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Version 189.7 by Xiaoling on 2022/07/22 11:10
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9 (% _msthash="315238" _msttexthash="18964465" _mstvisible="3" %)**Table of Contents：**
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11 {{toc/}}
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15
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 * Wall mountable
50 * LoRaWAN v1.0.3 Class A protocol
51 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
52 * AT Commands to change parameters
53 * Remote configure parameters via LoRaWAN Downlink
54 * Firmware upgradeable via program port
55 * Built-in 2400mAh battery for up to 10 years of use.
56 * Built-in Temperature & Humidity sensor
57 * Optional External Sensors
58 * Tri-color LED to indicate working status
59 * Datalog feature
60
61
62
63 == 1.3 Specification ==
64
65
66 **Built-in Temperature Sensor:**
67
68 * Resolution: 0.01 °C
69 * Accuracy Tolerance : Typ ±0.3 °C
70 * Long Term Drift: < 0.02 °C/yr
71 * Operating Range: -40 ~~ 85 °C
72
73 **Built-in Humidity Sensor:**
74
75 * Resolution: 0.04 %RH
76 * Accuracy Tolerance : Typ ±3 %RH
77 * Long Term Drift: < 0.02 °C/yr
78 * Operating Range: 0 ~~ 96 %RH
79
80 **External Temperature Sensor:**
81
82 * Resolution: 0.0625 °C
83 * ±0.5°C accuracy from -10°C to +85°C
84 * ±2°C accuracy from -55°C to +125°C
85 * Operating Range: -55 °C ~~ 125 °C
86
87
88
89 = 2. Connect LHT65N to IoT Server =
90
91 == 2.1 How does LHT65N work? ==
92
93 (((
94 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.
95 )))
96
97 (((
98 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.
99 )))
100
101
102 == 2.2 How to Activate LHT65N? ==
103
104 (((
105 The LHT65N has two working modes:
106 )))
107
108 * (((
109 (% 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.
110 )))
111 * (((
112 (% 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. 
113 )))
114
115 (((
116 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
117 )))
118
119
120 [[image:image-20220515123819-1.png||_mstalt="430742" _mstvisible="3" height="379" width="317"]]
121
122 [[image:image-20220525110604-2.png||_mstalt="427531" _mstvisible="3"]]
123
124
125
126 == 2.3 Example to join LoRaWAN network ==
127
128 (% _msthash="315240" _msttexthash="9205482" _mstvisible="1" class="wikigeneratedid" %)
129 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.
130
131 (% _mstvisible="1" class="wikigeneratedid" %)
132 [[image:image-20220522232442-1.png||_mstalt="427830" _mstvisible="3" height="387" width="648"]]
133
134
135 (((
136 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:
137 )))
138
139
140
141 === 2.3.1 Step 1: Create Device n TTN ===
142
143 (((
144 Create a device in TTN V3 with the OTAA keys from LHT65N.
145 )))
146
147 (((
148 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
149 )))
150
151 [[image:image-20220617150003-1.jpeg]]
152
153 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
154
155 Add APP EUI in the application.
156
157
158 [[image:image-20220522232916-3.png||_mstalt="430495" _mstvisible="3"]]
159
160
161 [[image:image-20220522232932-4.png||_mstalt="430157" _mstvisible="3"]]
162
163
164 [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
165
166
167
168 (% style="color:red" %)**Note: LHT65N use same payload as LHT65.**
169
170
171 [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
172
173
174 Input APP EUI,  APP KEY and DEV EUI:
175
176
177 [[image:image-20220522233118-7.png||_mstalt="430430" _mstvisible="3"]]
178
179
180
181
182 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
183
184 (((
185 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.
186 )))
187
188 [[image:image-20220522233300-8.png||_mstalt="428389" _mstvisible="3" height="219" width="722"]]
189
190
191
192
193 == 2.4 Uplink Payload ==
194
195 (((
196 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.
197 )))
198
199 (((
200 After each uplink, the (% _mstvisible="3" style="color:blue" %)**BLUE LED**(%%) will blink once.
201 )))
202
203 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:426px" %)
204 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 97px;" %)(% _mstvisible="5" %)
205 (((
206 (% _mstvisible="6" %)
207 (% _msthash="1817478" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
208 )))|=(% _mstvisible="4" style="width: 39px;" %)(% _mstvisible="5" %)
209 (((
210 (% _mstvisible="6" %)
211 (% _msthash="1817479" _msttexthash="4550" _mstvisible="8" %)**2**
212 )))|=(% _mstvisible="4" style="width: 100px;" %)(% _mstvisible="5" %)
213 (((
214 (% _mstvisible="6" %)
215 (% _msthash="1817480" _msttexthash="4550" _mstvisible="8" %)**2**
216 )))|=(% _mstvisible="4" style="width: 77px;" %)(% _mstvisible="5" %)
217 (((
218 (% _mstvisible="6" %)
219 (% _msthash="1817481" _msttexthash="4550" _mstvisible="8" %)**2**
220 )))|=(% _mstvisible="4" style="width: 47px;" %)(% _mstvisible="5" %)
221 (((
222 (% _mstvisible="6" %)
223 (% _msthash="1817482" _msttexthash="4459" _mstvisible="8" %)**1**
224 )))|=(% _mstvisible="4" style="width: 51px;" %)(% _mstvisible="5" %)
225 (((
226 (% _mstvisible="6" %)
227 (% _msthash="1817483" _msttexthash="4732" _mstvisible="8" %)**4**
228 )))
229 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:97px" %)(% _mstvisible="5" %)
230 (((
231 (% _mstvisible="6" %)
232 (% _msthash="1817484" _msttexthash="60203" _mstvisible="8" %)**Value**
233 )))|(% _mstvisible="4" style="width:39px" %)(% _mstvisible="5" %)
234 (((
235 (% _mstvisible="6" %)
236 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo" _msthash="1817485" _msttexthash="22594" _mstvisible="7"]]
237 )))|(% _mstvisible="4" style="width:100px" %)(% _mstvisible="5" %)
238 (((
239 (% _mstvisible="6" %)
240 (((
241 (% _mstvisible="7" %)
242 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224742" _msttexthash="405769" _mstvisible="8"]]
243 )))
244 )))|(% _mstvisible="4" style="width:77px" %)(% _mstvisible="5" %)
245 (((
246 (% _mstvisible="6" %)
247 (((
248 (% _mstvisible="7" %)
249 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2224743" _msttexthash="105872" _mstvisible="8"]]
250 )))
251
252 (% _mstvisible="6" %)
253 (((
254 (% _mstvisible="7" %)
255 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224744" _msttexthash="117429" _mstvisible="8"]]
256 )))
257 )))|(% _mstvisible="4" style="width:47px" %)(% _mstvisible="5" %)
258 (((
259 (% _mstvisible="6" %)
260 [[Ext>>||anchor="H2.4.5Ext23" _msthash="1817486" _msttexthash="32331" _mstvisible="7"]] #
261 )))|(% _mstvisible="4" style="width:51px" %)(% _mstvisible="5" %)
262 (((
263 (% _mstvisible="6" %)
264 [[Ext value>>||anchor="H2.4.6Extvalue" _msthash="1817487" _msttexthash="116545" _mstvisible="7"]]
265 )))
266
267 * The First 6 bytes: has fix meanings for every LHT65N.
268 * The 7th byte (EXT #): defines the external sensor model.
269 * 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.)
270
271
272
273 === 2.4.1 Decoder in TTN V3 ===
274
275 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.
276
277 Below is the position to put the decoder and LHT65N decoder can be download from here:
278
279
280 [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0 >>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0||_msthash="315253" _msttexthash="3509064" _mstvisible="2"]]
281
282
283 [[image:image-20220522234118-10.png||_mstalt="451464" _mstvisible="3" height="353" width="729"]]
284
285
286
287
288 === 2.4.2 BAT-Battery Info ===
289
290 These two bytes of BAT include the battery state and the actually voltage
291
292 [[image:image-20220523152839-18.png||_mstalt="457613" _mstvisible="3"]]
293
294
295 [[image:image-20220522235639-1.png||_mstalt="431392" _mstvisible="3" height="139" width="727"]]
296
297
298 Check the battery voltage for LHT65N.
299
300 * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
301 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
302
303
304
305 === 2.4.3 Built-in Temperature ===
306
307 [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
308
309 * Temperature:  0x0ABB/100=27.47℃
310
311 [[image:image-20220522235639-3.png||_mstalt="432120" _mstvisible="3"]]
312
313 * Temperature:  (0xF5C6-65536)/100=-26.18℃
314
315
316
317 === 2.4.4 Built-in Humidity ===
318
319 [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
320
321 * Humidity:    0x025C/10=60.4%
322
323
324
325 === 2.4.5 Ext # ===
326
327 Bytes for External Sensor:
328
329 [[image:image-20220523152822-17.png||_mstalt="454545" _mstvisible="3"]]
330
331
332
333 === 2.4.6 Ext value ===
334
335 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
336
337
338 [[image:image-20220522235639-5.png||_mstalt="432848" _mstvisible="3"]]
339
340
341 * DS18B20 temp=0x0ADD/100=27.81℃
342
343 The last 2 bytes of data are meaningless
344
345 [[image:image-20220522235639-6.png||_mstalt="433212" _mstvisible="3"]]
346
347
348 * External temperature= (0xF54F-65536)/100=-27.37℃
349
350 The last 2 bytes of data are meaningless
351
352 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
353
354
355
356 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
357
358 (((
359 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:
360 )))
361
362 (((
363
364 )))
365
366 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
367 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 96px;" %)(% _mstvisible="5" %)
368 (((
369 (% _mstvisible="6" %)
370 (% _msthash="1817488" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
371 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
372 (((
373 (% _mstvisible="6" %)
374 (% _msthash="1817489" _msttexthash="4550" _mstvisible="8" %)**2**
375 )))|=(% _mstvisible="4" style="width: 99px;" %)(% _mstvisible="5" %)
376 (((
377 (% _mstvisible="6" %)
378 (% _msthash="1817490" _msttexthash="4550" _mstvisible="8" %)**2**
379 )))|=(% _mstvisible="4" style="width: 132px;" %)(% _mstvisible="5" %)
380 (((
381 (% _mstvisible="6" %)
382 (% _msthash="1817491" _msttexthash="4550" _mstvisible="8" %)**2**
383 )))|=(% _mstvisible="4" style="width: 54px;" %)(% _mstvisible="5" %)
384 (((
385 (% _mstvisible="6" %)
386 (% _msthash="1817492" _msttexthash="4459" _mstvisible="8" %)**1**
387 )))|=(% _mstvisible="4" style="width: 64px;" %)(% _mstvisible="5" %)
388 (((
389 (% _mstvisible="6" %)
390 (% _msthash="1817493" _msttexthash="4732" _mstvisible="8" %)**4**
391 )))
392 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:96px" %)(% _mstvisible="5" %)
393 (((
394 (% _mstvisible="6" %)
395 (% _msthash="1817494" _msttexthash="60203" _mstvisible="8" %)**Value**
396 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
397 (((
398 (% _mstvisible="6" %)
399 [[External temperature>>||anchor="H4.2SetExternalSensorMode" _msthash="1817495" _msttexthash="426517" _mstvisible="7"]]
400 )))|(% _mstvisible="4" style="width:99px" %)(% _mstvisible="5" %)
401 (((
402 (% _mstvisible="6" %)
403 (((
404 (% _mstvisible="7" %)
405 [[Built-In>>||anchor="H2.4.3Built-inTemperature" _msthash="2224745" _msttexthash="100464" _mstvisible="8"]]
406 )))
407
408 (% _mstvisible="6" %)
409 (((
410 (% _mstvisible="7" %)
411 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224746" _msttexthash="184041" _mstvisible="8"]]
412 )))
413 )))|(% _mstvisible="4" style="width:132px" %)(% _mstvisible="5" %)
414 (((
415 (% _mstvisible="6" %)
416 (((
417 (% _msthash="2224747" _msttexthash="136331" _mstvisible="7" %)
418 BAT Status &
419 )))
420
421 (% _mstvisible="6" %)
422 (((
423 (% _mstvisible="7" %)
424 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224748" _msttexthash="311181" _mstvisible="8"]]
425 )))
426 )))|(% _mstvisible="4" style="width:54px" %)(% _mstvisible="5" %)
427 (((
428 (% _msthash="1817496" _msttexthash="147225" _mstvisible="6" %)
429 Status & Ext
430 )))|(% _mstvisible="4" style="width:64px" %)(% _mstvisible="5" %)
431 (((
432 (% _mstvisible="6" %)
433 (((
434 (% _mstvisible="7" %)
435 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2224749" _msttexthash="227175" _mstvisible="8"]]
436 )))
437 )))
438
439 (% _mstvisible="1" %)
440 * (% _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**
441
442 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:469px" %)
443 (% _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]
444 (% _mstvisible="3" %)|(% _msthash="1230921" _msttexthash="60203" _mstvisible="4" style="width:65px" %)Value|(% _mstvisible="4" style="width:267px" %)(% _mstvisible="5" %)
445 (((
446 (% _msthash="1817497" _msttexthash="128427" _mstvisible="6" %)
447 BAT Status
448
449 (% _msthash="1817498" _msttexthash="472784" _mstvisible="6" %)
450 00(b): Ultra Low ( BAT <= 2.50v)
451
452 (% _msthash="1817499" _msttexthash="483678" _mstvisible="6" %)
453 01(b): Low  (2.50v <=BAT <= 2.55v)
454
455 (% _msthash="1817500" _msttexthash="440791" _mstvisible="6" %)
456 10(b): OK   (2.55v <= BAT <=2.65v)
457
458 (% _msthash="1817501" _msttexthash="334191" _mstvisible="6" %)
459 11(b): Good   (BAT >= 2.65v)
460 )))|(% _mstvisible="4" style="width:134px" %)(% _mstvisible="5" %)
461 (((
462 (% _mstvisible="6" %)
463 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="1817502" _msttexthash="311181" _mstvisible="7"]]
464
465 (% _mstvisible="6" %)
466
467 )))
468
469 * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
470
471 (% border="1" cellspacing="8" style="background-color:#ffffcc; color:green; width:520px" %)
472 |(% 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]**
473 |(% 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)
474
475 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
476 * (% 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.
477 * (% 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)
478
479
480
481
482 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
483
484 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
485
486 be used to power the external ADC sensor; user can control the power on time for this
487
488 sensor by setting:
489
490 AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)Time to power this sensor, from 0 ~~ 65535ms
491
492 For example:
493
494 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
495
496
497 Or use **downlink command A2** to set the same.
498
499 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
500
501 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.
502
503 [[image:image-20220628150112-1.png||height="241" width="285"]]
504
505
506 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
507
508 [[image:image-20220628150714-4.png]]
509
510
511 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.
512
513 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
514
515 [[image:image-20220628151005-5.png]]
516
517
518 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
519
520 [[image:image-20220628151056-6.png]]
521
522
523 3) Within range
524
525 [[image:image-20220628151143-7.png]]
526
527
528
529 == 2.5 Show data on Datacake ==
530
531 (((
532 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:
533 )))
534
535 (((
536
537 )))
538
539 (((
540 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
541 )))
542
543 (((
544 (% 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.
545 )))
546
547 (((
548
549 )))
550
551 (((
552 Add Datacake:
553 )))
554
555
556 [[image:image-20220523000825-7.png||_mstalt="429884" _mstvisible="3" height="262" width="583"]]
557
558
559
560 Select default key as Access Key:
561
562
563 [[image:image-20220523000825-8.png||_mstalt="430248" _mstvisible="3" height="453" width="406"]]
564
565
566 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/||_mstvisible="2"]]) , add LHT65 device.
567
568
569 [[image:image-20220523000825-9.png||_mstalt="430612" _mstvisible="3" height="366" width="392"]]
570
571
572 [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
573
574
575
576 == 2.6 Datalog Feature ==
577
578 (((
579 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.
580 )))
581
582
583
584 === 2.6.1 Ways to get datalog via LoRaWAN ===
585
586 There are two methods:
587
588 1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specifying time range.
589 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.
590
591 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
592
593 [[image:image-20220703111700-2.png||height="381" width="1119"]]
594
595
596 === 2.6.2 Unix TimeStamp ===
597
598
599 LHT65N uses Unix TimeStamp format based on
600
601
602 [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
603
604
605
606 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
607
608 Below is the converter example
609
610 [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
611
612 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
613
614
615
616 === 2.6.3 Set Device Time ===
617
618 (((
619 There are two ways to set device's time:
620 )))
621
622 (((
623 **~1. Through LoRaWAN MAC Command (Default settings)**
624 )))
625
626 (((
627 User need to set SYNCMOD=1 to enable sync time via MAC command.
628 )))
629
630 (((
631 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).
632 )))
633
634 (((
635 (% 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.
636 )))
637
638 (((
639
640 )))
641
642 (((
643 **2. Manually Set Time**
644 )))
645
646 (((
647 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
648 )))
649
650
651
652 === 2.6.4 Poll sensor value ===
653
654 User can poll sensor value based on timestamps from the server. Below is the downlink command.
655
656 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
657
658
659 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.
660
661 For example, downlink command **31 5FC5F350 5FC6 0160 05**
662
663 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
664
665 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
666
667
668
669 === 2.6.5 Datalog Uplink payload ===
670
671 (% _msthash="315267" _msttexthash="2245087" _mstvisible="1" %)
672 The Datalog poll reply uplink will use below payload format.
673
674 (% _mstvisible="1" %)
675 (((
676 (% _mstvisible="2" %)
677 (% _msthash="506080" _msttexthash="451581" _mstvisible="4" %)**Retrieval data payload**
678 )))
679
680 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
681 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 93px;" %)(% _mstvisible="5" %)
682 (((
683 (% _mstvisible="6" %)
684 (((
685 (% _mstvisible="7" %)
686 (% _msthash="2224750" _msttexthash="161122" _mstvisible="9" %)**Size(bytes)**
687 )))
688 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
689 (((
690 (% _mstvisible="6" %)
691 (((
692 (% _mstvisible="7" %)
693 (% _msthash="2224751" _msttexthash="4550" _mstvisible="9" %)**2**
694 )))
695 )))|=(% _mstvisible="4" style="width: 102px;" %)(% _mstvisible="5" %)
696 (((
697 (% _mstvisible="6" %)
698 (((
699 (% _mstvisible="7" %)
700 (% _msthash="2224752" _msttexthash="4550" _mstvisible="9" %)**2**
701 )))
702 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
703 (((
704 (% _mstvisible="6" %)
705 (((
706 (% _mstvisible="7" %)
707 (% _msthash="2224753" _msttexthash="4550" _mstvisible="9" %)**2**
708 )))
709 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
710 (((
711 (% _mstvisible="6" %)
712 (((
713 (% _mstvisible="7" %)
714 (% _msthash="2224754" _msttexthash="4459" _mstvisible="9" %)**1**
715 )))
716 )))|=(% _mstvisible="4" style="width: 48px;" %)(% _mstvisible="5" %)
717 (((
718 (% _mstvisible="6" %)
719 (((
720 (% _mstvisible="7" %)
721 (% _msthash="2224755" _msttexthash="4732" _mstvisible="9" %)**4**
722 )))
723 )))
724 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:93px" %)(% _mstvisible="5" %)
725 (((
726 (% _mstvisible="6" %)
727 (((
728 (% _mstvisible="7" %)
729 (% _msthash="2224756" _msttexthash="60203" _mstvisible="9" %)**Value**
730 )))
731 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
732 (((
733 (% _mstvisible="6" %)
734 (((
735 (% _mstvisible="7" %)
736 [[External sensor data>>||anchor="H2.4.6Extvalue" _msthash="2224757" _msttexthash="386672" _mstvisible="8"]]
737 )))
738 )))|(% _mstvisible="4" style="width:102px" %)(% _mstvisible="5" %)
739 (((
740 (% _mstvisible="6" %)
741 (((
742 (% _mstvisible="7" %)
743 (((
744 (% _mstvisible="8" %)
745 [[Built In>>||anchor="H2.4.3Built-inTemperature" _msthash="2671864" _msttexthash="91065" _mstvisible="9"]]
746 )))
747 )))
748
749 (% _mstvisible="6" %)
750 (((
751 (% _mstvisible="7" %)
752 (((
753 (% _mstvisible="8" %)
754 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2671865" _msttexthash="184041" _mstvisible="9"]]
755 )))
756 )))
757 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
758 (((
759 (% _mstvisible="6" %)
760 (((
761 (% _mstvisible="7" %)
762 (((
763 (% _mstvisible="8" %)
764 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2671866" _msttexthash="105872" _mstvisible="9"]]
765 )))
766 )))
767
768 (% _mstvisible="6" %)
769 (((
770 (% _mstvisible="7" %)
771 (((
772 (% _mstvisible="8" %)
773 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2671867" _msttexthash="117429" _mstvisible="9"]]
774 )))
775 )))
776 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
777 (((
778 (% _mstvisible="6" %)
779 (((
780 (% _msthash="2224758" _msttexthash="390390" _mstvisible="7" %)
781 Poll message flag & Ext
782 )))
783 )))|(% _mstvisible="4" style="width:48px" %)(% _mstvisible="5" %)
784 (((
785 (% _mstvisible="6" %)
786 (((
787 (% _mstvisible="7" %)
788 (((
789 (% _mstvisible="8" %)
790 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2671868" _msttexthash="227175" _mstvisible="9"]]
791 )))
792 )))
793
794 (% _mstvisible="6" %)
795 (((
796 (% _mstvisible="7" %)
797 (((
798 (% _mstvisible="8" %)
799
800 )))
801 )))
802 )))
803
804 (% _mstvisible="1" %)
805 (% _msthash="315268" _msttexthash="390390" _mstvisible="3" %)**Poll message flag & Ext**
806
807 (% _mstvisible="1" %)
808 [[image:image-20220523152208-14.png||_mstalt="452920" _mstvisible="3"]]
809
810 (% _mstvisible="1" %)
811 (((
812 (% _mstvisible="2" %)
813 (((
814 (% _msthash="736723" _msttexthash="2005003" _mstvisible="3" %)
815 (((
816 Poll Message Flag: 1: This message is a poll message reply.
817 )))
818 )))
819 )))
820
821 (% _mstvisible="1" %)
822 * (% _mstvisible="3" %)
823 (((
824 (% _mstvisible="4" %)
825 (((
826 (% _msthash="1197157" _msttexthash="561548" _mstvisible="5" %)
827 (((
828 Poll Message Flag is set to 1.
829 )))
830 )))
831 )))
832 * (% _mstvisible="3" %)
833 (((
834 (% _mstvisible="4" %)
835 (((
836 (% _msthash="1197158" _msttexthash="9284964" _mstvisible="5" %)
837 (((
838 Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
839 )))
840 )))
841 )))
842
843 (% _mstvisible="1" %)
844 (((
845 (% _mstvisible="2" %)
846 (((
847 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
848 (((
849
850 )))
851
852 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
853 (((
854 For example, in US915 band, the max payload for different DR is:
855 )))
856 )))
857 )))
858
859 (% _mstvisible="1" %)
860 (((
861 (% _mstvisible="2" %)
862 (((
863 (% _msthash="736725" _msttexthash="1065532" _mstvisible="3" %)
864 (((
865 a) DR0: max is 11 bytes so one entry of data
866 )))
867 )))
868 )))
869
870 (% _mstvisible="1" %)
871 (((
872 (% _mstvisible="2" %)
873 (((
874 (% _msthash="736726" _msttexthash="3265665" _mstvisible="3" %)
875 (((
876 b) DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
877 )))
878 )))
879 )))
880
881 (% _mstvisible="1" %)
882 (((
883 (% _mstvisible="2" %)
884 (((
885 (% _msthash="736727" _msttexthash="1454115" _mstvisible="3" style="text-align: left;" %)
886 (((
887 c) DR2: total payload includes 11 entries of data
888 )))
889 )))
890 )))
891
892 (% _mstvisible="1" %)
893 (((
894 (% _mstvisible="2" %)
895 (((
896 (% _msthash="736728" _msttexthash="1483924" _mstvisible="3" style="text-align: left;" %)
897 (((
898 d) DR3: total payload includes 22 entries of data.
899 )))
900 )))
901 )))
902
903 (% _mstvisible="1" %)
904 (((
905 (% _mstvisible="2" %)
906 (((
907 (% _msthash="736729" _msttexthash="5848349" _mstvisible="3" style="text-align: left;" %)
908 (((
909 If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0   
910 )))
911 )))
912 )))
913
914
915 (% _mstvisible="1" style="text-align: left;" %)
916 (% _msthash="315269" _msttexthash="104767" _mstvisible="3" %)**Example:**
917
918 (% _msthash="315270" _msttexthash="913822" _mstvisible="1" style="text-align: left;" %)
919 If LHT65N has below data inside Flash:
920
921 (% _mstvisible="1" %)
922 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
923
924 (% _mstvisible="1" %)
925 (((
926 (% _msthash="506081" _msttexthash="1663961" _mstvisible="2" style="text-align: left;" %)
927 If user sends below downlink command: (% _mstvisible="3" style="background-color:yellow" %)3160065F9760066DA705
928 )))
929
930 (% _mstvisible="1" %)
931 (((
932 (% _msthash="506082" _msttexthash="1092494" _mstvisible="2" style="text-align: left;" %)
933 Where : Start time: 60065F97 = time 21/1/19 04:27:03
934 )))
935
936 (% _mstvisible="1" %)
937 (((
938 (% _msthash="506083" _msttexthash="737269" _mstvisible="2" style="text-align: left;" %)
939 Stop time 60066DA7= time 21/1/19 05:27:(% _msthash="903005" _msttexthash="9672" _mstvisible="2" %)03
940 )))
941
942 (% _mstvisible="1" %)
943 (((
944 (% _mstvisible="2" %)
945
946 )))
947
948 (% _mstvisible="1" %)
949 (((
950 (% _msthash="506084" _msttexthash="751218" _mstvisible="2" style="text-align: left;" %)
951 LHT65N will uplink this payload.
952 )))
953
954 (% _mstvisible="1" %)
955 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
956
957 (% _msthash="315271" _msttexthash="12012546" _mstvisible="1" style="text-align: left;" %)
958 (((
959 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
960 )))
961
962 (% _msthash="315237" _msttexthash="1385839" %)
963 (((
964 Where the first 11 bytes is for the first entry:
965 )))
966
967 (% _msthash="315238" _msttexthash="274846" %)
968 (((
969 7FFF089801464160065F97
970 )))
971
972 (% _msthash="315239" _msttexthash="617435" %)
973 (((
974 Ext sensor data=0x7FFF/100=327.67
975 )))
976
977 (% _msthash="315240" _msttexthash="270543" %)
978 (((
979 Temp=0x0898/100=22.00
980 )))
981
982 (% _msthash="315241" _msttexthash="211783" %)
983 (((
984 Hum=0x0146/10=32.6
985 )))
986
987 (% _msthash="315242" _msttexthash="1569776" %)
988 (((
989 poll message flag & Ext=0x41,means reply data,Ext=1
990 )))
991
992 (% _msthash="315243" _msttexthash="1120509" %)
993 (((
994 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
995 )))
996
997
998
999 == 2.7 Alarm Mode ==
1000
1001 (((
1002 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.
1003 )))
1004
1005 (((
1006 (% style="color:red" %)Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.
1007 )))
1008
1009 (((
1010 **AT COMMAND FOR ALARM MODE:**
1011 )))
1012
1013 (% _mstvisible="1" class="box infomessage" %)
1014 (((
1015 (((
1016 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled)
1017 )))
1018
1019 (((
1020 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1021 )))
1022
1023 (((
1024 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1025 )))
1026
1027 (((
1028 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
1029 )))
1030
1031 (((
1032 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1033 )))
1034 )))
1035
1036 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1037
1038 Total bytes: 8 bytes
1039
1040 **Example:**AA0100010001003C
1041
1042 WMOD=01
1043
1044 CITEMP=0001
1045
1046 TEMPlow=0001
1047
1048 TEMPhigh=003C
1049
1050
1051 == 2.8 LED Indicator ==
1052
1053 The LHT65 has a triple color LED which for easy showing different stage .
1054
1055 While user press ACT button, the LED will work as per LED status with ACT button.
1056
1057 In a normal working state:
1058
1059 * For each uplink, the BLUE LED or RED LED will blink once.
1060 BLUE LED when external sensor is connected.
1061 * RED LED when external sensor is not connected
1062 * For each success downlink, the PURPLE LED will blink once
1063
1064
1065
1066 == 2.9 installation ==
1067
1068 (% _mstvisible="1" %)
1069 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
1070
1071
1072
1073 = 3. Sensors and Accessories =
1074
1075 == 3.1 E2 Extension Cable ==
1076
1077 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1078
1079 **1m long breakout cable for LHT65N. Features:**
1080
1081 * (((
1082 Use for AT Command， works for both LHT52/LHT65N
1083 )))
1084 * (((
1085 Update firmware for LHT65N, works for both LHT52/LHT65N
1086 )))
1087 * (((
1088 Supports ADC mode to monitor external ADC
1089 )))
1090 * (((
1091 Supports Interrupt mode
1092 )))
1093 * (((
1094 Exposed All pins from the LHT65N Type-C connector.
1095 )))
1096
1097 [[image:image-20220619092421-3.png||height="371" width="529"]]
1098
1099
1100
1101
1102 == 3.2 E3 Temperature Probe ==
1103
1104
1105 [[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"]]
1106
1107
1108 Temperature sensor with 2 meters cable long
1109
1110 * Resolution: 0.0625 °C
1111 * ±0.5°C accuracy from -10°C to +85°C
1112 * ±2°C accuracy from -55°C to +125°C
1113 * Operating Range: -40 ~~ 125 °C
1114 * Working voltage 2.35v ~~ 5v
1115
1116
1117
1118 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1119
1120 (((
1121 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1122 )))
1123
1124 * (((
1125 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1126 )))
1127
1128 * (((
1129 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1130 )))
1131
1132 (((
1133 There are two kinds of commands to configure LHT65N, they are:
1134 )))
1135
1136 * (((
1137 (% style="color:#4f81bd" %)**General Commands**.
1138 )))
1139
1140 (((
1141 These commands are to configure:
1142 )))
1143
1144 1. (((
1145 General system settings like: uplink interval.
1146 )))
1147 1. (((
1148 LoRaWAN protocol & radio-related commands.
1149 )))
1150
1151 (((
1152 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]]
1153 )))
1154
1155 * (((
1156 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1157 )))
1158
1159 (((
1160 These commands are only valid for LHT65N, as below:
1161 )))
1162
1163
1164 == 4.1 Set Transmit Interval Time ==
1165
1166 Feature: Change LoRaWAN End Node Transmit Interval.
1167
1168 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1169
1170 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
1171
1172
1173 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1174
1175 Format: Command Code (0x01) followed by 3 bytes time value.
1176
1177 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1178
1179 * **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1180
1181 * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1182
1183
1184
1185 == 4.2 Set External Sensor Mode ==
1186
1187 Feature: Change External Sensor Mode.
1188
1189 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1190
1191 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1192
1193
1194 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1195
1196 Total bytes: 2 ~~ 5 bytes
1197
1198 **Example:**
1199
1200 * 0xA201: Set external sensor type to E1
1201
1202 * 0xA209: Same as AT+EXT=9
1203
1204 * 0xA20702003c: Same as AT+SETCNT=60
1205
1206
1207
1208 == 4.3 Enable/Disable uplink Temperature probe ID ==
1209
1210 (((
1211 Feature: If PID is enabled, device will send the temperature probe ID on:
1212 )))
1213
1214 * (((
1215 First Packet after OTAA Join
1216 )))
1217 * (((
1218 Every 24 hours since the first packet.
1219 )))
1220
1221 (((
1222 PID is default set to disable (0)
1223 )))
1224
1225 (% style="color:#4f81bd" %)**AT Command:**
1226
1227 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1228
1229
1230 (% style="color:#4f81bd" %)**Downlink Command:**
1231
1232 * **0xA800**  **~-~->** AT+PID=0
1233 * **0xA801**     **~-~->** AT+PID=1
1234
1235
1236
1237 == 4.4 Set Password ==
1238
1239 Feature: Set device password, max 9 digits
1240
1241 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1242
1243 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1244
1245
1246 (% style="color:#4f81bd" %)**Downlink Command:**
1247
1248 No downlink command for this feature.
1249
1250
1251
1252 == 4.5 Quit AT Command ==
1253
1254 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1255
1256 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1257
1258 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1259
1260
1261 (% style="color:#4f81bd" %)**Downlink Command:**
1262
1263 No downlink command for this feature.
1264
1265
1266
1267 == 4.6 Set to sleep mode ==
1268
1269 Feature: Set device to sleep mode
1270
1271 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1272 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1273
1274 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1275
1276 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1277
1278
1279 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1280
1281 * There is no downlink command to set to Sleep mode.
1282
1283
1284
1285 == 4.7 Set system time ==
1286
1287 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1288
1289 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1290
1291 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1292
1293
1294 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1295
1296 0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1297
1298
1299
1300 == 4.8 Set Time Sync Mode ==
1301
1302 (((
1303 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1304 )))
1305
1306 (((
1307 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.
1308 )))
1309
1310 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1311
1312 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1313
1314
1315 (% style="color:#4f81bd" %)**Downlink Command:**
1316
1317 0x28 01 ~/~/ Same As AT+SYNCMOD=1
1318 0x28 00 ~/~/ Same As AT+SYNCMOD=0
1319
1320
1321
1322 == 4.9 Set Time Sync Interval ==
1323
1324 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1325
1326 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1327
1328 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1329
1330
1331 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1332
1333 **0x29 0A** ~/~/ Same as AT+SYNCTDC=0x0A
1334
1335
1336
1337 == 4.10 Print data entries base on page. ==
1338
1339 Feature: Print the sector data from start page to stop page (max is 416 pages).
1340
1341 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1342
1343 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1344
1345
1346 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1347
1348 No downlink commands for feature
1349
1350
1351
1352 == 4.11 Print last few data entries. ==
1353
1354 Feature: Print the last few data entries
1355
1356 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1357
1358 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1359
1360
1361 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1362
1363 No downlink commands for feature
1364
1365
1366
1367 == 4.12 Clear Flash Record ==
1368
1369 Feature: Clear flash storage for data log feature.
1370
1371
1372 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1373
1374 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1375
1376
1377 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1378
1379 * Example: 0xA301 ~/~/Same as AT+CLRDTA
1380
1381
1382
1383 == 4.13 Auto Send None-ACK messages ==
1384
1385 (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
1386 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.
1387
1388 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1389
1390 (% _msthash="315396" _msttexthash="734682" _mstvisible="1" %)
1391 The default factory setting is 0
1392
1393 (% _mstvisible="1" border="1" style="background-color:#ffffcc; color:green; width:450px" %)
1394 (% _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**
1395 (% _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
1396
1397 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1398
1399 * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1400
1401
1402
1403 = 5. Battery & How to replace =
1404
1405 == 5.1 Battery Type ==
1406
1407 (((
1408 (((
1409 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.
1410 )))
1411 )))
1412
1413 (((
1414
1415 )))
1416
1417 (((
1418 (((
1419 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1420 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1421 )))
1422 )))
1423
1424 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1425
1426
1427 == 5.2 Replace Battery ==
1428
1429 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.
1430
1431 [[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"]]
1432
1433
1434 == 5.3 Battery Life Analyze ==
1435
1436 (((
1437 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:
1438 [[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]]
1439 )))
1440
1441 (((
1442
1443 )))
1444
1445 (((
1446 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]]
1447 )))
1448
1449
1450
1451 = 6. FAQ =
1452
1453 == 6.1 How to use AT Command? ==
1454
1455 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.
1456
1457 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1458
1459
1460 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1461
1462 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1463 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1464 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1465 * (% style="background-color:yellow" %)**USB to TTL 3.3V <~-~-> D-**
1466
1467 (((
1468 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.
1469 )))
1470
1471
1472 Input password and ATZ to activate LHT65N,As shown below:
1473
1474 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1475
1476
1477 (% _msthash="506066" _msttexthash="544869" %)
1478 AT Command List is as below:
1479
1480 (% _msthash="506067" _msttexthash="361920" %)
1481 AT+<CMD>? :  Help on <CMD>
1482
1483 (% _msthash="506068" _msttexthash="243061" %)
1484 AT+<CMD> :  Run <CMD>
1485
1486 (% _msthash="506069" _msttexthash="704197" %)
1487 AT+<CMD>=<value> :  Set the value
1488
1489 (% _msthash="506070" _msttexthash="455676" %)
1490 AT+<CMD>=? :  Get the value
1491
1492 (% _msthash="506071" _msttexthash="670553" %)
1493 AT+DEBUG:  Set more info output
1494
1495 (% _msthash="506072" _msttexthash="485888" %)
1496 ATZ:  Trig a reset of the MCU
1497
1498 (% _msthash="506073" _msttexthash="2068872" %)
1499 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1500
1501 (% _msthash="506074" _msttexthash="689169" %)
1502 AT+DEUI:  Get or Set the Device EUI
1503
1504 (% _msthash="506075" _msttexthash="960414" %)
1505 AT+DADDR:  Get or Set the Device Address
1506
1507 (% _msthash="506076" _msttexthash="1079897" %)
1508 AT+APPKEY:  Get or Set the Application Key
1509
1510 (% _msthash="506077" _msttexthash="1326143" %)
1511 AT+NWKSKEY:  Get or Set the Network Session Key
1512
1513 (% _msthash="506078" _msttexthash="1573000" %)
1514 AT+APPSKEY:  Get or Set the Application Session Key
1515
1516 (% _msthash="506079" _msttexthash="1041729" %)
1517 AT+APPEUI:  Get or Set the Application EUI
1518
1519 (% _msthash="506080" _msttexthash="2104206" %)
1520 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1521
1522 (% _msthash="506081" _msttexthash="3369288" %)
1523 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1524
1525 (% _msthash="506082" _msttexthash="1894529" %)
1526 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1527
1528 (% _msthash="506083" _msttexthash="3864172" %)
1529 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1530
1531 (% _msthash="506084" _msttexthash="1712204" %)
1532 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1533
1534 (% _msthash="506085" _msttexthash="1281202" %)
1535 AT+RX2FQ:  Get or Set the Rx2 window frequency
1536
1537 (% _msthash="506086" _msttexthash="2796781" %)
1538 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1539
1540 (% _msthash="506087" _msttexthash="3285165" %)
1541 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1542
1543 (% _msthash="506088" _msttexthash="3286179" %)
1544 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1545
1546 (% _msthash="506089" _msttexthash="4703803" %)
1547 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1548
1549 (% _msthash="506090" _msttexthash="4704999" %)
1550 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1551
1552 (% _msthash="506091" _msttexthash="1528683" %)
1553 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1554
1555 (% _msthash="506092" _msttexthash="757185" %)
1556 AT+NWKID:  Get or Set the Network ID
1557
1558 (% _msthash="506093" _msttexthash="1156597" %)
1559 AT+FCU:  Get or Set the Frame Counter Uplink
1560
1561 (% _msthash="506094" _msttexthash="1273987" %)
1562 AT+FCD:  Get or Set the Frame Counter Downlink
1563
1564 (% _msthash="506095" _msttexthash="859222" %)
1565 AT+CLASS:  Get or Set the Device Class
1566
1567 (% _msthash="506096" _msttexthash="384852" %)
1568 AT+JOIN:  Join network
1569
1570 (% _msthash="506097" _msttexthash="548626" %)
1571 AT+NJS:  Get the join status
1572
1573 (% _msthash="506098" _msttexthash="2546206" %)
1574 AT+SENDB:  Send hexadecimal data along with the application port
1575
1576 (% _msthash="506099" _msttexthash="1932307" %)
1577 AT+SEND:  Send text data along with the application port
1578
1579 (% _msthash="506100" _msttexthash="3560557" %)
1580 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1581
1582 (% _msthash="506101" _msttexthash="1429701" %)
1583 AT+RECV:  Print last received data in raw format
1584
1585 (% _msthash="506102" _msttexthash="1735981" %)
1586 AT+VER:  Get current image version and Frequency Band
1587
1588 (% _msthash="506103" _msttexthash="1189474" %)
1589 AT+CFM:  Get or Set the confirmation mode (0-1)
1590
1591 (% _msthash="506104" _msttexthash="1718210" %)
1592 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1593
1594 (% _msthash="506105" _msttexthash="1339403" %)
1595 AT+SNR:  Get the SNR of the last received packet
1596
1597 (% _msthash="506106" _msttexthash="1452009" %)
1598 AT+RSSI:  Get the RSSI of the last received packet
1599
1600 (% _msthash="506107" _msttexthash="2768142" %)
1601 AT+TDC:  Get or set the application data transmission interval in ms
1602
1603 (% _msthash="506108" _msttexthash="1083914" %)
1604 AT+PORT:  Get or set the application port
1605
1606 (% _msthash="506109" _msttexthash="622440" %)
1607 AT+DISAT:  Disable AT commands
1608
1609 (% _msthash="506110" _msttexthash="868361" %)
1610 AT+PWORD: Set password, max 9 digits
1611
1612 (% _msthash="506111" _msttexthash="2210299" %)
1613 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1614
1615 (% _msthash="506112" _msttexthash="2113462" %)
1616 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1617
1618 (% _msthash="506113" _msttexthash="2087423" %)
1619 AT+PDTA:  Print the sector data from start page to stop page
1620
1621 (% _msthash="506114" _msttexthash="1063127" %)
1622 AT+PLDTA:  Print the last few sets of data
1623
1624 (% _msthash="506115" _msttexthash="1999426" %)
1625 AT+CLRDTA:  Clear the storage, record position back to 1st
1626
1627 (% _msthash="506116" _msttexthash="442130" %)
1628 AT+SLEEP:  Set sleep mode
1629
1630 (% _msthash="506117" _msttexthash="1080222" %)
1631 AT+EXT:  Get or Set external sensor model
1632
1633 (% _msthash="506118" _msttexthash="1309490" %)
1634 AT+BAT:  Get the current battery voltage in mV
1635
1636 (% _msthash="506119" _msttexthash="813891" %)
1637 AT+CFG:  Print all configurations
1638
1639 (% _msthash="506120" _msttexthash="551707" %)
1640 AT+WMOD:  Get or Set Work Mode
1641
1642 (% _msthash="506121" _msttexthash="2631499" %)
1643 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1644
1645 (% _msthash="506122" _msttexthash="3907150" %)
1646 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1647
1648 (% _msthash="506123" _msttexthash="854620" %)
1649 AT+SETCNT:  Set the count at present
1650
1651 (% _msthash="506124" _msttexthash="2554877" %)
1652 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1653
1654 (% _msthash="506125" _msttexthash="771849" %)
1655 AT+RPL:  Get or set response level
1656
1657 (% _msthash="506126" _msttexthash="1484314" %)
1658 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1659
1660 (% _msthash="506127" _msttexthash="741728" %)
1661 AT+LEAPSEC:  Get or Set Leap Second
1662
1663 (% _msthash="506128" _msttexthash="1694017" %)
1664 AT+SYNCMOD:  Get or Set time synchronization method
1665
1666 (% _msthash="506129" _msttexthash="2235948" %)
1667 AT+SYNCTDC:  Get or set time synchronization interval in day
1668
1669 (% _msthash="506130" _msttexthash="425542" %)
1670 AT+PID:  Get or set the PID
1671
1672
1673 == 6.2 Where to use AT commands and Downlink commands ==
1674
1675 (% _msthash="506131" _msttexthash="14585714" %)
1676 AT commands：
1677
1678 [[image:image-20220620153708-1.png||height="603" width="723"]]
1679
1680 (% _msthash="506132" _msttexthash="337922" %)
1681 Downlink commands:
1682
1683
1684 (% _msthash="506133" _msttexthash="33046" %)
1685 **TTN:**
1686
1687 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1688
1689
1690 (% _msthash="506134" _msttexthash="11113791" %)
1691 **Helium：**
1692
1693 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1694
1695
1696 (% _msthash="506135" _msttexthash="4159844" %)
1697 **Chirpstack:The downlink window will not be displayed until the network is accessed**
1698
1699 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1700
1701 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1702
1703
1704 (% _msthash="506136" _msttexthash="39286" %)
1705 **Aws:**
1706
1707 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1708
1709
1710
1711 == 6.3 How to change the uplink interval？ ==
1712
1713 [[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"]]
1714
1715
1716
1717 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1718
1719 [[image:image-20220615153355-1.png]]
1720
1721 [[image:1655802313617-381.png]]
1722
1723
1724 (((
1725 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.
1726 )))
1727
1728
1729 Input password and ATZ to activate LHT65N,As shown below:
1730
1731 [[image:image-20220615154519-3.png||height="672" width="807"]]
1732
1733
1734
1735 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1736
1737
1738 [[image:image-20220615153355-1.png]]
1739
1740
1741 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1742
1743 [[image:image-20220615170542-5.png]]
1744
1745
1746 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1747
1748 (% _msthash="506146" _msttexthash="52173160" %)
1749 First connect the four lines；(% style="display:none" %)
1750
1751 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1752
1753
1754 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1755
1756 [[image:image-20220621170938-2.png]]
1757
1758
1759 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1760
1761 [[image:image-20220615171334-6.png]]
1762
1763
1764 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1765
1766
1767 When this interface appears, it indicates that the download has been completed.
1768
1769 [[image:image-20220620160723-8.png]]
1770
1771
1772 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1773
1774
1775 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1776
1777 [[image:image-20220623110706-1.png]]
1778
1779
1780 [[image:image-20220623112117-4.png||height="459" width="343"]]
1781
1782 (((
1783 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.
1784 )))
1785
1786
1787 Input password and ATZ to activate LHT65N,As shown below:
1788
1789 [[image:image-20220615154519-3.png||height="672" width="807"]]
1790
1791
1792 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1793
1794 [[image:image-20220623110706-1.png]]
1795
1796 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1797
1798 [[image:image-20220615170542-5.png]]
1799
1800
1801 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1802
1803 (% _msthash="506146" _msttexthash="52173160" %)
1804 First connect the four lines；
1805
1806 (% _msthash="506146" _msttexthash="52173160" %)
1807 [[image:image-20220623113959-5.png||height="528" width="397"]]
1808
1809 (% _msthash="506146" _msttexthash="52173160" %)
1810 Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
1811
1812 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1813
1814 [[image:image-20220615171334-6.png]]
1815
1816
1817 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1818
1819
1820 When this interface appears, it indicates that the download has been completed.
1821
1822 [[image:image-20220620160723-8.png]]
1823
1824
1825 Finally,restart reset device again
1826
1827
1828 = 7. Order Info =
1829
1830
1831 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
1832
1833 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1834
1835 (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1836
1837 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1838
1839 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1840
1841 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1842
1843 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1844
1845 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1846
1847 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1848
1849 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1850
1851 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1852
1853 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1854
1855
1856
1857 = 8. Packing Info =
1858
1859
1860 **Package Includes**:
1861
1862 * LHT65N Temperature & Humidity Sensor x 1
1863 * Optional external sensor
1864
1865 **Dimension and weight**:
1866
1867 * Device Size:  10 x 10 x 3.5 cm
1868 * Device Weight: 120.5g
1869
1870
1871
1872 = 9. Reference material =
1873
1874 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1875
1876
1877
1878 = 10. FCC Warning =
1879
1880 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1881
1882 (1) This device may not cause harmful interference；
1883
1884 (2) this device must accept any interference received, including interference that may cause undesired operation.