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Version 189.9 by Xiaoling on 2022/08/08 16:38
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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
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 == 1.3 Specification ==
65
66
67 **Built-in Temperature Sensor:**
68
69 * Resolution: 0.01 °C
70 * Accuracy Tolerance : Typ ±0.3 °C
71 * Long Term Drift: < 0.02 °C/yr
72 * Operating Range: -40 ~~ 85 °C
73
74
75
76 **Built-in Humidity Sensor:**
77
78 * Resolution: 0.04 %RH
79 * Accuracy Tolerance : Typ ±3 %RH
80 * Long Term Drift: < 0.02 °C/yr
81 * Operating Range: 0 ~~ 96 %RH
82
83
84
85 **External Temperature Sensor:**
86
87 * Resolution: 0.0625 °C
88 * ±0.5°C accuracy from -10°C to +85°C
89 * ±2°C accuracy from -55°C to +125°C
90 * Operating Range: -55 °C ~~ 125 °C
91
92
93
94 = 2. Connect LHT65N to IoT Server =
95
96 == 2.1 How does LHT65N work? ==
97
98
99 (((
100 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.
101 )))
102
103 (((
104 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.
105 )))
106
107
108
109 == 2.2 How to Activate LHT65N? ==
110
111
112 (((
113 The LHT65N has two working modes:
114 )))
115
116 * (((
117 (% 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.
118 )))
119 * (((
120 (% 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. 
121 )))
122
123 (((
124 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
125 )))
126
127
128 [[image:image-20220515123819-1.png||_mstalt="430742" _mstvisible="3" height="379" width="317"]]
129
130 [[image:image-20220525110604-2.png||_mstalt="427531" _mstvisible="3"]]
131
132
133
134 == 2.3 Example to join LoRaWAN network ==
135
136
137 (% _msthash="315240" _msttexthash="9205482" _mstvisible="1" class="wikigeneratedid" %)
138 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.
139
140 (% _mstvisible="1" class="wikigeneratedid" %)
141 [[image:image-20220522232442-1.png||_mstalt="427830" _mstvisible="3" height="387" width="648"]]
142
143
144 (((
145 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:
146 )))
147
148
149
150 === 2.3.1 Step 1: Create Device n TTN ===
151
152
153 (((
154 Create a device in TTN V3 with the OTAA keys from LHT65N.
155 )))
156
157 (((
158 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
159 )))
160
161 [[image:image-20220617150003-1.jpeg]]
162
163 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
164
165 Add APP EUI in the application.
166
167
168 [[image:image-20220522232916-3.png||_mstalt="430495" _mstvisible="3"]]
169
170
171 [[image:image-20220522232932-4.png||_mstalt="430157" _mstvisible="3"]]
172
173
174 [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
175
176
177
178 (% style="color:red" %)**Note: LHT65N use same payload as LHT65.**
179
180
181 [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
182
183
184 Input APP EUI,  APP KEY and DEV EUI:
185
186
187 [[image:image-20220522233118-7.png||_mstalt="430430" _mstvisible="3"]]
188
189
190
191
192 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
193
194
195 (((
196 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.
197 )))
198
199 [[image:image-20220522233300-8.png||_mstalt="428389" _mstvisible="3" height="219" width="722"]]
200
201
202
203
204 == 2.4 Uplink Payload ==
205
206
207 (((
208 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.
209 )))
210
211 (((
212 After each uplink, the (% _mstvisible="3" style="color:blue" %)**BLUE LED**(%%) will blink once.
213 )))
214
215 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:426px" %)
216 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 97px;" %)(% _mstvisible="5" %)
217 (((
218 (% _mstvisible="6" %)
219 (% _msthash="1817478" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
220 )))|=(% _mstvisible="4" style="width: 39px;" %)(% _mstvisible="5" %)
221 (((
222 (% _mstvisible="6" %)
223 (% _msthash="1817479" _msttexthash="4550" _mstvisible="8" %)**2**
224 )))|=(% _mstvisible="4" style="width: 100px;" %)(% _mstvisible="5" %)
225 (((
226 (% _mstvisible="6" %)
227 (% _msthash="1817480" _msttexthash="4550" _mstvisible="8" %)**2**
228 )))|=(% _mstvisible="4" style="width: 77px;" %)(% _mstvisible="5" %)
229 (((
230 (% _mstvisible="6" %)
231 (% _msthash="1817481" _msttexthash="4550" _mstvisible="8" %)**2**
232 )))|=(% _mstvisible="4" style="width: 47px;" %)(% _mstvisible="5" %)
233 (((
234 (% _mstvisible="6" %)
235 (% _msthash="1817482" _msttexthash="4459" _mstvisible="8" %)**1**
236 )))|=(% _mstvisible="4" style="width: 51px;" %)(% _mstvisible="5" %)
237 (((
238 (% _mstvisible="6" %)
239 (% _msthash="1817483" _msttexthash="4732" _mstvisible="8" %)**4**
240 )))
241 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:97px" %)(% _mstvisible="5" %)
242 (((
243 (% _mstvisible="6" %)
244 (% _msthash="1817484" _msttexthash="60203" _mstvisible="8" %)**Value**
245 )))|(% _mstvisible="4" style="width:39px" %)(% _mstvisible="5" %)
246 (((
247 (% _mstvisible="6" %)
248 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo" _msthash="1817485" _msttexthash="22594" _mstvisible="7"]]
249 )))|(% _mstvisible="4" style="width:100px" %)(% _mstvisible="5" %)
250 (((
251 (% _mstvisible="6" %)
252 (((
253 (% _mstvisible="7" %)
254 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224742" _msttexthash="405769" _mstvisible="8"]]
255 )))
256 )))|(% _mstvisible="4" style="width:77px" %)(% _mstvisible="5" %)
257 (((
258 (% _mstvisible="6" %)
259 (((
260 (% _mstvisible="7" %)
261 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2224743" _msttexthash="105872" _mstvisible="8"]]
262 )))
263
264 (% _mstvisible="6" %)
265 (((
266 (% _mstvisible="7" %)
267 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224744" _msttexthash="117429" _mstvisible="8"]]
268 )))
269 )))|(% _mstvisible="4" style="width:47px" %)(% _mstvisible="5" %)
270 (((
271 (% _mstvisible="6" %)
272 [[Ext>>||anchor="H2.4.5Ext23" _msthash="1817486" _msttexthash="32331" _mstvisible="7"]] #
273 )))|(% _mstvisible="4" style="width:51px" %)(% _mstvisible="5" %)
274 (((
275 (% _mstvisible="6" %)
276 [[Ext value>>||anchor="H2.4.6Extvalue" _msthash="1817487" _msttexthash="116545" _mstvisible="7"]]
277 )))
278
279 * The First 6 bytes: has fix meanings for every LHT65N.
280 * The 7th byte (EXT #): defines the external sensor model.
281 * 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.)
282
283
284
285 === 2.4.1 Decoder in TTN V3 ===
286
287
288 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.
289
290 Below is the position to put the decoder and LHT65N decoder can be download from here:
291
292
293 [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0 >>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0||_msthash="315253" _msttexthash="3509064" _mstvisible="2"]]
294
295
296 [[image:image-20220522234118-10.png||_mstalt="451464" _mstvisible="3" height="353" width="729"]]
297
298
299
300
301 === 2.4.2 BAT-Battery Info ===
302
303
304 These two bytes of BAT include the battery state and the actually voltage
305
306 [[image:image-20220523152839-18.png||_mstalt="457613" _mstvisible="3"]]
307
308
309 [[image:image-20220522235639-1.png||_mstalt="431392" _mstvisible="3" height="139" width="727"]]
310
311
312 Check the battery voltage for LHT65N.
313
314 * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
315 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
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 === 2.4.4 Built-in Humidity ===
333
334
335 [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
336
337 * Humidity:    0x025C/10=60.4%
338
339
340
341 === 2.4.5 Ext # ===
342
343
344 Bytes for External Sensor:
345
346 [[image:image-20220523152822-17.png||_mstalt="454545" _mstvisible="3"]]
347
348
349
350 === 2.4.6 Ext value ===
351
352 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
353
354
355 [[image:image-20220522235639-5.png||_mstalt="432848" _mstvisible="3"]]
356
357
358 * DS18B20 temp=0x0ADD/100=27.81℃
359
360 The last 2 bytes of data are meaningless
361
362 [[image:image-20220522235639-6.png||_mstalt="433212" _mstvisible="3"]]
363
364
365 * External temperature= (0xF54F-65536)/100=-27.37℃
366
367 The last 2 bytes of data are meaningless
368
369 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
370
371
372
373 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
374
375
376 (((
377 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:
378 )))
379
380 (((
381
382 )))
383
384 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
385 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 96px;" %)(% _mstvisible="5" %)
386 (((
387 (% _mstvisible="6" %)
388 (% _msthash="1817488" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
389 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
390 (((
391 (% _mstvisible="6" %)
392 (% _msthash="1817489" _msttexthash="4550" _mstvisible="8" %)**2**
393 )))|=(% _mstvisible="4" style="width: 99px;" %)(% _mstvisible="5" %)
394 (((
395 (% _mstvisible="6" %)
396 (% _msthash="1817490" _msttexthash="4550" _mstvisible="8" %)**2**
397 )))|=(% _mstvisible="4" style="width: 132px;" %)(% _mstvisible="5" %)
398 (((
399 (% _mstvisible="6" %)
400 (% _msthash="1817491" _msttexthash="4550" _mstvisible="8" %)**2**
401 )))|=(% _mstvisible="4" style="width: 54px;" %)(% _mstvisible="5" %)
402 (((
403 (% _mstvisible="6" %)
404 (% _msthash="1817492" _msttexthash="4459" _mstvisible="8" %)**1**
405 )))|=(% _mstvisible="4" style="width: 64px;" %)(% _mstvisible="5" %)
406 (((
407 (% _mstvisible="6" %)
408 (% _msthash="1817493" _msttexthash="4732" _mstvisible="8" %)**4**
409 )))
410 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:96px" %)(% _mstvisible="5" %)
411 (((
412 (% _mstvisible="6" %)
413 (% _msthash="1817494" _msttexthash="60203" _mstvisible="8" %)**Value**
414 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
415 (((
416 (% _mstvisible="6" %)
417 [[External temperature>>||anchor="H4.2SetExternalSensorMode" _msthash="1817495" _msttexthash="426517" _mstvisible="7"]]
418 )))|(% _mstvisible="4" style="width:99px" %)(% _mstvisible="5" %)
419 (((
420 (% _mstvisible="6" %)
421 (((
422 (% _mstvisible="7" %)
423 [[Built-In>>||anchor="H2.4.3Built-inTemperature" _msthash="2224745" _msttexthash="100464" _mstvisible="8"]]
424 )))
425
426 (% _mstvisible="6" %)
427 (((
428 (% _mstvisible="7" %)
429 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224746" _msttexthash="184041" _mstvisible="8"]]
430 )))
431 )))|(% _mstvisible="4" style="width:132px" %)(% _mstvisible="5" %)
432 (((
433 (% _mstvisible="6" %)
434 (((
435 (% _msthash="2224747" _msttexthash="136331" _mstvisible="7" %)
436 BAT Status &
437 )))
438
439 (% _mstvisible="6" %)
440 (((
441 (% _mstvisible="7" %)
442 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224748" _msttexthash="311181" _mstvisible="8"]]
443 )))
444 )))|(% _mstvisible="4" style="width:54px" %)(% _mstvisible="5" %)
445 (((
446 (% _msthash="1817496" _msttexthash="147225" _mstvisible="6" %)
447 Status & Ext
448 )))|(% _mstvisible="4" style="width:64px" %)(% _mstvisible="5" %)
449 (((
450 (% _mstvisible="6" %)
451 (((
452 (% _mstvisible="7" %)
453 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2224749" _msttexthash="227175" _mstvisible="8"]]
454 )))
455 )))
456
457 (% _mstvisible="1" %)
458 * (% _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**
459
460 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:469px" %)
461 (% _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]
462 (% _mstvisible="3" %)|(% _msthash="1230921" _msttexthash="60203" _mstvisible="4" style="width:65px" %)Value|(% _mstvisible="4" style="width:267px" %)(% _mstvisible="5" %)
463 (((
464 (% _msthash="1817497" _msttexthash="128427" _mstvisible="6" %)
465 BAT Status
466
467 (% _msthash="1817498" _msttexthash="472784" _mstvisible="6" %)
468 00(b): Ultra Low ( BAT <= 2.50v)
469
470 (% _msthash="1817499" _msttexthash="483678" _mstvisible="6" %)
471 01(b): Low  (2.50v <=BAT <= 2.55v)
472
473 (% _msthash="1817500" _msttexthash="440791" _mstvisible="6" %)
474 10(b): OK   (2.55v <= BAT <=2.65v)
475
476 (% _msthash="1817501" _msttexthash="334191" _mstvisible="6" %)
477 11(b): Good   (BAT >= 2.65v)
478 )))|(% _mstvisible="4" style="width:134px" %)(% _mstvisible="5" %)
479 (((
480 (% _mstvisible="6" %)
481 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="1817502" _msttexthash="311181" _mstvisible="7"]]
482
483 (% _mstvisible="6" %)
484
485 )))
486
487 * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
488
489 (% border="1" cellspacing="8" style="background-color:#ffffcc; color:green; width:520px" %)
490 |(% 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]**
491 |(% 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)
492
493 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
494 * (% 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.
495 * (% 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)
496
497
498
499 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
500
501
502 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
503
504 be used to power the external ADC sensor; user can control the power on time for this
505
506 sensor by setting:
507
508 AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)Time to power this sensor, from 0 ~~ 65535ms
509
510 For example:
511
512 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
513
514
515 Or use **downlink command A2** to set the same.
516
517 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
518
519 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.
520
521 [[image:image-20220628150112-1.png||height="241" width="285"]]
522
523
524 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
525
526 [[image:image-20220628150714-4.png]]
527
528
529 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.
530
531 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
532
533 [[image:image-20220628151005-5.png]]
534
535
536 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
537
538 [[image:image-20220628151056-6.png]]
539
540
541 3) Within range
542
543 [[image:image-20220628151143-7.png]]
544
545
546
547 == 2.5 Show data on Datacake ==
548
549
550 (((
551 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:
552 )))
553
554 (((
555
556 )))
557
558 (((
559 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
560 )))
561
562 (((
563 (% 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.
564 )))
565
566 (((
567
568 )))
569
570 (((
571 Add Datacake:
572 )))
573
574
575 [[image:image-20220523000825-7.png||_mstalt="429884" _mstvisible="3" height="262" width="583"]]
576
577
578
579 Select default key as Access Key:
580
581
582 [[image:image-20220523000825-8.png||_mstalt="430248" _mstvisible="3" height="453" width="406"]]
583
584
585 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/||_mstvisible="2"]]) , add LHT65 device.
586
587
588 [[image:image-20220523000825-9.png||_mstalt="430612" _mstvisible="3" height="366" width="392"]]
589
590
591 [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
592
593
594
595 == 2.6 Datalog Feature ==
596
597
598 (((
599 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.
600 )))
601
602
603
604 === 2.6.1 Ways to get datalog via LoRaWAN ===
605
606
607 There are two methods:
608
609 1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specifying time range.
610 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.
611
612 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
613
614 [[image:image-20220703111700-2.png||height="381" width="1119"]]
615
616
617 === 2.6.2 Unix TimeStamp ===
618
619
620 LHT65N uses Unix TimeStamp format based on
621
622
623 [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
624
625
626
627 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
628
629 Below is the converter example
630
631 [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
632
633 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
634
635
636
637 === 2.6.3 Set Device Time ===
638
639
640 (((
641 There are two ways to set device's time:
642 )))
643
644 (((
645 **~1. Through LoRaWAN MAC Command (Default settings)**
646 )))
647
648 (((
649 User need to set SYNCMOD=1 to enable sync time via MAC command.
650 )))
651
652 (((
653 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).
654 )))
655
656 (((
657 (% 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.**
658 )))
659
660 (((
661
662 )))
663
664 (((
665 **2. Manually Set Time**
666 )))
667
668 (((
669 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
670 )))
671
672
673
674 === 2.6.4 Poll sensor value ===
675
676
677 User can poll sensor value based on timestamps from the server. Below is the downlink command.
678
679 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
680
681
682 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.
683
684 For example, downlink command **31 5FC5F350 5FC6 0160 05**
685
686 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
687
688 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
689
690
691
692 === 2.6.5 Datalog Uplink payload ===
693
694
695 (% _msthash="315267" _msttexthash="2245087" _mstvisible="1" %)
696 The Datalog poll reply uplink will use below payload format.
697
698 (% _mstvisible="1" %)
699 (((
700 (% _mstvisible="2" %)
701
702
703 (% _mstvisible="2" %)
704 (% _msthash="506080" _msttexthash="451581" _mstvisible="4" %)**Retrieval data payload**
705 )))
706
707 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
708 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 93px;" %)(% _mstvisible="5" %)
709 (((
710 (% _mstvisible="6" %)
711 (((
712 (% _mstvisible="7" %)
713 (% _msthash="2224750" _msttexthash="161122" _mstvisible="9" %)**Size(bytes)**
714 )))
715 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
716 (((
717 (% _mstvisible="6" %)
718 (((
719 (% _mstvisible="7" %)
720 (% _msthash="2224751" _msttexthash="4550" _mstvisible="9" %)**2**
721 )))
722 )))|=(% _mstvisible="4" style="width: 102px;" %)(% _mstvisible="5" %)
723 (((
724 (% _mstvisible="6" %)
725 (((
726 (% _mstvisible="7" %)
727 (% _msthash="2224752" _msttexthash="4550" _mstvisible="9" %)**2**
728 )))
729 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
730 (((
731 (% _mstvisible="6" %)
732 (((
733 (% _mstvisible="7" %)
734 (% _msthash="2224753" _msttexthash="4550" _mstvisible="9" %)**2**
735 )))
736 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
737 (((
738 (% _mstvisible="6" %)
739 (((
740 (% _mstvisible="7" %)
741 (% _msthash="2224754" _msttexthash="4459" _mstvisible="9" %)**1**
742 )))
743 )))|=(% _mstvisible="4" style="width: 48px;" %)(% _mstvisible="5" %)
744 (((
745 (% _mstvisible="6" %)
746 (((
747 (% _mstvisible="7" %)
748 (% _msthash="2224755" _msttexthash="4732" _mstvisible="9" %)**4**
749 )))
750 )))
751 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:93px" %)(% _mstvisible="5" %)
752 (((
753 (% _mstvisible="6" %)
754 (((
755 (% _mstvisible="7" %)
756 (% _msthash="2224756" _msttexthash="60203" _mstvisible="9" %)**Value**
757 )))
758 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
759 (((
760 (% _mstvisible="6" %)
761 (((
762 (% _mstvisible="7" %)
763 [[External sensor data>>||anchor="H2.4.6Extvalue" _msthash="2224757" _msttexthash="386672" _mstvisible="8"]]
764 )))
765 )))|(% _mstvisible="4" style="width:102px" %)(% _mstvisible="5" %)
766 (((
767 (% _mstvisible="6" %)
768 (((
769 (% _mstvisible="7" %)
770 (((
771 (% _mstvisible="8" %)
772 [[Built In>>||anchor="H2.4.3Built-inTemperature" _msthash="2671864" _msttexthash="91065" _mstvisible="9"]]
773 )))
774 )))
775
776 (% _mstvisible="6" %)
777 (((
778 (% _mstvisible="7" %)
779 (((
780 (% _mstvisible="8" %)
781 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2671865" _msttexthash="184041" _mstvisible="9"]]
782 )))
783 )))
784 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
785 (((
786 (% _mstvisible="6" %)
787 (((
788 (% _mstvisible="7" %)
789 (((
790 (% _mstvisible="8" %)
791 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2671866" _msttexthash="105872" _mstvisible="9"]]
792 )))
793 )))
794
795 (% _mstvisible="6" %)
796 (((
797 (% _mstvisible="7" %)
798 (((
799 (% _mstvisible="8" %)
800 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2671867" _msttexthash="117429" _mstvisible="9"]]
801 )))
802 )))
803 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
804 (((
805 (% _mstvisible="6" %)
806 (((
807 (% _msthash="2224758" _msttexthash="390390" _mstvisible="7" %)
808 Poll message flag & Ext
809 )))
810 )))|(% _mstvisible="4" style="width:48px" %)(% _mstvisible="5" %)
811 (((
812 (% _mstvisible="6" %)
813 (((
814 (% _mstvisible="7" %)
815 (((
816 (% _mstvisible="8" %)
817 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2671868" _msttexthash="227175" _mstvisible="9"]]
818 )))
819 )))
820
821 (% _mstvisible="6" %)
822 (((
823 (% _mstvisible="7" %)
824 (((
825 (% _mstvisible="8" %)
826
827 )))
828 )))
829 )))
830
831
832 (% _mstvisible="1" %)
833 (% _msthash="315268" _msttexthash="390390" _mstvisible="3" %)**Poll message flag & Ext**
834
835 (% _mstvisible="1" %)
836 [[image:image-20220523152208-14.png||_mstalt="452920" _mstvisible="3"]]
837
838 (% _mstvisible="1" %)
839 (((
840 (% _mstvisible="2" %)
841 (((
842 (% _msthash="736723" _msttexthash="2005003" _mstvisible="3" %)
843 (((
844 Poll Message Flag: 1: This message is a poll message reply.
845 )))
846 )))
847 )))
848
849 (% _mstvisible="1" %)
850 * (% _mstvisible="3" %)
851 (((
852 (% _mstvisible="4" %)
853 (((
854 (% _msthash="1197157" _msttexthash="561548" _mstvisible="5" %)
855 (((
856 Poll Message Flag is set to 1.
857 )))
858 )))
859 )))
860 * (% _mstvisible="3" %)
861 (((
862 (% _mstvisible="4" %)
863 (((
864 (% _msthash="1197158" _msttexthash="9284964" _mstvisible="5" %)
865 (((
866 Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
867 )))
868 )))
869 )))
870
871 (% _mstvisible="1" %)
872 (((
873 (% _mstvisible="2" %)
874 (((
875 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
876 (((
877
878 )))
879
880 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
881 (((
882 For example, in US915 band, the max payload for different DR is:
883 )))
884 )))
885 )))
886
887 (% _mstvisible="1" %)
888 (((
889 (% _mstvisible="2" %)
890 (((
891 (% _msthash="736725" _msttexthash="1065532" _mstvisible="3" %)
892 (((
893 a) DR0: max is 11 bytes so one entry of data
894 )))
895 )))
896 )))
897
898 (% _mstvisible="1" %)
899 (((
900 (% _mstvisible="2" %)
901 (((
902 (% _msthash="736726" _msttexthash="3265665" _mstvisible="3" %)
903 (((
904 b) DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
905 )))
906 )))
907 )))
908
909 (% _mstvisible="1" %)
910 (((
911 (% _mstvisible="2" %)
912 (((
913 (% _msthash="736727" _msttexthash="1454115" _mstvisible="3" style="text-align: left;" %)
914 (((
915 c) DR2: total payload includes 11 entries of data
916 )))
917 )))
918 )))
919
920 (% _mstvisible="1" %)
921 (((
922 (% _mstvisible="2" %)
923 (((
924 (% _msthash="736728" _msttexthash="1483924" _mstvisible="3" style="text-align: left;" %)
925 (((
926 d) DR3: total payload includes 22 entries of data.
927 )))
928 )))
929 )))
930
931 (% _mstvisible="1" %)
932 (((
933 (% _mstvisible="2" %)
934 (((
935 (% _msthash="736729" _msttexthash="5848349" _mstvisible="3" style="text-align: left;" %)
936 (((
937 If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0   
938 )))
939 )))
940 )))
941
942
943 (% _mstvisible="1" style="text-align: left;" %)
944 (% _msthash="315269" _msttexthash="104767" _mstvisible="3" %)**Example:**
945
946 (% _msthash="315270" _msttexthash="913822" _mstvisible="1" style="text-align: left;" %)
947 If LHT65N has below data inside Flash:
948
949 (% _mstvisible="1" %)
950 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
951
952 (% _mstvisible="1" %)
953 (((
954 (% _msthash="506081" _msttexthash="1663961" _mstvisible="2" style="text-align: left;" %)
955 If user sends below downlink command: (% _mstvisible="3" style="background-color:yellow" %)3160065F9760066DA705
956 )))
957
958 (% _mstvisible="1" %)
959 (((
960 (% _msthash="506082" _msttexthash="1092494" _mstvisible="2" style="text-align: left;" %)
961 Where : Start time: 60065F97 = time 21/1/19 04:27:03
962 )))
963
964 (% _mstvisible="1" %)
965 (((
966 (% _msthash="506083" _msttexthash="737269" _mstvisible="2" style="text-align: left;" %)
967 Stop time 60066DA7= time 21/1/19 05:27:(% _msthash="903005" _msttexthash="9672" _mstvisible="2" %)03
968 )))
969
970 (% _mstvisible="1" %)
971 (((
972 (% _mstvisible="2" %)
973
974 )))
975
976 (% _mstvisible="1" %)
977 (((
978 (% _msthash="506084" _msttexthash="751218" _mstvisible="2" style="text-align: left;" %)
979 LHT65N will uplink this payload.
980 )))
981
982 (% _mstvisible="1" %)
983 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
984
985 (% _msthash="315271" _msttexthash="12012546" _mstvisible="1" style="text-align: left;" %)
986 (((
987 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
988 )))
989
990 (% _msthash="315237" _msttexthash="1385839" %)
991 (((
992 Where the first 11 bytes is for the first entry:
993 )))
994
995 (% _msthash="315238" _msttexthash="274846" %)
996 (((
997 7FFF089801464160065F97
998 )))
999
1000 (% _msthash="315239" _msttexthash="617435" %)
1001 (((
1002 Ext sensor data=0x7FFF/100=327.67
1003 )))
1004
1005 (% _msthash="315240" _msttexthash="270543" %)
1006 (((
1007 Temp=0x0898/100=22.00
1008 )))
1009
1010 (% _msthash="315241" _msttexthash="211783" %)
1011 (((
1012 Hum=0x0146/10=32.6
1013 )))
1014
1015 (% _msthash="315242" _msttexthash="1569776" %)
1016 (((
1017 poll message flag & Ext=0x41,means reply data,Ext=1
1018 )))
1019
1020 (% _msthash="315243" _msttexthash="1120509" %)
1021 (((
1022 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
1023 )))
1024
1025
1026
1027 == 2.7 Alarm Mode ==
1028
1029
1030 (((
1031 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.
1032 )))
1033
1034 (((
1035 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
1036
1037
1038 )))
1039
1040 (((
1041 **AT COMMAND FOR ALARM MODE:**
1042 )))
1043
1044 (% _mstvisible="1" class="box infomessage" %)
1045 (((
1046 (((
1047 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled)
1048 )))
1049
1050 (((
1051 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1052 )))
1053
1054 (((
1055 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1056 )))
1057
1058 (((
1059 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
1060 )))
1061
1062 (((
1063 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1064 )))
1065 )))
1066
1067 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1068
1069 Total bytes: 8 bytes
1070
1071 **Example:**AA0100010001003C
1072
1073 WMOD=01
1074
1075 CITEMP=0001
1076
1077 TEMPlow=0001
1078
1079 TEMPhigh=003C
1080
1081
1082
1083 == 2.8 LED Indicator ==
1084
1085
1086 The LHT65 has a triple color LED which for easy showing different stage .
1087
1088 While user press ACT button, the LED will work as per LED status with ACT button.
1089
1090 In a normal working state:
1091
1092 * For each uplink, the BLUE LED or RED LED will blink once.
1093 BLUE LED when external sensor is connected.
1094 * RED LED when external sensor is not connected
1095 * For each success downlink, the PURPLE LED will blink once
1096
1097
1098
1099 == 2.9 installation ==
1100
1101
1102 (% _mstvisible="1" %)
1103 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
1104
1105
1106
1107 = 3. Sensors and Accessories =
1108
1109 == 3.1 E2 Extension Cable ==
1110
1111
1112 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1113
1114
1115 **1m long breakout cable for LHT65N. Features:**
1116
1117 * (((
1118 Use for AT Command， works for both LHT52/LHT65N
1119 )))
1120 * (((
1121 Update firmware for LHT65N, works for both LHT52/LHT65N
1122 )))
1123 * (((
1124 Supports ADC mode to monitor external ADC
1125 )))
1126 * (((
1127 Supports Interrupt mode
1128 )))
1129 * (((
1130 Exposed All pins from the LHT65N Type-C connector.
1131
1132
1133
1134 )))
1135
1136 [[image:image-20220619092421-3.png||height="371" width="529"]]
1137
1138
1139
1140
1141 == 3.2 E3 Temperature Probe ==
1142
1143
1144 [[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"]]
1145
1146
1147 Temperature sensor with 2 meters cable long
1148
1149 * Resolution: 0.0625 °C
1150 * ±0.5°C accuracy from -10°C to +85°C
1151 * ±2°C accuracy from -55°C to +125°C
1152 * Operating Range: -40 ~~ 125 °C
1153 * Working voltage 2.35v ~~ 5v
1154
1155
1156
1157 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1158
1159
1160 (((
1161 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1162 )))
1163
1164 * (((
1165 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1166 )))
1167
1168 * (((
1169 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1170 )))
1171
1172 (((
1173 There are two kinds of commands to configure LHT65N, they are:
1174 )))
1175
1176 * (((
1177 (% style="color:#4f81bd" %)**General Commands**.
1178 )))
1179
1180 (((
1181 These commands are to configure:
1182 )))
1183
1184 1. (((
1185 General system settings like: uplink interval.
1186 )))
1187 1. (((
1188 LoRaWAN protocol & radio-related commands.
1189 )))
1190
1191 (((
1192 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]]
1193 )))
1194
1195 * (((
1196 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1197 )))
1198
1199 (((
1200 These commands are only valid for LHT65N, as below:
1201 )))
1202
1203
1204
1205 == 4.1 Set Transmit Interval Time ==
1206
1207
1208 Feature: Change LoRaWAN End Node Transmit Interval.
1209
1210
1211 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1212
1213 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
1214
1215
1216 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1217
1218 Format: Command Code (0x01) followed by 3 bytes time value.
1219
1220 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1221
1222 * **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1223
1224 * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1225
1226
1227
1228 == 4.2 Set External Sensor Mode ==
1229
1230
1231 Feature: Change External Sensor Mode.
1232
1233
1234 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1235
1236 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1237
1238
1239 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1240
1241 Total bytes: 2 ~~ 5 bytes
1242
1243 **Example:**
1244
1245 * 0xA201: Set external sensor type to E1
1246
1247 * 0xA209: Same as AT+EXT=9
1248
1249 * 0xA20702003c: Same as AT+SETCNT=60
1250
1251
1252
1253 == 4.3 Enable/Disable uplink Temperature probe ID ==
1254
1255
1256 (((
1257 Feature: If PID is enabled, device will send the temperature probe ID on:
1258 )))
1259
1260 * (((
1261 First Packet after OTAA Join
1262 )))
1263 * (((
1264 Every 24 hours since the first packet.
1265 )))
1266
1267 (((
1268 PID is default set to disable (0)
1269
1270
1271 )))
1272
1273 (% style="color:#4f81bd" %)**AT Command:**
1274
1275 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1276
1277
1278 (% style="color:#4f81bd" %)**Downlink Command:**
1279
1280 * **0xA800**  **~-~->** AT+PID=0
1281 * **0xA801**     **~-~->** AT+PID=1
1282
1283
1284
1285 == 4.4 Set Password ==
1286
1287
1288 Feature: Set device password, max 9 digits
1289
1290
1291 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1292
1293 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1294
1295
1296 (% style="color:#4f81bd" %)**Downlink Command:**
1297
1298 No downlink command for this feature.
1299
1300
1301
1302 == 4.5 Quit AT Command ==
1303
1304
1305 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1306
1307
1308 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1309
1310 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1311
1312
1313 (% style="color:#4f81bd" %)**Downlink Command:**
1314
1315 No downlink command for this feature.
1316
1317
1318
1319 == 4.6 Set to sleep mode ==
1320
1321
1322 Feature: Set device to sleep mode
1323
1324 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1325 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1326
1327
1328
1329 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1330
1331 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1332
1333
1334 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1335
1336 * There is no downlink command to set to Sleep mode.
1337
1338
1339
1340 == 4.7 Set system time ==
1341
1342
1343 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1344
1345
1346 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1347
1348 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1349
1350
1351 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1352
1353 0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1354
1355
1356
1357 == 4.8 Set Time Sync Mode ==
1358
1359
1360 (((
1361 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1362 )))
1363
1364 (((
1365 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.
1366
1367
1368 )))
1369
1370 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1371
1372 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1373
1374
1375 (% style="color:#4f81bd" %)**Downlink Command:**
1376
1377 0x28 01 ~/~/ Same As AT+SYNCMOD=1
1378 0x28 00 ~/~/ Same As AT+SYNCMOD=0
1379
1380
1381
1382 == 4.9 Set Time Sync Interval ==
1383
1384
1385 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1386
1387
1388 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1389
1390 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1391
1392
1393 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1394
1395 **0x29 0A** ~/~/ Same as AT+SYNCTDC=0x0A
1396
1397
1398
1399 == 4.10 Print data entries base on page. ==
1400
1401
1402 Feature: Print the sector data from start page to stop page (max is 416 pages).
1403
1404
1405 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1406
1407 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1408
1409
1410 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1411
1412 No downlink commands for feature
1413
1414
1415
1416 == 4.11 Print last few data entries. ==
1417
1418 Feature: Print the last few data entries
1419
1420 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1421
1422 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1423
1424
1425 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1426
1427 No downlink commands for feature
1428
1429
1430
1431 == 4.12 Clear Flash Record ==
1432
1433 Feature: Clear flash storage for data log feature.
1434
1435
1436 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1437
1438 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1439
1440
1441 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1442
1443 * Example: 0xA301 ~/~/Same as AT+CLRDTA
1444
1445
1446 == 4.13 Auto Send None-ACK messages ==
1447
1448 (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
1449 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.
1450
1451 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1452
1453 (% _msthash="315396" _msttexthash="734682" _mstvisible="1" %)
1454 The default factory setting is 0
1455
1456 (% _mstvisible="1" border="1" style="background-color:#ffffcc; color:green; width:450px" %)
1457 (% _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**
1458 (% _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
1459
1460 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1461
1462 * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1463
1464
1465 = 5. Battery & How to replace =
1466
1467 == 5.1 Battery Type ==
1468
1469 (((
1470 (((
1471 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.
1472 )))
1473 )))
1474
1475 (((
1476
1477 )))
1478
1479 (((
1480 (((
1481 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1482 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1483 )))
1484 )))
1485
1486 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1487
1488
1489 == 5.2 Replace Battery ==
1490
1491 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.
1492
1493 [[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"]]
1494
1495
1496 == 5.3 Battery Life Analyze ==
1497
1498 (((
1499 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:
1500 [[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]]
1501 )))
1502
1503 (((
1504
1505 )))
1506
1507 (((
1508 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]]
1509 )))
1510
1511
1512
1513 = 6. FAQ =
1514
1515 == 6.1 How to use AT Command? ==
1516
1517 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.
1518
1519 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1520
1521
1522 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1523
1524 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1525 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1526 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1527 * (% style="background-color:yellow" %)**USB to TTL 3.3V <~-~-> D-**
1528
1529 (((
1530 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.
1531 )))
1532
1533
1534 Input password and ATZ to activate LHT65N,As shown below:
1535
1536 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1537
1538
1539 (% _msthash="506066" _msttexthash="544869" %)
1540 AT Command List is as below:
1541
1542 (% _msthash="506067" _msttexthash="361920" %)
1543 AT+<CMD>? :  Help on <CMD>
1544
1545 (% _msthash="506068" _msttexthash="243061" %)
1546 AT+<CMD> :  Run <CMD>
1547
1548 (% _msthash="506069" _msttexthash="704197" %)
1549 AT+<CMD>=<value> :  Set the value
1550
1551 (% _msthash="506070" _msttexthash="455676" %)
1552 AT+<CMD>=? :  Get the value
1553
1554 (% _msthash="506071" _msttexthash="670553" %)
1555 AT+DEBUG:  Set more info output
1556
1557 (% _msthash="506072" _msttexthash="485888" %)
1558 ATZ:  Trig a reset of the MCU
1559
1560 (% _msthash="506073" _msttexthash="2068872" %)
1561 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1562
1563 (% _msthash="506074" _msttexthash="689169" %)
1564 AT+DEUI:  Get or Set the Device EUI
1565
1566 (% _msthash="506075" _msttexthash="960414" %)
1567 AT+DADDR:  Get or Set the Device Address
1568
1569 (% _msthash="506076" _msttexthash="1079897" %)
1570 AT+APPKEY:  Get or Set the Application Key
1571
1572 (% _msthash="506077" _msttexthash="1326143" %)
1573 AT+NWKSKEY:  Get or Set the Network Session Key
1574
1575 (% _msthash="506078" _msttexthash="1573000" %)
1576 AT+APPSKEY:  Get or Set the Application Session Key
1577
1578 (% _msthash="506079" _msttexthash="1041729" %)
1579 AT+APPEUI:  Get or Set the Application EUI
1580
1581 (% _msthash="506080" _msttexthash="2104206" %)
1582 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1583
1584 (% _msthash="506081" _msttexthash="3369288" %)
1585 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1586
1587 (% _msthash="506082" _msttexthash="1894529" %)
1588 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1589
1590 (% _msthash="506083" _msttexthash="3864172" %)
1591 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1592
1593 (% _msthash="506084" _msttexthash="1712204" %)
1594 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1595
1596 (% _msthash="506085" _msttexthash="1281202" %)
1597 AT+RX2FQ:  Get or Set the Rx2 window frequency
1598
1599 (% _msthash="506086" _msttexthash="2796781" %)
1600 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1601
1602 (% _msthash="506087" _msttexthash="3285165" %)
1603 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1604
1605 (% _msthash="506088" _msttexthash="3286179" %)
1606 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1607
1608 (% _msthash="506089" _msttexthash="4703803" %)
1609 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1610
1611 (% _msthash="506090" _msttexthash="4704999" %)
1612 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1613
1614 (% _msthash="506091" _msttexthash="1528683" %)
1615 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1616
1617 (% _msthash="506092" _msttexthash="757185" %)
1618 AT+NWKID:  Get or Set the Network ID
1619
1620 (% _msthash="506093" _msttexthash="1156597" %)
1621 AT+FCU:  Get or Set the Frame Counter Uplink
1622
1623 (% _msthash="506094" _msttexthash="1273987" %)
1624 AT+FCD:  Get or Set the Frame Counter Downlink
1625
1626 (% _msthash="506095" _msttexthash="859222" %)
1627 AT+CLASS:  Get or Set the Device Class
1628
1629 (% _msthash="506096" _msttexthash="384852" %)
1630 AT+JOIN:  Join network
1631
1632 (% _msthash="506097" _msttexthash="548626" %)
1633 AT+NJS:  Get the join status
1634
1635 (% _msthash="506098" _msttexthash="2546206" %)
1636 AT+SENDB:  Send hexadecimal data along with the application port
1637
1638 (% _msthash="506099" _msttexthash="1932307" %)
1639 AT+SEND:  Send text data along with the application port
1640
1641 (% _msthash="506100" _msttexthash="3560557" %)
1642 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1643
1644 (% _msthash="506101" _msttexthash="1429701" %)
1645 AT+RECV:  Print last received data in raw format
1646
1647 (% _msthash="506102" _msttexthash="1735981" %)
1648 AT+VER:  Get current image version and Frequency Band
1649
1650 (% _msthash="506103" _msttexthash="1189474" %)
1651 AT+CFM:  Get or Set the confirmation mode (0-1)
1652
1653 (% _msthash="506104" _msttexthash="1718210" %)
1654 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1655
1656 (% _msthash="506105" _msttexthash="1339403" %)
1657 AT+SNR:  Get the SNR of the last received packet
1658
1659 (% _msthash="506106" _msttexthash="1452009" %)
1660 AT+RSSI:  Get the RSSI of the last received packet
1661
1662 (% _msthash="506107" _msttexthash="2768142" %)
1663 AT+TDC:  Get or set the application data transmission interval in ms
1664
1665 (% _msthash="506108" _msttexthash="1083914" %)
1666 AT+PORT:  Get or set the application port
1667
1668 (% _msthash="506109" _msttexthash="622440" %)
1669 AT+DISAT:  Disable AT commands
1670
1671 (% _msthash="506110" _msttexthash="868361" %)
1672 AT+PWORD: Set password, max 9 digits
1673
1674 (% _msthash="506111" _msttexthash="2210299" %)
1675 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1676
1677 (% _msthash="506112" _msttexthash="2113462" %)
1678 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1679
1680 (% _msthash="506113" _msttexthash="2087423" %)
1681 AT+PDTA:  Print the sector data from start page to stop page
1682
1683 (% _msthash="506114" _msttexthash="1063127" %)
1684 AT+PLDTA:  Print the last few sets of data
1685
1686 (% _msthash="506115" _msttexthash="1999426" %)
1687 AT+CLRDTA:  Clear the storage, record position back to 1st
1688
1689 (% _msthash="506116" _msttexthash="442130" %)
1690 AT+SLEEP:  Set sleep mode
1691
1692 (% _msthash="506117" _msttexthash="1080222" %)
1693 AT+EXT:  Get or Set external sensor model
1694
1695 (% _msthash="506118" _msttexthash="1309490" %)
1696 AT+BAT:  Get the current battery voltage in mV
1697
1698 (% _msthash="506119" _msttexthash="813891" %)
1699 AT+CFG:  Print all configurations
1700
1701 (% _msthash="506120" _msttexthash="551707" %)
1702 AT+WMOD:  Get or Set Work Mode
1703
1704 (% _msthash="506121" _msttexthash="2631499" %)
1705 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1706
1707 (% _msthash="506122" _msttexthash="3907150" %)
1708 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1709
1710 (% _msthash="506123" _msttexthash="854620" %)
1711 AT+SETCNT:  Set the count at present
1712
1713 (% _msthash="506124" _msttexthash="2554877" %)
1714 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1715
1716 (% _msthash="506125" _msttexthash="771849" %)
1717 AT+RPL:  Get or set response level
1718
1719 (% _msthash="506126" _msttexthash="1484314" %)
1720 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1721
1722 (% _msthash="506127" _msttexthash="741728" %)
1723 AT+LEAPSEC:  Get or Set Leap Second
1724
1725 (% _msthash="506128" _msttexthash="1694017" %)
1726 AT+SYNCMOD:  Get or Set time synchronization method
1727
1728 (% _msthash="506129" _msttexthash="2235948" %)
1729 AT+SYNCTDC:  Get or set time synchronization interval in day
1730
1731 (% _msthash="506130" _msttexthash="425542" %)
1732 AT+PID:  Get or set the PID
1733
1734
1735 == 6.2 Where to use AT commands and Downlink commands ==
1736
1737 (% _msthash="506131" _msttexthash="14585714" %)
1738 AT commands：
1739
1740 [[image:image-20220620153708-1.png||height="603" width="723"]]
1741
1742 (% _msthash="506132" _msttexthash="337922" %)
1743 Downlink commands:
1744
1745
1746 (% _msthash="506133" _msttexthash="33046" %)
1747 **TTN:**
1748
1749 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1750
1751
1752 (% _msthash="506134" _msttexthash="11113791" %)
1753 **Helium：**
1754
1755 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1756
1757
1758 (% _msthash="506135" _msttexthash="4159844" %)
1759 **Chirpstack:The downlink window will not be displayed until the network is accessed**
1760
1761 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1762
1763 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1764
1765
1766 (% _msthash="506136" _msttexthash="39286" %)
1767 **Aws:**
1768
1769 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1770
1771
1772
1773 == 6.3 How to change the uplink interval？ ==
1774
1775 [[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"]]
1776
1777
1778
1779 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1780
1781 [[image:image-20220615153355-1.png]]
1782
1783 [[image:1655802313617-381.png]]
1784
1785
1786 (((
1787 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.
1788 )))
1789
1790
1791 Input password and ATZ to activate LHT65N,As shown below:
1792
1793 [[image:image-20220615154519-3.png||height="672" width="807"]]
1794
1795
1796
1797 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1798
1799
1800 [[image:image-20220615153355-1.png]]
1801
1802
1803 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1804
1805 [[image:image-20220615170542-5.png]]
1806
1807
1808 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1809
1810 (% _msthash="506146" _msttexthash="52173160" %)
1811 First connect the four lines；(% style="display:none" %)
1812
1813 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1814
1815
1816 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1817
1818 [[image:image-20220621170938-2.png]]
1819
1820
1821 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1822
1823 [[image:image-20220615171334-6.png]]
1824
1825
1826 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1827
1828
1829 When this interface appears, it indicates that the download has been completed.
1830
1831 [[image:image-20220620160723-8.png]]
1832
1833
1834 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1835
1836
1837 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1838
1839 [[image:image-20220623110706-1.png]]
1840
1841
1842 [[image:image-20220623112117-4.png||height="459" width="343"]]
1843
1844 (((
1845 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.
1846 )))
1847
1848
1849 Input password and ATZ to activate LHT65N,As shown below:
1850
1851 [[image:image-20220615154519-3.png||height="672" width="807"]]
1852
1853
1854 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1855
1856 [[image:image-20220623110706-1.png]]
1857
1858 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1859
1860 [[image:image-20220615170542-5.png]]
1861
1862
1863 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1864
1865 (% _msthash="506146" _msttexthash="52173160" %)
1866 First connect the four lines；
1867
1868 (% _msthash="506146" _msttexthash="52173160" %)
1869 [[image:image-20220623113959-5.png||height="528" width="397"]]
1870
1871 (% _msthash="506146" _msttexthash="52173160" %)
1872 Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
1873
1874 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1875
1876 [[image:image-20220615171334-6.png]]
1877
1878
1879 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1880
1881
1882 When this interface appears, it indicates that the download has been completed.
1883
1884 [[image:image-20220620160723-8.png]]
1885
1886
1887 Finally,restart reset device again
1888
1889
1890 = 7. Order Info =
1891
1892
1893 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
1894
1895 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1896
1897 (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1898
1899 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1900
1901 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1902
1903 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1904
1905 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1906
1907 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1908
1909 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1910
1911 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1912
1913 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1914
1915 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1916
1917
1918 = 8. Packing Info =
1919
1920
1921 **Package Includes**:
1922
1923 * LHT65N Temperature & Humidity Sensor x 1
1924 * Optional external sensor
1925
1926 **Dimension and weight**:
1927
1928 * Device Size:  10 x 10 x 3.5 cm
1929 * Device Weight: 120.5g
1930
1931
1932 = 9. Reference material =
1933
1934 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1935
1936
1937 = 10. FCC Warning =
1938
1939 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1940
1941 (1) This device may not cause harmful interference；
1942
1943 (2) this device must accept any interference received, including interference that may cause undesired operation.