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Version 188.1 by Edwin Chen on 2022/07/03 11:17
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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 == 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 **Built-in Humidity Sensor:**
75
76 * Resolution: 0.04 %RH
77 * Accuracy Tolerance : Typ ±3 %RH
78 * Long Term Drift: < 0.02 °C/yr
79 * Operating Range: 0 ~~ 96 %RH
80
81 **External Temperature Sensor:**
82
83 * Resolution: 0.0625 °C
84 * ±0.5°C accuracy from -10°C to +85°C
85 * ±2°C accuracy from -55°C to +125°C
86 * Operating Range: -55 °C ~~ 125 °C
87
88
89
90
91 = 2. Connect LHT65N to IoT Server =
92
93 == 2.1 How does LHT65N work? ==
94
95 (((
96 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.
97 )))
98
99 (((
100 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.
101 )))
102
103
104 == 2.2 How to Activate LHT65N? ==
105
106 (((
107 The LHT65N has two working modes:
108 )))
109
110 * (((
111 (% 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.
112 )))
113 * (((
114 (% 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. 
115 )))
116
117 (((
118 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
119 )))
120
121
122 [[image:image-20220515123819-1.png||_mstalt="430742" _mstvisible="3" height="379" width="317"]]
123
124 [[image:image-20220525110604-2.png||_mstalt="427531" _mstvisible="3"]]
125
126
127
128 == 2.3 Example to join LoRaWAN network ==
129
130 (% _msthash="315240" _msttexthash="9205482" _mstvisible="1" class="wikigeneratedid" %)
131 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.
132
133 (% _mstvisible="1" class="wikigeneratedid" %)
134 [[image:image-20220522232442-1.png||_mstalt="427830" _mstvisible="3" height="387" width="648"]]
135
136
137 (((
138 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:
139 )))
140
141
142
143 === 2.3.1 Step 1: Create Device n TTN ===
144
145 (((
146 Create a device in TTN V3 with the OTAA keys from LHT65N.
147 )))
148
149 (((
150 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
151 )))
152
153 [[image:image-20220617150003-1.jpeg]]
154
155 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
156
157 Add APP EUI in the application.
158
159
160 [[image:image-20220522232916-3.png||_mstalt="430495" _mstvisible="3"]]
161
162
163 [[image:image-20220522232932-4.png||_mstalt="430157" _mstvisible="3"]]
164
165
166 [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
167
168
169 Note: LHT65N use same payload as LHT65.
170
171
172 [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
173
174
175 Input APP EUI,  APP KEY and DEV EUI:
176
177
178 [[image:image-20220522233118-7.png||_mstalt="430430" _mstvisible="3"]]
179
180
181
182
183 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
184
185 (((
186 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.
187 )))
188
189 [[image:image-20220522233300-8.png||_mstalt="428389" _mstvisible="3" height="219" width="722"]]
190
191
192
193
194 == 2.4 Uplink Payload ==
195
196 (((
197 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.
198 )))
199
200 (((
201 After each uplink, the (% _mstvisible="3" style="color:blue" %)**BLUE LED**(%%) will blink once.
202 )))
203
204 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:426px" %)
205 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 97px;" %)(% _mstvisible="5" %)
206 (((
207 (% _mstvisible="6" %)
208 (% _msthash="1817478" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
209 )))|=(% _mstvisible="4" style="width: 39px;" %)(% _mstvisible="5" %)
210 (((
211 (% _mstvisible="6" %)
212 (% _msthash="1817479" _msttexthash="4550" _mstvisible="8" %)**2**
213 )))|=(% _mstvisible="4" style="width: 100px;" %)(% _mstvisible="5" %)
214 (((
215 (% _mstvisible="6" %)
216 (% _msthash="1817480" _msttexthash="4550" _mstvisible="8" %)**2**
217 )))|=(% _mstvisible="4" style="width: 77px;" %)(% _mstvisible="5" %)
218 (((
219 (% _mstvisible="6" %)
220 (% _msthash="1817481" _msttexthash="4550" _mstvisible="8" %)**2**
221 )))|=(% _mstvisible="4" style="width: 47px;" %)(% _mstvisible="5" %)
222 (((
223 (% _mstvisible="6" %)
224 (% _msthash="1817482" _msttexthash="4459" _mstvisible="8" %)**1**
225 )))|=(% _mstvisible="4" style="width: 51px;" %)(% _mstvisible="5" %)
226 (((
227 (% _mstvisible="6" %)
228 (% _msthash="1817483" _msttexthash="4732" _mstvisible="8" %)**4**
229 )))
230 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:97px" %)(% _mstvisible="5" %)
231 (((
232 (% _mstvisible="6" %)
233 (% _msthash="1817484" _msttexthash="60203" _mstvisible="8" %)**Value**
234 )))|(% _mstvisible="4" style="width:39px" %)(% _mstvisible="5" %)
235 (((
236 (% _mstvisible="6" %)
237 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo" _msthash="1817485" _msttexthash="22594" _mstvisible="7"]]
238 )))|(% _mstvisible="4" style="width:100px" %)(% _mstvisible="5" %)
239 (((
240 (% _mstvisible="6" %)
241 (((
242 (% _mstvisible="7" %)
243 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224742" _msttexthash="405769" _mstvisible="8"]]
244 )))
245 )))|(% _mstvisible="4" style="width:77px" %)(% _mstvisible="5" %)
246 (((
247 (% _mstvisible="6" %)
248 (((
249 (% _mstvisible="7" %)
250 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2224743" _msttexthash="105872" _mstvisible="8"]]
251 )))
252
253 (% _mstvisible="6" %)
254 (((
255 (% _mstvisible="7" %)
256 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224744" _msttexthash="117429" _mstvisible="8"]]
257 )))
258 )))|(% _mstvisible="4" style="width:47px" %)(% _mstvisible="5" %)
259 (((
260 (% _mstvisible="6" %)
261 [[Ext>>||anchor="H2.4.5Ext23" _msthash="1817486" _msttexthash="32331" _mstvisible="7"]] #
262 )))|(% _mstvisible="4" style="width:51px" %)(% _mstvisible="5" %)
263 (((
264 (% _mstvisible="6" %)
265 [[Ext value>>||anchor="H2.4.6Extvalue" _msthash="1817487" _msttexthash="116545" _mstvisible="7"]]
266 )))
267
268 * The First 6 bytes: has fix meanings for every LHT65N.
269 * The 7th byte (EXT #): defines the external sensor model.
270 * 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.)
271
272
273
274
275 === 2.4.1 Decoder in TTN V3 ===
276
277 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.
278
279 Below is the position to put the decoder and LHT65N decoder can be download from here:
280
281
282 [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0 >>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0||_msthash="315253" _msttexthash="3509064" _mstvisible="2"]]
283
284
285 [[image:image-20220522234118-10.png||_mstalt="451464" _mstvisible="3" height="353" width="729"]]
286
287
288
289
290 === 2.4.2 BAT-Battery Info ===
291
292 These two bytes of BAT include the battery state and the actually voltage
293
294 [[image:image-20220523152839-18.png||_mstalt="457613" _mstvisible="3"]]
295
296
297 [[image:image-20220522235639-1.png||_mstalt="431392" _mstvisible="3" height="139" width="727"]]
298
299
300 Check the battery voltage for LHT65N.
301
302 * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
303 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
304
305
306
307
308 === 2.4.3 Built-in Temperature ===
309
310 [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
311
312 * Temperature:  0x0ABB/100=27.47℃
313
314 [[image:image-20220522235639-3.png||_mstalt="432120" _mstvisible="3"]]
315
316 * Temperature:  (0xF5C6-65536)/100=-26.18℃
317
318
319
320
321 === 2.4.4 Built-in Humidity ===
322
323 [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
324
325 * Humidity:    0x025C/10=60.4%
326
327
328
329
330 === 2.4.5 Ext # ===
331
332 Bytes for External Sensor:
333
334 [[image:image-20220523152822-17.png||_mstalt="454545" _mstvisible="3"]]
335
336
337
338 === 2.4.6 Ext value ===
339
340 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
341
342
343 [[image:image-20220522235639-5.png||_mstalt="432848" _mstvisible="3"]]
344
345
346 * DS18B20 temp=0x0ADD/100=27.81℃
347
348 The last 2 bytes of data are meaningless
349
350 [[image:image-20220522235639-6.png||_mstalt="433212" _mstvisible="3"]]
351
352
353 * External temperature= (0xF54F-65536)/100=-27.37℃
354
355 The last 2 bytes of data are meaningless
356
357 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
358
359
360
361 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
362
363 (((
364 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:
365 )))
366
367 (((
368
369 )))
370
371 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
372 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 96px;" %)(% _mstvisible="5" %)
373 (((
374 (% _mstvisible="6" %)
375 (% _msthash="1817488" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
376 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
377 (((
378 (% _mstvisible="6" %)
379 (% _msthash="1817489" _msttexthash="4550" _mstvisible="8" %)**2**
380 )))|=(% _mstvisible="4" style="width: 99px;" %)(% _mstvisible="5" %)
381 (((
382 (% _mstvisible="6" %)
383 (% _msthash="1817490" _msttexthash="4550" _mstvisible="8" %)**2**
384 )))|=(% _mstvisible="4" style="width: 132px;" %)(% _mstvisible="5" %)
385 (((
386 (% _mstvisible="6" %)
387 (% _msthash="1817491" _msttexthash="4550" _mstvisible="8" %)**2**
388 )))|=(% _mstvisible="4" style="width: 54px;" %)(% _mstvisible="5" %)
389 (((
390 (% _mstvisible="6" %)
391 (% _msthash="1817492" _msttexthash="4459" _mstvisible="8" %)**1**
392 )))|=(% _mstvisible="4" style="width: 64px;" %)(% _mstvisible="5" %)
393 (((
394 (% _mstvisible="6" %)
395 (% _msthash="1817493" _msttexthash="4732" _mstvisible="8" %)**4**
396 )))
397 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:96px" %)(% _mstvisible="5" %)
398 (((
399 (% _mstvisible="6" %)
400 (% _msthash="1817494" _msttexthash="60203" _mstvisible="8" %)**Value**
401 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
402 (((
403 (% _mstvisible="6" %)
404 [[External temperature>>||anchor="H4.2SetExternalSensorMode" _msthash="1817495" _msttexthash="426517" _mstvisible="7"]]
405 )))|(% _mstvisible="4" style="width:99px" %)(% _mstvisible="5" %)
406 (((
407 (% _mstvisible="6" %)
408 (((
409 (% _mstvisible="7" %)
410 [[Built-In>>||anchor="H2.4.3Built-inTemperature" _msthash="2224745" _msttexthash="100464" _mstvisible="8"]]
411 )))
412
413 (% _mstvisible="6" %)
414 (((
415 (% _mstvisible="7" %)
416 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224746" _msttexthash="184041" _mstvisible="8"]]
417 )))
418 )))|(% _mstvisible="4" style="width:132px" %)(% _mstvisible="5" %)
419 (((
420 (% _mstvisible="6" %)
421 (((
422 (% _msthash="2224747" _msttexthash="136331" _mstvisible="7" %)
423 BAT Status &
424 )))
425
426 (% _mstvisible="6" %)
427 (((
428 (% _mstvisible="7" %)
429 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224748" _msttexthash="311181" _mstvisible="8"]]
430 )))
431 )))|(% _mstvisible="4" style="width:54px" %)(% _mstvisible="5" %)
432 (((
433 (% _msthash="1817496" _msttexthash="147225" _mstvisible="6" %)
434 Status & Ext
435 )))|(% _mstvisible="4" style="width:64px" %)(% _mstvisible="5" %)
436 (((
437 (% _mstvisible="6" %)
438 (((
439 (% _mstvisible="7" %)
440 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2224749" _msttexthash="227175" _mstvisible="8"]]
441 )))
442 )))
443
444 (% _mstvisible="1" %)
445 * (% _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**
446
447 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:469px" %)
448 (% _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]
449 (% _mstvisible="3" %)|(% _msthash="1230921" _msttexthash="60203" _mstvisible="4" style="width:65px" %)Value|(% _mstvisible="4" style="width:267px" %)(% _mstvisible="5" %)
450 (((
451 (% _msthash="1817497" _msttexthash="128427" _mstvisible="6" %)
452 BAT Status
453
454 (% _msthash="1817498" _msttexthash="472784" _mstvisible="6" %)
455 00(b): Ultra Low ( BAT <= 2.50v)
456
457 (% _msthash="1817499" _msttexthash="483678" _mstvisible="6" %)
458 01(b): Low  (2.50v <=BAT <= 2.55v)
459
460 (% _msthash="1817500" _msttexthash="440791" _mstvisible="6" %)
461 10(b): OK   (2.55v <= BAT <=2.65v)
462
463 (% _msthash="1817501" _msttexthash="334191" _mstvisible="6" %)
464 11(b): Good   (BAT >= 2.65v)
465 )))|(% _mstvisible="4" style="width:134px" %)(% _mstvisible="5" %)
466 (((
467 (% _mstvisible="6" %)
468 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="1817502" _msttexthash="311181" _mstvisible="7"]]
469
470 (% _mstvisible="6" %)
471
472 )))
473
474 * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
475
476 [[image:image-20220523152434-16.png||_mstalt="453921" _mstvisible="3"]]
477
478 * Poll Message Flag:  1: This message is a poll message reply, 0: means this is a normal uplink.
479 * 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.
480 * 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)
481
482
483
484
485 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
486
487 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
488
489 be used to power the external ADC sensor; user can control the power on time for this
490
491 sensor by setting:
492
493 AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)Time to power this sensor, from 0 ~~ 65535ms
494
495 For example:
496
497 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
498
499
500 Or use **downlink command A2** to set the same.
501
502 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
503
504 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.
505
506 [[image:image-20220628150112-1.png||height="241" width="285"]]
507
508
509 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
510
511 [[image:image-20220628150714-4.png]]
512
513
514 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.
515
516 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
517
518 [[image:image-20220628151005-5.png]]
519
520
521 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
522
523 [[image:image-20220628151056-6.png]]
524
525
526 3) Within range
527
528 [[image:image-20220628151143-7.png]]
529
530
531
532 == 2.5 Show data on Datacake ==
533
534 (((
535 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:
536 )))
537
538 (((
539
540 )))
541
542 (((
543 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
544 )))
545
546 (((
547 (% 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.
548 )))
549
550 (((
551
552 )))
553
554 (((
555 Add Datacake:
556 )))
557
558
559 [[image:image-20220523000825-7.png||_mstalt="429884" _mstvisible="3" height="262" width="583"]]
560
561
562
563 Select default key as Access Key:
564
565
566 [[image:image-20220523000825-8.png||_mstalt="430248" _mstvisible="3" height="453" width="406"]]
567
568
569 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/||_mstvisible="2"]]) , add LHT65 device.
570
571
572 [[image:image-20220523000825-9.png||_mstalt="430612" _mstvisible="3" height="366" width="392"]]
573
574
575 [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
576
577
578
579 == 2.6 Datalog Feature ==
580
581 (((
582 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.
583 )))
584
585
586
587 === 2.6.1 Ways to get datalog via LoRaWAN ===
588
589 There are two methods:
590
591 1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specifying time range.
592 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.
593
594 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
595
596 [[image:image-20220703111700-2.png||height="381" width="1119"]]
597
598
599 === 2.6.2 Unix TimeStamp ===
600
601
602 LHT65N uses Unix TimeStamp format based on
603
604
605 [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
606
607
608
609 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
610
611 Below is the converter example
612
613 [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
614
615 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
616
617
618
619 === 2.6.3 Set Device Time ===
620
621 (((
622 There are two ways to set device's time:
623 )))
624
625 (((
626 **~1. Through LoRaWAN MAC Command (Default settings)**
627 )))
628
629 (((
630 User need to set SYNCMOD=1 to enable sync time via MAC command.
631 )))
632
633 (((
634 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).
635 )))
636
637 (((
638 (% 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.
639 )))
640
641 (((
642
643 )))
644
645 (((
646 **2. Manually Set Time**
647 )))
648
649 (((
650 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
651 )))
652
653
654
655 === 2.6.4 Poll sensor value ===
656
657 User can poll sensor value based on timestamps from the server. Below is the downlink command.
658
659 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
660
661
662 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.
663
664 For example, downlink command **31 5FC5F350 5FC6 0160 05**
665
666 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
667
668 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
669
670
671
672 === 2.6.5 Datalog Uplink payload ===
673
674 (% _msthash="315267" _msttexthash="2245087" _mstvisible="1" %)
675 The Datalog poll reply uplink will use below payload format.
676
677 (% _mstvisible="1" %)
678 (((
679 (% _mstvisible="2" %)
680 (% _msthash="506080" _msttexthash="451581" _mstvisible="4" %)**Retrieval data payload**
681 )))
682
683 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
684 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 93px;" %)(% _mstvisible="5" %)
685 (((
686 (% _mstvisible="6" %)
687 (((
688 (% _mstvisible="7" %)
689 (% _msthash="2224750" _msttexthash="161122" _mstvisible="9" %)**Size(bytes)**
690 )))
691 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
692 (((
693 (% _mstvisible="6" %)
694 (((
695 (% _mstvisible="7" %)
696 (% _msthash="2224751" _msttexthash="4550" _mstvisible="9" %)**2**
697 )))
698 )))|=(% _mstvisible="4" style="width: 102px;" %)(% _mstvisible="5" %)
699 (((
700 (% _mstvisible="6" %)
701 (((
702 (% _mstvisible="7" %)
703 (% _msthash="2224752" _msttexthash="4550" _mstvisible="9" %)**2**
704 )))
705 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
706 (((
707 (% _mstvisible="6" %)
708 (((
709 (% _mstvisible="7" %)
710 (% _msthash="2224753" _msttexthash="4550" _mstvisible="9" %)**2**
711 )))
712 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
713 (((
714 (% _mstvisible="6" %)
715 (((
716 (% _mstvisible="7" %)
717 (% _msthash="2224754" _msttexthash="4459" _mstvisible="9" %)**1**
718 )))
719 )))|=(% _mstvisible="4" style="width: 48px;" %)(% _mstvisible="5" %)
720 (((
721 (% _mstvisible="6" %)
722 (((
723 (% _mstvisible="7" %)
724 (% _msthash="2224755" _msttexthash="4732" _mstvisible="9" %)**4**
725 )))
726 )))
727 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:93px" %)(% _mstvisible="5" %)
728 (((
729 (% _mstvisible="6" %)
730 (((
731 (% _mstvisible="7" %)
732 (% _msthash="2224756" _msttexthash="60203" _mstvisible="9" %)**Value**
733 )))
734 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
735 (((
736 (% _mstvisible="6" %)
737 (((
738 (% _mstvisible="7" %)
739 [[External sensor data>>||anchor="H2.4.6Extvalue" _msthash="2224757" _msttexthash="386672" _mstvisible="8"]]
740 )))
741 )))|(% _mstvisible="4" style="width:102px" %)(% _mstvisible="5" %)
742 (((
743 (% _mstvisible="6" %)
744 (((
745 (% _mstvisible="7" %)
746 (((
747 (% _mstvisible="8" %)
748 [[Built In>>||anchor="H2.4.3Built-inTemperature" _msthash="2671864" _msttexthash="91065" _mstvisible="9"]]
749 )))
750 )))
751
752 (% _mstvisible="6" %)
753 (((
754 (% _mstvisible="7" %)
755 (((
756 (% _mstvisible="8" %)
757 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2671865" _msttexthash="184041" _mstvisible="9"]]
758 )))
759 )))
760 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
761 (((
762 (% _mstvisible="6" %)
763 (((
764 (% _mstvisible="7" %)
765 (((
766 (% _mstvisible="8" %)
767 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2671866" _msttexthash="105872" _mstvisible="9"]]
768 )))
769 )))
770
771 (% _mstvisible="6" %)
772 (((
773 (% _mstvisible="7" %)
774 (((
775 (% _mstvisible="8" %)
776 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2671867" _msttexthash="117429" _mstvisible="9"]]
777 )))
778 )))
779 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
780 (((
781 (% _mstvisible="6" %)
782 (((
783 (% _msthash="2224758" _msttexthash="390390" _mstvisible="7" %)
784 Poll message flag & Ext
785 )))
786 )))|(% _mstvisible="4" style="width:48px" %)(% _mstvisible="5" %)
787 (((
788 (% _mstvisible="6" %)
789 (((
790 (% _mstvisible="7" %)
791 (((
792 (% _mstvisible="8" %)
793 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2671868" _msttexthash="227175" _mstvisible="9"]]
794 )))
795 )))
796
797 (% _mstvisible="6" %)
798 (((
799 (% _mstvisible="7" %)
800 (((
801 (% _mstvisible="8" %)
802
803 )))
804 )))
805 )))
806
807 (% _mstvisible="1" %)
808 (% _msthash="315268" _msttexthash="390390" _mstvisible="3" %)**Poll message flag & Ext**
809
810 (% _mstvisible="1" %)
811 [[image:image-20220523152208-14.png||_mstalt="452920" _mstvisible="3"]]
812
813 (% _mstvisible="1" %)
814 (((
815 (% _mstvisible="2" %)
816 (((
817 (% _msthash="736723" _msttexthash="2005003" _mstvisible="3" %)
818 (((
819 Poll Message Flag: 1: This message is a poll message reply.
820 )))
821 )))
822 )))
823
824 (% _mstvisible="1" %)
825 * (% _mstvisible="3" %)
826 (((
827 (% _mstvisible="4" %)
828 (((
829 (% _msthash="1197157" _msttexthash="561548" _mstvisible="5" %)
830 (((
831 Poll Message Flag is set to 1.
832 )))
833 )))
834 )))
835 * (% _mstvisible="3" %)
836 (((
837 (% _mstvisible="4" %)
838 (((
839 (% _msthash="1197158" _msttexthash="9284964" _mstvisible="5" %)
840 (((
841 Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
842 )))
843 )))
844 )))
845
846 (% _mstvisible="1" %)
847 (((
848 (% _mstvisible="2" %)
849 (((
850 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
851 (((
852
853 )))
854
855 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
856 (((
857 For example, in US915 band, the max payload for different DR is:
858 )))
859 )))
860 )))
861
862 (% _mstvisible="1" %)
863 (((
864 (% _mstvisible="2" %)
865 (((
866 (% _msthash="736725" _msttexthash="1065532" _mstvisible="3" %)
867 (((
868 a) DR0: max is 11 bytes so one entry of data
869 )))
870 )))
871 )))
872
873 (% _mstvisible="1" %)
874 (((
875 (% _mstvisible="2" %)
876 (((
877 (% _msthash="736726" _msttexthash="3265665" _mstvisible="3" %)
878 (((
879 b) DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
880 )))
881 )))
882 )))
883
884 (% _mstvisible="1" %)
885 (((
886 (% _mstvisible="2" %)
887 (((
888 (% _msthash="736727" _msttexthash="1454115" _mstvisible="3" style="text-align: left;" %)
889 (((
890 c) DR2: total payload includes 11 entries of data
891 )))
892 )))
893 )))
894
895 (% _mstvisible="1" %)
896 (((
897 (% _mstvisible="2" %)
898 (((
899 (% _msthash="736728" _msttexthash="1483924" _mstvisible="3" style="text-align: left;" %)
900 (((
901 d) DR3: total payload includes 22 entries of data.
902 )))
903 )))
904 )))
905
906 (% _mstvisible="1" %)
907 (((
908 (% _mstvisible="2" %)
909 (((
910 (% _msthash="736729" _msttexthash="5848349" _mstvisible="3" style="text-align: left;" %)
911 (((
912 If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0   
913 )))
914 )))
915 )))
916
917
918 (% _mstvisible="1" style="text-align: left;" %)
919 (% _msthash="315269" _msttexthash="104767" _mstvisible="3" %)**Example:**
920
921 (% _msthash="315270" _msttexthash="913822" _mstvisible="1" style="text-align: left;" %)
922 If LHT65N has below data inside Flash:
923
924 (% _mstvisible="1" %)
925 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
926
927 (% _mstvisible="1" %)
928 (((
929 (% _msthash="506081" _msttexthash="1663961" _mstvisible="2" style="text-align: left;" %)
930 If user sends below downlink command: (% _mstvisible="3" style="background-color:yellow" %)3160065F9760066DA705
931 )))
932
933 (% _mstvisible="1" %)
934 (((
935 (% _msthash="506082" _msttexthash="1092494" _mstvisible="2" style="text-align: left;" %)
936 Where : Start time: 60065F97 = time 21/1/19 04:27:03
937 )))
938
939 (% _mstvisible="1" %)
940 (((
941 (% _msthash="506083" _msttexthash="737269" _mstvisible="2" style="text-align: left;" %)
942 Stop time 60066DA7= time 21/1/19 05:27:(% _msthash="903005" _msttexthash="9672" _mstvisible="2" %)03
943 )))
944
945 (% _mstvisible="1" %)
946 (((
947 (% _mstvisible="2" %)
948
949 )))
950
951 (% _mstvisible="1" %)
952 (((
953 (% _msthash="506084" _msttexthash="751218" _mstvisible="2" style="text-align: left;" %)
954 LHT65N will uplink this payload.
955 )))
956
957 (% _mstvisible="1" %)
958 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
959
960 (% _msthash="315271" _msttexthash="12012546" _mstvisible="1" style="text-align: left;" %)
961 (((
962 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
963 )))
964
965 (% _msthash="315237" _msttexthash="1385839" %)
966 (((
967 Where the first 11 bytes is for the first entry:
968 )))
969
970 (% _msthash="315238" _msttexthash="274846" %)
971 (((
972 7FFF089801464160065F97
973 )))
974
975 (% _msthash="315239" _msttexthash="617435" %)
976 (((
977 Ext sensor data=0x7FFF/100=327.67
978 )))
979
980 (% _msthash="315240" _msttexthash="270543" %)
981 (((
982 Temp=0x0898/100=22.00
983 )))
984
985 (% _msthash="315241" _msttexthash="211783" %)
986 (((
987 Hum=0x0146/10=32.6
988 )))
989
990 (% _msthash="315242" _msttexthash="1569776" %)
991 (((
992 poll message flag & Ext=0x41,means reply data,Ext=1
993 )))
994
995 (% _msthash="315243" _msttexthash="1120509" %)
996 (((
997 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
998 )))
999
1000
1001
1002 == 2.7 Alarm Mode ==
1003
1004 (((
1005 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.
1006 )))
1007
1008 (((
1009 (% style="color:red" %)Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.
1010 )))
1011
1012 (((
1013 **AT COMMAND FOR ALARM MODE:**
1014 )))
1015
1016 (% _mstvisible="1" class="box infomessage" %)
1017 (((
1018 (((
1019 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled)
1020 )))
1021
1022 (((
1023 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1024 )))
1025
1026 (((
1027 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1028 )))
1029
1030 (((
1031 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
1032 )))
1033
1034 (((
1035 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1036 )))
1037 )))
1038
1039
1040
1041 == 2.8 LED Indicator ==
1042
1043 The LHT65 has a triple color LED which for easy showing different stage .
1044
1045 While user press ACT button, the LED will work as per LED status with ACT button.
1046
1047 In a normal working state:
1048
1049 * For each uplink, the BLUE LED or RED LED will blink once.
1050 BLUE LED when external sensor is connected.
1051 * RED LED when external sensor is not connected
1052 * For each success downlink, the PURPLE LED will blink once
1053
1054
1055
1056
1057 == 2.9 installation ==
1058
1059 (% _mstvisible="1" %)
1060 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
1061
1062
1063
1064 = 3. Sensors and Accessories =
1065
1066 == 3.1 E2 Extension Cable ==
1067
1068 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1069
1070 **1m long breakout cable for LHT65N. Features:**
1071
1072 * (((
1073 Use for AT Command， works for both LHT52/LHT65N
1074 )))
1075 * (((
1076 Update firmware for LHT65N, works for both LHT52/LHT65N
1077 )))
1078 * (((
1079 Supports ADC mode to monitor external ADC
1080 )))
1081 * (((
1082 Supports Interrupt mode
1083 )))
1084 * (((
1085 Exposed All pins from the LHT65N Type-C connector.
1086 )))
1087
1088 [[image:image-20220619092421-3.png||height="371" width="529"]]
1089
1090
1091
1092
1093 == 3.2 E3 Temperature Probe ==
1094
1095
1096 [[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"]]
1097
1098
1099 Temperature sensor with 2 meters cable long
1100
1101 * Resolution: 0.0625 °C
1102 * ±0.5°C accuracy from -10°C to +85°C
1103 * ±2°C accuracy from -55°C to +125°C
1104 * Operating Range: -40 ~~ 125 °C
1105 * Working voltage 2.35v ~~ 5v
1106
1107
1108
1109
1110 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1111
1112 (((
1113 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1114 )))
1115
1116 * (((
1117 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1118 )))
1119
1120 * (((
1121 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1122 )))
1123
1124 (((
1125 There are two kinds of commands to configure LHT65N, they are:
1126 )))
1127
1128 * (((
1129 (% style="color:#4f81bd" %)**General Commands**.
1130 )))
1131
1132 (((
1133 These commands are to configure:
1134 )))
1135
1136 1. (((
1137 General system settings like: uplink interval.
1138 )))
1139 1. (((
1140 LoRaWAN protocol & radio-related commands.
1141 )))
1142
1143 (((
1144 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]]
1145 )))
1146
1147 * (((
1148 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1149 )))
1150
1151 (((
1152 These commands are only valid for LHT65N, as below:
1153 )))
1154
1155
1156 == 4.1 Set Transmit Interval Time ==
1157
1158 Feature: Change LoRaWAN End Node Transmit Interval.
1159
1160 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1161
1162 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
1163
1164
1165 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1166
1167 Format: Command Code (0x01) followed by 3 bytes time value.
1168
1169 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1170
1171 * **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1172
1173 * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1174
1175
1176
1177
1178 == 4.2 Set External Sensor Mode ==
1179
1180 Feature: Change External Sensor Mode.
1181
1182 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1183
1184 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1185
1186
1187 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1188
1189 Total bytes: 2 ~~ 5 bytes
1190
1191 **Example:**
1192
1193 * 0xA201: Set external sensor type to E1
1194
1195 * 0xA209: Same as AT+EXT=9
1196
1197 * 0xA20702003c: Same as AT+SETCNT=60
1198
1199
1200
1201
1202 == 4.3 Enable/Disable uplink Temperature probe ID ==
1203
1204 (((
1205 Feature: If PID is enabled, device will send the temperature probe ID on:
1206 )))
1207
1208 * (((
1209 First Packet after OTAA Join
1210 )))
1211 * (((
1212 Every 24 hours since the first packet.
1213 )))
1214
1215 (((
1216 PID is default set to disable (0)
1217 )))
1218
1219 (% style="color:#4f81bd" %)**AT Command:**
1220
1221 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1222
1223
1224 (% style="color:#4f81bd" %)**Downlink Command:**
1225
1226 * **0xA800**  **~-~->** AT+PID=0
1227 * **0xA801**     **~-~->** AT+PID=1
1228
1229
1230
1231
1232 == 4.4 Set Password ==
1233
1234 Feature: Set device password, max 9 digits
1235
1236 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1237
1238 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1239
1240
1241 (% style="color:#4f81bd" %)**Downlink Command:**
1242
1243 No downlink command for this feature.
1244
1245
1246
1247 == 4.5 Quit AT Command ==
1248
1249 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1250
1251 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1252
1253 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1254
1255
1256 (% style="color:#4f81bd" %)**Downlink Command:**
1257
1258 No downlink command for this feature.
1259
1260
1261
1262 == 4.6 Set to sleep mode ==
1263
1264 Feature: Set device to sleep mode
1265
1266 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1267 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1268
1269 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1270
1271 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1272
1273
1274 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1275
1276 * There is no downlink command to set to Sleep mode.
1277
1278
1279
1280
1281 == 4.7 Set system time ==
1282
1283 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1284
1285 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1286
1287 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1288
1289
1290 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1291
1292 0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1293
1294
1295
1296 == 4.8 Set Time Sync Mode ==
1297
1298 (((
1299 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1300 )))
1301
1302 (((
1303 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.
1304 )))
1305
1306 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1307
1308 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1309
1310
1311 (% style="color:#4f81bd" %)**Downlink Command:**
1312
1313 0x28 01 ~/~/ Same As AT+SYNCMOD=1
1314 0x28 00 ~/~/ Same As AT+SYNCMOD=0
1315
1316
1317
1318 == 4.9 Set Time Sync Interval ==
1319
1320 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1321
1322 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1323
1324 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1325
1326
1327 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1328
1329 **0x29 0A** ~/~/ Same as AT+SYNCTDC=0x0A
1330
1331
1332
1333 == 4.10 Print data entries base on page. ==
1334
1335 Feature: Print the sector data from start page to stop page (max is 416 pages).
1336
1337 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1338
1339 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1340
1341
1342 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1343
1344 No downlink commands for feature
1345
1346
1347
1348 == 4.11 Print last few data entries. ==
1349
1350 Feature: Print the last few data entries
1351
1352 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1353
1354 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1355
1356
1357 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1358
1359 No downlink commands for feature
1360
1361
1362
1363 == 4.12 Clear Flash Record ==
1364
1365 Feature: Clear flash storage for data log feature.
1366
1367
1368 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1369
1370 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1371
1372
1373 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1374
1375 * Example: 0xA301 ~/~/Same as AT+CLRDTA
1376
1377
1378
1379
1380 == 4.13 Auto Send None-ACK messages ==
1381
1382 (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
1383 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.
1384
1385 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1386
1387 (% _msthash="315396" _msttexthash="734682" _mstvisible="1" %)
1388 The default factory setting is 0
1389
1390 (% _mstvisible="1" border="1" style="background-color:#ffffcc; color:green; width:450px" %)
1391 (% _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**
1392 (% _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
1393
1394 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1395
1396 * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1397
1398
1399
1400
1401 = 5. Battery & How to replace =
1402
1403 == 5.1 Battery Type ==
1404
1405 (((
1406 (((
1407 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.
1408 )))
1409 )))
1410
1411 (((
1412
1413 )))
1414
1415 (((
1416 (((
1417 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1418 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1419 )))
1420 )))
1421
1422 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1423
1424
1425 == 5.2 Replace Battery ==
1426
1427 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.
1428
1429 [[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"]]
1430
1431
1432 == 5.3 Battery Life Analyze ==
1433
1434 (((
1435 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:
1436 [[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]]
1437 )))
1438
1439 (((
1440
1441 )))
1442
1443 (((
1444 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]]
1445 )))
1446
1447
1448
1449 = 6. FAQ =
1450
1451 == 6.1 How to use AT Command? ==
1452
1453 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.
1454
1455 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1456
1457
1458 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1459
1460 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1461 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1462 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1463 * (% style="background-color:yellow" %)**USB to TTL 3.3V <~-~-> D-**
1464
1465 (((
1466 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.
1467 )))
1468
1469
1470 Input password and ATZ to activate LHT65N,As shown below:
1471
1472 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1473
1474
1475 (% _msthash="506066" _msttexthash="544869" %)
1476 AT Command List is as below:
1477
1478 (% _msthash="506067" _msttexthash="361920" %)
1479 AT+<CMD>? :  Help on <CMD>
1480
1481 (% _msthash="506068" _msttexthash="243061" %)
1482 AT+<CMD> :  Run <CMD>
1483
1484 (% _msthash="506069" _msttexthash="704197" %)
1485 AT+<CMD>=<value> :  Set the value
1486
1487 (% _msthash="506070" _msttexthash="455676" %)
1488 AT+<CMD>=? :  Get the value
1489
1490 (% _msthash="506071" _msttexthash="670553" %)
1491 AT+DEBUG:  Set more info output
1492
1493 (% _msthash="506072" _msttexthash="485888" %)
1494 ATZ:  Trig a reset of the MCU
1495
1496 (% _msthash="506073" _msttexthash="2068872" %)
1497 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1498
1499 (% _msthash="506074" _msttexthash="689169" %)
1500 AT+DEUI:  Get or Set the Device EUI
1501
1502 (% _msthash="506075" _msttexthash="960414" %)
1503 AT+DADDR:  Get or Set the Device Address
1504
1505 (% _msthash="506076" _msttexthash="1079897" %)
1506 AT+APPKEY:  Get or Set the Application Key
1507
1508 (% _msthash="506077" _msttexthash="1326143" %)
1509 AT+NWKSKEY:  Get or Set the Network Session Key
1510
1511 (% _msthash="506078" _msttexthash="1573000" %)
1512 AT+APPSKEY:  Get or Set the Application Session Key
1513
1514 (% _msthash="506079" _msttexthash="1041729" %)
1515 AT+APPEUI:  Get or Set the Application EUI
1516
1517 (% _msthash="506080" _msttexthash="2104206" %)
1518 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1519
1520 (% _msthash="506081" _msttexthash="3369288" %)
1521 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1522
1523 (% _msthash="506082" _msttexthash="1894529" %)
1524 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1525
1526 (% _msthash="506083" _msttexthash="3864172" %)
1527 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1528
1529 (% _msthash="506084" _msttexthash="1712204" %)
1530 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1531
1532 (% _msthash="506085" _msttexthash="1281202" %)
1533 AT+RX2FQ:  Get or Set the Rx2 window frequency
1534
1535 (% _msthash="506086" _msttexthash="2796781" %)
1536 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1537
1538 (% _msthash="506087" _msttexthash="3285165" %)
1539 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1540
1541 (% _msthash="506088" _msttexthash="3286179" %)
1542 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1543
1544 (% _msthash="506089" _msttexthash="4703803" %)
1545 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1546
1547 (% _msthash="506090" _msttexthash="4704999" %)
1548 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1549
1550 (% _msthash="506091" _msttexthash="1528683" %)
1551 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1552
1553 (% _msthash="506092" _msttexthash="757185" %)
1554 AT+NWKID:  Get or Set the Network ID
1555
1556 (% _msthash="506093" _msttexthash="1156597" %)
1557 AT+FCU:  Get or Set the Frame Counter Uplink
1558
1559 (% _msthash="506094" _msttexthash="1273987" %)
1560 AT+FCD:  Get or Set the Frame Counter Downlink
1561
1562 (% _msthash="506095" _msttexthash="859222" %)
1563 AT+CLASS:  Get or Set the Device Class
1564
1565 (% _msthash="506096" _msttexthash="384852" %)
1566 AT+JOIN:  Join network
1567
1568 (% _msthash="506097" _msttexthash="548626" %)
1569 AT+NJS:  Get the join status
1570
1571 (% _msthash="506098" _msttexthash="2546206" %)
1572 AT+SENDB:  Send hexadecimal data along with the application port
1573
1574 (% _msthash="506099" _msttexthash="1932307" %)
1575 AT+SEND:  Send text data along with the application port
1576
1577 (% _msthash="506100" _msttexthash="3560557" %)
1578 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1579
1580 (% _msthash="506101" _msttexthash="1429701" %)
1581 AT+RECV:  Print last received data in raw format
1582
1583 (% _msthash="506102" _msttexthash="1735981" %)
1584 AT+VER:  Get current image version and Frequency Band
1585
1586 (% _msthash="506103" _msttexthash="1189474" %)
1587 AT+CFM:  Get or Set the confirmation mode (0-1)
1588
1589 (% _msthash="506104" _msttexthash="1718210" %)
1590 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1591
1592 (% _msthash="506105" _msttexthash="1339403" %)
1593 AT+SNR:  Get the SNR of the last received packet
1594
1595 (% _msthash="506106" _msttexthash="1452009" %)
1596 AT+RSSI:  Get the RSSI of the last received packet
1597
1598 (% _msthash="506107" _msttexthash="2768142" %)
1599 AT+TDC:  Get or set the application data transmission interval in ms
1600
1601 (% _msthash="506108" _msttexthash="1083914" %)
1602 AT+PORT:  Get or set the application port
1603
1604 (% _msthash="506109" _msttexthash="622440" %)
1605 AT+DISAT:  Disable AT commands
1606
1607 (% _msthash="506110" _msttexthash="868361" %)
1608 AT+PWORD: Set password, max 9 digits
1609
1610 (% _msthash="506111" _msttexthash="2210299" %)
1611 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1612
1613 (% _msthash="506112" _msttexthash="2113462" %)
1614 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1615
1616 (% _msthash="506113" _msttexthash="2087423" %)
1617 AT+PDTA:  Print the sector data from start page to stop page
1618
1619 (% _msthash="506114" _msttexthash="1063127" %)
1620 AT+PLDTA:  Print the last few sets of data
1621
1622 (% _msthash="506115" _msttexthash="1999426" %)
1623 AT+CLRDTA:  Clear the storage, record position back to 1st
1624
1625 (% _msthash="506116" _msttexthash="442130" %)
1626 AT+SLEEP:  Set sleep mode
1627
1628 (% _msthash="506117" _msttexthash="1080222" %)
1629 AT+EXT:  Get or Set external sensor model
1630
1631 (% _msthash="506118" _msttexthash="1309490" %)
1632 AT+BAT:  Get the current battery voltage in mV
1633
1634 (% _msthash="506119" _msttexthash="813891" %)
1635 AT+CFG:  Print all configurations
1636
1637 (% _msthash="506120" _msttexthash="551707" %)
1638 AT+WMOD:  Get or Set Work Mode
1639
1640 (% _msthash="506121" _msttexthash="2631499" %)
1641 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1642
1643 (% _msthash="506122" _msttexthash="3907150" %)
1644 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1645
1646 (% _msthash="506123" _msttexthash="854620" %)
1647 AT+SETCNT:  Set the count at present
1648
1649 (% _msthash="506124" _msttexthash="2554877" %)
1650 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1651
1652 (% _msthash="506125" _msttexthash="771849" %)
1653 AT+RPL:  Get or set response level
1654
1655 (% _msthash="506126" _msttexthash="1484314" %)
1656 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1657
1658 (% _msthash="506127" _msttexthash="741728" %)
1659 AT+LEAPSEC:  Get or Set Leap Second
1660
1661 (% _msthash="506128" _msttexthash="1694017" %)
1662 AT+SYNCMOD:  Get or Set time synchronization method
1663
1664 (% _msthash="506129" _msttexthash="2235948" %)
1665 AT+SYNCTDC:  Get or set time synchronization interval in day
1666
1667 (% _msthash="506130" _msttexthash="425542" %)
1668 AT+PID:  Get or set the PID
1669
1670
1671 == 6.2 Where to use AT commands and Downlink commands ==
1672
1673 (% _msthash="506131" _msttexthash="14585714" %)
1674 AT commands：
1675
1676 [[image:image-20220620153708-1.png||height="603" width="723"]]
1677
1678 (% _msthash="506132" _msttexthash="337922" %)
1679 Downlink commands:
1680
1681
1682 (% _msthash="506133" _msttexthash="33046" %)
1683 **TTN:**
1684
1685 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1686
1687
1688 (% _msthash="506134" _msttexthash="11113791" %)
1689 **Helium：**
1690
1691 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1692
1693
1694 (% _msthash="506135" _msttexthash="4159844" %)
1695 **Chirpstack:The downlink window will not be displayed until the network is accessed**
1696
1697 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1698
1699 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1700
1701
1702 (% _msthash="506136" _msttexthash="39286" %)
1703 **Aws:**
1704
1705 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1706
1707
1708
1709 == 6.3 How to change the uplink interval？ ==
1710
1711 [[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"]]
1712
1713
1714
1715 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1716
1717 [[image:image-20220615153355-1.png]]
1718
1719 [[image:1655802313617-381.png]]
1720
1721
1722 (((
1723 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.
1724 )))
1725
1726
1727 Input password and ATZ to activate LHT65N,As shown below:
1728
1729 [[image:image-20220615154519-3.png||height="672" width="807"]]
1730
1731
1732
1733 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1734
1735
1736 [[image:image-20220615153355-1.png]]
1737
1738
1739 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1740
1741 [[image:image-20220615170542-5.png]]
1742
1743
1744 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1745
1746 (% _msthash="506146" _msttexthash="52173160" %)
1747 First connect the four lines；(% style="display:none" %)
1748
1749 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1750
1751
1752 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1753
1754 [[image:image-20220621170938-2.png]]
1755
1756
1757 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1758
1759 [[image:image-20220615171334-6.png]]
1760
1761
1762 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1763
1764
1765 When this interface appears, it indicates that the download has been completed.
1766
1767 [[image:image-20220620160723-8.png]]
1768
1769
1770 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1771
1772
1773 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1774
1775 [[image:image-20220623110706-1.png]]
1776
1777
1778 [[image:image-20220623112117-4.png||height="459" width="343"]]
1779
1780 (((
1781 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.
1782 )))
1783
1784
1785 Input password and ATZ to activate LHT65N,As shown below:
1786
1787 [[image:image-20220615154519-3.png||height="672" width="807"]]
1788
1789
1790 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1791
1792 [[image:image-20220623110706-1.png]]
1793
1794 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1795
1796 [[image:image-20220615170542-5.png]]
1797
1798
1799 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1800
1801 (% _msthash="506146" _msttexthash="52173160" %)
1802 First connect the four lines；
1803
1804 (% _msthash="506146" _msttexthash="52173160" %)
1805 [[image:image-20220623113959-5.png||height="528" width="397"]]
1806
1807 (% _msthash="506146" _msttexthash="52173160" %)
1808 Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
1809
1810 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1811
1812 [[image:image-20220615171334-6.png]]
1813
1814
1815 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1816
1817
1818 When this interface appears, it indicates that the download has been completed.
1819
1820 [[image:image-20220620160723-8.png]]
1821
1822
1823 Finally,restart reset device again
1824
1825
1826 = 7. Order Info =
1827
1828
1829 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
1830
1831 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1832
1833 (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1834
1835 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1836
1837 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1838
1839 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1840
1841 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1842
1843 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1844
1845 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1846
1847 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1848
1849 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1850
1851 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1852
1853
1854
1855
1856 = 8. Packing Info =
1857
1858
1859 **Package Includes**:
1860
1861 * LHT65N Temperature & Humidity Sensor x 1
1862 * Optional external sensor
1863
1864 **Dimension and weight**:
1865
1866 * Device Size:  10 x 10 x 3.5 cm
1867 * Device Weight: 120.5g
1868
1869
1870
1871
1872 = 9. Reference material =
1873
1874 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1875
1876
1877
1878
1879 = 10. FCC Warning =
1880
1881 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1882
1883 (1) This device may not cause harmful interference；
1884
1885 (2) this device must accept any interference received, including interference that may cause undesired operation.