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Version 189.2 by Xiaoling on 2022/07/22 10:33
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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 == 1.3 Specification ==
62
63
64 **Built-in Temperature Sensor:**
65
66 * Resolution: 0.01 °C
67 * Accuracy Tolerance : Typ ±0.3 °C
68 * Long Term Drift: < 0.02 °C/yr
69 * Operating Range: -40 ~~ 85 °C
70
71 **Built-in Humidity Sensor:**
72
73 * Resolution: 0.04 %RH
74 * Accuracy Tolerance : Typ ±3 %RH
75 * Long Term Drift: < 0.02 °C/yr
76 * Operating Range: 0 ~~ 96 %RH
77
78 **External Temperature Sensor:**
79
80 * Resolution: 0.0625 °C
81 * ±0.5°C accuracy from -10°C to +85°C
82 * ±2°C accuracy from -55°C to +125°C
83 * Operating Range: -55 °C ~~ 125 °C
84
85 = 2. Connect LHT65N to IoT Server =
86
87 == 2.1 How does LHT65N work? ==
88
89 (((
90 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.
91 )))
92
93 (((
94 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.
95 )))
96
97
98 == 2.2 How to Activate LHT65N? ==
99
100 (((
101 The LHT65N has two working modes:
102 )))
103
104 * (((
105 (% 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.
106 )))
107 * (((
108 (% 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. 
109 )))
110
111 (((
112 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
113 )))
114
115
116 [[image:image-20220515123819-1.png||_mstalt="430742" _mstvisible="3" height="379" width="317"]]
117
118 [[image:image-20220525110604-2.png||_mstalt="427531" _mstvisible="3"]]
119
120
121
122 == 2.3 Example to join LoRaWAN network ==
123
124 (% _msthash="315240" _msttexthash="9205482" _mstvisible="1" class="wikigeneratedid" %)
125 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.
126
127 (% _mstvisible="1" class="wikigeneratedid" %)
128 [[image:image-20220522232442-1.png||_mstalt="427830" _mstvisible="3" height="387" width="648"]]
129
130
131 (((
132 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:
133 )))
134
135
136
137 === 2.3.1 Step 1: Create Device n TTN ===
138
139 (((
140 Create a device in TTN V3 with the OTAA keys from LHT65N.
141 )))
142
143 (((
144 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
145 )))
146
147 [[image:image-20220617150003-1.jpeg]]
148
149 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
150
151 Add APP EUI in the application.
152
153
154 [[image:image-20220522232916-3.png||_mstalt="430495" _mstvisible="3"]]
155
156
157 [[image:image-20220522232932-4.png||_mstalt="430157" _mstvisible="3"]]
158
159
160 [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
161
162
163 Note: LHT65N use same payload as LHT65.
164
165
166 [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
167
168
169 Input APP EUI,  APP KEY and DEV EUI:
170
171
172 [[image:image-20220522233118-7.png||_mstalt="430430" _mstvisible="3"]]
173
174
175
176
177 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
178
179 (((
180 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.
181 )))
182
183 [[image:image-20220522233300-8.png||_mstalt="428389" _mstvisible="3" height="219" width="722"]]
184
185
186
187
188 == 2.4 Uplink Payload ==
189
190 (((
191 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.
192 )))
193
194 (((
195 After each uplink, the (% _mstvisible="3" style="color:blue" %)**BLUE LED**(%%) will blink once.
196 )))
197
198 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:426px" %)
199 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 97px;" %)(% _mstvisible="5" %)
200 (((
201 (% _mstvisible="6" %)
202 (% _msthash="1817478" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
203 )))|=(% _mstvisible="4" style="width: 39px;" %)(% _mstvisible="5" %)
204 (((
205 (% _mstvisible="6" %)
206 (% _msthash="1817479" _msttexthash="4550" _mstvisible="8" %)**2**
207 )))|=(% _mstvisible="4" style="width: 100px;" %)(% _mstvisible="5" %)
208 (((
209 (% _mstvisible="6" %)
210 (% _msthash="1817480" _msttexthash="4550" _mstvisible="8" %)**2**
211 )))|=(% _mstvisible="4" style="width: 77px;" %)(% _mstvisible="5" %)
212 (((
213 (% _mstvisible="6" %)
214 (% _msthash="1817481" _msttexthash="4550" _mstvisible="8" %)**2**
215 )))|=(% _mstvisible="4" style="width: 47px;" %)(% _mstvisible="5" %)
216 (((
217 (% _mstvisible="6" %)
218 (% _msthash="1817482" _msttexthash="4459" _mstvisible="8" %)**1**
219 )))|=(% _mstvisible="4" style="width: 51px;" %)(% _mstvisible="5" %)
220 (((
221 (% _mstvisible="6" %)
222 (% _msthash="1817483" _msttexthash="4732" _mstvisible="8" %)**4**
223 )))
224 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:97px" %)(% _mstvisible="5" %)
225 (((
226 (% _mstvisible="6" %)
227 (% _msthash="1817484" _msttexthash="60203" _mstvisible="8" %)**Value**
228 )))|(% _mstvisible="4" style="width:39px" %)(% _mstvisible="5" %)
229 (((
230 (% _mstvisible="6" %)
231 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo" _msthash="1817485" _msttexthash="22594" _mstvisible="7"]]
232 )))|(% _mstvisible="4" style="width:100px" %)(% _mstvisible="5" %)
233 (((
234 (% _mstvisible="6" %)
235 (((
236 (% _mstvisible="7" %)
237 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224742" _msttexthash="405769" _mstvisible="8"]]
238 )))
239 )))|(% _mstvisible="4" style="width:77px" %)(% _mstvisible="5" %)
240 (((
241 (% _mstvisible="6" %)
242 (((
243 (% _mstvisible="7" %)
244 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2224743" _msttexthash="105872" _mstvisible="8"]]
245 )))
246
247 (% _mstvisible="6" %)
248 (((
249 (% _mstvisible="7" %)
250 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224744" _msttexthash="117429" _mstvisible="8"]]
251 )))
252 )))|(% _mstvisible="4" style="width:47px" %)(% _mstvisible="5" %)
253 (((
254 (% _mstvisible="6" %)
255 [[Ext>>||anchor="H2.4.5Ext23" _msthash="1817486" _msttexthash="32331" _mstvisible="7"]] #
256 )))|(% _mstvisible="4" style="width:51px" %)(% _mstvisible="5" %)
257 (((
258 (% _mstvisible="6" %)
259 [[Ext value>>||anchor="H2.4.6Extvalue" _msthash="1817487" _msttexthash="116545" _mstvisible="7"]]
260 )))
261
262 * The First 6 bytes: has fix meanings for every LHT65N.
263 * The 7th byte (EXT #): defines the external sensor model.
264 * 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.)
265
266 === 2.4.1 Decoder in TTN V3 ===
267
268 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.
269
270 Below is the position to put the decoder and LHT65N decoder can be download from here:
271
272
273 [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0 >>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0||_msthash="315253" _msttexthash="3509064" _mstvisible="2"]]
274
275
276 [[image:image-20220522234118-10.png||_mstalt="451464" _mstvisible="3" height="353" width="729"]]
277
278
279
280
281 === 2.4.2 BAT-Battery Info ===
282
283 These two bytes of BAT include the battery state and the actually voltage
284
285 [[image:image-20220523152839-18.png||_mstalt="457613" _mstvisible="3"]]
286
287
288 [[image:image-20220522235639-1.png||_mstalt="431392" _mstvisible="3" height="139" width="727"]]
289
290
291 Check the battery voltage for LHT65N.
292
293 * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
294 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
295
296 === 2.4.3 Built-in Temperature ===
297
298 [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
299
300 * Temperature:  0x0ABB/100=27.47℃
301
302 [[image:image-20220522235639-3.png||_mstalt="432120" _mstvisible="3"]]
303
304 * Temperature:  (0xF5C6-65536)/100=-26.18℃
305
306
307
308
309 === 2.4.4 Built-in Humidity ===
310
311 [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
312
313 * Humidity:    0x025C/10=60.4%
314
315
316
317
318 === 2.4.5 Ext # ===
319
320 Bytes for External Sensor:
321
322 [[image:image-20220523152822-17.png||_mstalt="454545" _mstvisible="3"]]
323
324
325
326 === 2.4.6 Ext value ===
327
328 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
329
330
331 [[image:image-20220522235639-5.png||_mstalt="432848" _mstvisible="3"]]
332
333
334 * DS18B20 temp=0x0ADD/100=27.81℃
335
336 The last 2 bytes of data are meaningless
337
338 [[image:image-20220522235639-6.png||_mstalt="433212" _mstvisible="3"]]
339
340
341 * External temperature= (0xF54F-65536)/100=-27.37℃
342
343 The last 2 bytes of data are meaningless
344
345 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
346
347
348
349 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
350
351 (((
352 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:
353 )))
354
355 (((
356
357 )))
358
359 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
360 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 96px;" %)(% _mstvisible="5" %)
361 (((
362 (% _mstvisible="6" %)
363 (% _msthash="1817488" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
364 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
365 (((
366 (% _mstvisible="6" %)
367 (% _msthash="1817489" _msttexthash="4550" _mstvisible="8" %)**2**
368 )))|=(% _mstvisible="4" style="width: 99px;" %)(% _mstvisible="5" %)
369 (((
370 (% _mstvisible="6" %)
371 (% _msthash="1817490" _msttexthash="4550" _mstvisible="8" %)**2**
372 )))|=(% _mstvisible="4" style="width: 132px;" %)(% _mstvisible="5" %)
373 (((
374 (% _mstvisible="6" %)
375 (% _msthash="1817491" _msttexthash="4550" _mstvisible="8" %)**2**
376 )))|=(% _mstvisible="4" style="width: 54px;" %)(% _mstvisible="5" %)
377 (((
378 (% _mstvisible="6" %)
379 (% _msthash="1817492" _msttexthash="4459" _mstvisible="8" %)**1**
380 )))|=(% _mstvisible="4" style="width: 64px;" %)(% _mstvisible="5" %)
381 (((
382 (% _mstvisible="6" %)
383 (% _msthash="1817493" _msttexthash="4732" _mstvisible="8" %)**4**
384 )))
385 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:96px" %)(% _mstvisible="5" %)
386 (((
387 (% _mstvisible="6" %)
388 (% _msthash="1817494" _msttexthash="60203" _mstvisible="8" %)**Value**
389 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
390 (((
391 (% _mstvisible="6" %)
392 [[External temperature>>||anchor="H4.2SetExternalSensorMode" _msthash="1817495" _msttexthash="426517" _mstvisible="7"]]
393 )))|(% _mstvisible="4" style="width:99px" %)(% _mstvisible="5" %)
394 (((
395 (% _mstvisible="6" %)
396 (((
397 (% _mstvisible="7" %)
398 [[Built-In>>||anchor="H2.4.3Built-inTemperature" _msthash="2224745" _msttexthash="100464" _mstvisible="8"]]
399 )))
400
401 (% _mstvisible="6" %)
402 (((
403 (% _mstvisible="7" %)
404 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224746" _msttexthash="184041" _mstvisible="8"]]
405 )))
406 )))|(% _mstvisible="4" style="width:132px" %)(% _mstvisible="5" %)
407 (((
408 (% _mstvisible="6" %)
409 (((
410 (% _msthash="2224747" _msttexthash="136331" _mstvisible="7" %)
411 BAT Status &
412 )))
413
414 (% _mstvisible="6" %)
415 (((
416 (% _mstvisible="7" %)
417 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224748" _msttexthash="311181" _mstvisible="8"]]
418 )))
419 )))|(% _mstvisible="4" style="width:54px" %)(% _mstvisible="5" %)
420 (((
421 (% _msthash="1817496" _msttexthash="147225" _mstvisible="6" %)
422 Status & Ext
423 )))|(% _mstvisible="4" style="width:64px" %)(% _mstvisible="5" %)
424 (((
425 (% _mstvisible="6" %)
426 (((
427 (% _mstvisible="7" %)
428 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2224749" _msttexthash="227175" _mstvisible="8"]]
429 )))
430 )))
431
432 (% _mstvisible="1" %)
433 * (% _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**
434
435 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:469px" %)
436 (% _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]
437 (% _mstvisible="3" %)|(% _msthash="1230921" _msttexthash="60203" _mstvisible="4" style="width:65px" %)Value|(% _mstvisible="4" style="width:267px" %)(% _mstvisible="5" %)
438 (((
439 (% _msthash="1817497" _msttexthash="128427" _mstvisible="6" %)
440 BAT Status
441
442 (% _msthash="1817498" _msttexthash="472784" _mstvisible="6" %)
443 00(b): Ultra Low ( BAT <= 2.50v)
444
445 (% _msthash="1817499" _msttexthash="483678" _mstvisible="6" %)
446 01(b): Low  (2.50v <=BAT <= 2.55v)
447
448 (% _msthash="1817500" _msttexthash="440791" _mstvisible="6" %)
449 10(b): OK   (2.55v <= BAT <=2.65v)
450
451 (% _msthash="1817501" _msttexthash="334191" _mstvisible="6" %)
452 11(b): Good   (BAT >= 2.65v)
453 )))|(% _mstvisible="4" style="width:134px" %)(% _mstvisible="5" %)
454 (((
455 (% _mstvisible="6" %)
456 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="1817502" _msttexthash="311181" _mstvisible="7"]]
457
458 (% _mstvisible="6" %)
459
460 )))
461
462 * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
463
464 (% border="1" cellspacing="8" style="background-color:#ffffcc; color:green; width:520px" %)
465 |(% 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]**
466 |(% 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)
467
468 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
469 * (% 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.
470 * (% 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)
471
472
473
474 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
475
476 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
477
478 be used to power the external ADC sensor; user can control the power on time for this
479
480 sensor by setting:
481
482 AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)Time to power this sensor, from 0 ~~ 65535ms
483
484 For example:
485
486 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
487
488
489 Or use **downlink command A2** to set the same.
490
491 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
492
493 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.
494
495 [[image:image-20220628150112-1.png||height="241" width="285"]]
496
497
498 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
499
500 [[image:image-20220628150714-4.png]]
501
502
503 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.
504
505 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
506
507 [[image:image-20220628151005-5.png]]
508
509
510 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
511
512 [[image:image-20220628151056-6.png]]
513
514
515 3) Within range
516
517 [[image:image-20220628151143-7.png]]
518
519
520
521 == 2.5 Show data on Datacake ==
522
523 (((
524 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:
525 )))
526
527 (((
528
529 )))
530
531 (((
532 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
533 )))
534
535 (((
536 (% 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.
537 )))
538
539 (((
540
541 )))
542
543 (((
544 Add Datacake:
545 )))
546
547
548 [[image:image-20220523000825-7.png||_mstalt="429884" _mstvisible="3" height="262" width="583"]]
549
550
551
552 Select default key as Access Key:
553
554
555 [[image:image-20220523000825-8.png||_mstalt="430248" _mstvisible="3" height="453" width="406"]]
556
557
558 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/||_mstvisible="2"]]) , add LHT65 device.
559
560
561 [[image:image-20220523000825-9.png||_mstalt="430612" _mstvisible="3" height="366" width="392"]]
562
563
564 [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
565
566
567
568 == 2.6 Datalog Feature ==
569
570 (((
571 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.
572 )))
573
574
575
576 === 2.6.1 Ways to get datalog via LoRaWAN ===
577
578 There are two methods:
579
580 1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specifying time range.
581 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.
582
583 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
584
585 [[image:image-20220703111700-2.png||height="381" width="1119"]]
586
587
588 === 2.6.2 Unix TimeStamp ===
589
590
591 LHT65N uses Unix TimeStamp format based on
592
593
594 [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
595
596
597
598 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
599
600 Below is the converter example
601
602 [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
603
604 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
605
606
607
608 === 2.6.3 Set Device Time ===
609
610 (((
611 There are two ways to set device's time:
612 )))
613
614 (((
615 **~1. Through LoRaWAN MAC Command (Default settings)**
616 )))
617
618 (((
619 User need to set SYNCMOD=1 to enable sync time via MAC command.
620 )))
621
622 (((
623 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).
624 )))
625
626 (((
627 (% 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.
628 )))
629
630 (((
631
632 )))
633
634 (((
635 **2. Manually Set Time**
636 )))
637
638 (((
639 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
640 )))
641
642
643
644 === 2.6.4 Poll sensor value ===
645
646 User can poll sensor value based on timestamps from the server. Below is the downlink command.
647
648 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
649
650
651 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.
652
653 For example, downlink command **31 5FC5F350 5FC6 0160 05**
654
655 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
656
657 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
658
659
660
661 === 2.6.5 Datalog Uplink payload ===
662
663 (% _msthash="315267" _msttexthash="2245087" _mstvisible="1" %)
664 The Datalog poll reply uplink will use below payload format.
665
666 (% _mstvisible="1" %)
667 (((
668 (% _mstvisible="2" %)
669 (% _msthash="506080" _msttexthash="451581" _mstvisible="4" %)**Retrieval data payload**
670 )))
671
672 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
673 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 93px;" %)(% _mstvisible="5" %)
674 (((
675 (% _mstvisible="6" %)
676 (((
677 (% _mstvisible="7" %)
678 (% _msthash="2224750" _msttexthash="161122" _mstvisible="9" %)**Size(bytes)**
679 )))
680 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
681 (((
682 (% _mstvisible="6" %)
683 (((
684 (% _mstvisible="7" %)
685 (% _msthash="2224751" _msttexthash="4550" _mstvisible="9" %)**2**
686 )))
687 )))|=(% _mstvisible="4" style="width: 102px;" %)(% _mstvisible="5" %)
688 (((
689 (% _mstvisible="6" %)
690 (((
691 (% _mstvisible="7" %)
692 (% _msthash="2224752" _msttexthash="4550" _mstvisible="9" %)**2**
693 )))
694 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
695 (((
696 (% _mstvisible="6" %)
697 (((
698 (% _mstvisible="7" %)
699 (% _msthash="2224753" _msttexthash="4550" _mstvisible="9" %)**2**
700 )))
701 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
702 (((
703 (% _mstvisible="6" %)
704 (((
705 (% _mstvisible="7" %)
706 (% _msthash="2224754" _msttexthash="4459" _mstvisible="9" %)**1**
707 )))
708 )))|=(% _mstvisible="4" style="width: 48px;" %)(% _mstvisible="5" %)
709 (((
710 (% _mstvisible="6" %)
711 (((
712 (% _mstvisible="7" %)
713 (% _msthash="2224755" _msttexthash="4732" _mstvisible="9" %)**4**
714 )))
715 )))
716 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:93px" %)(% _mstvisible="5" %)
717 (((
718 (% _mstvisible="6" %)
719 (((
720 (% _mstvisible="7" %)
721 (% _msthash="2224756" _msttexthash="60203" _mstvisible="9" %)**Value**
722 )))
723 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
724 (((
725 (% _mstvisible="6" %)
726 (((
727 (% _mstvisible="7" %)
728 [[External sensor data>>||anchor="H2.4.6Extvalue" _msthash="2224757" _msttexthash="386672" _mstvisible="8"]]
729 )))
730 )))|(% _mstvisible="4" style="width:102px" %)(% _mstvisible="5" %)
731 (((
732 (% _mstvisible="6" %)
733 (((
734 (% _mstvisible="7" %)
735 (((
736 (% _mstvisible="8" %)
737 [[Built In>>||anchor="H2.4.3Built-inTemperature" _msthash="2671864" _msttexthash="91065" _mstvisible="9"]]
738 )))
739 )))
740
741 (% _mstvisible="6" %)
742 (((
743 (% _mstvisible="7" %)
744 (((
745 (% _mstvisible="8" %)
746 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2671865" _msttexthash="184041" _mstvisible="9"]]
747 )))
748 )))
749 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
750 (((
751 (% _mstvisible="6" %)
752 (((
753 (% _mstvisible="7" %)
754 (((
755 (% _mstvisible="8" %)
756 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2671866" _msttexthash="105872" _mstvisible="9"]]
757 )))
758 )))
759
760 (% _mstvisible="6" %)
761 (((
762 (% _mstvisible="7" %)
763 (((
764 (% _mstvisible="8" %)
765 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2671867" _msttexthash="117429" _mstvisible="9"]]
766 )))
767 )))
768 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
769 (((
770 (% _mstvisible="6" %)
771 (((
772 (% _msthash="2224758" _msttexthash="390390" _mstvisible="7" %)
773 Poll message flag & Ext
774 )))
775 )))|(% _mstvisible="4" style="width:48px" %)(% _mstvisible="5" %)
776 (((
777 (% _mstvisible="6" %)
778 (((
779 (% _mstvisible="7" %)
780 (((
781 (% _mstvisible="8" %)
782 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2671868" _msttexthash="227175" _mstvisible="9"]]
783 )))
784 )))
785
786 (% _mstvisible="6" %)
787 (((
788 (% _mstvisible="7" %)
789 (((
790 (% _mstvisible="8" %)
791
792 )))
793 )))
794 )))
795
796 (% _mstvisible="1" %)
797 (% _msthash="315268" _msttexthash="390390" _mstvisible="3" %)**Poll message flag & Ext**
798
799 (% _mstvisible="1" %)
800 [[image:image-20220523152208-14.png||_mstalt="452920" _mstvisible="3"]]
801
802 (% _mstvisible="1" %)
803 (((
804 (% _mstvisible="2" %)
805 (((
806 (% _msthash="736723" _msttexthash="2005003" _mstvisible="3" %)
807 (((
808 Poll Message Flag: 1: This message is a poll message reply.
809 )))
810 )))
811 )))
812
813 (% _mstvisible="1" %)
814 * (% _mstvisible="3" %)
815 (((
816 (% _mstvisible="4" %)
817 (((
818 (% _msthash="1197157" _msttexthash="561548" _mstvisible="5" %)
819 (((
820 Poll Message Flag is set to 1.
821 )))
822 )))
823 )))
824 * (% _mstvisible="3" %)
825 (((
826 (% _mstvisible="4" %)
827 (((
828 (% _msthash="1197158" _msttexthash="9284964" _mstvisible="5" %)
829 (((
830 Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
831 )))
832 )))
833 )))
834
835 (% _mstvisible="1" %)
836 (((
837 (% _mstvisible="2" %)
838 (((
839 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
840 (((
841
842 )))
843
844 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
845 (((
846 For example, in US915 band, the max payload for different DR is:
847 )))
848 )))
849 )))
850
851 (% _mstvisible="1" %)
852 (((
853 (% _mstvisible="2" %)
854 (((
855 (% _msthash="736725" _msttexthash="1065532" _mstvisible="3" %)
856 (((
857 a) DR0: max is 11 bytes so one entry of data
858 )))
859 )))
860 )))
861
862 (% _mstvisible="1" %)
863 (((
864 (% _mstvisible="2" %)
865 (((
866 (% _msthash="736726" _msttexthash="3265665" _mstvisible="3" %)
867 (((
868 b) DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
869 )))
870 )))
871 )))
872
873 (% _mstvisible="1" %)
874 (((
875 (% _mstvisible="2" %)
876 (((
877 (% _msthash="736727" _msttexthash="1454115" _mstvisible="3" style="text-align: left;" %)
878 (((
879 c) DR2: total payload includes 11 entries of data
880 )))
881 )))
882 )))
883
884 (% _mstvisible="1" %)
885 (((
886 (% _mstvisible="2" %)
887 (((
888 (% _msthash="736728" _msttexthash="1483924" _mstvisible="3" style="text-align: left;" %)
889 (((
890 d) DR3: total payload includes 22 entries of data.
891 )))
892 )))
893 )))
894
895 (% _mstvisible="1" %)
896 (((
897 (% _mstvisible="2" %)
898 (((
899 (% _msthash="736729" _msttexthash="5848349" _mstvisible="3" style="text-align: left;" %)
900 (((
901 If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0   
902 )))
903 )))
904 )))
905
906
907 (% _mstvisible="1" style="text-align: left;" %)
908 (% _msthash="315269" _msttexthash="104767" _mstvisible="3" %)**Example:**
909
910 (% _msthash="315270" _msttexthash="913822" _mstvisible="1" style="text-align: left;" %)
911 If LHT65N has below data inside Flash:
912
913 (% _mstvisible="1" %)
914 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
915
916 (% _mstvisible="1" %)
917 (((
918 (% _msthash="506081" _msttexthash="1663961" _mstvisible="2" style="text-align: left;" %)
919 If user sends below downlink command: (% _mstvisible="3" style="background-color:yellow" %)3160065F9760066DA705
920 )))
921
922 (% _mstvisible="1" %)
923 (((
924 (% _msthash="506082" _msttexthash="1092494" _mstvisible="2" style="text-align: left;" %)
925 Where : Start time: 60065F97 = time 21/1/19 04:27:03
926 )))
927
928 (% _mstvisible="1" %)
929 (((
930 (% _msthash="506083" _msttexthash="737269" _mstvisible="2" style="text-align: left;" %)
931 Stop time 60066DA7= time 21/1/19 05:27:(% _msthash="903005" _msttexthash="9672" _mstvisible="2" %)03
932 )))
933
934 (% _mstvisible="1" %)
935 (((
936 (% _mstvisible="2" %)
937
938 )))
939
940 (% _mstvisible="1" %)
941 (((
942 (% _msthash="506084" _msttexthash="751218" _mstvisible="2" style="text-align: left;" %)
943 LHT65N will uplink this payload.
944 )))
945
946 (% _mstvisible="1" %)
947 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
948
949 (% _msthash="315271" _msttexthash="12012546" _mstvisible="1" style="text-align: left;" %)
950 (((
951 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
952 )))
953
954 (% _msthash="315237" _msttexthash="1385839" %)
955 (((
956 Where the first 11 bytes is for the first entry:
957 )))
958
959 (% _msthash="315238" _msttexthash="274846" %)
960 (((
961 7FFF089801464160065F97
962 )))
963
964 (% _msthash="315239" _msttexthash="617435" %)
965 (((
966 Ext sensor data=0x7FFF/100=327.67
967 )))
968
969 (% _msthash="315240" _msttexthash="270543" %)
970 (((
971 Temp=0x0898/100=22.00
972 )))
973
974 (% _msthash="315241" _msttexthash="211783" %)
975 (((
976 Hum=0x0146/10=32.6
977 )))
978
979 (% _msthash="315242" _msttexthash="1569776" %)
980 (((
981 poll message flag & Ext=0x41,means reply data,Ext=1
982 )))
983
984 (% _msthash="315243" _msttexthash="1120509" %)
985 (((
986 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
987 )))
988
989
990
991 == 2.7 Alarm Mode ==
992
993 (((
994 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.
995 )))
996
997 (((
998 (% style="color:red" %)Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.
999 )))
1000
1001 (((
1002 **AT COMMAND FOR ALARM MODE:**
1003 )))
1004
1005 (% _mstvisible="1" class="box infomessage" %)
1006 (((
1007 (((
1008 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled)
1009 )))
1010
1011 (((
1012 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1013 )))
1014
1015 (((
1016 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1017 )))
1018
1019 (((
1020 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
1021 )))
1022
1023 (((
1024 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1025 )))
1026 )))
1027
1028 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1029
1030 Total bytes: 8 bytes
1031
1032 **Example:**AA0100010001003C
1033
1034 WMOD=01
1035
1036 CITEMP=0001
1037
1038 TEMPlow=0001
1039
1040 TEMPhigh=003C
1041
1042
1043 == 2.8 LED Indicator ==
1044
1045 The LHT65 has a triple color LED which for easy showing different stage .
1046
1047 While user press ACT button, the LED will work as per LED status with ACT button.
1048
1049 In a normal working state:
1050
1051 * For each uplink, the BLUE LED or RED LED will blink once.
1052 BLUE LED when external sensor is connected.
1053 * RED LED when external sensor is not connected
1054 * For each success downlink, the PURPLE LED will blink once
1055
1056 == 2.9 installation ==
1057
1058 (% _mstvisible="1" %)
1059 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
1060
1061
1062
1063 = 3. Sensors and Accessories =
1064
1065 == 3.1 E2 Extension Cable ==
1066
1067 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1068
1069 **1m long breakout cable for LHT65N. Features:**
1070
1071 * (((
1072 Use for AT Command， works for both LHT52/LHT65N
1073 )))
1074 * (((
1075 Update firmware for LHT65N, works for both LHT52/LHT65N
1076 )))
1077 * (((
1078 Supports ADC mode to monitor external ADC
1079 )))
1080 * (((
1081 Supports Interrupt mode
1082 )))
1083 * (((
1084 Exposed All pins from the LHT65N Type-C connector.
1085 )))
1086
1087 [[image:image-20220619092421-3.png||height="371" width="529"]]
1088
1089
1090
1091
1092 == 3.2 E3 Temperature Probe ==
1093
1094
1095 [[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"]]
1096
1097
1098 Temperature sensor with 2 meters cable long
1099
1100 * Resolution: 0.0625 °C
1101 * ±0.5°C accuracy from -10°C to +85°C
1102 * ±2°C accuracy from -55°C to +125°C
1103 * Operating Range: -40 ~~ 125 °C
1104 * Working voltage 2.35v ~~ 5v
1105
1106 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1107
1108 (((
1109 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1110 )))
1111
1112 * (((
1113 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1114 )))
1115
1116 * (((
1117 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1118 )))
1119
1120 (((
1121 There are two kinds of commands to configure LHT65N, they are:
1122 )))
1123
1124 * (((
1125 (% style="color:#4f81bd" %)**General Commands**.
1126 )))
1127
1128 (((
1129 These commands are to configure:
1130 )))
1131
1132 1. (((
1133 General system settings like: uplink interval.
1134 )))
1135 1. (((
1136 LoRaWAN protocol & radio-related commands.
1137 )))
1138
1139 (((
1140 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]]
1141 )))
1142
1143 * (((
1144 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1145 )))
1146
1147 (((
1148 These commands are only valid for LHT65N, as below:
1149 )))
1150
1151
1152 == 4.1 Set Transmit Interval Time ==
1153
1154 Feature: Change LoRaWAN End Node Transmit Interval.
1155
1156 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1157
1158 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
1159
1160
1161 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1162
1163 Format: Command Code (0x01) followed by 3 bytes time value.
1164
1165 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1166
1167 * **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1168
1169 * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1170
1171 == 4.2 Set External Sensor Mode ==
1172
1173 Feature: Change External Sensor Mode.
1174
1175 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1176
1177 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1178
1179
1180 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1181
1182 Total bytes: 2 ~~ 5 bytes
1183
1184 **Example:**
1185
1186 * 0xA201: Set external sensor type to E1
1187
1188 * 0xA209: Same as AT+EXT=9
1189
1190 * 0xA20702003c: Same as AT+SETCNT=60
1191
1192 == 4.3 Enable/Disable uplink Temperature probe ID ==
1193
1194 (((
1195 Feature: If PID is enabled, device will send the temperature probe ID on:
1196 )))
1197
1198 * (((
1199 First Packet after OTAA Join
1200 )))
1201 * (((
1202 Every 24 hours since the first packet.
1203 )))
1204
1205 (((
1206 PID is default set to disable (0)
1207 )))
1208
1209 (% style="color:#4f81bd" %)**AT Command:**
1210
1211 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1212
1213
1214 (% style="color:#4f81bd" %)**Downlink Command:**
1215
1216 * **0xA800**  **~-~->** AT+PID=0
1217 * **0xA801**     **~-~->** AT+PID=1
1218
1219 == 4.4 Set Password ==
1220
1221 Feature: Set device password, max 9 digits
1222
1223 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1224
1225 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1226
1227
1228 (% style="color:#4f81bd" %)**Downlink Command:**
1229
1230 No downlink command for this feature.
1231
1232
1233
1234 == 4.5 Quit AT Command ==
1235
1236 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1237
1238 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1239
1240 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1241
1242
1243 (% style="color:#4f81bd" %)**Downlink Command:**
1244
1245 No downlink command for this feature.
1246
1247
1248
1249 == 4.6 Set to sleep mode ==
1250
1251 Feature: Set device to sleep mode
1252
1253 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1254 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1255
1256 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1257
1258 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1259
1260
1261 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1262
1263 * There is no downlink command to set to Sleep mode.
1264
1265 == 4.7 Set system time ==
1266
1267 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1268
1269 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1270
1271 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1272
1273
1274 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1275
1276 0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1277
1278
1279
1280 == 4.8 Set Time Sync Mode ==
1281
1282 (((
1283 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1284 )))
1285
1286 (((
1287 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.
1288 )))
1289
1290 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1291
1292 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1293
1294
1295 (% style="color:#4f81bd" %)**Downlink Command:**
1296
1297 0x28 01 ~/~/ Same As AT+SYNCMOD=1
1298 0x28 00 ~/~/ Same As AT+SYNCMOD=0
1299
1300
1301
1302 == 4.9 Set Time Sync Interval ==
1303
1304 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1305
1306 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1307
1308 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1309
1310
1311 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1312
1313 **0x29 0A** ~/~/ Same as AT+SYNCTDC=0x0A
1314
1315
1316
1317 == 4.10 Print data entries base on page. ==
1318
1319 Feature: Print the sector data from start page to stop page (max is 416 pages).
1320
1321 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1322
1323 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1324
1325
1326 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1327
1328 No downlink commands for feature
1329
1330
1331
1332 == 4.11 Print last few data entries. ==
1333
1334 Feature: Print the last few data entries
1335
1336 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1337
1338 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1339
1340
1341 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1342
1343 No downlink commands for feature
1344
1345
1346
1347 == 4.12 Clear Flash Record ==
1348
1349 Feature: Clear flash storage for data log feature.
1350
1351
1352 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1353
1354 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1355
1356
1357 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1358
1359 * Example: 0xA301 ~/~/Same as AT+CLRDTA
1360
1361 == 4.13 Auto Send None-ACK messages ==
1362
1363 (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
1364 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.
1365
1366 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1367
1368 (% _msthash="315396" _msttexthash="734682" _mstvisible="1" %)
1369 The default factory setting is 0
1370
1371 (% _mstvisible="1" border="1" style="background-color:#ffffcc; color:green; width:450px" %)
1372 (% _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**
1373 (% _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
1374
1375 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1376
1377 * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1378
1379 = 5. Battery & How to replace =
1380
1381 == 5.1 Battery Type ==
1382
1383 (((
1384 (((
1385 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.
1386 )))
1387 )))
1388
1389 (((
1390
1391 )))
1392
1393 (((
1394 (((
1395 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1396 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1397 )))
1398 )))
1399
1400 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1401
1402
1403 == 5.2 Replace Battery ==
1404
1405 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.
1406
1407 [[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"]]
1408
1409
1410 == 5.3 Battery Life Analyze ==
1411
1412 (((
1413 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:
1414 [[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]]
1415 )))
1416
1417 (((
1418
1419 )))
1420
1421 (((
1422 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]]
1423 )))
1424
1425
1426
1427 = 6. FAQ =
1428
1429 == 6.1 How to use AT Command? ==
1430
1431 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.
1432
1433 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1434
1435
1436 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1437
1438 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1439 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1440 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1441 * (% style="background-color:yellow" %)**USB to TTL 3.3V <~-~-> D-**
1442
1443 (((
1444 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.
1445 )))
1446
1447
1448 Input password and ATZ to activate LHT65N,As shown below:
1449
1450 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1451
1452
1453 (% _msthash="506066" _msttexthash="544869" %)
1454 AT Command List is as below:
1455
1456 (% _msthash="506067" _msttexthash="361920" %)
1457 AT+<CMD>? :  Help on <CMD>
1458
1459 (% _msthash="506068" _msttexthash="243061" %)
1460 AT+<CMD> :  Run <CMD>
1461
1462 (% _msthash="506069" _msttexthash="704197" %)
1463 AT+<CMD>=<value> :  Set the value
1464
1465 (% _msthash="506070" _msttexthash="455676" %)
1466 AT+<CMD>=? :  Get the value
1467
1468 (% _msthash="506071" _msttexthash="670553" %)
1469 AT+DEBUG:  Set more info output
1470
1471 (% _msthash="506072" _msttexthash="485888" %)
1472 ATZ:  Trig a reset of the MCU
1473
1474 (% _msthash="506073" _msttexthash="2068872" %)
1475 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1476
1477 (% _msthash="506074" _msttexthash="689169" %)
1478 AT+DEUI:  Get or Set the Device EUI
1479
1480 (% _msthash="506075" _msttexthash="960414" %)
1481 AT+DADDR:  Get or Set the Device Address
1482
1483 (% _msthash="506076" _msttexthash="1079897" %)
1484 AT+APPKEY:  Get or Set the Application Key
1485
1486 (% _msthash="506077" _msttexthash="1326143" %)
1487 AT+NWKSKEY:  Get or Set the Network Session Key
1488
1489 (% _msthash="506078" _msttexthash="1573000" %)
1490 AT+APPSKEY:  Get or Set the Application Session Key
1491
1492 (% _msthash="506079" _msttexthash="1041729" %)
1493 AT+APPEUI:  Get or Set the Application EUI
1494
1495 (% _msthash="506080" _msttexthash="2104206" %)
1496 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1497
1498 (% _msthash="506081" _msttexthash="3369288" %)
1499 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1500
1501 (% _msthash="506082" _msttexthash="1894529" %)
1502 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1503
1504 (% _msthash="506083" _msttexthash="3864172" %)
1505 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1506
1507 (% _msthash="506084" _msttexthash="1712204" %)
1508 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1509
1510 (% _msthash="506085" _msttexthash="1281202" %)
1511 AT+RX2FQ:  Get or Set the Rx2 window frequency
1512
1513 (% _msthash="506086" _msttexthash="2796781" %)
1514 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1515
1516 (% _msthash="506087" _msttexthash="3285165" %)
1517 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1518
1519 (% _msthash="506088" _msttexthash="3286179" %)
1520 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1521
1522 (% _msthash="506089" _msttexthash="4703803" %)
1523 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1524
1525 (% _msthash="506090" _msttexthash="4704999" %)
1526 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1527
1528 (% _msthash="506091" _msttexthash="1528683" %)
1529 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1530
1531 (% _msthash="506092" _msttexthash="757185" %)
1532 AT+NWKID:  Get or Set the Network ID
1533
1534 (% _msthash="506093" _msttexthash="1156597" %)
1535 AT+FCU:  Get or Set the Frame Counter Uplink
1536
1537 (% _msthash="506094" _msttexthash="1273987" %)
1538 AT+FCD:  Get or Set the Frame Counter Downlink
1539
1540 (% _msthash="506095" _msttexthash="859222" %)
1541 AT+CLASS:  Get or Set the Device Class
1542
1543 (% _msthash="506096" _msttexthash="384852" %)
1544 AT+JOIN:  Join network
1545
1546 (% _msthash="506097" _msttexthash="548626" %)
1547 AT+NJS:  Get the join status
1548
1549 (% _msthash="506098" _msttexthash="2546206" %)
1550 AT+SENDB:  Send hexadecimal data along with the application port
1551
1552 (% _msthash="506099" _msttexthash="1932307" %)
1553 AT+SEND:  Send text data along with the application port
1554
1555 (% _msthash="506100" _msttexthash="3560557" %)
1556 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1557
1558 (% _msthash="506101" _msttexthash="1429701" %)
1559 AT+RECV:  Print last received data in raw format
1560
1561 (% _msthash="506102" _msttexthash="1735981" %)
1562 AT+VER:  Get current image version and Frequency Band
1563
1564 (% _msthash="506103" _msttexthash="1189474" %)
1565 AT+CFM:  Get or Set the confirmation mode (0-1)
1566
1567 (% _msthash="506104" _msttexthash="1718210" %)
1568 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1569
1570 (% _msthash="506105" _msttexthash="1339403" %)
1571 AT+SNR:  Get the SNR of the last received packet
1572
1573 (% _msthash="506106" _msttexthash="1452009" %)
1574 AT+RSSI:  Get the RSSI of the last received packet
1575
1576 (% _msthash="506107" _msttexthash="2768142" %)
1577 AT+TDC:  Get or set the application data transmission interval in ms
1578
1579 (% _msthash="506108" _msttexthash="1083914" %)
1580 AT+PORT:  Get or set the application port
1581
1582 (% _msthash="506109" _msttexthash="622440" %)
1583 AT+DISAT:  Disable AT commands
1584
1585 (% _msthash="506110" _msttexthash="868361" %)
1586 AT+PWORD: Set password, max 9 digits
1587
1588 (% _msthash="506111" _msttexthash="2210299" %)
1589 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1590
1591 (% _msthash="506112" _msttexthash="2113462" %)
1592 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1593
1594 (% _msthash="506113" _msttexthash="2087423" %)
1595 AT+PDTA:  Print the sector data from start page to stop page
1596
1597 (% _msthash="506114" _msttexthash="1063127" %)
1598 AT+PLDTA:  Print the last few sets of data
1599
1600 (% _msthash="506115" _msttexthash="1999426" %)
1601 AT+CLRDTA:  Clear the storage, record position back to 1st
1602
1603 (% _msthash="506116" _msttexthash="442130" %)
1604 AT+SLEEP:  Set sleep mode
1605
1606 (% _msthash="506117" _msttexthash="1080222" %)
1607 AT+EXT:  Get or Set external sensor model
1608
1609 (% _msthash="506118" _msttexthash="1309490" %)
1610 AT+BAT:  Get the current battery voltage in mV
1611
1612 (% _msthash="506119" _msttexthash="813891" %)
1613 AT+CFG:  Print all configurations
1614
1615 (% _msthash="506120" _msttexthash="551707" %)
1616 AT+WMOD:  Get or Set Work Mode
1617
1618 (% _msthash="506121" _msttexthash="2631499" %)
1619 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1620
1621 (% _msthash="506122" _msttexthash="3907150" %)
1622 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1623
1624 (% _msthash="506123" _msttexthash="854620" %)
1625 AT+SETCNT:  Set the count at present
1626
1627 (% _msthash="506124" _msttexthash="2554877" %)
1628 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1629
1630 (% _msthash="506125" _msttexthash="771849" %)
1631 AT+RPL:  Get or set response level
1632
1633 (% _msthash="506126" _msttexthash="1484314" %)
1634 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1635
1636 (% _msthash="506127" _msttexthash="741728" %)
1637 AT+LEAPSEC:  Get or Set Leap Second
1638
1639 (% _msthash="506128" _msttexthash="1694017" %)
1640 AT+SYNCMOD:  Get or Set time synchronization method
1641
1642 (% _msthash="506129" _msttexthash="2235948" %)
1643 AT+SYNCTDC:  Get or set time synchronization interval in day
1644
1645 (% _msthash="506130" _msttexthash="425542" %)
1646 AT+PID:  Get or set the PID
1647
1648
1649 == 6.2 Where to use AT commands and Downlink commands ==
1650
1651 (% _msthash="506131" _msttexthash="14585714" %)
1652 AT commands：
1653
1654 [[image:image-20220620153708-1.png||height="603" width="723"]]
1655
1656 (% _msthash="506132" _msttexthash="337922" %)
1657 Downlink commands:
1658
1659
1660 (% _msthash="506133" _msttexthash="33046" %)
1661 **TTN:**
1662
1663 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1664
1665
1666 (% _msthash="506134" _msttexthash="11113791" %)
1667 **Helium：**
1668
1669 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1670
1671
1672 (% _msthash="506135" _msttexthash="4159844" %)
1673 **Chirpstack:The downlink window will not be displayed until the network is accessed**
1674
1675 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1676
1677 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1678
1679
1680 (% _msthash="506136" _msttexthash="39286" %)
1681 **Aws:**
1682
1683 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1684
1685
1686
1687 == 6.3 How to change the uplink interval？ ==
1688
1689 [[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"]]
1690
1691
1692
1693 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1694
1695 [[image:image-20220615153355-1.png]]
1696
1697 [[image:1655802313617-381.png]]
1698
1699
1700 (((
1701 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.
1702 )))
1703
1704
1705 Input password and ATZ to activate LHT65N,As shown below:
1706
1707 [[image:image-20220615154519-3.png||height="672" width="807"]]
1708
1709
1710
1711 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1712
1713
1714 [[image:image-20220615153355-1.png]]
1715
1716
1717 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1718
1719 [[image:image-20220615170542-5.png]]
1720
1721
1722 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1723
1724 (% _msthash="506146" _msttexthash="52173160" %)
1725 First connect the four lines；(% style="display:none" %)
1726
1727 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1728
1729
1730 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1731
1732 [[image:image-20220621170938-2.png]]
1733
1734
1735 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1736
1737 [[image:image-20220615171334-6.png]]
1738
1739
1740 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1741
1742
1743 When this interface appears, it indicates that the download has been completed.
1744
1745 [[image:image-20220620160723-8.png]]
1746
1747
1748 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1749
1750
1751 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1752
1753 [[image:image-20220623110706-1.png]]
1754
1755
1756 [[image:image-20220623112117-4.png||height="459" width="343"]]
1757
1758 (((
1759 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.
1760 )))
1761
1762
1763 Input password and ATZ to activate LHT65N,As shown below:
1764
1765 [[image:image-20220615154519-3.png||height="672" width="807"]]
1766
1767
1768 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1769
1770 [[image:image-20220623110706-1.png]]
1771
1772 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1773
1774 [[image:image-20220615170542-5.png]]
1775
1776
1777 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1778
1779 (% _msthash="506146" _msttexthash="52173160" %)
1780 First connect the four lines；
1781
1782 (% _msthash="506146" _msttexthash="52173160" %)
1783 [[image:image-20220623113959-5.png||height="528" width="397"]]
1784
1785 (% _msthash="506146" _msttexthash="52173160" %)
1786 Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
1787
1788 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1789
1790 [[image:image-20220615171334-6.png]]
1791
1792
1793 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1794
1795
1796 When this interface appears, it indicates that the download has been completed.
1797
1798 [[image:image-20220620160723-8.png]]
1799
1800
1801 Finally,restart reset device again
1802
1803
1804 = 7. Order Info =
1805
1806
1807 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
1808
1809 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1810
1811 (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1812
1813 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1814
1815 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1816
1817 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1818
1819 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1820
1821 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1822
1823 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1824
1825 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1826
1827 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1828
1829 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1830
1831 = 8. Packing Info =
1832
1833
1834 **Package Includes**:
1835
1836 * LHT65N Temperature & Humidity Sensor x 1
1837 * Optional external sensor
1838
1839 **Dimension and weight**:
1840
1841 * Device Size:  10 x 10 x 3.5 cm
1842 * Device Weight: 120.5g
1843
1844 = 9. Reference material =
1845
1846 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1847
1848 = 10. FCC Warning =
1849
1850 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1851
1852 (1) This device may not cause harmful interference；
1853
1854 (2) this device must accept any interference received, including interference that may cause undesired operation.