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Version 185.4 by Xiaoling on 2022/06/29 14:02
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9 (% _msthash="315238" _msttexthash="18964465" _mstvisible="3" %)**Table of Contents：**
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11 {{toc/}}
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16
17 = 1. Introduction =
18
19 == 1.1 What is LHT65N Temperature & Humidity Sensor ==
20
21
22 (((
23 The Dragino LHT65N Temperature & Humidity sensor is a Long Range LoRaWAN Sensor. It includes a (% style="color:#4f81bd" %)**built-in Temperature & Humidity sensor**(%%) and has an external sensor connector to connect to an external (% style="color:#4f81bd" %)**Temperature Sensor.**
24 )))
25
26 (((
27 The LHT65N allows users to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, building automation, and so on.
28 )))
29
30 (((
31 LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
32 )))
33
34 (((
35 LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
36 )))
37
38 (((
39 LHT65N supports (% style="color:#4f81bd" %)**Datalog Feature**(%%). It will record the data when there is no network coverage and users can retrieve the sensor value later to ensure no miss for every sensor reading.
40 )))
41
42 (((
43 *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
44 )))
45
46
47 == 1.2 Features ==
48
49 * 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
64
65 == 1.3 Specification ==
66
67
68 **Built-in Temperature Sensor:**
69
70 * Resolution: 0.01 °C
71 * Accuracy Tolerance : Typ ±0.3 °C
72 * Long Term Drift: < 0.02 °C/yr
73 * Operating Range: -40 ~~ 85 °C
74
75 **Built-in Humidity Sensor:**
76
77 * Resolution: 0.04 %RH
78 * Accuracy Tolerance : Typ ±3 %RH
79 * Long Term Drift: < 0.02 °C/yr
80 * Operating Range: 0 ~~ 96 %RH
81
82 **External Temperature Sensor:**
83
84 * Resolution: 0.0625 °C
85 * ±0.5°C accuracy from -10°C to +85°C
86 * ±2°C accuracy from -55°C to +125°C
87 * Operating Range: -55 °C ~~ 125 °C
88
89
90
91
92
93 = 2. Connect LHT65N to IoT Server =
94
95 == 2.1 How does LHT65N work? ==
96
97 (((
98 LHT65N is configured as LoRaWAN OTAA Class A mode by default. Each LHT65N is shipped with a worldwide unique set of OTAA keys. To use LHT65N in a LoRaWAN network, first, we need to put the OTAA keys in LoRaWAN Network Server and then activate LHT65N.
99 )))
100
101 (((
102 If LHT65N is under the coverage of this LoRaWAN network. LHT65N can join the LoRaWAN network automatically. After successfully joining, LHT65N will start to measure environment temperature and humidity, and start to transmit sensor data to the LoRaWAN server. The default period for each uplink is 20 minutes.
103 )))
104
105
106 == 2.2 How to Activate LHT65N? ==
107
108 (((
109 The LHT65N has two working modes:
110 )))
111
112 * (((
113 (% 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.
114 )))
115 * (((
116 (% 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. 
117 )))
118
119 (((
120 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
121 )))
122
123
124 [[image:image-20220515123819-1.png||_mstalt="430742" _mstvisible="3" height="379" width="317"]]
125
126 [[image:image-20220525110604-2.png||_mstalt="427531" _mstvisible="3"]]
127
128
129
130 == 2.3 Example to join LoRaWAN network ==
131
132 (% _msthash="315240" _msttexthash="9205482" _mstvisible="1" class="wikigeneratedid" %)
133 This section shows an example of how to join the TTN V3 LoRaWAN IoT server. Use with other LoRaWAN IoT servers is of a similar procedure.
134
135 (% _mstvisible="1" class="wikigeneratedid" %)
136 [[image:image-20220522232442-1.png||_mstalt="427830" _mstvisible="3" height="387" width="648"]]
137
138
139 (((
140 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:
141 )))
142
143
144
145 === 2.3.1 Step 1: Create Device n TTN ===
146
147 (((
148 Create a device in TTN V3 with the OTAA keys from LHT65N.
149 )))
150
151 (((
152 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
153 )))
154
155 [[image:image-20220617150003-1.jpeg]]
156
157 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
158
159 Add APP EUI in the application.
160
161
162 [[image:image-20220522232916-3.png||_mstalt="430495" _mstvisible="3"]]
163
164
165 [[image:image-20220522232932-4.png||_mstalt="430157" _mstvisible="3"]]
166
167
168 [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
169
170
171 Note: LHT65N use same payload as LHT65.
172
173
174 [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
175
176
177 Input APP EUI,  APP KEY and DEV EUI:
178
179
180 [[image:image-20220522233118-7.png||_mstalt="430430" _mstvisible="3"]]
181
182
183
184
185 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
186
187 (((
188 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.
189 )))
190
191 [[image:image-20220522233300-8.png||_mstalt="428389" _mstvisible="3" height="219" width="722"]]
192
193
194
195
196 == 2.4 Uplink Payload ==
197
198 (((
199 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.
200 )))
201
202 (((
203 After each uplink, the (% _mstvisible="3" style="color:blue" %)**BLUE LED**(%%) will blink once.
204 )))
205
206 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:426px" %)
207 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 97px;" %)(% _mstvisible="5" %)
208 (((
209 (% _mstvisible="6" %)
210 (% _msthash="1817478" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
211 )))|=(% _mstvisible="4" style="width: 39px;" %)(% _mstvisible="5" %)
212 (((
213 (% _mstvisible="6" %)
214 (% _msthash="1817479" _msttexthash="4550" _mstvisible="8" %)**2**
215 )))|=(% _mstvisible="4" style="width: 100px;" %)(% _mstvisible="5" %)
216 (((
217 (% _mstvisible="6" %)
218 (% _msthash="1817480" _msttexthash="4550" _mstvisible="8" %)**2**
219 )))|=(% _mstvisible="4" style="width: 77px;" %)(% _mstvisible="5" %)
220 (((
221 (% _mstvisible="6" %)
222 (% _msthash="1817481" _msttexthash="4550" _mstvisible="8" %)**2**
223 )))|=(% _mstvisible="4" style="width: 47px;" %)(% _mstvisible="5" %)
224 (((
225 (% _mstvisible="6" %)
226 (% _msthash="1817482" _msttexthash="4459" _mstvisible="8" %)**1**
227 )))|=(% _mstvisible="4" style="width: 51px;" %)(% _mstvisible="5" %)
228 (((
229 (% _mstvisible="6" %)
230 (% _msthash="1817483" _msttexthash="4732" _mstvisible="8" %)**4**
231 )))
232 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:97px" %)(% _mstvisible="5" %)
233 (((
234 (% _mstvisible="6" %)
235 (% _msthash="1817484" _msttexthash="60203" _mstvisible="8" %)**Value**
236 )))|(% _mstvisible="4" style="width:39px" %)(% _mstvisible="5" %)
237 (((
238 (% _mstvisible="6" %)
239 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo" _msthash="1817485" _msttexthash="22594" _mstvisible="7"]]
240 )))|(% _mstvisible="4" style="width:100px" %)(% _mstvisible="5" %)
241 (((
242 (% _mstvisible="6" %)
243 (((
244 (% _mstvisible="7" %)
245 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224742" _msttexthash="405769" _mstvisible="8"]]
246 )))
247 )))|(% _mstvisible="4" style="width:77px" %)(% _mstvisible="5" %)
248 (((
249 (% _mstvisible="6" %)
250 (((
251 (% _mstvisible="7" %)
252 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2224743" _msttexthash="105872" _mstvisible="8"]]
253 )))
254
255 (% _mstvisible="6" %)
256 (((
257 (% _mstvisible="7" %)
258 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224744" _msttexthash="117429" _mstvisible="8"]]
259 )))
260 )))|(% _mstvisible="4" style="width:47px" %)(% _mstvisible="5" %)
261 (((
262 (% _mstvisible="6" %)
263 [[Ext>>||anchor="H2.4.5Ext23" _msthash="1817486" _msttexthash="32331" _mstvisible="7"]] #
264 )))|(% _mstvisible="4" style="width:51px" %)(% _mstvisible="5" %)
265 (((
266 (% _mstvisible="6" %)
267 [[Ext value>>||anchor="H2.4.6Extvalue" _msthash="1817487" _msttexthash="116545" _mstvisible="7"]]
268 )))
269
270 * The First 6 bytes: has fix meanings for every LHT65N.
271 * The 7th byte (EXT #): defines the external sensor model.
272 * 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.)
273
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275
276
277
278 === 2.4.1 Decoder in TTN V3 ===
279
280 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.
281
282 Below is the position to put the decoder and LHT65N decoder can be download from here:
283
284
285 [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0 >>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0||_msthash="315253" _msttexthash="3509064" _mstvisible="2"]]
286
287
288 [[image:image-20220522234118-10.png||_mstalt="451464" _mstvisible="3" height="353" width="729"]]
289
290
291
292
293 === 2.4.2 BAT-Battery Info ===
294
295 These two bytes of BAT include the battery state and the actually voltage
296
297 [[image:image-20220523152839-18.png||_mstalt="457613" _mstvisible="3"]]
298
299
300 [[image:image-20220522235639-1.png||_mstalt="431392" _mstvisible="3" height="139" width="727"]]
301
302
303 Check the battery voltage for LHT65N.
304
305 * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
306 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
307
308
309
310
311
312 === 2.4.3 Built-in Temperature ===
313
314 [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
315
316 * Temperature:  0x0ABB/100=27.47℃
317
318 [[image:image-20220522235639-3.png||_mstalt="432120" _mstvisible="3"]]
319
320 * Temperature:  (0xF5C6-65536)/100=-26.18℃
321
322
323
324
325
326 === 2.4.4 Built-in Humidity ===
327
328 [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
329
330 * Humidity:    0x025C/10=60.4%
331
332
333
334
335
336 === 2.4.5 Ext # ===
337
338 Bytes for External Sensor:
339
340 [[image:image-20220523152822-17.png||_mstalt="454545" _mstvisible="3"]]
341
342
343
344 === 2.4.6 Ext value ===
345
346 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
347
348
349 [[image:image-20220522235639-5.png||_mstalt="432848" _mstvisible="3"]]
350
351
352 * DS18B20 temp=0x0ADD/100=27.81℃
353
354 The last 2 bytes of data are meaningless
355
356 [[image:image-20220522235639-6.png||_mstalt="433212" _mstvisible="3"]]
357
358
359 * External temperature= (0xF54F-65536)/100=-27.37℃
360
361 The last 2 bytes of data are meaningless
362
363 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
364
365
366
367 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
368
369 (((
370 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:
371 )))
372
373 (((
374
375 )))
376
377 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
378 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 96px;" %)(% _mstvisible="5" %)
379 (((
380 (% _mstvisible="6" %)
381 (% _msthash="1817488" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
382 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
383 (((
384 (% _mstvisible="6" %)
385 (% _msthash="1817489" _msttexthash="4550" _mstvisible="8" %)**2**
386 )))|=(% _mstvisible="4" style="width: 99px;" %)(% _mstvisible="5" %)
387 (((
388 (% _mstvisible="6" %)
389 (% _msthash="1817490" _msttexthash="4550" _mstvisible="8" %)**2**
390 )))|=(% _mstvisible="4" style="width: 132px;" %)(% _mstvisible="5" %)
391 (((
392 (% _mstvisible="6" %)
393 (% _msthash="1817491" _msttexthash="4550" _mstvisible="8" %)**2**
394 )))|=(% _mstvisible="4" style="width: 54px;" %)(% _mstvisible="5" %)
395 (((
396 (% _mstvisible="6" %)
397 (% _msthash="1817492" _msttexthash="4459" _mstvisible="8" %)**1**
398 )))|=(% _mstvisible="4" style="width: 64px;" %)(% _mstvisible="5" %)
399 (((
400 (% _mstvisible="6" %)
401 (% _msthash="1817493" _msttexthash="4732" _mstvisible="8" %)**4**
402 )))
403 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:96px" %)(% _mstvisible="5" %)
404 (((
405 (% _mstvisible="6" %)
406 (% _msthash="1817494" _msttexthash="60203" _mstvisible="8" %)**Value**
407 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
408 (((
409 (% _mstvisible="6" %)
410 [[External temperature>>||anchor="H4.2SetExternalSensorMode" _msthash="1817495" _msttexthash="426517" _mstvisible="7"]]
411 )))|(% _mstvisible="4" style="width:99px" %)(% _mstvisible="5" %)
412 (((
413 (% _mstvisible="6" %)
414 (((
415 (% _mstvisible="7" %)
416 [[Built-In>>||anchor="H2.4.3Built-inTemperature" _msthash="2224745" _msttexthash="100464" _mstvisible="8"]]
417 )))
418
419 (% _mstvisible="6" %)
420 (((
421 (% _mstvisible="7" %)
422 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224746" _msttexthash="184041" _mstvisible="8"]]
423 )))
424 )))|(% _mstvisible="4" style="width:132px" %)(% _mstvisible="5" %)
425 (((
426 (% _mstvisible="6" %)
427 (((
428 (% _msthash="2224747" _msttexthash="136331" _mstvisible="7" %)
429 BAT Status &
430 )))
431
432 (% _mstvisible="6" %)
433 (((
434 (% _mstvisible="7" %)
435 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224748" _msttexthash="311181" _mstvisible="8"]]
436 )))
437 )))|(% _mstvisible="4" style="width:54px" %)(% _mstvisible="5" %)
438 (((
439 (% _msthash="1817496" _msttexthash="147225" _mstvisible="6" %)
440 Status & Ext
441 )))|(% _mstvisible="4" style="width:64px" %)(% _mstvisible="5" %)
442 (((
443 (% _mstvisible="6" %)
444 (((
445 (% _mstvisible="7" %)
446 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2224749" _msttexthash="227175" _mstvisible="8"]]
447 )))
448 )))
449
450 (% _mstvisible="1" %)
451 * (% _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**
452
453 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:469px" %)
454 (% _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]
455 (% _mstvisible="3" %)|(% _msthash="1230921" _msttexthash="60203" _mstvisible="4" style="width:65px" %)Value|(% _mstvisible="4" style="width:267px" %)(% _mstvisible="5" %)
456 (((
457 (% _msthash="1817497" _msttexthash="128427" _mstvisible="6" %)
458 BAT Status
459
460 (% _msthash="1817498" _msttexthash="472784" _mstvisible="6" %)
461 00(b): Ultra Low ( BAT <= 2.50v)
462
463 (% _msthash="1817499" _msttexthash="483678" _mstvisible="6" %)
464 01(b): Low  (2.50v <=BAT <= 2.55v)
465
466 (% _msthash="1817500" _msttexthash="440791" _mstvisible="6" %)
467 10(b): OK   (2.55v <= BAT <=2.65v)
468
469 (% _msthash="1817501" _msttexthash="334191" _mstvisible="6" %)
470 11(b): Good   (BAT >= 2.65v)
471 )))|(% _mstvisible="4" style="width:134px" %)(% _mstvisible="5" %)
472 (((
473 (% _mstvisible="6" %)
474 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="1817502" _msttexthash="311181" _mstvisible="7"]]
475
476 (% _mstvisible="6" %)
477
478 )))
479
480 * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
481
482 [[image:image-20220523152434-16.png||_mstalt="453921" _mstvisible="3"]]
483
484 * Poll Message Flag:  1: This message is a poll message reply, 0: means this is a normal uplink.
485 * 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.
486 * 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)
487
488
489
490
491
492 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
493
494 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
495
496 be used to power the external ADC sensor; user can control the power on time for this
497
498 sensor by setting:
499
500 AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)Time to power this sensor, from 0 ~~ 65535ms
501
502 For example:
503
504 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
505
506
507 Or use **downlink command A2** to set the same.
508
509 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
510
511 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.
512
513 [[image:image-20220628150112-1.png||height="241" width="285"]]
514
515
516 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
517
518 [[image:image-20220628150714-4.png]]
519
520
521 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.
522
523 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
524
525 [[image:image-20220628151005-5.png]]
526
527
528 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
529
530 [[image:image-20220628151056-6.png]]
531
532
533 3) Within range
534
535 [[image:image-20220628151143-7.png]]
536
537
538
539 == 2.5 Show data on Datacake ==
540
541 (((
542 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:
543 )))
544
545 (((
546
547 )))
548
549 (((
550 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
551 )))
552
553 (((
554 (% 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.
555 )))
556
557 (((
558
559 )))
560
561 (((
562 Add Datacake:
563 )))
564
565
566 [[image:image-20220523000825-7.png||_mstalt="429884" _mstvisible="3" height="262" width="583"]]
567
568
569
570 Select default key as Access Key:
571
572
573 [[image:image-20220523000825-8.png||_mstalt="430248" _mstvisible="3" height="453" width="406"]]
574
575
576 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/||_mstvisible="2"]]) , add LHT65 device.
577
578
579 [[image:image-20220523000825-9.png||_mstalt="430612" _mstvisible="3" height="366" width="392"]]
580
581
582 [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
583
584
585
586 == 2.6 Datalog Feature ==
587
588 (((
589 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.
590 )))
591
592
593
594 === 2.6.1 Ways to get datalog via LoRaWAN ===
595
596 There are two methods:
597
598 1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specify time range.
599 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 network recover.
600
601
602
603
604
605 === 2.6.2 Unix TimeStamp ===
606
607
608 LHT65N uses Unix TimeStamp format based on
609
610
611 [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
612
613
614
615 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
616
617 Below is the converter example
618
619 [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
620
621 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
622
623
624
625 === 2.6.3 Set Device Time ===
626
627 (((
628 There are two ways to set device's time:
629 )))
630
631 (((
632 **~1. Through LoRaWAN MAC Command (Default settings)**
633 )))
634
635 (((
636 User need to set SYNCMOD=1 to enable sync time via MAC command.
637 )))
638
639 (((
640 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).
641 )))
642
643 (((
644 (% 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.
645 )))
646
647 (((
648
649 )))
650
651 (((
652 **2. Manually Set Time**
653 )))
654
655 (((
656 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
657 )))
658
659
660
661 === 2.6.4 Poll sensor value ===
662
663 User can poll sensor value based on timestamps from the server. Below is the downlink command.
664
665 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
666
667
668 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.
669
670 For example, downlink command **31 5FC5F350 5FC6 0160 05**
671
672 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
673
674 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
675
676
677
678 === 2.6.5 Datalog Uplink payload ===
679
680 (% _msthash="315267" _msttexthash="2245087" _mstvisible="1" %)
681 The Datalog poll reply uplink will use below payload format.
682
683 (% _mstvisible="1" %)
684 (((
685 (% _mstvisible="2" %)
686 (% _msthash="506080" _msttexthash="451581" _mstvisible="4" %)**Retrieval data payload**
687 )))
688
689 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
690 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 93px;" %)(% _mstvisible="5" %)
691 (((
692 (% _mstvisible="6" %)
693 (((
694 (% _mstvisible="7" %)
695 (% _msthash="2224750" _msttexthash="161122" _mstvisible="9" %)**Size(bytes)**
696 )))
697 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
698 (((
699 (% _mstvisible="6" %)
700 (((
701 (% _mstvisible="7" %)
702 (% _msthash="2224751" _msttexthash="4550" _mstvisible="9" %)**2**
703 )))
704 )))|=(% _mstvisible="4" style="width: 102px;" %)(% _mstvisible="5" %)
705 (((
706 (% _mstvisible="6" %)
707 (((
708 (% _mstvisible="7" %)
709 (% _msthash="2224752" _msttexthash="4550" _mstvisible="9" %)**2**
710 )))
711 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
712 (((
713 (% _mstvisible="6" %)
714 (((
715 (% _mstvisible="7" %)
716 (% _msthash="2224753" _msttexthash="4550" _mstvisible="9" %)**2**
717 )))
718 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
719 (((
720 (% _mstvisible="6" %)
721 (((
722 (% _mstvisible="7" %)
723 (% _msthash="2224754" _msttexthash="4459" _mstvisible="9" %)**1**
724 )))
725 )))|=(% _mstvisible="4" style="width: 48px;" %)(% _mstvisible="5" %)
726 (((
727 (% _mstvisible="6" %)
728 (((
729 (% _mstvisible="7" %)
730 (% _msthash="2224755" _msttexthash="4732" _mstvisible="9" %)**4**
731 )))
732 )))
733 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:93px" %)(% _mstvisible="5" %)
734 (((
735 (% _mstvisible="6" %)
736 (((
737 (% _mstvisible="7" %)
738 (% _msthash="2224756" _msttexthash="60203" _mstvisible="9" %)**Value**
739 )))
740 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
741 (((
742 (% _mstvisible="6" %)
743 (((
744 (% _mstvisible="7" %)
745 [[External sensor data>>||anchor="H2.4.6Extvalue" _msthash="2224757" _msttexthash="386672" _mstvisible="8"]]
746 )))
747 )))|(% _mstvisible="4" style="width:102px" %)(% _mstvisible="5" %)
748 (((
749 (% _mstvisible="6" %)
750 (((
751 (% _mstvisible="7" %)
752 (((
753 (% _mstvisible="8" %)
754 [[Built In>>||anchor="H2.4.3Built-inTemperature" _msthash="2671864" _msttexthash="91065" _mstvisible="9"]]
755 )))
756 )))
757
758 (% _mstvisible="6" %)
759 (((
760 (% _mstvisible="7" %)
761 (((
762 (% _mstvisible="8" %)
763 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2671865" _msttexthash="184041" _mstvisible="9"]]
764 )))
765 )))
766 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
767 (((
768 (% _mstvisible="6" %)
769 (((
770 (% _mstvisible="7" %)
771 (((
772 (% _mstvisible="8" %)
773 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2671866" _msttexthash="105872" _mstvisible="9"]]
774 )))
775 )))
776
777 (% _mstvisible="6" %)
778 (((
779 (% _mstvisible="7" %)
780 (((
781 (% _mstvisible="8" %)
782 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2671867" _msttexthash="117429" _mstvisible="9"]]
783 )))
784 )))
785 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
786 (((
787 (% _mstvisible="6" %)
788 (((
789 (% _msthash="2224758" _msttexthash="390390" _mstvisible="7" %)
790 Poll message flag & Ext
791 )))
792 )))|(% _mstvisible="4" style="width:48px" %)(% _mstvisible="5" %)
793 (((
794 (% _mstvisible="6" %)
795 (((
796 (% _mstvisible="7" %)
797 (((
798 (% _mstvisible="8" %)
799 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2671868" _msttexthash="227175" _mstvisible="9"]]
800 )))
801 )))
802
803 (% _mstvisible="6" %)
804 (((
805 (% _mstvisible="7" %)
806 (((
807 (% _mstvisible="8" %)
808
809 )))
810 )))
811 )))
812
813 (% _mstvisible="1" %)
814 (% _msthash="315268" _msttexthash="390390" _mstvisible="3" %)**Poll message flag & Ext**
815
816 (% _mstvisible="1" %)
817 [[image:image-20220523152208-14.png||_mstalt="452920" _mstvisible="3"]]
818
819 (% _mstvisible="1" %)
820 (((
821 (% _mstvisible="2" %)
822 (((
823 (% _msthash="736723" _msttexthash="2005003" _mstvisible="3" %)
824 (((
825 Poll Message Flag: 1: This message is a poll message reply.
826 )))
827 )))
828 )))
829
830 (% _mstvisible="1" %)
831 * (% _mstvisible="3" %)
832 (((
833 (% _mstvisible="4" %)
834 (((
835 (% _msthash="1197157" _msttexthash="561548" _mstvisible="5" %)
836 (((
837 Poll Message Flag is set to 1.
838 )))
839 )))
840 )))
841 * (% _mstvisible="3" %)
842 (((
843 (% _mstvisible="4" %)
844 (((
845 (% _msthash="1197158" _msttexthash="9284964" _mstvisible="5" %)
846 (((
847 Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
848 )))
849 )))
850 )))
851
852 (% _mstvisible="1" %)
853 (((
854 (% _mstvisible="2" %)
855 (((
856 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
857 (((
858
859 )))
860
861 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
862 (((
863 For example, in US915 band, the max payload for different DR is:
864 )))
865 )))
866 )))
867
868 (% _mstvisible="1" %)
869 (((
870 (% _mstvisible="2" %)
871 (((
872 (% _msthash="736725" _msttexthash="1065532" _mstvisible="3" %)
873 (((
874 a) DR0: max is 11 bytes so one entry of data
875 )))
876 )))
877 )))
878
879 (% _mstvisible="1" %)
880 (((
881 (% _mstvisible="2" %)
882 (((
883 (% _msthash="736726" _msttexthash="3265665" _mstvisible="3" %)
884 (((
885 b) DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
886 )))
887 )))
888 )))
889
890 (% _mstvisible="1" %)
891 (((
892 (% _mstvisible="2" %)
893 (((
894 (% _msthash="736727" _msttexthash="1454115" _mstvisible="3" style="text-align: left;" %)
895 (((
896 c) DR2: total payload includes 11 entries of data
897 )))
898 )))
899 )))
900
901 (% _mstvisible="1" %)
902 (((
903 (% _mstvisible="2" %)
904 (((
905 (% _msthash="736728" _msttexthash="1483924" _mstvisible="3" style="text-align: left;" %)
906 (((
907 d) DR3: total payload includes 22 entries of data.
908 )))
909 )))
910 )))
911
912 (% _mstvisible="1" %)
913 (((
914 (% _mstvisible="2" %)
915 (((
916 (% _msthash="736729" _msttexthash="5848349" _mstvisible="3" style="text-align: left;" %)
917 (((
918 If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0   
919 )))
920 )))
921 )))
922
923
924 (% _mstvisible="1" style="text-align: left;" %)
925 (% _msthash="315269" _msttexthash="104767" _mstvisible="3" %)**Example:**
926
927 (% _msthash="315270" _msttexthash="913822" _mstvisible="1" style="text-align: left;" %)
928 If LHT65N has below data inside Flash:
929
930 (% _mstvisible="1" %)
931 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
932
933 (% _mstvisible="1" %)
934 (((
935 (% _msthash="506081" _msttexthash="1663961" _mstvisible="2" style="text-align: left;" %)
936 If user sends below downlink command: (% _mstvisible="3" style="background-color:yellow" %)3160065F9760066DA705
937 )))
938
939 (% _mstvisible="1" %)
940 (((
941 (% _msthash="506082" _msttexthash="1092494" _mstvisible="2" style="text-align: left;" %)
942 Where : Start time: 60065F97 = time 21/1/19 04:27:03
943 )))
944
945 (% _mstvisible="1" %)
946 (((
947 (% _msthash="506083" _msttexthash="737269" _mstvisible="2" style="text-align: left;" %)
948 Stop time 60066DA7= time 21/1/19 05:27:(% _msthash="903005" _msttexthash="9672" _mstvisible="2" %)03
949 )))
950
951 (% _mstvisible="1" %)
952 (((
953 (% _mstvisible="2" %)
954
955 )))
956
957 (% _mstvisible="1" %)
958 (((
959 (% _msthash="506084" _msttexthash="751218" _mstvisible="2" style="text-align: left;" %)
960 LHT65N will uplink this payload.
961 )))
962
963 (% _mstvisible="1" %)
964 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
965
966 (% _msthash="315271" _msttexthash="12012546" _mstvisible="1" style="text-align: left;" %)
967 (((
968 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
969 )))
970
971 (% _msthash="315237" _msttexthash="1385839" %)
972 (((
973 Where the first 11 bytes is for the first entry:
974 )))
975
976 (% _msthash="315238" _msttexthash="274846" %)
977 (((
978 7FFF089801464160065F97
979 )))
980
981 (% _msthash="315239" _msttexthash="617435" %)
982 (((
983 Ext sensor data=0x7FFF/100=327.67
984 )))
985
986 (% _msthash="315240" _msttexthash="270543" %)
987 (((
988 Temp=0x0898/100=22.00
989 )))
990
991 (% _msthash="315241" _msttexthash="211783" %)
992 (((
993 Hum=0x0146/10=32.6
994 )))
995
996 (% _msthash="315242" _msttexthash="1569776" %)
997 (((
998 poll message flag & Ext=0x41,means reply data,Ext=1
999 )))
1000
1001 (% _msthash="315243" _msttexthash="1120509" %)
1002 (((
1003 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
1004 )))
1005
1006
1007
1008 == 2.7 Alarm Mode ==
1009
1010 (((
1011 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.
1012 )))
1013
1014 (((
1015 (% style="color:red" %)Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.
1016 )))
1017
1018 (((
1019 **AT COMMAND FOR ALARM MODE:**
1020 )))
1021
1022 (% _mstvisible="1" class="box infomessage" %)
1023 (((
1024 (((
1025 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled)
1026 )))
1027
1028 (((
1029 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1030 )))
1031
1032 (((
1033 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1034 )))
1035
1036 (((
1037 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
1038 )))
1039
1040 (((
1041 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1042 )))
1043 )))
1044
1045
1046
1047 == 2.8 LED Indicator ==
1048
1049 The LHT65 has a triple color LED which for easy showing different stage .
1050
1051 While user press ACT button, the LED will work as per LED status with ACT button.
1052
1053 In a normal working state:
1054
1055 * For each uplink, the BLUE LED or RED LED will blink once.
1056 BLUE LED when external sensor is connected.
1057 * RED LED when external sensor is not connected
1058 * For each success downlink, the PURPLE LED will blink once
1059
1060
1061
1062
1063
1064 == 2.9 installation ==
1065
1066 (% _mstvisible="1" %)
1067 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
1068
1069
1070
1071 = 3. Sensors and Accessories =
1072
1073 == 3.1 E2 Extension Cable ==
1074
1075 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1076
1077 **1m long breakout cable for LHT65N. Features:**
1078
1079 * (((
1080 Use for AT Command， works for both LHT52/LHT65N
1081 )))
1082 * (((
1083 Update firmware for LHT65N, works for both LHT52/LHT65N
1084 )))
1085 * (((
1086 Supports ADC mode to monitor external ADC
1087 )))
1088 * (((
1089 Supports Interrupt mode
1090 )))
1091 * (((
1092 Exposed All pins from the LHT65N Type-C connector.
1093 )))
1094
1095 [[image:image-20220619092421-3.png||height="371" width="529"]]
1096
1097
1098
1099
1100 == 3.2 E3 Temperature Probe ==
1101
1102
1103 [[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"]]
1104
1105
1106 Temperature sensor with 2 meters cable long
1107
1108 * Resolution: 0.0625 °C
1109 * ±0.5°C accuracy from -10°C to +85°C
1110 * ±2°C accuracy from -55°C to +125°C
1111 * Operating Range: -40 ~~ 125 °C
1112 * Working voltage 2.35v ~~ 5v
1113
1114
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
1186
1187 == 4.2 Set External Sensor Mode ==
1188
1189 Feature: Change External Sensor Mode.
1190
1191 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1192
1193 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1194
1195
1196 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1197
1198 Total bytes: 2 ~~ 5 bytes
1199
1200 **Example:**
1201
1202 * 0xA201: Set external sensor type to E1
1203
1204 * 0xA209: Same as AT+EXT=9
1205
1206 * 0xA20702003c: Same as AT+SETCNT=60
1207
1208
1209
1210
1211
1212 == 4.3 Enable/Disable uplink Temperature probe ID ==
1213
1214 (((
1215 Feature: If PID is enabled, device will send the temperature probe ID on:
1216 )))
1217
1218 * (((
1219 First Packet after OTAA Join
1220 )))
1221 * (((
1222 Every 24 hours since the first packet.
1223 )))
1224
1225 (((
1226 PID is default set to disable (0)
1227 )))
1228
1229 (% style="color:#4f81bd" %)**AT Command:**
1230
1231 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1232
1233
1234 (% style="color:#4f81bd" %)**Downlink Command:**
1235
1236 * **0xA800**  **~-~->** AT+PID=0
1237 * **0xA801**     **~-~->** AT+PID=1
1238
1239
1240
1241
1242
1243 == 4.4 Set Password ==
1244
1245 Feature: Set device password, max 9 digits
1246
1247 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1248
1249 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1250
1251
1252 (% style="color:#4f81bd" %)**Downlink Command:**
1253
1254 No downlink command for this feature.
1255
1256
1257
1258 == 4.5 Quit AT Command ==
1259
1260 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1261
1262 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1263
1264 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1265
1266
1267 (% style="color:#4f81bd" %)**Downlink Command:**
1268
1269 No downlink command for this feature.
1270
1271
1272
1273 == 4.6 Set to sleep mode ==
1274
1275 Feature: Set device to sleep mode
1276
1277 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1278 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1279
1280 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1281
1282 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1283
1284
1285 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1286
1287 * There is no downlink command to set to Sleep mode.
1288
1289
1290
1291
1292
1293 == 4.7 Set system time ==
1294
1295 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1296
1297 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1298
1299 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1300
1301
1302 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1303
1304 0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1305
1306
1307
1308 == 4.8 Set Time Sync Mode ==
1309
1310 (((
1311 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1312 )))
1313
1314 (((
1315 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.
1316 )))
1317
1318 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1319
1320 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1321
1322
1323 (% style="color:#4f81bd" %)**Downlink Command:**
1324
1325 0x28 01 ~/~/ Same As AT+SYNCMOD=1
1326 0x28 00 ~/~/ Same As AT+SYNCMOD=0
1327
1328
1329
1330 == 4.9 Set Time Sync Interval ==
1331
1332 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1333
1334 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1335
1336 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1337
1338
1339 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1340
1341 **0x29 0A** ~/~/ Same as AT+SYNCTDC=0x0A
1342
1343
1344
1345 == 4.10 Print data entries base on page. ==
1346
1347 Feature: Print the sector data from start page to stop page (max is 416 pages).
1348
1349 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1350
1351 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1352
1353
1354 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1355
1356 No downlink commands for feature
1357
1358
1359
1360 == 4.11 Print last few data entries. ==
1361
1362 Feature: Print the last few data entries
1363
1364 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1365
1366 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1367
1368
1369 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1370
1371 No downlink commands for feature
1372
1373
1374
1375 == 4.12 Clear Flash Record ==
1376
1377 Feature: Clear flash storage for data log feature.
1378
1379
1380 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1381
1382 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1383
1384
1385 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1386
1387 * Example: 0xA301 ~/~/Same as AT+CLRDTA
1388
1389
1390
1391
1392
1393 == 4.13 Auto Send None-ACK messages ==
1394
1395 (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
1396 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.
1397
1398 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1399
1400 (% _msthash="315396" _msttexthash="734682" _mstvisible="1" %)
1401 The default factory setting is 0
1402
1403 (% _mstvisible="1" border="1" style="background-color:#ffffcc; color:green; width:450px" %)
1404 (% _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**
1405 (% _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
1406
1407 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1408
1409 * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1410
1411
1412
1413
1414
1415 = 5. Battery & How to replace =
1416
1417 == 5.1 Battery Type ==
1418
1419 (((
1420 (((
1421 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.
1422 )))
1423 )))
1424
1425 (((
1426
1427 )))
1428
1429 (((
1430 (((
1431 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1432 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1433 )))
1434 )))
1435
1436 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1437
1438
1439 == 5.2 Replace Battery ==
1440
1441 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.
1442
1443 [[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"]]
1444
1445
1446 == 5.3 Battery Life Analyze ==
1447
1448 (((
1449 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:
1450 [[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]]
1451 )))
1452
1453 (((
1454
1455 )))
1456
1457 (((
1458 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]]
1459 )))
1460
1461
1462
1463 = 6. FAQ =
1464
1465 == 6.1 How to use AT Command? ==
1466
1467 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.
1468
1469 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1470
1471
1472 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1473
1474 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1475 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1476 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1477 * (% style="background-color:yellow" %)**USB to TTL 3.3V <~-~-> D-**
1478
1479 (((
1480 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.
1481 )))
1482
1483
1484 Input password and ATZ to activate LHT65N,As shown below:
1485
1486 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1487
1488
1489 (% _msthash="506066" _msttexthash="544869" %)
1490 AT Command List is as below:
1491
1492 (% _msthash="506067" _msttexthash="361920" %)
1493 AT+<CMD>? :  Help on <CMD>
1494
1495 (% _msthash="506068" _msttexthash="243061" %)
1496 AT+<CMD> :  Run <CMD>
1497
1498 (% _msthash="506069" _msttexthash="704197" %)
1499 AT+<CMD>=<value> :  Set the value
1500
1501 (% _msthash="506070" _msttexthash="455676" %)
1502 AT+<CMD>=? :  Get the value
1503
1504 (% _msthash="506071" _msttexthash="670553" %)
1505 AT+DEBUG:  Set more info output
1506
1507 (% _msthash="506072" _msttexthash="485888" %)
1508 ATZ:  Trig a reset of the MCU
1509
1510 (% _msthash="506073" _msttexthash="2068872" %)
1511 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1512
1513 (% _msthash="506074" _msttexthash="689169" %)
1514 AT+DEUI:  Get or Set the Device EUI
1515
1516 (% _msthash="506075" _msttexthash="960414" %)
1517 AT+DADDR:  Get or Set the Device Address
1518
1519 (% _msthash="506076" _msttexthash="1079897" %)
1520 AT+APPKEY:  Get or Set the Application Key
1521
1522 (% _msthash="506077" _msttexthash="1326143" %)
1523 AT+NWKSKEY:  Get or Set the Network Session Key
1524
1525 (% _msthash="506078" _msttexthash="1573000" %)
1526 AT+APPSKEY:  Get or Set the Application Session Key
1527
1528 (% _msthash="506079" _msttexthash="1041729" %)
1529 AT+APPEUI:  Get or Set the Application EUI
1530
1531 (% _msthash="506080" _msttexthash="2104206" %)
1532 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1533
1534 (% _msthash="506081" _msttexthash="3369288" %)
1535 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1536
1537 (% _msthash="506082" _msttexthash="1894529" %)
1538 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1539
1540 (% _msthash="506083" _msttexthash="3864172" %)
1541 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1542
1543 (% _msthash="506084" _msttexthash="1712204" %)
1544 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1545
1546 (% _msthash="506085" _msttexthash="1281202" %)
1547 AT+RX2FQ:  Get or Set the Rx2 window frequency
1548
1549 (% _msthash="506086" _msttexthash="2796781" %)
1550 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1551
1552 (% _msthash="506087" _msttexthash="3285165" %)
1553 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1554
1555 (% _msthash="506088" _msttexthash="3286179" %)
1556 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1557
1558 (% _msthash="506089" _msttexthash="4703803" %)
1559 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1560
1561 (% _msthash="506090" _msttexthash="4704999" %)
1562 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1563
1564 (% _msthash="506091" _msttexthash="1528683" %)
1565 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1566
1567 (% _msthash="506092" _msttexthash="757185" %)
1568 AT+NWKID:  Get or Set the Network ID
1569
1570 (% _msthash="506093" _msttexthash="1156597" %)
1571 AT+FCU:  Get or Set the Frame Counter Uplink
1572
1573 (% _msthash="506094" _msttexthash="1273987" %)
1574 AT+FCD:  Get or Set the Frame Counter Downlink
1575
1576 (% _msthash="506095" _msttexthash="859222" %)
1577 AT+CLASS:  Get or Set the Device Class
1578
1579 (% _msthash="506096" _msttexthash="384852" %)
1580 AT+JOIN:  Join network
1581
1582 (% _msthash="506097" _msttexthash="548626" %)
1583 AT+NJS:  Get the join status
1584
1585 (% _msthash="506098" _msttexthash="2546206" %)
1586 AT+SENDB:  Send hexadecimal data along with the application port
1587
1588 (% _msthash="506099" _msttexthash="1932307" %)
1589 AT+SEND:  Send text data along with the application port
1590
1591 (% _msthash="506100" _msttexthash="3560557" %)
1592 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1593
1594 (% _msthash="506101" _msttexthash="1429701" %)
1595 AT+RECV:  Print last received data in raw format
1596
1597 (% _msthash="506102" _msttexthash="1735981" %)
1598 AT+VER:  Get current image version and Frequency Band
1599
1600 (% _msthash="506103" _msttexthash="1189474" %)
1601 AT+CFM:  Get or Set the confirmation mode (0-1)
1602
1603 (% _msthash="506104" _msttexthash="1718210" %)
1604 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1605
1606 (% _msthash="506105" _msttexthash="1339403" %)
1607 AT+SNR:  Get the SNR of the last received packet
1608
1609 (% _msthash="506106" _msttexthash="1452009" %)
1610 AT+RSSI:  Get the RSSI of the last received packet
1611
1612 (% _msthash="506107" _msttexthash="2768142" %)
1613 AT+TDC:  Get or set the application data transmission interval in ms
1614
1615 (% _msthash="506108" _msttexthash="1083914" %)
1616 AT+PORT:  Get or set the application port
1617
1618 (% _msthash="506109" _msttexthash="622440" %)
1619 AT+DISAT:  Disable AT commands
1620
1621 (% _msthash="506110" _msttexthash="868361" %)
1622 AT+PWORD: Set password, max 9 digits
1623
1624 (% _msthash="506111" _msttexthash="2210299" %)
1625 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1626
1627 (% _msthash="506112" _msttexthash="2113462" %)
1628 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1629
1630 (% _msthash="506113" _msttexthash="2087423" %)
1631 AT+PDTA:  Print the sector data from start page to stop page
1632
1633 (% _msthash="506114" _msttexthash="1063127" %)
1634 AT+PLDTA:  Print the last few sets of data
1635
1636 (% _msthash="506115" _msttexthash="1999426" %)
1637 AT+CLRDTA:  Clear the storage, record position back to 1st
1638
1639 (% _msthash="506116" _msttexthash="442130" %)
1640 AT+SLEEP:  Set sleep mode
1641
1642 (% _msthash="506117" _msttexthash="1080222" %)
1643 AT+EXT:  Get or Set external sensor model
1644
1645 (% _msthash="506118" _msttexthash="1309490" %)
1646 AT+BAT:  Get the current battery voltage in mV
1647
1648 (% _msthash="506119" _msttexthash="813891" %)
1649 AT+CFG:  Print all configurations
1650
1651 (% _msthash="506120" _msttexthash="551707" %)
1652 AT+WMOD:  Get or Set Work Mode
1653
1654 (% _msthash="506121" _msttexthash="2631499" %)
1655 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1656
1657 (% _msthash="506122" _msttexthash="3907150" %)
1658 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1659
1660 (% _msthash="506123" _msttexthash="854620" %)
1661 AT+SETCNT:  Set the count at present
1662
1663 (% _msthash="506124" _msttexthash="2554877" %)
1664 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1665
1666 (% _msthash="506125" _msttexthash="771849" %)
1667 AT+RPL:  Get or set response level
1668
1669 (% _msthash="506126" _msttexthash="1484314" %)
1670 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1671
1672 (% _msthash="506127" _msttexthash="741728" %)
1673 AT+LEAPSEC:  Get or Set Leap Second
1674
1675 (% _msthash="506128" _msttexthash="1694017" %)
1676 AT+SYNCMOD:  Get or Set time synchronization method
1677
1678 (% _msthash="506129" _msttexthash="2235948" %)
1679 AT+SYNCTDC:  Get or set time synchronization interval in day
1680
1681 (% _msthash="506130" _msttexthash="425542" %)
1682 AT+PID:  Get or set the PID
1683
1684
1685 == 6.2 Where to use AT commands and Downlink commands ==
1686
1687 (% _msthash="506131" _msttexthash="14585714" %)
1688 AT commands：
1689
1690 [[image:image-20220620153708-1.png||height="603" width="723"]]
1691
1692 (% _msthash="506132" _msttexthash="337922" %)
1693 Downlink commands:
1694
1695
1696 (% _msthash="506133" _msttexthash="33046" %)
1697 **TTN:**
1698
1699 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1700
1701
1702 (% _msthash="506134" _msttexthash="11113791" %)
1703 **Helium：**
1704
1705 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1706
1707
1708 (% _msthash="506135" _msttexthash="4159844" %)
1709 **Chirpstack:The downlink window will not be displayed until the network is accessed**
1710
1711 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1712
1713 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1714
1715
1716 (% _msthash="506136" _msttexthash="39286" %)
1717 **Aws:**
1718
1719 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1720
1721
1722
1723 == 6.3 How to change the uplink interval？ ==
1724
1725 [[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"]]
1726
1727
1728
1729 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1730
1731 [[image:image-20220615153355-1.png]]
1732
1733 [[image:1655802313617-381.png]]
1734
1735
1736 (((
1737 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.
1738 )))
1739
1740
1741 Input password and ATZ to activate LHT65N,As shown below:
1742
1743 [[image:image-20220615154519-3.png||height="672" width="807"]]
1744
1745
1746
1747 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1748
1749
1750 [[image:image-20220615153355-1.png]]
1751
1752
1753 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1754
1755 [[image:image-20220615170542-5.png]]
1756
1757
1758 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1759
1760 (% _msthash="506146" _msttexthash="52173160" %)
1761 First connect the four lines；(% style="display:none" %)
1762
1763 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1764
1765
1766 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1767
1768 [[image:image-20220621170938-2.png]]
1769
1770
1771 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1772
1773 [[image:image-20220615171334-6.png]]
1774
1775
1776 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1777
1778
1779 When this interface appears, it indicates that the download has been completed.
1780
1781 [[image:image-20220620160723-8.png]]
1782
1783
1784 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1785
1786
1787 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1788
1789 [[image:image-20220623110706-1.png]]
1790
1791
1792 [[image:image-20220623112117-4.png||height="459" width="343"]]
1793
1794 (((
1795 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.
1796 )))
1797
1798
1799 Input password and ATZ to activate LHT65N,As shown below:
1800
1801 [[image:image-20220615154519-3.png||height="672" width="807"]]
1802
1803
1804 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1805
1806 [[image:image-20220623110706-1.png]]
1807
1808 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1809
1810 [[image:image-20220615170542-5.png]]
1811
1812
1813 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1814
1815 (% _msthash="506146" _msttexthash="52173160" %)
1816 First connect the four lines；
1817
1818 (% _msthash="506146" _msttexthash="52173160" %)
1819 [[image:image-20220623113959-5.png||height="528" width="397"]]
1820
1821 (% _msthash="506146" _msttexthash="52173160" %)
1822 Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
1823
1824 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1825
1826 [[image:image-20220615171334-6.png]]
1827
1828
1829 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1830
1831
1832 When this interface appears, it indicates that the download has been completed.
1833
1834 [[image:image-20220620160723-8.png]]
1835
1836
1837 Finally,restart reset device again
1838
1839
1840 = 7. Order Info =
1841
1842
1843 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
1844
1845 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1846
1847 (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1848
1849 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1850
1851 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1852
1853 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1854
1855 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1856
1857 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1858
1859 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1860
1861 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1862
1863 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1864
1865 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1866
1867
1868
1869
1870
1871 = 8. Packing Info =
1872
1873
1874 **Package Includes**:
1875
1876 * LHT65N Temperature & Humidity Sensor x 1
1877 * Optional external sensor
1878
1879 **Dimension and weight**:
1880
1881 * Device Size:  10 x 10 x 3.5 cm
1882 * Device Weight: 120.5g
1883
1884
1885
1886
1887
1888 = 9. Reference material =
1889
1890 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1891
1892
1893
1894
1895
1896 = 10. FCC Warning =
1897
1898 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1899
1900 (1) This device may not cause harmful interference；
1901
1902 (2) this device must accept any interference received, including interference that may cause undesired operation.