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Version 189.10 by Xiaoling on 2022/08/08 16:46
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9 (% _msthash="315238" _msttexthash="18964465" _mstvisible="3" %)**Table of Contents：**
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11 {{toc/}}
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15
16
17 = 1. Introduction =
18
19 == 1.1 What is LHT65N Temperature & Humidity Sensor ==
20
21
22 (((
23 The Dragino LHT65N Temperature & Humidity sensor is a Long Range LoRaWAN Sensor. It includes a (% style="color:#4f81bd" %)**built-in Temperature & Humidity sensor**(%%) and has an external sensor connector to connect to an external (% style="color:#4f81bd" %)**Temperature Sensor.**
24 )))
25
26 (((
27 The LHT65N allows users to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, building automation, and so on.
28 )))
29
30 (((
31 LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
32 )))
33
34 (((
35 LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
36 )))
37
38 (((
39 LHT65N supports (% style="color:#4f81bd" %)**Datalog Feature**(%%). It will record the data when there is no network coverage and users can retrieve the sensor value later to ensure no miss for every sensor reading.
40 )))
41
42 (((
43 *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
44 )))
45
46
47 == 1.2 Features ==
48
49
50 * Wall mountable
51 * LoRaWAN v1.0.3 Class A protocol
52 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
53 * AT Commands to change parameters
54 * Remote configure parameters via LoRaWAN Downlink
55 * Firmware upgradeable via program port
56 * Built-in 2400mAh battery for up to 10 years of use.
57 * Built-in Temperature & Humidity sensor
58 * Optional External Sensors
59 * Tri-color LED to indicate working status
60 * Datalog feature
61
62 == 1.3 Specification ==
63
64
65 **Built-in Temperature Sensor:**
66
67 * Resolution: 0.01 °C
68 * Accuracy Tolerance : Typ ±0.3 °C
69 * Long Term Drift: < 0.02 °C/yr
70 * Operating Range: -40 ~~ 85 °C
71
72 **Built-in Humidity Sensor:**
73
74 * Resolution: 0.04 %RH
75 * Accuracy Tolerance : Typ ±3 %RH
76 * Long Term Drift: < 0.02 °C/yr
77 * Operating Range: 0 ~~ 96 %RH
78
79 **External Temperature Sensor:**
80
81 * Resolution: 0.0625 °C
82 * ±0.5°C accuracy from -10°C to +85°C
83 * ±2°C accuracy from -55°C to +125°C
84 * Operating Range: -55 °C ~~ 125 °C
85
86 = 2. Connect LHT65N to IoT Server =
87
88 == 2.1 How does LHT65N work? ==
89
90
91 (((
92 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.
93 )))
94
95 (((
96 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.
97 )))
98
99
100
101 == 2.2 How to Activate LHT65N? ==
102
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
129 (% _msthash="315240" _msttexthash="9205482" _mstvisible="1" class="wikigeneratedid" %)
130 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.
131
132 (% _mstvisible="1" class="wikigeneratedid" %)
133 [[image:image-20220522232442-1.png||_mstalt="427830" _mstvisible="3" height="387" width="648"]]
134
135
136 (((
137 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:
138 )))
139
140
141
142 === 2.3.1 Step 1: Create Device n TTN ===
143
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
170 (% style="color:red" %)**Note: LHT65N use same payload as LHT65.**
171
172
173 [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
174
175
176 Input APP EUI,  APP KEY and DEV EUI:
177
178
179 [[image:image-20220522233118-7.png||_mstalt="430430" _mstvisible="3"]]
180
181
182
183
184 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
185
186
187 (((
188 Use ACT button to activate LHT65N and it will auto-join to the TTN V3 network. After join success, it will start to upload sensor data to TTN V3 and user can see in the panel.
189 )))
190
191 [[image:image-20220522233300-8.png||_mstalt="428389" _mstvisible="3" height="219" width="722"]]
192
193
194
195
196 == 2.4 Uplink Payload ==
197
198
199 (((
200 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.
201 )))
202
203 (((
204 After each uplink, the (% _mstvisible="3" style="color:blue" %)**BLUE LED**(%%) will blink once.
205 )))
206
207 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:426px" %)
208 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 97px;" %)(% _mstvisible="5" %)
209 (((
210 (% _mstvisible="6" %)
211 (% _msthash="1817478" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
212 )))|=(% _mstvisible="4" style="width: 39px;" %)(% _mstvisible="5" %)
213 (((
214 (% _mstvisible="6" %)
215 (% _msthash="1817479" _msttexthash="4550" _mstvisible="8" %)**2**
216 )))|=(% _mstvisible="4" style="width: 100px;" %)(% _mstvisible="5" %)
217 (((
218 (% _mstvisible="6" %)
219 (% _msthash="1817480" _msttexthash="4550" _mstvisible="8" %)**2**
220 )))|=(% _mstvisible="4" style="width: 77px;" %)(% _mstvisible="5" %)
221 (((
222 (% _mstvisible="6" %)
223 (% _msthash="1817481" _msttexthash="4550" _mstvisible="8" %)**2**
224 )))|=(% _mstvisible="4" style="width: 47px;" %)(% _mstvisible="5" %)
225 (((
226 (% _mstvisible="6" %)
227 (% _msthash="1817482" _msttexthash="4459" _mstvisible="8" %)**1**
228 )))|=(% _mstvisible="4" style="width: 51px;" %)(% _mstvisible="5" %)
229 (((
230 (% _mstvisible="6" %)
231 (% _msthash="1817483" _msttexthash="4732" _mstvisible="8" %)**4**
232 )))
233 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:97px" %)(% _mstvisible="5" %)
234 (((
235 (% _mstvisible="6" %)
236 (% _msthash="1817484" _msttexthash="60203" _mstvisible="8" %)**Value**
237 )))|(% _mstvisible="4" style="width:39px" %)(% _mstvisible="5" %)
238 (((
239 (% _mstvisible="6" %)
240 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo" _msthash="1817485" _msttexthash="22594" _mstvisible="7"]]
241 )))|(% _mstvisible="4" style="width:100px" %)(% _mstvisible="5" %)
242 (((
243 (% _mstvisible="6" %)
244 (((
245 (% _mstvisible="7" %)
246 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224742" _msttexthash="405769" _mstvisible="8"]]
247 )))
248 )))|(% _mstvisible="4" style="width:77px" %)(% _mstvisible="5" %)
249 (((
250 (% _mstvisible="6" %)
251 (((
252 (% _mstvisible="7" %)
253 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2224743" _msttexthash="105872" _mstvisible="8"]]
254 )))
255
256 (% _mstvisible="6" %)
257 (((
258 (% _mstvisible="7" %)
259 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224744" _msttexthash="117429" _mstvisible="8"]]
260 )))
261 )))|(% _mstvisible="4" style="width:47px" %)(% _mstvisible="5" %)
262 (((
263 (% _mstvisible="6" %)
264 [[Ext>>||anchor="H2.4.5Ext23" _msthash="1817486" _msttexthash="32331" _mstvisible="7"]] #
265 )))|(% _mstvisible="4" style="width:51px" %)(% _mstvisible="5" %)
266 (((
267 (% _mstvisible="6" %)
268 [[Ext value>>||anchor="H2.4.6Extvalue" _msthash="1817487" _msttexthash="116545" _mstvisible="7"]]
269 )))
270
271 * The First 6 bytes: has fix meanings for every LHT65N.
272 * The 7th byte (EXT #): defines the external sensor model.
273 * 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.)
274
275 === 2.4.1 Decoder in TTN V3 ===
276
277
278 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.
279
280 Below is the position to put the decoder and LHT65N decoder can be download from here:
281
282
283 [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0 >>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0||_msthash="315253" _msttexthash="3509064" _mstvisible="2"]]
284
285
286 [[image:image-20220522234118-10.png||_mstalt="451464" _mstvisible="3" height="353" width="729"]]
287
288
289
290
291 === 2.4.2 BAT-Battery Info ===
292
293
294 These two bytes of BAT include the battery state and the actually voltage
295
296 [[image:image-20220523152839-18.png||_mstalt="457613" _mstvisible="3"]]
297
298
299 [[image:image-20220522235639-1.png||_mstalt="431392" _mstvisible="3" height="139" width="727"]]
300
301
302 Check the battery voltage for LHT65N.
303
304 * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
305 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
306
307 === 2.4.3 Built-in Temperature ===
308
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 === 2.4.4 Built-in Humidity ===
319
320
321 [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
322
323 * Humidity:    0x025C/10=60.4%
324
325 === 2.4.5 Ext # ===
326
327
328 Bytes for External Sensor:
329
330 [[image:image-20220523152822-17.png||_mstalt="454545" _mstvisible="3"]]
331
332
333
334 === 2.4.6 Ext value ===
335
336 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
337
338
339 [[image:image-20220522235639-5.png||_mstalt="432848" _mstvisible="3"]]
340
341
342 * DS18B20 temp=0x0ADD/100=27.81℃
343
344 The last 2 bytes of data are meaningless
345
346 [[image:image-20220522235639-6.png||_mstalt="433212" _mstvisible="3"]]
347
348
349 * External temperature= (0xF54F-65536)/100=-27.37℃
350
351 The last 2 bytes of data are meaningless
352
353 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
354
355
356
357 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
358
359
360 (((
361 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:
362 )))
363
364 (((
365
366 )))
367
368 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
369 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 96px;" %)(% _mstvisible="5" %)
370 (((
371 (% _mstvisible="6" %)
372 (% _msthash="1817488" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
373 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
374 (((
375 (% _mstvisible="6" %)
376 (% _msthash="1817489" _msttexthash="4550" _mstvisible="8" %)**2**
377 )))|=(% _mstvisible="4" style="width: 99px;" %)(% _mstvisible="5" %)
378 (((
379 (% _mstvisible="6" %)
380 (% _msthash="1817490" _msttexthash="4550" _mstvisible="8" %)**2**
381 )))|=(% _mstvisible="4" style="width: 132px;" %)(% _mstvisible="5" %)
382 (((
383 (% _mstvisible="6" %)
384 (% _msthash="1817491" _msttexthash="4550" _mstvisible="8" %)**2**
385 )))|=(% _mstvisible="4" style="width: 54px;" %)(% _mstvisible="5" %)
386 (((
387 (% _mstvisible="6" %)
388 (% _msthash="1817492" _msttexthash="4459" _mstvisible="8" %)**1**
389 )))|=(% _mstvisible="4" style="width: 64px;" %)(% _mstvisible="5" %)
390 (((
391 (% _mstvisible="6" %)
392 (% _msthash="1817493" _msttexthash="4732" _mstvisible="8" %)**4**
393 )))
394 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:96px" %)(% _mstvisible="5" %)
395 (((
396 (% _mstvisible="6" %)
397 (% _msthash="1817494" _msttexthash="60203" _mstvisible="8" %)**Value**
398 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
399 (((
400 (% _mstvisible="6" %)
401 [[External temperature>>||anchor="H4.2SetExternalSensorMode" _msthash="1817495" _msttexthash="426517" _mstvisible="7"]]
402 )))|(% _mstvisible="4" style="width:99px" %)(% _mstvisible="5" %)
403 (((
404 (% _mstvisible="6" %)
405 (((
406 (% _mstvisible="7" %)
407 [[Built-In>>||anchor="H2.4.3Built-inTemperature" _msthash="2224745" _msttexthash="100464" _mstvisible="8"]]
408 )))
409
410 (% _mstvisible="6" %)
411 (((
412 (% _mstvisible="7" %)
413 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224746" _msttexthash="184041" _mstvisible="8"]]
414 )))
415 )))|(% _mstvisible="4" style="width:132px" %)(% _mstvisible="5" %)
416 (((
417 (% _mstvisible="6" %)
418 (((
419 (% _msthash="2224747" _msttexthash="136331" _mstvisible="7" %)
420 BAT Status &
421 )))
422
423 (% _mstvisible="6" %)
424 (((
425 (% _mstvisible="7" %)
426 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224748" _msttexthash="311181" _mstvisible="8"]]
427 )))
428 )))|(% _mstvisible="4" style="width:54px" %)(% _mstvisible="5" %)
429 (((
430 (% _msthash="1817496" _msttexthash="147225" _mstvisible="6" %)
431 Status & Ext
432 )))|(% _mstvisible="4" style="width:64px" %)(% _mstvisible="5" %)
433 (((
434 (% _mstvisible="6" %)
435 (((
436 (% _mstvisible="7" %)
437 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2224749" _msttexthash="227175" _mstvisible="8"]]
438 )))
439 )))
440
441 (% _mstvisible="1" %)
442 * (% _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**
443
444 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:469px" %)
445 (% _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]
446 (% _mstvisible="3" %)|(% _msthash="1230921" _msttexthash="60203" _mstvisible="4" style="width:65px" %)Value|(% _mstvisible="4" style="width:267px" %)(% _mstvisible="5" %)
447 (((
448 (% _msthash="1817497" _msttexthash="128427" _mstvisible="6" %)
449 BAT Status
450
451 (% _msthash="1817498" _msttexthash="472784" _mstvisible="6" %)
452 00(b): Ultra Low ( BAT <= 2.50v)
453
454 (% _msthash="1817499" _msttexthash="483678" _mstvisible="6" %)
455 01(b): Low  (2.50v <=BAT <= 2.55v)
456
457 (% _msthash="1817500" _msttexthash="440791" _mstvisible="6" %)
458 10(b): OK   (2.55v <= BAT <=2.65v)
459
460 (% _msthash="1817501" _msttexthash="334191" _mstvisible="6" %)
461 11(b): Good   (BAT >= 2.65v)
462 )))|(% _mstvisible="4" style="width:134px" %)(% _mstvisible="5" %)
463 (((
464 (% _mstvisible="6" %)
465 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="1817502" _msttexthash="311181" _mstvisible="7"]]
466
467 (% _mstvisible="6" %)
468
469 )))
470
471 * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
472
473 (% border="1" cellspacing="8" style="background-color:#ffffcc; color:green; width:520px" %)
474 |(% style="width:60px" %)**Bits**|(% style="width:90px" %)**7**|(% style="width:100px" %)**6**|(% style="width:90px" %)**5**|(% style="width:100px" %)**4**|(% style="width:60px" %)**[3:0]**
475 |(% style="width:96px" %)**Status&Ext**|(% style="width:124px" %)None-ACK Flag|(% style="width:146px" %)Poll Message FLAG|(% style="width:109px" %)Sync time OK|(% style="width:143px" %)Unix Time Request|(% style="width:106px" %)Ext: 0b(1001)
476
477 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
478 * (% style="color:blue" %)**Sync time OK**: (%%) 1: Set time ok，0: N/A. After time SYNC request is sent, LHT65N will set this bit to 0 until got the time stamp from the application server.
479 * (% style="color:blue" %)**Unix Time Request**:(%%)  1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65N will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)
480
481 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
482
483
484 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
485
486 be used to power the external ADC sensor; user can control the power on time for this
487
488 sensor by setting:
489
490 AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)Time to power this sensor, from 0 ~~ 65535ms
491
492 For example:
493
494 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
495
496
497 Or use **downlink command A2** to set the same.
498
499 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
500
501 When the measured output voltage of the sensor is not within the range of 0.1V and 1.1V, the output voltage terminal of the sensor shall be divided The example in the following figure is to reduce the output voltage of the sensor by three times If it is necessary to reduce more times, calculate according to the formula in the figure and connect the corresponding resistance in series.
502
503 [[image:image-20220628150112-1.png||height="241" width="285"]]
504
505
506 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
507
508 [[image:image-20220628150714-4.png]]
509
510
511 When the voltage collected by ADC_IN1 is less than the minimum range, the minimum range will be used as the output; Similarly, when the collected voltage is greater than the maximum range, the maximum range will be used as the output.
512
513 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
514
515 [[image:image-20220628151005-5.png]]
516
517
518 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
519
520 [[image:image-20220628151056-6.png]]
521
522
523 3) Within range
524
525 [[image:image-20220628151143-7.png]]
526
527
528
529 == 2.5 Show data on Datacake ==
530
531
532 (((
533 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:
534 )))
535
536 (((
537
538 )))
539
540 (((
541 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
542 )))
543
544 (((
545 (% 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.
546 )))
547
548 (((
549
550 )))
551
552 (((
553 Add Datacake:
554 )))
555
556
557 [[image:image-20220523000825-7.png||_mstalt="429884" _mstvisible="3" height="262" width="583"]]
558
559
560
561 Select default key as Access Key:
562
563
564 [[image:image-20220523000825-8.png||_mstalt="430248" _mstvisible="3" height="453" width="406"]]
565
566
567 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/||_mstvisible="2"]]) , add LHT65 device.
568
569
570 [[image:image-20220523000825-9.png||_mstalt="430612" _mstvisible="3" height="366" width="392"]]
571
572
573 [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
574
575
576
577 == 2.6 Datalog Feature ==
578
579
580 (((
581 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.
582 )))
583
584
585
586 === 2.6.1 Ways to get datalog via LoRaWAN ===
587
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 (((
623 There are two ways to set device's time:
624 )))
625
626 (((
627 **~1. Through LoRaWAN MAC Command (Default settings)**
628 )))
629
630 (((
631 User need to set SYNCMOD=1 to enable sync time via MAC command.
632 )))
633
634 (((
635 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).
636 )))
637
638 (((
639 (% 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.**
640 )))
641
642 (((
643
644 )))
645
646 (((
647 **2. Manually Set Time**
648 )))
649
650 (((
651 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
652 )))
653
654
655
656 === 2.6.4 Poll sensor value ===
657
658
659 User can poll sensor value based on timestamps from the server. Below is the downlink command.
660
661 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
662
663
664 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.
665
666 For example, downlink command **31 5FC5F350 5FC6 0160 05**
667
668 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
669
670 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
671
672
673
674 === 2.6.5 Datalog Uplink payload ===
675
676
677 (% _msthash="315267" _msttexthash="2245087" _mstvisible="1" %)
678 The Datalog poll reply uplink will use below payload format.
679
680 (% _mstvisible="1" %)
681 (((
682 (% _mstvisible="2" %)
683
684
685 (% _mstvisible="2" %)
686 (% _msthash="506080" _msttexthash="451581" _mstvisible="4" %)**Retrieval data payload**
687 )))
688
689 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
690 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 93px;" %)(% _mstvisible="5" %)
691 (((
692 (% _mstvisible="6" %)
693 (((
694 (% _mstvisible="7" %)
695 (% _msthash="2224750" _msttexthash="161122" _mstvisible="9" %)**Size(bytes)**
696 )))
697 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
698 (((
699 (% _mstvisible="6" %)
700 (((
701 (% _mstvisible="7" %)
702 (% _msthash="2224751" _msttexthash="4550" _mstvisible="9" %)**2**
703 )))
704 )))|=(% _mstvisible="4" style="width: 102px;" %)(% _mstvisible="5" %)
705 (((
706 (% _mstvisible="6" %)
707 (((
708 (% _mstvisible="7" %)
709 (% _msthash="2224752" _msttexthash="4550" _mstvisible="9" %)**2**
710 )))
711 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
712 (((
713 (% _mstvisible="6" %)
714 (((
715 (% _mstvisible="7" %)
716 (% _msthash="2224753" _msttexthash="4550" _mstvisible="9" %)**2**
717 )))
718 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
719 (((
720 (% _mstvisible="6" %)
721 (((
722 (% _mstvisible="7" %)
723 (% _msthash="2224754" _msttexthash="4459" _mstvisible="9" %)**1**
724 )))
725 )))|=(% _mstvisible="4" style="width: 48px;" %)(% _mstvisible="5" %)
726 (((
727 (% _mstvisible="6" %)
728 (((
729 (% _mstvisible="7" %)
730 (% _msthash="2224755" _msttexthash="4732" _mstvisible="9" %)**4**
731 )))
732 )))
733 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:93px" %)(% _mstvisible="5" %)
734 (((
735 (% _mstvisible="6" %)
736 (((
737 (% _mstvisible="7" %)
738 (% _msthash="2224756" _msttexthash="60203" _mstvisible="9" %)**Value**
739 )))
740 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
741 (((
742 (% _mstvisible="6" %)
743 (((
744 (% _mstvisible="7" %)
745 [[External sensor data>>||anchor="H2.4.6Extvalue" _msthash="2224757" _msttexthash="386672" _mstvisible="8"]]
746 )))
747 )))|(% _mstvisible="4" style="width:102px" %)(% _mstvisible="5" %)
748 (((
749 (% _mstvisible="6" %)
750 (((
751 (% _mstvisible="7" %)
752 (((
753 (% _mstvisible="8" %)
754 [[Built In>>||anchor="H2.4.3Built-inTemperature" _msthash="2671864" _msttexthash="91065" _mstvisible="9"]]
755 )))
756 )))
757
758 (% _mstvisible="6" %)
759 (((
760 (% _mstvisible="7" %)
761 (((
762 (% _mstvisible="8" %)
763 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2671865" _msttexthash="184041" _mstvisible="9"]]
764 )))
765 )))
766 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
767 (((
768 (% _mstvisible="6" %)
769 (((
770 (% _mstvisible="7" %)
771 (((
772 (% _mstvisible="8" %)
773 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2671866" _msttexthash="105872" _mstvisible="9"]]
774 )))
775 )))
776
777 (% _mstvisible="6" %)
778 (((
779 (% _mstvisible="7" %)
780 (((
781 (% _mstvisible="8" %)
782 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2671867" _msttexthash="117429" _mstvisible="9"]]
783 )))
784 )))
785 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
786 (((
787 (% _mstvisible="6" %)
788 (((
789 (% _msthash="2224758" _msttexthash="390390" _mstvisible="7" %)
790 Poll message flag & Ext
791 )))
792 )))|(% _mstvisible="4" style="width:48px" %)(% _mstvisible="5" %)
793 (((
794 (% _mstvisible="6" %)
795 (((
796 (% _mstvisible="7" %)
797 (((
798 (% _mstvisible="8" %)
799 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2671868" _msttexthash="227175" _mstvisible="9"]]
800 )))
801 )))
802
803 (% _mstvisible="6" %)
804 (((
805 (% _mstvisible="7" %)
806 (((
807 (% _mstvisible="8" %)
808
809 )))
810 )))
811 )))
812
813 (% _mstvisible="1" %)
814 (% _msthash="315268" _msttexthash="390390" _mstvisible="3" %)**Poll message flag & Ext**
815
816 (% _mstvisible="1" %)
817 [[image:image-20220523152208-14.png||_mstalt="452920" _mstvisible="3"]]
818
819 (% _mstvisible="1" %)
820 (((
821 (% _mstvisible="2" %)
822 (((
823 (% _msthash="736723" _msttexthash="2005003" _mstvisible="3" %)
824 (((
825 Poll Message Flag: 1: This message is a poll message reply.
826 )))
827 )))
828 )))
829
830 (% _mstvisible="1" %)
831 * (% _mstvisible="3" %)
832 (((
833 (% _mstvisible="4" %)
834 (((
835 (% _msthash="1197157" _msttexthash="561548" _mstvisible="5" %)
836 (((
837 Poll Message Flag is set to 1.
838 )))
839 )))
840 )))
841 * (% _mstvisible="3" %)
842 (((
843 (% _mstvisible="4" %)
844 (((
845 (% _msthash="1197158" _msttexthash="9284964" _mstvisible="5" %)
846 (((
847 Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
848 )))
849 )))
850 )))
851
852 (% _mstvisible="1" %)
853 (((
854 (% _mstvisible="2" %)
855 (((
856 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
857 (((
858
859 )))
860
861 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
862 (((
863 For example, in US915 band, the max payload for different DR is:
864 )))
865 )))
866 )))
867
868 (% _mstvisible="1" %)
869 (((
870 (% _mstvisible="2" %)
871 (((
872 (% _msthash="736725" _msttexthash="1065532" _mstvisible="3" %)
873 (((
874 a) DR0: max is 11 bytes so one entry of data
875 )))
876 )))
877 )))
878
879 (% _mstvisible="1" %)
880 (((
881 (% _mstvisible="2" %)
882 (((
883 (% _msthash="736726" _msttexthash="3265665" _mstvisible="3" %)
884 (((
885 b) DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
886 )))
887 )))
888 )))
889
890 (% _mstvisible="1" %)
891 (((
892 (% _mstvisible="2" %)
893 (((
894 (% _msthash="736727" _msttexthash="1454115" _mstvisible="3" style="text-align: left;" %)
895 (((
896 c) DR2: total payload includes 11 entries of data
897 )))
898 )))
899 )))
900
901 (% _mstvisible="1" %)
902 (((
903 (% _mstvisible="2" %)
904 (((
905 (% _msthash="736728" _msttexthash="1483924" _mstvisible="3" style="text-align: left;" %)
906 (((
907 d) DR3: total payload includes 22 entries of data.
908 )))
909 )))
910 )))
911
912 (% _mstvisible="1" %)
913 (((
914 (% _mstvisible="2" %)
915 (((
916 (% _msthash="736729" _msttexthash="5848349" _mstvisible="3" style="text-align: left;" %)
917 (((
918 If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0   
919 )))
920 )))
921 )))
922
923
924 (% _mstvisible="1" style="text-align: left;" %)
925 (% _msthash="315269" _msttexthash="104767" _mstvisible="3" %)**Example:**
926
927 (% _msthash="315270" _msttexthash="913822" _mstvisible="1" style="text-align: left;" %)
928 If LHT65N has below data inside Flash:
929
930 (% _mstvisible="1" %)
931 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
932
933 (% _mstvisible="1" %)
934 (((
935 (% _msthash="506081" _msttexthash="1663961" _mstvisible="2" style="text-align: left;" %)
936 If user sends below downlink command: (% _mstvisible="3" style="background-color:yellow" %)3160065F9760066DA705
937 )))
938
939 (% _mstvisible="1" %)
940 (((
941 (% _msthash="506082" _msttexthash="1092494" _mstvisible="2" style="text-align: left;" %)
942 Where : Start time: 60065F97 = time 21/1/19 04:27:03
943 )))
944
945 (% _mstvisible="1" %)
946 (((
947 (% _msthash="506083" _msttexthash="737269" _mstvisible="2" style="text-align: left;" %)
948 Stop time 60066DA7= time 21/1/19 05:27:(% _msthash="903005" _msttexthash="9672" _mstvisible="2" %)03
949 )))
950
951 (% _mstvisible="1" %)
952 (((
953 (% _mstvisible="2" %)
954
955 )))
956
957 (% _mstvisible="1" %)
958 (((
959 (% _msthash="506084" _msttexthash="751218" _mstvisible="2" style="text-align: left;" %)
960 LHT65N will uplink this payload.
961 )))
962
963 (% _mstvisible="1" %)
964 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
965
966 (% _msthash="315271" _msttexthash="12012546" _mstvisible="1" style="text-align: left;" %)
967 (((
968 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
969 )))
970
971 (% _msthash="315237" _msttexthash="1385839" %)
972 (((
973 Where the first 11 bytes is for the first entry:
974 )))
975
976 (% _msthash="315238" _msttexthash="274846" %)
977 (((
978 7FFF089801464160065F97
979 )))
980
981 (% _msthash="315239" _msttexthash="617435" %)
982 (((
983 Ext sensor data=0x7FFF/100=327.67
984 )))
985
986 (% _msthash="315240" _msttexthash="270543" %)
987 (((
988 Temp=0x0898/100=22.00
989 )))
990
991 (% _msthash="315241" _msttexthash="211783" %)
992 (((
993 Hum=0x0146/10=32.6
994 )))
995
996 (% _msthash="315242" _msttexthash="1569776" %)
997 (((
998 poll message flag & Ext=0x41,means reply data,Ext=1
999 )))
1000
1001 (% _msthash="315243" _msttexthash="1120509" %)
1002 (((
1003 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
1004 )))
1005
1006
1007
1008 == 2.7 Alarm Mode ==
1009
1010
1011 (((
1012 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.
1013 )))
1014
1015 (((
1016 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
1017
1018
1019 )))
1020
1021 (((
1022 **AT COMMAND FOR ALARM MODE:**
1023 )))
1024
1025 (% _mstvisible="1" class="box infomessage" %)
1026 (((
1027 (((
1028 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled)
1029 )))
1030
1031 (((
1032 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1033 )))
1034
1035 (((
1036 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1037 )))
1038
1039 (((
1040 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
1041 )))
1042
1043 (((
1044 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1045 )))
1046 )))
1047
1048 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1049
1050 Total bytes: 8 bytes
1051
1052 **Example:**AA0100010001003C
1053
1054 WMOD=01
1055
1056 CITEMP=0001
1057
1058 TEMPlow=0001
1059
1060 TEMPhigh=003C
1061
1062
1063
1064 == 2.8 LED Indicator ==
1065
1066
1067 The LHT65 has a triple color LED which for easy showing different stage .
1068
1069 While user press ACT button, the LED will work as per LED status with ACT button.
1070
1071 In a normal working state:
1072
1073 * For each uplink, the BLUE LED or RED LED will blink once.
1074 BLUE LED when external sensor is connected.
1075 * RED LED when external sensor is not connected
1076 * For each success downlink, the PURPLE LED will blink once
1077
1078 == 2.9 installation ==
1079
1080
1081 (% _mstvisible="1" %)
1082 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
1083
1084
1085
1086 = 3. Sensors and Accessories =
1087
1088 == 3.1 E2 Extension Cable ==
1089
1090
1091 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1092
1093
1094 **1m long breakout cable for LHT65N. Features:**
1095
1096 * (((
1097 Use for AT Command， works for both LHT52/LHT65N
1098 )))
1099 * (((
1100 Update firmware for LHT65N, works for both LHT52/LHT65N
1101 )))
1102 * (((
1103 Supports ADC mode to monitor external ADC
1104 )))
1105 * (((
1106 Supports Interrupt mode
1107 )))
1108 * (((
1109 Exposed All pins from the LHT65N Type-C connector.
1110
1111
1112
1113 )))
1114
1115 [[image:image-20220619092421-3.png||height="371" width="529"]]
1116
1117
1118
1119
1120 == 3.2 E3 Temperature Probe ==
1121
1122
1123 [[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"]]
1124
1125
1126 Temperature sensor with 2 meters cable long
1127
1128 * Resolution: 0.0625 °C
1129 * ±0.5°C accuracy from -10°C to +85°C
1130 * ±2°C accuracy from -55°C to +125°C
1131 * Operating Range: -40 ~~ 125 °C
1132 * Working voltage 2.35v ~~ 5v
1133
1134 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1135
1136
1137 (((
1138 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1139 )))
1140
1141 * (((
1142 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1143 )))
1144
1145 * (((
1146 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1147 )))
1148
1149 (((
1150 There are two kinds of commands to configure LHT65N, they are:
1151 )))
1152
1153 * (((
1154 (% style="color:#4f81bd" %)**General Commands**.
1155 )))
1156
1157 (((
1158 These commands are to configure:
1159 )))
1160
1161 1. (((
1162 General system settings like: uplink interval.
1163 )))
1164 1. (((
1165 LoRaWAN protocol & radio-related commands.
1166 )))
1167
1168 (((
1169 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]]
1170 )))
1171
1172 * (((
1173 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1174 )))
1175
1176 (((
1177 These commands are only valid for LHT65N, as below:
1178 )))
1179
1180
1181
1182 == 4.1 Set Transmit Interval Time ==
1183
1184
1185 Feature: Change LoRaWAN End Node Transmit Interval.
1186
1187
1188 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1189
1190 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
1191
1192
1193 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1194
1195 Format: Command Code (0x01) followed by 3 bytes time value.
1196
1197 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1198
1199 * **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1200
1201 * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1202
1203 == 4.2 Set External Sensor Mode ==
1204
1205
1206 Feature: Change External Sensor Mode.
1207
1208
1209 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1210
1211 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1212
1213
1214 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1215
1216 Total bytes: 2 ~~ 5 bytes
1217
1218 **Example:**
1219
1220 * 0xA201: Set external sensor type to E1
1221
1222 * 0xA209: Same as AT+EXT=9
1223
1224 * 0xA20702003c: Same as AT+SETCNT=60
1225
1226 == 4.3 Enable/Disable uplink Temperature probe ID ==
1227
1228
1229 (((
1230 Feature: If PID is enabled, device will send the temperature probe ID on:
1231 )))
1232
1233 * (((
1234 First Packet after OTAA Join
1235 )))
1236 * (((
1237 Every 24 hours since the first packet.
1238 )))
1239
1240 (((
1241 PID is default set to disable (0)
1242
1243
1244 )))
1245
1246 (% style="color:#4f81bd" %)**AT Command:**
1247
1248 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1249
1250
1251 (% style="color:#4f81bd" %)**Downlink Command:**
1252
1253 * **0xA800**  **~-~->** AT+PID=0
1254 * **0xA801**     **~-~->** AT+PID=1
1255
1256 == 4.4 Set Password ==
1257
1258
1259 Feature: Set device password, max 9 digits
1260
1261
1262 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1263
1264 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1265
1266
1267 (% style="color:#4f81bd" %)**Downlink Command:**
1268
1269 No downlink command for this feature.
1270
1271
1272
1273 == 4.5 Quit AT Command ==
1274
1275
1276 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1277
1278
1279 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1280
1281 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1282
1283
1284 (% style="color:#4f81bd" %)**Downlink Command:**
1285
1286 No downlink command for this feature.
1287
1288
1289
1290 == 4.6 Set to sleep mode ==
1291
1292
1293 Feature: Set device to sleep mode
1294
1295 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1296 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1297
1298 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1299
1300 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1301
1302
1303 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1304
1305 * There is no downlink command to set to Sleep mode.
1306
1307 == 4.7 Set system time ==
1308
1309
1310 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1311
1312
1313 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1314
1315 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1316
1317
1318 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1319
1320 0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1321
1322
1323
1324 == 4.8 Set Time Sync Mode ==
1325
1326
1327 (((
1328 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1329 )))
1330
1331 (((
1332 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.
1333
1334
1335 )))
1336
1337 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1338
1339 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1340
1341
1342 (% style="color:#4f81bd" %)**Downlink Command:**
1343
1344 0x28 01 ~/~/ Same As AT+SYNCMOD=1
1345 0x28 00 ~/~/ Same As AT+SYNCMOD=0
1346
1347
1348
1349 == 4.9 Set Time Sync Interval ==
1350
1351
1352 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1353
1354
1355 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1356
1357 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1358
1359
1360 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1361
1362 **0x29 0A** ~/~/ Same as AT+SYNCTDC=0x0A
1363
1364
1365
1366 == 4.10 Print data entries base on page. ==
1367
1368
1369 Feature: Print the sector data from start page to stop page (max is 416 pages).
1370
1371
1372 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1373
1374 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1375
1376
1377 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1378
1379 No downlink commands for feature
1380
1381
1382
1383 == 4.11 Print last few data entries. ==
1384
1385
1386 Feature: Print the last few data entries
1387
1388
1389 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1390
1391 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1392
1393
1394 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1395
1396 No downlink commands for feature
1397
1398
1399
1400 == 4.12 Clear Flash Record ==
1401
1402
1403 Feature: Clear flash storage for data log feature.
1404
1405
1406 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1407
1408 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1409
1410
1411 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1412
1413 * Example: 0xA301 ~/~/Same as AT+CLRDTA
1414
1415 == 4.13 Auto Send None-ACK messages ==
1416
1417
1418 (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
1419 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.
1420
1421
1422 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1423
1424 (% _msthash="315396" _msttexthash="734682" _mstvisible="1" %)
1425 The default factory setting is 0
1426
1427 (% _mstvisible="1" border="1" style="background-color:#ffffcc; color:green; width:450px" %)
1428 (% _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**
1429 (% _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
1430
1431 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1432
1433 * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1434
1435 = 5. Battery & How to replace =
1436
1437 == 5.1 Battery Type ==
1438
1439
1440 (((
1441 (((
1442 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.
1443 )))
1444 )))
1445
1446 (((
1447
1448 )))
1449
1450 (((
1451 (((
1452 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1453 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1454 )))
1455 )))
1456
1457 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1458
1459
1460
1461 == 5.2 Replace Battery ==
1462
1463
1464 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.
1465
1466 [[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"]]
1467
1468
1469 == 5.3 Battery Life Analyze ==
1470
1471
1472 (((
1473 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:
1474 [[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]]
1475 )))
1476
1477 (((
1478
1479 )))
1480
1481 (((
1482 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]]
1483 )))
1484
1485
1486
1487 = 6. FAQ =
1488
1489
1490 == 6.1 How to use AT Command? ==
1491
1492
1493 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.
1494
1495 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1496
1497
1498 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1499
1500 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1501 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1502 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1503 * (% style="background-color:yellow" %)**USB to TTL 3.3V <~-~-> D-**
1504
1505 (((
1506 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.
1507 )))
1508
1509
1510 Input password and ATZ to activate LHT65N,As shown below:
1511
1512 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1513
1514
1515 (% _msthash="506066" _msttexthash="544869" %)
1516 AT Command List is as below:
1517
1518 (% _msthash="506067" _msttexthash="361920" %)
1519 AT+<CMD>? :  Help on <CMD>
1520
1521 (% _msthash="506068" _msttexthash="243061" %)
1522 AT+<CMD> :  Run <CMD>
1523
1524 (% _msthash="506069" _msttexthash="704197" %)
1525 AT+<CMD>=<value> :  Set the value
1526
1527 (% _msthash="506070" _msttexthash="455676" %)
1528 AT+<CMD>=? :  Get the value
1529
1530 (% _msthash="506071" _msttexthash="670553" %)
1531 AT+DEBUG:  Set more info output
1532
1533 (% _msthash="506072" _msttexthash="485888" %)
1534 ATZ:  Trig a reset of the MCU
1535
1536 (% _msthash="506073" _msttexthash="2068872" %)
1537 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1538
1539 (% _msthash="506074" _msttexthash="689169" %)
1540 AT+DEUI:  Get or Set the Device EUI
1541
1542 (% _msthash="506075" _msttexthash="960414" %)
1543 AT+DADDR:  Get or Set the Device Address
1544
1545 (% _msthash="506076" _msttexthash="1079897" %)
1546 AT+APPKEY:  Get or Set the Application Key
1547
1548 (% _msthash="506077" _msttexthash="1326143" %)
1549 AT+NWKSKEY:  Get or Set the Network Session Key
1550
1551 (% _msthash="506078" _msttexthash="1573000" %)
1552 AT+APPSKEY:  Get or Set the Application Session Key
1553
1554 (% _msthash="506079" _msttexthash="1041729" %)
1555 AT+APPEUI:  Get or Set the Application EUI
1556
1557 (% _msthash="506080" _msttexthash="2104206" %)
1558 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1559
1560 (% _msthash="506081" _msttexthash="3369288" %)
1561 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1562
1563 (% _msthash="506082" _msttexthash="1894529" %)
1564 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1565
1566 (% _msthash="506083" _msttexthash="3864172" %)
1567 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1568
1569 (% _msthash="506084" _msttexthash="1712204" %)
1570 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1571
1572 (% _msthash="506085" _msttexthash="1281202" %)
1573 AT+RX2FQ:  Get or Set the Rx2 window frequency
1574
1575 (% _msthash="506086" _msttexthash="2796781" %)
1576 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1577
1578 (% _msthash="506087" _msttexthash="3285165" %)
1579 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1580
1581 (% _msthash="506088" _msttexthash="3286179" %)
1582 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1583
1584 (% _msthash="506089" _msttexthash="4703803" %)
1585 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1586
1587 (% _msthash="506090" _msttexthash="4704999" %)
1588 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1589
1590 (% _msthash="506091" _msttexthash="1528683" %)
1591 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1592
1593 (% _msthash="506092" _msttexthash="757185" %)
1594 AT+NWKID:  Get or Set the Network ID
1595
1596 (% _msthash="506093" _msttexthash="1156597" %)
1597 AT+FCU:  Get or Set the Frame Counter Uplink
1598
1599 (% _msthash="506094" _msttexthash="1273987" %)
1600 AT+FCD:  Get or Set the Frame Counter Downlink
1601
1602 (% _msthash="506095" _msttexthash="859222" %)
1603 AT+CLASS:  Get or Set the Device Class
1604
1605 (% _msthash="506096" _msttexthash="384852" %)
1606 AT+JOIN:  Join network
1607
1608 (% _msthash="506097" _msttexthash="548626" %)
1609 AT+NJS:  Get the join status
1610
1611 (% _msthash="506098" _msttexthash="2546206" %)
1612 AT+SENDB:  Send hexadecimal data along with the application port
1613
1614 (% _msthash="506099" _msttexthash="1932307" %)
1615 AT+SEND:  Send text data along with the application port
1616
1617 (% _msthash="506100" _msttexthash="3560557" %)
1618 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1619
1620 (% _msthash="506101" _msttexthash="1429701" %)
1621 AT+RECV:  Print last received data in raw format
1622
1623 (% _msthash="506102" _msttexthash="1735981" %)
1624 AT+VER:  Get current image version and Frequency Band
1625
1626 (% _msthash="506103" _msttexthash="1189474" %)
1627 AT+CFM:  Get or Set the confirmation mode (0-1)
1628
1629 (% _msthash="506104" _msttexthash="1718210" %)
1630 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1631
1632 (% _msthash="506105" _msttexthash="1339403" %)
1633 AT+SNR:  Get the SNR of the last received packet
1634
1635 (% _msthash="506106" _msttexthash="1452009" %)
1636 AT+RSSI:  Get the RSSI of the last received packet
1637
1638 (% _msthash="506107" _msttexthash="2768142" %)
1639 AT+TDC:  Get or set the application data transmission interval in ms
1640
1641 (% _msthash="506108" _msttexthash="1083914" %)
1642 AT+PORT:  Get or set the application port
1643
1644 (% _msthash="506109" _msttexthash="622440" %)
1645 AT+DISAT:  Disable AT commands
1646
1647 (% _msthash="506110" _msttexthash="868361" %)
1648 AT+PWORD: Set password, max 9 digits
1649
1650 (% _msthash="506111" _msttexthash="2210299" %)
1651 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1652
1653 (% _msthash="506112" _msttexthash="2113462" %)
1654 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1655
1656 (% _msthash="506113" _msttexthash="2087423" %)
1657 AT+PDTA:  Print the sector data from start page to stop page
1658
1659 (% _msthash="506114" _msttexthash="1063127" %)
1660 AT+PLDTA:  Print the last few sets of data
1661
1662 (% _msthash="506115" _msttexthash="1999426" %)
1663 AT+CLRDTA:  Clear the storage, record position back to 1st
1664
1665 (% _msthash="506116" _msttexthash="442130" %)
1666 AT+SLEEP:  Set sleep mode
1667
1668 (% _msthash="506117" _msttexthash="1080222" %)
1669 AT+EXT:  Get or Set external sensor model
1670
1671 (% _msthash="506118" _msttexthash="1309490" %)
1672 AT+BAT:  Get the current battery voltage in mV
1673
1674 (% _msthash="506119" _msttexthash="813891" %)
1675 AT+CFG:  Print all configurations
1676
1677 (% _msthash="506120" _msttexthash="551707" %)
1678 AT+WMOD:  Get or Set Work Mode
1679
1680 (% _msthash="506121" _msttexthash="2631499" %)
1681 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1682
1683 (% _msthash="506122" _msttexthash="3907150" %)
1684 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1685
1686 (% _msthash="506123" _msttexthash="854620" %)
1687 AT+SETCNT:  Set the count at present
1688
1689 (% _msthash="506124" _msttexthash="2554877" %)
1690 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1691
1692 (% _msthash="506125" _msttexthash="771849" %)
1693 AT+RPL:  Get or set response level
1694
1695 (% _msthash="506126" _msttexthash="1484314" %)
1696 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1697
1698 (% _msthash="506127" _msttexthash="741728" %)
1699 AT+LEAPSEC:  Get or Set Leap Second
1700
1701 (% _msthash="506128" _msttexthash="1694017" %)
1702 AT+SYNCMOD:  Get or Set time synchronization method
1703
1704 (% _msthash="506129" _msttexthash="2235948" %)
1705 AT+SYNCTDC:  Get or set time synchronization interval in day
1706
1707 (% _msthash="506130" _msttexthash="425542" %)
1708 AT+PID:  Get or set the PID
1709
1710
1711
1712 == 6.2 Where to use AT commands and Downlink commands ==
1713
1714
1715 **AT commands：**
1716
1717 [[image:image-20220620153708-1.png||height="603" width="723"]]
1718
1719
1720 **Downlink commands:**
1721
1722
1723
1724 (% style="color:blue" %)**TTN:**
1725
1726 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1727
1728
1729
1730 (% style="color:blue" %)**Helium：**
1731
1732 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1733
1734
1735
1736 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1737
1738
1739 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1740
1741
1742 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1743
1744
1745
1746 (% style="color:blue" %)**Aws:**
1747
1748 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1749
1750
1751
1752 == 6.3 How to change the uplink interval？ ==
1753
1754
1755 [[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"]]
1756
1757
1758
1759 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1760
1761
1762 [[image:image-20220615153355-1.png]]
1763
1764 [[image:1655802313617-381.png]]
1765
1766
1767 (((
1768 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.
1769 )))
1770
1771
1772 Input password and ATZ to activate LHT65N,As shown below:
1773
1774 [[image:image-20220615154519-3.png||height="672" width="807"]]
1775
1776
1777
1778 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1779
1780
1781 [[image:image-20220615153355-1.png]]
1782
1783
1784 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1785
1786 [[image:image-20220615170542-5.png]]
1787
1788
1789 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1790
1791 (% _msthash="506146" _msttexthash="52173160" %)
1792 First connect the four lines；(% style="display:none" %)
1793
1794 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1795
1796
1797 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1798
1799 [[image:image-20220621170938-2.png]]
1800
1801
1802 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1803
1804 [[image:image-20220615171334-6.png]]
1805
1806
1807 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1808
1809
1810 When this interface appears, it indicates that the download has been completed.
1811
1812 [[image:image-20220620160723-8.png]]
1813
1814
1815 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1816
1817
1818
1819 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1820
1821
1822 [[image:image-20220623110706-1.png]]
1823
1824
1825 [[image:image-20220623112117-4.png||height="459" width="343"]]
1826
1827
1828 (((
1829 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.
1830 )))
1831
1832
1833 Input password and ATZ to activate LHT65N,As shown below:
1834
1835 [[image:image-20220615154519-3.png||height="672" width="807"]]
1836
1837
1838
1839 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1840
1841
1842 [[image:image-20220623110706-1.png]]
1843
1844
1845 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1846
1847 [[image:image-20220615170542-5.png]]
1848
1849
1850 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1851
1852 (% _msthash="506146" _msttexthash="52173160" %)
1853 First connect the four lines；
1854
1855 (% _msthash="506146" _msttexthash="52173160" %)
1856 [[image:image-20220623113959-5.png||height="528" width="397"]]
1857
1858 (% _msthash="506146" _msttexthash="52173160" %)
1859 Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
1860
1861
1862 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1863
1864 [[image:image-20220615171334-6.png]]
1865
1866
1867 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1868
1869
1870 When this interface appears, it indicates that the download has been completed.
1871
1872 [[image:image-20220620160723-8.png]]
1873
1874
1875 Finally,restart reset device again
1876
1877
1878
1879 = 7. Order Info =
1880
1881
1882 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
1883
1884 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1885
1886 (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1887
1888 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1889
1890 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1891
1892 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1893
1894 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1895
1896 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1897
1898 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1899
1900 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1901
1902 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1903
1904 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1905
1906
1907
1908
1909 = 8. Packing Info =
1910
1911
1912 **Package Includes**:
1913
1914 * LHT65N Temperature & Humidity Sensor x 1
1915 * Optional external sensor
1916
1917 **Dimension and weight**:
1918
1919 * Device Size:  10 x 10 x 3.5 cm
1920 * Device Weight: 120.5g
1921
1922
1923
1924
1925 = 9. Reference material =
1926
1927
1928 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1929
1930
1931
1932
1933 = 10. FCC Warning =
1934
1935
1936 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1937
1938 (1) This device may not cause harmful interference；
1939
1940 (2) this device must accept any interference received, including interference that may cause undesired operation.