
1512 [[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"]]
1513
1514
1515 == 5.3 Battery Life Analyze ==
1516
1517
1518 (((
1519 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:
1520 [[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]]
1521 )))
1522
1523 (((
1524
1525 )))
1526
1527 (((
1528 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]]
1529 )))
1530
1531
1532
1533 = 6. FAQ =
1534
1535
1536 == 6.1 How to use AT Command? ==
1537
1538
1539 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.
1540
1541 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1542
1543
1544 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1545
1546 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1547 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1548 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1549 * (% style="background-color:yellow" %)**USB to TTL 3.3V <~-~-> D-**
1550
1551 (((
1552 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.
1553 )))
1554
1555
1556 Input password and ATZ to activate LHT65N,As shown below:
1557
1558 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1559
1560
1561 (% _msthash="506066" _msttexthash="544869" %)
1562 AT Command List is as below:
1563
1564 (% _msthash="506067" _msttexthash="361920" %)
1565 AT+<CMD>? :  Help on <CMD>
1566
1567 (% _msthash="506068" _msttexthash="243061" %)
1568 AT+<CMD> :  Run <CMD>
1569
1570 (% _msthash="506069" _msttexthash="704197" %)
1571 AT+<CMD>=<value> :  Set the value
1572
1573 (% _msthash="506070" _msttexthash="455676" %)
1574 AT+<CMD>=? :  Get the value
1575
1576 (% _msthash="506071" _msttexthash="670553" %)
1577 AT+DEBUG:  Set more info output
1578
1579 (% _msthash="506072" _msttexthash="485888" %)
1580 ATZ:  Trig a reset of the MCU
1581
1582 (% _msthash="506073" _msttexthash="2068872" %)
1583 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1584
1585 (% _msthash="506074" _msttexthash="689169" %)
1586 AT+DEUI:  Get or Set the Device EUI
1587
1588 (% _msthash="506075" _msttexthash="960414" %)
1589 AT+DADDR:  Get or Set the Device Address
1590
1591 (% _msthash="506076" _msttexthash="1079897" %)
1592 AT+APPKEY:  Get or Set the Application Key
1593
1594 (% _msthash="506077" _msttexthash="1326143" %)
1595 AT+NWKSKEY:  Get or Set the Network Session Key
1596
1597 (% _msthash="506078" _msttexthash="1573000" %)
1598 AT+APPSKEY:  Get or Set the Application Session Key
1599
1600 (% _msthash="506079" _msttexthash="1041729" %)
1601 AT+APPEUI:  Get or Set the Application EUI
1602
1603 (% _msthash="506080" _msttexthash="2104206" %)
1604 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1605
1606 (% _msthash="506081" _msttexthash="3369288" %)
1607 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1608
1609 (% _msthash="506082" _msttexthash="1894529" %)
1610 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1611
1612 (% _msthash="506083" _msttexthash="3864172" %)
1613 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1614
1615 (% _msthash="506084" _msttexthash="1712204" %)
1616 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1617
1618 (% _msthash="506085" _msttexthash="1281202" %)
1619 AT+RX2FQ:  Get or Set the Rx2 window frequency
1620
1621 (% _msthash="506086" _msttexthash="2796781" %)
1622 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1623
1624 (% _msthash="506087" _msttexthash="3285165" %)
1625 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1626
1627 (% _msthash="506088" _msttexthash="3286179" %)
1628 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1629
1630 (% _msthash="506089" _msttexthash="4703803" %)
1631 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1632
1633 (% _msthash="506090" _msttexthash="4704999" %)
1634 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1635
1636 (% _msthash="506091" _msttexthash="1528683" %)
1637 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1638
1639 (% _msthash="506092" _msttexthash="757185" %)
1640 AT+NWKID:  Get or Set the Network ID
1641
1642 (% _msthash="506093" _msttexthash="1156597" %)
1643 AT+FCU:  Get or Set the Frame Counter Uplink
1644
1645 (% _msthash="506094" _msttexthash="1273987" %)
1646 AT+FCD:  Get or Set the Frame Counter Downlink
1647
1648 (% _msthash="506095" _msttexthash="859222" %)
1649 AT+CLASS:  Get or Set the Device Class
1650
1651 (% _msthash="506096" _msttexthash="384852" %)
1652 AT+JOIN:  Join network
1653
1654 (% _msthash="506097" _msttexthash="548626" %)
1655 AT+NJS:  Get the join status
1656
1657 (% _msthash="506098" _msttexthash="2546206" %)
1658 AT+SENDB:  Send hexadecimal data along with the application port
1659
1660 (% _msthash="506099" _msttexthash="1932307" %)
1661 AT+SEND:  Send text data along with the application port
1662
1663 (% _msthash="506100" _msttexthash="3560557" %)
1664 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1665
1666 (% _msthash="506101" _msttexthash="1429701" %)
1667 AT+RECV:  Print last received data in raw format
1668
1669 (% _msthash="506102" _msttexthash="1735981" %)
1670 AT+VER:  Get current image version and Frequency Band
1671
1672 (% _msthash="506103" _msttexthash="1189474" %)
1673 AT+CFM:  Get or Set the confirmation mode (0-1)
1674
1675 (% _msthash="506104" _msttexthash="1718210" %)
1676 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1677
1678 (% _msthash="506105" _msttexthash="1339403" %)
1679 AT+SNR:  Get the SNR of the last received packet
1680
1681 (% _msthash="506106" _msttexthash="1452009" %)
1682 AT+RSSI:  Get the RSSI of the last received packet
1683
1684 (% _msthash="506107" _msttexthash="2768142" %)
1685 AT+TDC:  Get or set the application data transmission interval in ms
1686
1687 (% _msthash="506108" _msttexthash="1083914" %)
1688 AT+PORT:  Get or set the application port
1689
1690 (% _msthash="506109" _msttexthash="622440" %)
1691 AT+DISAT:  Disable AT commands
1692
1693 (% _msthash="506110" _msttexthash="868361" %)
1694 AT+PWORD: Set password, max 9 digits
1695
1696 (% _msthash="506111" _msttexthash="2210299" %)
1697 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1698
1699 (% _msthash="506112" _msttexthash="2113462" %)
1700 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1701
1702 (% _msthash="506113" _msttexthash="2087423" %)
1703 AT+PDTA:  Print the sector data from start page to stop page
1704
1705 (% _msthash="506114" _msttexthash="1063127" %)
1706 AT+PLDTA:  Print the last few sets of data
1707
1708 (% _msthash="506115" _msttexthash="1999426" %)
1709 AT+CLRDTA:  Clear the storage, record position back to 1st
1710
1711 (% _msthash="506116" _msttexthash="442130" %)
1712 AT+SLEEP:  Set sleep mode
1713
1714 (% _msthash="506117" _msttexthash="1080222" %)
1715 AT+EXT:  Get or Set external sensor model
1716
1717 (% _msthash="506118" _msttexthash="1309490" %)
1718 AT+BAT:  Get the current battery voltage in mV
1719
1720 (% _msthash="506119" _msttexthash="813891" %)
1721 AT+CFG:  Print all configurations
1722
1723 (% _msthash="506120" _msttexthash="551707" %)
1724 AT+WMOD:  Get or Set Work Mode
1725
1726 (% _msthash="506121" _msttexthash="2631499" %)
1727 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1728
1729 (% _msthash="506122" _msttexthash="3907150" %)
1730 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1731
1732 (% _msthash="506123" _msttexthash="854620" %)
1733 AT+SETCNT:  Set the count at present
1734
1735 (% _msthash="506124" _msttexthash="2554877" %)
1736 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1737
1738 (% _msthash="506125" _msttexthash="771849" %)
1739 AT+RPL:  Get or set response level
1740
1741 (% _msthash="506126" _msttexthash="1484314" %)
1742 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1743
1744 (% _msthash="506127" _msttexthash="741728" %)
1745 AT+LEAPSEC:  Get or Set Leap Second
1746
1747 (% _msthash="506128" _msttexthash="1694017" %)
1748 AT+SYNCMOD:  Get or Set time synchronization method
1749
1750 (% _msthash="506129" _msttexthash="2235948" %)
1751 AT+SYNCTDC:  Get or set time synchronization interval in day
1752
1753 (% _msthash="506130" _msttexthash="425542" %)
1754 AT+PID:  Get or set the PID
1755
1756
1757
1758 == 6.2 Where to use AT commands and Downlink commands ==
1759
1760
1761 **AT commands：**
1762
1763 [[image:image-20220620153708-1.png||height="603" width="723"]]
1764
1765
1766 **Downlink commands:**
1767
1768
1769
1770 (% style="color:blue" %)**TTN:**
1771
1772 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1773
1774
1775
1776 (% style="color:blue" %)**Helium：**
1777
1778 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1779
1780
1781
1782 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1783
1784
1785 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1786
1787
1788 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1789
1790
1791
1792 (% style="color:blue" %)**Aws:**
1793
1794 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1795
1796
1797
1798 == 6.3 How to change the uplink interval？ ==
1799
1800
1801 [[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"]]
1802
1803
1804
1805 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1806
1807
1808 [[image:image-20220615153355-1.png]]
1809
1810 [[image:1655802313617-381.png]]
1811
1812
1813 (((
1814 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.
1815 )))
1816
1817
1818 Input password and ATZ to activate LHT65N,As shown below:
1819
1820 [[image:image-20220615154519-3.png||height="672" width="807"]]
1821
1822
1823
1824 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1825
1826
1827 [[image:image-20220615153355-1.png]]
1828
1829
1830 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1831
1832 [[image:image-20220615170542-5.png]]
1833
1834
1835 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1836
1837 (% _msthash="506146" _msttexthash="52173160" %)
1838 First connect the four lines；(% style="display:none" %)
1839
1840 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1841
1842
1843 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1844
1845 [[image:image-20220621170938-2.png]]
1846
1847
1848 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1849
1850 [[image:image-20220615171334-6.png]]
1851
1852
1853 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1854
1855
1856 When this interface appears, it indicates that the download has been completed.
1857
1858 [[image:image-20220620160723-8.png]]
1859
1860
1861 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1862
1863
1864
1865 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1866
1867
1868 [[image:image-20220623110706-1.png]]
1869
1870
1871 [[image:image-20220623112117-4.png||height="459" width="343"]]
1872
1873
1874 (((
1875 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.
1876 )))
1877
1878
1879 Input password and ATZ to activate LHT65N,As shown below:
1880
1881 [[image:image-20220615154519-3.png||height="672" width="807"]]
1882
1883
1884
1885 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1886
1887
1888 [[image:image-20220623110706-1.png]]
1889
1890
1891 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1892
1893 [[image:image-20220615170542-5.png]]
1894
1895
1896 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1897
1898 (% _msthash="506146" _msttexthash="52173160" %)
1899 First connect the four lines；
1900
1901 (% _msthash="506146" _msttexthash="52173160" %)
1902 [[image:image-20220623113959-5.png||height="528" width="397"]]
1903
1904 (% _msthash="506146" _msttexthash="52173160" %)
1905 Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
1906
1907
1908 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1909
1910 [[image:image-20220615171334-6.png]]
1911
1912
1913 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1914
1915
1916 When this interface appears, it indicates that the download has been completed.
1917
1918 [[image:image-20220620160723-8.png]]
1919
1920
1921 Finally,restart reset device again
1922
1923
1924
1925 = 7. Order Info =
1926
1927
1928 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
1929
1930 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1931
1932 (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1933
1934 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1935
1936 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1937
1938 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1939
1940 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1941
1942 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1943
1944 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1945
1946 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1947
1948 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1949
1950 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1951
1952
1953
1954 = 8. Packing Info =
1955
1956
1957 **Package Includes**:
1958
1959 * LHT65N Temperature & Humidity Sensor x 1
1960 * Optional external sensor
1961
1962 **Dimension and weight**:
1963
1964 * Device Size:  10 x 10 x 3.5 cm
1965 * Device Weight: 120.5g
1966
1967
1968
1969 = 9. Reference material =
1970
1971
1972 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1973
1974
1975
1976 = 10. FCC Warning =
1977
1978
1979 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1980
1981 (1) This device may not cause harmful interference；
1982
1983 (2) this device must accept any interference received, including interference that may cause undesired operation.

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