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Version 189.1 by Bei Jinggeng on 2022/07/06 13:48
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9 (% _msthash="315238" _msttexthash="18964465" _mstvisible="3" %)**Table of Contents：**
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11 {{toc/}}
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15
16
17 = 1. Introduction =
18
19 == 1.1 What is LHT65N Temperature & Humidity Sensor ==
20
21
22 (((
23 The Dragino LHT65N Temperature & Humidity sensor is a Long Range LoRaWAN Sensor. It includes a (% style="color:#4f81bd" %)**built-in Temperature & Humidity sensor**(%%) and has an external sensor connector to connect to an external (% style="color:#4f81bd" %)**Temperature Sensor.**
24 )))
25
26 (((
27 The LHT65N allows users to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, building automation, and so on.
28 )))
29
30 (((
31 LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
32 )))
33
34 (((
35 LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
36 )))
37
38 (((
39 LHT65N supports (% style="color:#4f81bd" %)**Datalog Feature**(%%). It will record the data when there is no network coverage and users can retrieve the sensor value later to ensure no miss for every sensor reading.
40 )))
41
42 (((
43 *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
44 )))
45
46
47 == 1.2 Features ==
48
49 * Wall mountable
50 * LoRaWAN v1.0.3 Class A protocol
51 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
52 * AT Commands to change parameters
53 * Remote configure parameters via LoRaWAN Downlink
54 * Firmware upgradeable via program port
55 * Built-in 2400mAh battery for up to 10 years of use.
56 * Built-in Temperature & Humidity sensor
57 * Optional External Sensors
58 * Tri-color LED to indicate working status
59 * Datalog feature
60
61
62
63 == 1.3 Specification ==
64
65
66 **Built-in Temperature Sensor:**
67
68 * Resolution: 0.01 °C
69 * Accuracy Tolerance : Typ ±0.3 °C
70 * Long Term Drift: < 0.02 °C/yr
71 * Operating Range: -40 ~~ 85 °C
72
73 **Built-in Humidity Sensor:**
74
75 * Resolution: 0.04 %RH
76 * Accuracy Tolerance : Typ ±3 %RH
77 * Long Term Drift: < 0.02 °C/yr
78 * Operating Range: 0 ~~ 96 %RH
79
80 **External Temperature Sensor:**
81
82 * Resolution: 0.0625 °C
83 * ±0.5°C accuracy from -10°C to +85°C
84 * ±2°C accuracy from -55°C to +125°C
85 * Operating Range: -55 °C ~~ 125 °C
86
87
88
89 = 2. Connect LHT65N to IoT Server =
90
91 == 2.1 How does LHT65N work? ==
92
93 (((
94 LHT65N is configured as LoRaWAN OTAA Class A mode by default. Each LHT65N is shipped with a worldwide unique set of OTAA keys. To use LHT65N in a LoRaWAN network, first, we need to put the OTAA keys in LoRaWAN Network Server and then activate LHT65N.
95 )))
96
97 (((
98 If LHT65N is under the coverage of this LoRaWAN network. LHT65N can join the LoRaWAN network automatically. After successfully joining, LHT65N will start to measure environment temperature and humidity, and start to transmit sensor data to the LoRaWAN server. The default period for each uplink is 20 minutes.
99 )))
100
101
102 == 2.2 How to Activate LHT65N? ==
103
104 (((
105 The LHT65N has two working modes:
106 )))
107
108 * (((
109 (% style="color:blue" %)**Deep Sleep Mode**(%%): LHT65N doesn’t have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.
110 )))
111 * (((
112 (% style="color:blue" %)**Working Mode**(%%):  In this mode, LHT65N works as LoRaWAN Sensor mode to Join LoRaWAN network and send out the sensor data to the server. Between each sampling/tx/rx periodically, LHT65N will be in STOP mode (IDLE mode), in STOP mode, LHT65N has the same power consumption as Deep Sleep mode. 
113 )))
114
115 (((
116 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
117 )))
118
119
120 [[image:image-20220515123819-1.png||_mstalt="430742" _mstvisible="3" height="379" width="317"]]
121
122 [[image:image-20220525110604-2.png||_mstalt="427531" _mstvisible="3"]]
123
124
125
126 == 2.3 Example to join LoRaWAN network ==
127
128 (% _msthash="315240" _msttexthash="9205482" _mstvisible="1" class="wikigeneratedid" %)
129 This section shows an example of how to join the TTN V3 LoRaWAN IoT server. Use with other LoRaWAN IoT servers is of a similar procedure.
130
131 (% _mstvisible="1" class="wikigeneratedid" %)
132 [[image:image-20220522232442-1.png||_mstalt="427830" _mstvisible="3" height="387" width="648"]]
133
134
135 (((
136 Assume the LPS8N is already set to connect to [[TTN V3 network>>url:https://eu1.cloud.thethings.network||_mstvisible="2"]], So it provides network coverage for LHT65N. Next we need to add the LHT65N device in TTN V3:
137 )))
138
139
140
141 === 2.3.1 Step 1: Create Device n TTN ===
142
143 (((
144 Create a device in TTN V3 with the OTAA keys from LHT65N.
145 )))
146
147 (((
148 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
149 )))
150
151 [[image:image-20220617150003-1.jpeg]]
152
153 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
154
155 Add APP EUI in the application.
156
157
158 [[image:image-20220522232916-3.png||_mstalt="430495" _mstvisible="3"]]
159
160
161 [[image:image-20220522232932-4.png||_mstalt="430157" _mstvisible="3"]]
162
163
164 [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
165
166
167 Note: LHT65N use same payload as LHT65.
168
169
170 [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
171
172
173 Input APP EUI,  APP KEY and DEV EUI:
174
175
176 [[image:image-20220522233118-7.png||_mstalt="430430" _mstvisible="3"]]
177
178
179
180
181 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
182
183 (((
184 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.
185 )))
186
187 [[image:image-20220522233300-8.png||_mstalt="428389" _mstvisible="3" height="219" width="722"]]
188
189
190
191
192 == 2.4 Uplink Payload ==
193
194 (((
195 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.
196 )))
197
198 (((
199 After each uplink, the (% _mstvisible="3" style="color:blue" %)**BLUE LED**(%%) will blink once.
200 )))
201
202 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:426px" %)
203 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 97px;" %)(% _mstvisible="5" %)
204 (((
205 (% _mstvisible="6" %)
206 (% _msthash="1817478" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
207 )))|=(% _mstvisible="4" style="width: 39px;" %)(% _mstvisible="5" %)
208 (((
209 (% _mstvisible="6" %)
210 (% _msthash="1817479" _msttexthash="4550" _mstvisible="8" %)**2**
211 )))|=(% _mstvisible="4" style="width: 100px;" %)(% _mstvisible="5" %)
212 (((
213 (% _mstvisible="6" %)
214 (% _msthash="1817480" _msttexthash="4550" _mstvisible="8" %)**2**
215 )))|=(% _mstvisible="4" style="width: 77px;" %)(% _mstvisible="5" %)
216 (((
217 (% _mstvisible="6" %)
218 (% _msthash="1817481" _msttexthash="4550" _mstvisible="8" %)**2**
219 )))|=(% _mstvisible="4" style="width: 47px;" %)(% _mstvisible="5" %)
220 (((
221 (% _mstvisible="6" %)
222 (% _msthash="1817482" _msttexthash="4459" _mstvisible="8" %)**1**
223 )))|=(% _mstvisible="4" style="width: 51px;" %)(% _mstvisible="5" %)
224 (((
225 (% _mstvisible="6" %)
226 (% _msthash="1817483" _msttexthash="4732" _mstvisible="8" %)**4**
227 )))
228 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:97px" %)(% _mstvisible="5" %)
229 (((
230 (% _mstvisible="6" %)
231 (% _msthash="1817484" _msttexthash="60203" _mstvisible="8" %)**Value**
232 )))|(% _mstvisible="4" style="width:39px" %)(% _mstvisible="5" %)
233 (((
234 (% _mstvisible="6" %)
235 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo" _msthash="1817485" _msttexthash="22594" _mstvisible="7"]]
236 )))|(% _mstvisible="4" style="width:100px" %)(% _mstvisible="5" %)
237 (((
238 (% _mstvisible="6" %)
239 (((
240 (% _mstvisible="7" %)
241 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224742" _msttexthash="405769" _mstvisible="8"]]
242 )))
243 )))|(% _mstvisible="4" style="width:77px" %)(% _mstvisible="5" %)
244 (((
245 (% _mstvisible="6" %)
246 (((
247 (% _mstvisible="7" %)
248 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2224743" _msttexthash="105872" _mstvisible="8"]]
249 )))
250
251 (% _mstvisible="6" %)
252 (((
253 (% _mstvisible="7" %)
254 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224744" _msttexthash="117429" _mstvisible="8"]]
255 )))
256 )))|(% _mstvisible="4" style="width:47px" %)(% _mstvisible="5" %)
257 (((
258 (% _mstvisible="6" %)
259 [[Ext>>||anchor="H2.4.5Ext23" _msthash="1817486" _msttexthash="32331" _mstvisible="7"]] #
260 )))|(% _mstvisible="4" style="width:51px" %)(% _mstvisible="5" %)
261 (((
262 (% _mstvisible="6" %)
263 [[Ext value>>||anchor="H2.4.6Extvalue" _msthash="1817487" _msttexthash="116545" _mstvisible="7"]]
264 )))
265
266 * The First 6 bytes: has fix meanings for every LHT65N.
267 * The 7th byte (EXT #): defines the external sensor model.
268 * 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.)
269
270
271
272 === 2.4.1 Decoder in TTN V3 ===
273
274 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.
275
276 Below is the position to put the decoder and LHT65N decoder can be download from here:
277
278
279 [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0 >>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0||_msthash="315253" _msttexthash="3509064" _mstvisible="2"]]
280
281
282 [[image:image-20220522234118-10.png||_mstalt="451464" _mstvisible="3" height="353" width="729"]]
283
284
285
286
287 === 2.4.2 BAT-Battery Info ===
288
289 These two bytes of BAT include the battery state and the actually voltage
290
291 [[image:image-20220523152839-18.png||_mstalt="457613" _mstvisible="3"]]
292
293
294 [[image:image-20220522235639-1.png||_mstalt="431392" _mstvisible="3" height="139" width="727"]]
295
296
297 Check the battery voltage for LHT65N.
298
299 * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
300 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
301
302
303
304 === 2.4.3 Built-in Temperature ===
305
306 [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
307
308 * Temperature:  0x0ABB/100=27.47℃
309
310 [[image:image-20220522235639-3.png||_mstalt="432120" _mstvisible="3"]]
311
312 * Temperature:  (0xF5C6-65536)/100=-26.18℃
313
314
315
316 === 2.4.4 Built-in Humidity ===
317
318 [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
319
320 * Humidity:    0x025C/10=60.4%
321
322
323
324 === 2.4.5 Ext # ===
325
326 Bytes for External Sensor:
327
328 [[image:image-20220523152822-17.png||_mstalt="454545" _mstvisible="3"]]
329
330
331
332 === 2.4.6 Ext value ===
333
334 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
335
336
337 [[image:image-20220522235639-5.png||_mstalt="432848" _mstvisible="3"]]
338
339
340 * DS18B20 temp=0x0ADD/100=27.81℃
341
342 The last 2 bytes of data are meaningless
343
344 [[image:image-20220522235639-6.png||_mstalt="433212" _mstvisible="3"]]
345
346
347 * External temperature= (0xF54F-65536)/100=-27.37℃
348
349 The last 2 bytes of data are meaningless
350
351 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
352
353
354
355 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
356
357 (((
358 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:
359 )))
360
361 (((
362
363 )))
364
365 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
366 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 96px;" %)(% _mstvisible="5" %)
367 (((
368 (% _mstvisible="6" %)
369 (% _msthash="1817488" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
370 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
371 (((
372 (% _mstvisible="6" %)
373 (% _msthash="1817489" _msttexthash="4550" _mstvisible="8" %)**2**
374 )))|=(% _mstvisible="4" style="width: 99px;" %)(% _mstvisible="5" %)
375 (((
376 (% _mstvisible="6" %)
377 (% _msthash="1817490" _msttexthash="4550" _mstvisible="8" %)**2**
378 )))|=(% _mstvisible="4" style="width: 132px;" %)(% _mstvisible="5" %)
379 (((
380 (% _mstvisible="6" %)
381 (% _msthash="1817491" _msttexthash="4550" _mstvisible="8" %)**2**
382 )))|=(% _mstvisible="4" style="width: 54px;" %)(% _mstvisible="5" %)
383 (((
384 (% _mstvisible="6" %)
385 (% _msthash="1817492" _msttexthash="4459" _mstvisible="8" %)**1**
386 )))|=(% _mstvisible="4" style="width: 64px;" %)(% _mstvisible="5" %)
387 (((
388 (% _mstvisible="6" %)
389 (% _msthash="1817493" _msttexthash="4732" _mstvisible="8" %)**4**
390 )))
391 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:96px" %)(% _mstvisible="5" %)
392 (((
393 (% _mstvisible="6" %)
394 (% _msthash="1817494" _msttexthash="60203" _mstvisible="8" %)**Value**
395 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
396 (((
397 (% _mstvisible="6" %)
398 [[External temperature>>||anchor="H4.2SetExternalSensorMode" _msthash="1817495" _msttexthash="426517" _mstvisible="7"]]
399 )))|(% _mstvisible="4" style="width:99px" %)(% _mstvisible="5" %)
400 (((
401 (% _mstvisible="6" %)
402 (((
403 (% _mstvisible="7" %)
404 [[Built-In>>||anchor="H2.4.3Built-inTemperature" _msthash="2224745" _msttexthash="100464" _mstvisible="8"]]
405 )))
406
407 (% _mstvisible="6" %)
408 (((
409 (% _mstvisible="7" %)
410 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224746" _msttexthash="184041" _mstvisible="8"]]
411 )))
412 )))|(% _mstvisible="4" style="width:132px" %)(% _mstvisible="5" %)
413 (((
414 (% _mstvisible="6" %)
415 (((
416 (% _msthash="2224747" _msttexthash="136331" _mstvisible="7" %)
417 BAT Status &
418 )))
419
420 (% _mstvisible="6" %)
421 (((
422 (% _mstvisible="7" %)
423 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224748" _msttexthash="311181" _mstvisible="8"]]
424 )))
425 )))|(% _mstvisible="4" style="width:54px" %)(% _mstvisible="5" %)
426 (((
427 (% _msthash="1817496" _msttexthash="147225" _mstvisible="6" %)
428 Status & Ext
429 )))|(% _mstvisible="4" style="width:64px" %)(% _mstvisible="5" %)
430 (((
431 (% _mstvisible="6" %)
432 (((
433 (% _mstvisible="7" %)
434 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2224749" _msttexthash="227175" _mstvisible="8"]]
435 )))
436 )))
437
438 (% _mstvisible="1" %)
439 * (% _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**
440
441 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:469px" %)
442 (% _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]
443 (% _mstvisible="3" %)|(% _msthash="1230921" _msttexthash="60203" _mstvisible="4" style="width:65px" %)Value|(% _mstvisible="4" style="width:267px" %)(% _mstvisible="5" %)
444 (((
445 (% _msthash="1817497" _msttexthash="128427" _mstvisible="6" %)
446 BAT Status
447
448 (% _msthash="1817498" _msttexthash="472784" _mstvisible="6" %)
449 00(b): Ultra Low ( BAT <= 2.50v)
450
451 (% _msthash="1817499" _msttexthash="483678" _mstvisible="6" %)
452 01(b): Low  (2.50v <=BAT <= 2.55v)
453
454 (% _msthash="1817500" _msttexthash="440791" _mstvisible="6" %)
455 10(b): OK   (2.55v <= BAT <=2.65v)
456
457 (% _msthash="1817501" _msttexthash="334191" _mstvisible="6" %)
458 11(b): Good   (BAT >= 2.65v)
459 )))|(% _mstvisible="4" style="width:134px" %)(% _mstvisible="5" %)
460 (((
461 (% _mstvisible="6" %)
462 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="1817502" _msttexthash="311181" _mstvisible="7"]]
463
464 (% _mstvisible="6" %)
465
466 )))
467
468 * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
469
470 [[image:image-20220523152434-16.png||_mstalt="453921" _mstvisible="3"]]
471
472 * Poll Message Flag:  1: This message is a poll message reply, 0: means this is a normal uplink.
473 * 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.
474 * 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)
475
476
477
478 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
479
480 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
481
482 be used to power the external ADC sensor; user can control the power on time for this
483
484 sensor by setting:
485
486 AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)Time to power this sensor, from 0 ~~ 65535ms
487
488 For example:
489
490 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
491
492
493 Or use **downlink command A2** to set the same.
494
495 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
496
497 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.
498
499 [[image:image-20220628150112-1.png||height="241" width="285"]]
500
501
502 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
503
504 [[image:image-20220628150714-4.png]]
505
506
507 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.
508
509 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
510
511 [[image:image-20220628151005-5.png]]
512
513
514 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
515
516 [[image:image-20220628151056-6.png]]
517
518
519 3) Within range
520
521 [[image:image-20220628151143-7.png]]
522
523
524
525 == 2.5 Show data on Datacake ==
526
527 (((
528 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:
529 )))
530
531 (((
532
533 )))
534
535 (((
536 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
537 )))
538
539 (((
540 (% 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.
541 )))
542
543 (((
544
545 )))
546
547 (((
548 Add Datacake:
549 )))
550
551
552 [[image:image-20220523000825-7.png||_mstalt="429884" _mstvisible="3" height="262" width="583"]]
553
554
555
556 Select default key as Access Key:
557
558
559 [[image:image-20220523000825-8.png||_mstalt="430248" _mstvisible="3" height="453" width="406"]]
560
561
562 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/||_mstvisible="2"]]) , add LHT65 device.
563
564
565 [[image:image-20220523000825-9.png||_mstalt="430612" _mstvisible="3" height="366" width="392"]]
566
567
568 [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
569
570
571
572 == 2.6 Datalog Feature ==
573
574 (((
575 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.
576 )))
577
578
579
580 === 2.6.1 Ways to get datalog via LoRaWAN ===
581
582 There are two methods:
583
584 1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specifying time range.
585 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.
586
587 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
588
589 [[image:image-20220703111700-2.png||height="381" width="1119"]]
590
591
592 === 2.6.2 Unix TimeStamp ===
593
594
595 LHT65N uses Unix TimeStamp format based on
596
597
598 [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
599
600
601
602 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
603
604 Below is the converter example
605
606 [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
607
608 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
609
610
611
612 === 2.6.3 Set Device Time ===
613
614 (((
615 There are two ways to set device's time:
616 )))
617
618 (((
619 **~1. Through LoRaWAN MAC Command (Default settings)**
620 )))
621
622 (((
623 User need to set SYNCMOD=1 to enable sync time via MAC command.
624 )))
625
626 (((
627 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).
628 )))
629
630 (((
631 (% 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.
632 )))
633
634 (((
635
636 )))
637
638 (((
639 **2. Manually Set Time**
640 )))
641
642 (((
643 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
644 )))
645
646
647
648 === 2.6.4 Poll sensor value ===
649
650 User can poll sensor value based on timestamps from the server. Below is the downlink command.
651
652 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
653
654
655 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.
656
657 For example, downlink command **31 5FC5F350 5FC6 0160 05**
658
659 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
660
661 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
662
663
664
665 === 2.6.5 Datalog Uplink payload ===
666
667 (% _msthash="315267" _msttexthash="2245087" _mstvisible="1" %)
668 The Datalog poll reply uplink will use below payload format.
669
670 (% _mstvisible="1" %)
671 (((
672 (% _mstvisible="2" %)
673 (% _msthash="506080" _msttexthash="451581" _mstvisible="4" %)**Retrieval data payload**
674 )))
675
676 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
677 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 93px;" %)(% _mstvisible="5" %)
678 (((
679 (% _mstvisible="6" %)
680 (((
681 (% _mstvisible="7" %)
682 (% _msthash="2224750" _msttexthash="161122" _mstvisible="9" %)**Size(bytes)**
683 )))
684 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
685 (((
686 (% _mstvisible="6" %)
687 (((
688 (% _mstvisible="7" %)
689 (% _msthash="2224751" _msttexthash="4550" _mstvisible="9" %)**2**
690 )))
691 )))|=(% _mstvisible="4" style="width: 102px;" %)(% _mstvisible="5" %)
692 (((
693 (% _mstvisible="6" %)
694 (((
695 (% _mstvisible="7" %)
696 (% _msthash="2224752" _msttexthash="4550" _mstvisible="9" %)**2**
697 )))
698 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
699 (((
700 (% _mstvisible="6" %)
701 (((
702 (% _mstvisible="7" %)
703 (% _msthash="2224753" _msttexthash="4550" _mstvisible="9" %)**2**
704 )))
705 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
706 (((
707 (% _mstvisible="6" %)
708 (((
709 (% _mstvisible="7" %)
710 (% _msthash="2224754" _msttexthash="4459" _mstvisible="9" %)**1**
711 )))
712 )))|=(% _mstvisible="4" style="width: 48px;" %)(% _mstvisible="5" %)
713 (((
714 (% _mstvisible="6" %)
715 (((
716 (% _mstvisible="7" %)
717 (% _msthash="2224755" _msttexthash="4732" _mstvisible="9" %)**4**
718 )))
719 )))
720 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:93px" %)(% _mstvisible="5" %)
721 (((
722 (% _mstvisible="6" %)
723 (((
724 (% _mstvisible="7" %)
725 (% _msthash="2224756" _msttexthash="60203" _mstvisible="9" %)**Value**
726 )))
727 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
728 (((
729 (% _mstvisible="6" %)
730 (((
731 (% _mstvisible="7" %)
732 [[External sensor data>>||anchor="H2.4.6Extvalue" _msthash="2224757" _msttexthash="386672" _mstvisible="8"]]
733 )))
734 )))|(% _mstvisible="4" style="width:102px" %)(% _mstvisible="5" %)
735 (((
736 (% _mstvisible="6" %)
737 (((
738 (% _mstvisible="7" %)
739 (((
740 (% _mstvisible="8" %)
741 [[Built In>>||anchor="H2.4.3Built-inTemperature" _msthash="2671864" _msttexthash="91065" _mstvisible="9"]]
742 )))
743 )))
744
745 (% _mstvisible="6" %)
746 (((
747 (% _mstvisible="7" %)
748 (((
749 (% _mstvisible="8" %)
750 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2671865" _msttexthash="184041" _mstvisible="9"]]
751 )))
752 )))
753 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
754 (((
755 (% _mstvisible="6" %)
756 (((
757 (% _mstvisible="7" %)
758 (((
759 (% _mstvisible="8" %)
760 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2671866" _msttexthash="105872" _mstvisible="9"]]
761 )))
762 )))
763
764 (% _mstvisible="6" %)
765 (((
766 (% _mstvisible="7" %)
767 (((
768 (% _mstvisible="8" %)
769 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2671867" _msttexthash="117429" _mstvisible="9"]]
770 )))
771 )))
772 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
773 (((
774 (% _mstvisible="6" %)
775 (((
776 (% _msthash="2224758" _msttexthash="390390" _mstvisible="7" %)
777 Poll message flag & Ext
778 )))
779 )))|(% _mstvisible="4" style="width:48px" %)(% _mstvisible="5" %)
780 (((
781 (% _mstvisible="6" %)
782 (((
783 (% _mstvisible="7" %)
784 (((
785 (% _mstvisible="8" %)
786 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2671868" _msttexthash="227175" _mstvisible="9"]]
787 )))
788 )))
789
790 (% _mstvisible="6" %)
791 (((
792 (% _mstvisible="7" %)
793 (((
794 (% _mstvisible="8" %)
795
796 )))
797 )))
798 )))
799
800 (% _mstvisible="1" %)
801 (% _msthash="315268" _msttexthash="390390" _mstvisible="3" %)**Poll message flag & Ext**
802
803 (% _mstvisible="1" %)
804 [[image:image-20220523152208-14.png||_mstalt="452920" _mstvisible="3"]]
805
806 (% _mstvisible="1" %)
807 (((
808 (% _mstvisible="2" %)
809 (((
810 (% _msthash="736723" _msttexthash="2005003" _mstvisible="3" %)
811 (((
812 Poll Message Flag: 1: This message is a poll message reply.
813 )))
814 )))
815 )))
816
817 (% _mstvisible="1" %)
818 * (% _mstvisible="3" %)
819 (((
820 (% _mstvisible="4" %)
821 (((
822 (% _msthash="1197157" _msttexthash="561548" _mstvisible="5" %)
823 (((
824 Poll Message Flag is set to 1.
825 )))
826 )))
827 )))
828 * (% _mstvisible="3" %)
829 (((
830 (% _mstvisible="4" %)
831 (((
832 (% _msthash="1197158" _msttexthash="9284964" _mstvisible="5" %)
833 (((
834 Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
835 )))
836 )))
837 )))
838
839 (% _mstvisible="1" %)
840 (((
841 (% _mstvisible="2" %)
842 (((
843 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
844 (((
845
846 )))
847
848 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
849 (((
850 For example, in US915 band, the max payload for different DR is:
851 )))
852 )))
853 )))
854
855 (% _mstvisible="1" %)
856 (((
857 (% _mstvisible="2" %)
858 (((
859 (% _msthash="736725" _msttexthash="1065532" _mstvisible="3" %)
860 (((
861 a) DR0: max is 11 bytes so one entry of data
862 )))
863 )))
864 )))
865
866 (% _mstvisible="1" %)
867 (((
868 (% _mstvisible="2" %)
869 (((
870 (% _msthash="736726" _msttexthash="3265665" _mstvisible="3" %)
871 (((
872 b) DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
873 )))
874 )))
875 )))
876
877 (% _mstvisible="1" %)
878 (((
879 (% _mstvisible="2" %)
880 (((
881 (% _msthash="736727" _msttexthash="1454115" _mstvisible="3" style="text-align: left;" %)
882 (((
883 c) DR2: total payload includes 11 entries of data
884 )))
885 )))
886 )))
887
888 (% _mstvisible="1" %)
889 (((
890 (% _mstvisible="2" %)
891 (((
892 (% _msthash="736728" _msttexthash="1483924" _mstvisible="3" style="text-align: left;" %)
893 (((
894 d) DR3: total payload includes 22 entries of data.
895 )))
896 )))
897 )))
898
899 (% _mstvisible="1" %)
900 (((
901 (% _mstvisible="2" %)
902 (((
903 (% _msthash="736729" _msttexthash="5848349" _mstvisible="3" style="text-align: left;" %)
904 (((
905 If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0   
906 )))
907 )))
908 )))
909
910
911 (% _mstvisible="1" style="text-align: left;" %)
912 (% _msthash="315269" _msttexthash="104767" _mstvisible="3" %)**Example:**
913
914 (% _msthash="315270" _msttexthash="913822" _mstvisible="1" style="text-align: left;" %)
915 If LHT65N has below data inside Flash:
916
917 (% _mstvisible="1" %)
918 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
919
920 (% _mstvisible="1" %)
921 (((
922 (% _msthash="506081" _msttexthash="1663961" _mstvisible="2" style="text-align: left;" %)
923 If user sends below downlink command: (% _mstvisible="3" style="background-color:yellow" %)3160065F9760066DA705
924 )))
925
926 (% _mstvisible="1" %)
927 (((
928 (% _msthash="506082" _msttexthash="1092494" _mstvisible="2" style="text-align: left;" %)
929 Where : Start time: 60065F97 = time 21/1/19 04:27:03
930 )))
931
932 (% _mstvisible="1" %)
933 (((
934 (% _msthash="506083" _msttexthash="737269" _mstvisible="2" style="text-align: left;" %)
935 Stop time 60066DA7= time 21/1/19 05:27:(% _msthash="903005" _msttexthash="9672" _mstvisible="2" %)03
936 )))
937
938 (% _mstvisible="1" %)
939 (((
940 (% _mstvisible="2" %)
941
942 )))
943
944 (% _mstvisible="1" %)
945 (((
946 (% _msthash="506084" _msttexthash="751218" _mstvisible="2" style="text-align: left;" %)
947 LHT65N will uplink this payload.
948 )))
949
950 (% _mstvisible="1" %)
951 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
952
953 (% _msthash="315271" _msttexthash="12012546" _mstvisible="1" style="text-align: left;" %)
954 (((
955 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
956 )))
957
958 (% _msthash="315237" _msttexthash="1385839" %)
959 (((
960 Where the first 11 bytes is for the first entry:
961 )))
962
963 (% _msthash="315238" _msttexthash="274846" %)
964 (((
965 7FFF089801464160065F97
966 )))
967
968 (% _msthash="315239" _msttexthash="617435" %)
969 (((
970 Ext sensor data=0x7FFF/100=327.67
971 )))
972
973 (% _msthash="315240" _msttexthash="270543" %)
974 (((
975 Temp=0x0898/100=22.00
976 )))
977
978 (% _msthash="315241" _msttexthash="211783" %)
979 (((
980 Hum=0x0146/10=32.6
981 )))
982
983 (% _msthash="315242" _msttexthash="1569776" %)
984 (((
985 poll message flag & Ext=0x41,means reply data,Ext=1
986 )))
987
988 (% _msthash="315243" _msttexthash="1120509" %)
989 (((
990 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
991 )))
992
993
994
995 == 2.7 Alarm Mode ==
996
997 (((
998 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.
999 )))
1000
1001 (((
1002 (% style="color:red" %)Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.
1003 )))
1004
1005 (((
1006 **AT COMMAND FOR ALARM MODE:**
1007 )))
1008
1009 (% _mstvisible="1" class="box infomessage" %)
1010 (((
1011 (((
1012 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled)
1013 )))
1014
1015 (((
1016 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1017 )))
1018
1019 (((
1020 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1021 )))
1022
1023 (((
1024 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
1025 )))
1026
1027 (((
1028 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1029 )))
1030 )))
1031
1032 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1033
1034 Total bytes: 8 bytes
1035
1036 **Example:**AA0100010001003C
1037
1038 WMOD=01
1039
1040 CITEMP=0001
1041
1042 TEMPlow=0001
1043
1044 TEMPhigh=003C
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 == 2.9 installation ==
1063
1064 (% _mstvisible="1" %)
1065 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
1066
1067
1068
1069 = 3. Sensors and Accessories =
1070
1071 == 3.1 E2 Extension Cable ==
1072
1073 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1074
1075 **1m long breakout cable for LHT65N. Features:**
1076
1077 * (((
1078 Use for AT Command， works for both LHT52/LHT65N
1079 )))
1080 * (((
1081 Update firmware for LHT65N, works for both LHT52/LHT65N
1082 )))
1083 * (((
1084 Supports ADC mode to monitor external ADC
1085 )))
1086 * (((
1087 Supports Interrupt mode
1088 )))
1089 * (((
1090 Exposed All pins from the LHT65N Type-C connector.
1091 )))
1092
1093 [[image:image-20220619092421-3.png||height="371" width="529"]]
1094
1095
1096
1097
1098 == 3.2 E3 Temperature Probe ==
1099
1100
1101 [[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"]]
1102
1103
1104 Temperature sensor with 2 meters cable long
1105
1106 * Resolution: 0.0625 °C
1107 * ±0.5°C accuracy from -10°C to +85°C
1108 * ±2°C accuracy from -55°C to +125°C
1109 * Operating Range: -40 ~~ 125 °C
1110 * Working voltage 2.35v ~~ 5v
1111
1112
1113
1114 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1115
1116 (((
1117 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1118 )))
1119
1120 * (((
1121 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1122 )))
1123
1124 * (((
1125 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1126 )))
1127
1128 (((
1129 There are two kinds of commands to configure LHT65N, they are:
1130 )))
1131
1132 * (((
1133 (% style="color:#4f81bd" %)**General Commands**.
1134 )))
1135
1136 (((
1137 These commands are to configure:
1138 )))
1139
1140 1. (((
1141 General system settings like: uplink interval.
1142 )))
1143 1. (((
1144 LoRaWAN protocol & radio-related commands.
1145 )))
1146
1147 (((
1148 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]]
1149 )))
1150
1151 * (((
1152 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1153 )))
1154
1155 (((
1156 These commands are only valid for LHT65N, as below:
1157 )))
1158
1159
1160 == 4.1 Set Transmit Interval Time ==
1161
1162 Feature: Change LoRaWAN End Node Transmit Interval.
1163
1164 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1165
1166 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
1167
1168
1169 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1170
1171 Format: Command Code (0x01) followed by 3 bytes time value.
1172
1173 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1174
1175 * **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1176
1177 * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1178
1179
1180
1181 == 4.2 Set External Sensor Mode ==
1182
1183 Feature: Change External Sensor Mode.
1184
1185 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1186
1187 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1188
1189
1190 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1191
1192 Total bytes: 2 ~~ 5 bytes
1193
1194 **Example:**
1195
1196 * 0xA201: Set external sensor type to E1
1197
1198 * 0xA209: Same as AT+EXT=9
1199
1200 * 0xA20702003c: Same as AT+SETCNT=60
1201
1202
1203
1204 == 4.3 Enable/Disable uplink Temperature probe ID ==
1205
1206 (((
1207 Feature: If PID is enabled, device will send the temperature probe ID on:
1208 )))
1209
1210 * (((
1211 First Packet after OTAA Join
1212 )))
1213 * (((
1214 Every 24 hours since the first packet.
1215 )))
1216
1217 (((
1218 PID is default set to disable (0)
1219 )))
1220
1221 (% style="color:#4f81bd" %)**AT Command:**
1222
1223 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1224
1225
1226 (% style="color:#4f81bd" %)**Downlink Command:**
1227
1228 * **0xA800**  **~-~->** AT+PID=0
1229 * **0xA801**     **~-~->** AT+PID=1
1230
1231
1232
1233 == 4.4 Set Password ==
1234
1235 Feature: Set device password, max 9 digits
1236
1237 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1238
1239 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1240
1241
1242 (% style="color:#4f81bd" %)**Downlink Command:**
1243
1244 No downlink command for this feature.
1245
1246
1247
1248 == 4.5 Quit AT Command ==
1249
1250 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1251
1252 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1253
1254 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1255
1256
1257 (% style="color:#4f81bd" %)**Downlink Command:**
1258
1259 No downlink command for this feature.
1260
1261
1262
1263 == 4.6 Set to sleep mode ==
1264
1265 Feature: Set device to sleep mode
1266
1267 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1268 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1269
1270 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1271
1272 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1273
1274
1275 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1276
1277 * There is no downlink command to set to Sleep mode.
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 == 4.13 Auto Send None-ACK messages ==
1380
1381 (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
1382 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.
1383
1384 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1385
1386 (% _msthash="315396" _msttexthash="734682" _mstvisible="1" %)
1387 The default factory setting is 0
1388
1389 (% _mstvisible="1" border="1" style="background-color:#ffffcc; color:green; width:450px" %)
1390 (% _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**
1391 (% _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
1392
1393 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1394
1395 * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1396
1397
1398
1399 = 5. Battery & How to replace =
1400
1401 == 5.1 Battery Type ==
1402
1403 (((
1404 (((
1405 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.
1406 )))
1407 )))
1408
1409 (((
1410
1411 )))
1412
1413 (((
1414 (((
1415 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1416 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1417 )))
1418 )))
1419
1420 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1421
1422
1423 == 5.2 Replace Battery ==
1424
1425 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.
1426
1427 [[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"]]
1428
1429
1430 == 5.3 Battery Life Analyze ==
1431
1432 (((
1433 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:
1434 [[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]]
1435 )))
1436
1437 (((
1438
1439 )))
1440
1441 (((
1442 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]]
1443 )))
1444
1445
1446
1447 = 6. FAQ =
1448
1449 == 6.1 How to use AT Command? ==
1450
1451 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.
1452
1453 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1454
1455
1456 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1457
1458 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1459 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1460 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1461 * (% style="background-color:yellow" %)**USB to TTL 3.3V <~-~-> D-**
1462
1463 (((
1464 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.
1465 )))
1466
1467
1468 Input password and ATZ to activate LHT65N,As shown below:
1469
1470 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1471
1472
1473 (% _msthash="506066" _msttexthash="544869" %)
1474 AT Command List is as below:
1475
1476 (% _msthash="506067" _msttexthash="361920" %)
1477 AT+<CMD>? :  Help on <CMD>
1478
1479 (% _msthash="506068" _msttexthash="243061" %)
1480 AT+<CMD> :  Run <CMD>
1481
1482 (% _msthash="506069" _msttexthash="704197" %)
1483 AT+<CMD>=<value> :  Set the value
1484
1485 (% _msthash="506070" _msttexthash="455676" %)
1486 AT+<CMD>=? :  Get the value
1487
1488 (% _msthash="506071" _msttexthash="670553" %)
1489 AT+DEBUG:  Set more info output
1490
1491 (% _msthash="506072" _msttexthash="485888" %)
1492 ATZ:  Trig a reset of the MCU
1493
1494 (% _msthash="506073" _msttexthash="2068872" %)
1495 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1496
1497 (% _msthash="506074" _msttexthash="689169" %)
1498 AT+DEUI:  Get or Set the Device EUI
1499
1500 (% _msthash="506075" _msttexthash="960414" %)
1501 AT+DADDR:  Get or Set the Device Address
1502
1503 (% _msthash="506076" _msttexthash="1079897" %)
1504 AT+APPKEY:  Get or Set the Application Key
1505
1506 (% _msthash="506077" _msttexthash="1326143" %)
1507 AT+NWKSKEY:  Get or Set the Network Session Key
1508
1509 (% _msthash="506078" _msttexthash="1573000" %)
1510 AT+APPSKEY:  Get or Set the Application Session Key
1511
1512 (% _msthash="506079" _msttexthash="1041729" %)
1513 AT+APPEUI:  Get or Set the Application EUI
1514
1515 (% _msthash="506080" _msttexthash="2104206" %)
1516 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1517
1518 (% _msthash="506081" _msttexthash="3369288" %)
1519 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1520
1521 (% _msthash="506082" _msttexthash="1894529" %)
1522 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1523
1524 (% _msthash="506083" _msttexthash="3864172" %)
1525 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1526
1527 (% _msthash="506084" _msttexthash="1712204" %)
1528 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1529
1530 (% _msthash="506085" _msttexthash="1281202" %)
1531 AT+RX2FQ:  Get or Set the Rx2 window frequency
1532
1533 (% _msthash="506086" _msttexthash="2796781" %)
1534 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1535
1536 (% _msthash="506087" _msttexthash="3285165" %)
1537 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1538
1539 (% _msthash="506088" _msttexthash="3286179" %)
1540 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1541
1542 (% _msthash="506089" _msttexthash="4703803" %)
1543 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1544
1545 (% _msthash="506090" _msttexthash="4704999" %)
1546 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1547
1548 (% _msthash="506091" _msttexthash="1528683" %)
1549 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1550
1551 (% _msthash="506092" _msttexthash="757185" %)
1552 AT+NWKID:  Get or Set the Network ID
1553
1554 (% _msthash="506093" _msttexthash="1156597" %)
1555 AT+FCU:  Get or Set the Frame Counter Uplink
1556
1557 (% _msthash="506094" _msttexthash="1273987" %)
1558 AT+FCD:  Get or Set the Frame Counter Downlink
1559
1560 (% _msthash="506095" _msttexthash="859222" %)
1561 AT+CLASS:  Get or Set the Device Class
1562
1563 (% _msthash="506096" _msttexthash="384852" %)
1564 AT+JOIN:  Join network
1565
1566 (% _msthash="506097" _msttexthash="548626" %)
1567 AT+NJS:  Get the join status
1568
1569 (% _msthash="506098" _msttexthash="2546206" %)
1570 AT+SENDB:  Send hexadecimal data along with the application port
1571
1572 (% _msthash="506099" _msttexthash="1932307" %)
1573 AT+SEND:  Send text data along with the application port
1574
1575 (% _msthash="506100" _msttexthash="3560557" %)
1576 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1577
1578 (% _msthash="506101" _msttexthash="1429701" %)
1579 AT+RECV:  Print last received data in raw format
1580
1581 (% _msthash="506102" _msttexthash="1735981" %)
1582 AT+VER:  Get current image version and Frequency Band
1583
1584 (% _msthash="506103" _msttexthash="1189474" %)
1585 AT+CFM:  Get or Set the confirmation mode (0-1)
1586
1587 (% _msthash="506104" _msttexthash="1718210" %)
1588 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1589
1590 (% _msthash="506105" _msttexthash="1339403" %)
1591 AT+SNR:  Get the SNR of the last received packet
1592
1593 (% _msthash="506106" _msttexthash="1452009" %)
1594 AT+RSSI:  Get the RSSI of the last received packet
1595
1596 (% _msthash="506107" _msttexthash="2768142" %)
1597 AT+TDC:  Get or set the application data transmission interval in ms
1598
1599 (% _msthash="506108" _msttexthash="1083914" %)
1600 AT+PORT:  Get or set the application port
1601
1602 (% _msthash="506109" _msttexthash="622440" %)
1603 AT+DISAT:  Disable AT commands
1604
1605 (% _msthash="506110" _msttexthash="868361" %)
1606 AT+PWORD: Set password, max 9 digits
1607
1608 (% _msthash="506111" _msttexthash="2210299" %)
1609 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1610
1611 (% _msthash="506112" _msttexthash="2113462" %)
1612 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1613
1614 (% _msthash="506113" _msttexthash="2087423" %)
1615 AT+PDTA:  Print the sector data from start page to stop page
1616
1617 (% _msthash="506114" _msttexthash="1063127" %)
1618 AT+PLDTA:  Print the last few sets of data
1619
1620 (% _msthash="506115" _msttexthash="1999426" %)
1621 AT+CLRDTA:  Clear the storage, record position back to 1st
1622
1623 (% _msthash="506116" _msttexthash="442130" %)
1624 AT+SLEEP:  Set sleep mode
1625
1626 (% _msthash="506117" _msttexthash="1080222" %)
1627 AT+EXT:  Get or Set external sensor model
1628
1629 (% _msthash="506118" _msttexthash="1309490" %)
1630 AT+BAT:  Get the current battery voltage in mV
1631
1632 (% _msthash="506119" _msttexthash="813891" %)
1633 AT+CFG:  Print all configurations
1634
1635 (% _msthash="506120" _msttexthash="551707" %)
1636 AT+WMOD:  Get or Set Work Mode
1637
1638 (% _msthash="506121" _msttexthash="2631499" %)
1639 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1640
1641 (% _msthash="506122" _msttexthash="3907150" %)
1642 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1643
1644 (% _msthash="506123" _msttexthash="854620" %)
1645 AT+SETCNT:  Set the count at present
1646
1647 (% _msthash="506124" _msttexthash="2554877" %)
1648 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1649
1650 (% _msthash="506125" _msttexthash="771849" %)
1651 AT+RPL:  Get or set response level
1652
1653 (% _msthash="506126" _msttexthash="1484314" %)
1654 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1655
1656 (% _msthash="506127" _msttexthash="741728" %)
1657 AT+LEAPSEC:  Get or Set Leap Second
1658
1659 (% _msthash="506128" _msttexthash="1694017" %)
1660 AT+SYNCMOD:  Get or Set time synchronization method
1661
1662 (% _msthash="506129" _msttexthash="2235948" %)
1663 AT+SYNCTDC:  Get or set time synchronization interval in day
1664
1665 (% _msthash="506130" _msttexthash="425542" %)
1666 AT+PID:  Get or set the PID
1667
1668
1669 == 6.2 Where to use AT commands and Downlink commands ==
1670
1671 (% _msthash="506131" _msttexthash="14585714" %)
1672 AT commands：
1673
1674 [[image:image-20220620153708-1.png||height="603" width="723"]]
1675
1676 (% _msthash="506132" _msttexthash="337922" %)
1677 Downlink commands:
1678
1679
1680 (% _msthash="506133" _msttexthash="33046" %)
1681 **TTN:**
1682
1683 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1684
1685
1686 (% _msthash="506134" _msttexthash="11113791" %)
1687 **Helium：**
1688
1689 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1690
1691
1692 (% _msthash="506135" _msttexthash="4159844" %)
1693 **Chirpstack:The downlink window will not be displayed until the network is accessed**
1694
1695 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1696
1697 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1698
1699
1700 (% _msthash="506136" _msttexthash="39286" %)
1701 **Aws:**
1702
1703 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1704
1705
1706
1707 == 6.3 How to change the uplink interval？ ==
1708
1709 [[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"]]
1710
1711
1712
1713 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1714
1715 [[image:image-20220615153355-1.png]]
1716
1717 [[image:1655802313617-381.png]]
1718
1719
1720 (((
1721 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.
1722 )))
1723
1724
1725 Input password and ATZ to activate LHT65N,As shown below:
1726
1727 [[image:image-20220615154519-3.png||height="672" width="807"]]
1728
1729
1730
1731 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1732
1733
1734 [[image:image-20220615153355-1.png]]
1735
1736
1737 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1738
1739 [[image:image-20220615170542-5.png]]
1740
1741
1742 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1743
1744 (% _msthash="506146" _msttexthash="52173160" %)
1745 First connect the four lines；(% style="display:none" %)
1746
1747 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1748
1749
1750 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1751
1752 [[image:image-20220621170938-2.png]]
1753
1754
1755 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1756
1757 [[image:image-20220615171334-6.png]]
1758
1759
1760 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1761
1762
1763 When this interface appears, it indicates that the download has been completed.
1764
1765 [[image:image-20220620160723-8.png]]
1766
1767
1768 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1769
1770
1771 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1772
1773 [[image:image-20220623110706-1.png]]
1774
1775
1776 [[image:image-20220623112117-4.png||height="459" width="343"]]
1777
1778 (((
1779 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.
1780 )))
1781
1782
1783 Input password and ATZ to activate LHT65N,As shown below:
1784
1785 [[image:image-20220615154519-3.png||height="672" width="807"]]
1786
1787
1788 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1789
1790 [[image:image-20220623110706-1.png]]
1791
1792 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1793
1794 [[image:image-20220615170542-5.png]]
1795
1796
1797 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1798
1799 (% _msthash="506146" _msttexthash="52173160" %)
1800 First connect the four lines；
1801
1802 (% _msthash="506146" _msttexthash="52173160" %)
1803 [[image:image-20220623113959-5.png||height="528" width="397"]]
1804
1805 (% _msthash="506146" _msttexthash="52173160" %)
1806 Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
1807
1808 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1809
1810 [[image:image-20220615171334-6.png]]
1811
1812
1813 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1814
1815
1816 When this interface appears, it indicates that the download has been completed.
1817
1818 [[image:image-20220620160723-8.png]]
1819
1820
1821 Finally,restart reset device again
1822
1823
1824 = 7. Order Info =
1825
1826
1827 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
1828
1829 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1830
1831 (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1832
1833 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1834
1835 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1836
1837 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1838
1839 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1840
1841 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1842
1843 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1844
1845 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1846
1847 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1848
1849 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1850
1851
1852
1853 = 8. Packing Info =
1854
1855
1856 **Package Includes**:
1857
1858 * LHT65N Temperature & Humidity Sensor x 1
1859 * Optional external sensor
1860
1861 **Dimension and weight**:
1862
1863 * Device Size:  10 x 10 x 3.5 cm
1864 * Device Weight: 120.5g
1865
1866
1867
1868 = 9. Reference material =
1869
1870 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1871
1872
1873
1874 = 10. FCC Warning =
1875
1876 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1877
1878 (1) This device may not cause harmful interference；
1879
1880 (2) this device must accept any interference received, including interference that may cause undesired operation.