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Version 198.3 by Xiaoling on 2022/09/06 14:25
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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
20 == 1.1 What is LHT65N Temperature & Humidity Sensor ==
21
22
23 (((
24 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.**
25 )))
26
27 (((
28 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.
29 )))
30
31 (((
32 LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
33 )))
34
35 (((
36 LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
37 )))
38
39 (((
40 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.
41 )))
42
43 (((
44 *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
45 )))
46
47
48
49 == 1.2 Features ==
50
51
52 * Wall mountable
53 * LoRaWAN v1.0.3 Class A protocol
54 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
55 * AT Commands to change parameters
56 * Remote configure parameters via LoRaWAN Downlink
57 * Firmware upgradeable via program port
58 * Built-in 2400mAh battery for up to 10 years of use.
59 * Built-in Temperature & Humidity sensor
60 * Optional External Sensors
61 * Tri-color LED to indicate working status
62 * Datalog feature (Max 3328 records)
63
64
65 == 1.3 Specification ==
66
67
68 (% style="color:#037691" %)**Built-in Temperature Sensor:**
69
70 * Resolution: 0.01 °C
71 * Accuracy Tolerance : Typ ±0.3 °C
72 * Long Term Drift: < 0.02 °C/yr
73 * Operating Range: -40 ~~ 85 °C
74
75 (% style="color:#037691" %)**Built-in Humidity Sensor:**
76
77 * Resolution: 0.04 %RH
78 * Accuracy Tolerance : Typ ±3 %RH
79 * Long Term Drift: < 0.02 °C/yr
80 * Operating Range: 0 ~~ 96 %RH
81
82 (% style="color:#037691" %)**External Temperature Sensor:**
83
84 * Resolution: 0.0625 °C
85 * ±0.5°C accuracy from -10°C to +85°C
86 * ±2°C accuracy from -55°C to +125°C
87 * Operating Range: -55 °C ~~ 125 °C
88
89
90 = 2. Connect LHT65N to IoT Server =
91
92
93 == 2.1 How does LHT65N work? ==
94
95
96 (((
97 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.
98 )))
99
100 (((
101 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.
102 )))
103
104
105
106 == 2.2 How to Activate LHT65N? ==
107
108
109 (((
110 The LHT65N has two working modes:
111 )))
112
113 * (((
114 (% 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.
115 )))
116 * (((
117 (% 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. 
118 )))
119
120 (((
121 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
122 )))
123
124
125 [[image:image-20220515123819-1.png||_mstalt="430742" _mstvisible="3" height="379" width="317"]]
126
127 [[image:image-20220525110604-2.png||_mstalt="427531" _mstvisible="3"]]
128
129
130
131 == 2.3 Example to join LoRaWAN network ==
132
133
134 (% _msthash="315240" _msttexthash="9205482" _mstvisible="1" class="wikigeneratedid" %)
135 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.
136
137 (% _mstvisible="1" class="wikigeneratedid" %)
138 [[image:image-20220522232442-1.png||_mstalt="427830" _mstvisible="3" height="387" width="648"]]
139
140
141 (((
142 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:
143 )))
144
145
146
147 === 2.3.1 Step 1: Create Device n TTN ===
148
149
150 (((
151 Create a device in TTN V3 with the OTAA keys from LHT65N.
152 )))
153
154 (((
155 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
156 )))
157
158 [[image:image-20220617150003-1.jpeg]]
159
160 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
161
162 Add APP EUI in the application.
163
164
165 [[image:image-20220522232916-3.png||_mstalt="430495" _mstvisible="3"]]
166
167
168 [[image:image-20220522232932-4.png||_mstalt="430157" _mstvisible="3"]]
169
170
171 [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
172
173
174
175 (% style="color:red" %)**Note: LHT65N use same payload as LHT65.**
176
177
178 [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
179
180
181 Input APP EUI,  APP KEY and DEV EUI:
182
183
184 [[image:image-20220522233118-7.png||_mstalt="430430" _mstvisible="3"]]
185
186
187
188
189 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
190
191
192 (((
193 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.
194 )))
195
196 [[image:image-20220522233300-8.png||_mstalt="428389" _mstvisible="3" height="219" width="722"]]
197
198
199
200
201 == 2.4 Uplink Payload ==
202
203
204 (((
205 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.
206 )))
207
208 (((
209 After each uplink, the (% _mstvisible="3" style="color:blue" %)**BLUE LED**(%%) will blink once.
210 )))
211
212 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:426px" %)
213 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 97px;" %)(% _mstvisible="5" %)
214 (((
215 (% _mstvisible="6" %)
216 (% _msthash="1817478" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
217 )))|=(% _mstvisible="4" style="width: 39px;" %)(% _mstvisible="5" %)
218 (((
219 (% _mstvisible="6" %)
220 (% _msthash="1817479" _msttexthash="4550" _mstvisible="8" %)**2**
221 )))|=(% _mstvisible="4" style="width: 100px;" %)(% _mstvisible="5" %)
222 (((
223 (% _mstvisible="6" %)
224 (% _msthash="1817480" _msttexthash="4550" _mstvisible="8" %)**2**
225 )))|=(% _mstvisible="4" style="width: 77px;" %)(% _mstvisible="5" %)
226 (((
227 (% _mstvisible="6" %)
228 (% _msthash="1817481" _msttexthash="4550" _mstvisible="8" %)**2**
229 )))|=(% _mstvisible="4" style="width: 47px;" %)(% _mstvisible="5" %)
230 (((
231 (% _mstvisible="6" %)
232 (% _msthash="1817482" _msttexthash="4459" _mstvisible="8" %)**1**
233 )))|=(% _mstvisible="4" style="width: 51px;" %)(% _mstvisible="5" %)
234 (((
235 (% _mstvisible="6" %)
236 (% _msthash="1817483" _msttexthash="4732" _mstvisible="8" %)**4**
237 )))
238 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:97px" %)(% _mstvisible="5" %)
239 (((
240 (% _mstvisible="6" %)
241 (% _msthash="1817484" _msttexthash="60203" _mstvisible="8" %)**Value**
242 )))|(% _mstvisible="4" style="width:39px" %)(% _mstvisible="5" %)
243 (((
244 (% _mstvisible="6" %)
245 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo" _msthash="1817485" _msttexthash="22594" _mstvisible="7"]]
246 )))|(% _mstvisible="4" style="width:100px" %)(% _mstvisible="5" %)
247 (((
248 (% _mstvisible="6" %)
249 (((
250 (% _mstvisible="7" %)
251 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224742" _msttexthash="405769" _mstvisible="8"]]
252 )))
253 )))|(% _mstvisible="4" style="width:77px" %)(% _mstvisible="5" %)
254 (((
255 (% _mstvisible="6" %)
256 (((
257 (% _mstvisible="7" %)
258 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2224743" _msttexthash="105872" _mstvisible="8"]]
259 )))
260
261 (% _mstvisible="6" %)
262 (((
263 (% _mstvisible="7" %)
264 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224744" _msttexthash="117429" _mstvisible="8"]]
265 )))
266 )))|(% _mstvisible="4" style="width:47px" %)(% _mstvisible="5" %)
267 (((
268 (% _mstvisible="6" %)
269 [[Ext>>||anchor="H2.4.5Ext23" _msthash="1817486" _msttexthash="32331" _mstvisible="7"]] #
270 )))|(% _mstvisible="4" style="width:51px" %)(% _mstvisible="5" %)
271 (((
272 (% _mstvisible="6" %)
273 [[Ext value>>||anchor="H2.4.6Extvalue" _msthash="1817487" _msttexthash="116545" _mstvisible="7"]]
274 )))
275
276 * The First 6 bytes: has fix meanings for every LHT65N.
277 * The 7th byte (EXT #): defines the external sensor model.
278 * 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.)
279
280
281
282 === 2.4.1 Decoder in TTN V3 ===
283
284
285 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.
286
287 Below is the position to put the decoder and LHT65N decoder can be download from here:
288
289
290 [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0 >>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0||_msthash="315253" _msttexthash="3509064" _mstvisible="2"]]
291
292
293 [[image:image-20220522234118-10.png||_mstalt="451464" _mstvisible="3" height="353" width="729"]]
294
295
296
297
298 === 2.4.2 BAT-Battery Info ===
299
300
301 These two bytes of BAT include the battery state and the actually voltage
302
303 [[image:image-20220523152839-18.png||_mstalt="457613" _mstvisible="3"]]
304
305
306 [[image:image-20220522235639-1.png||_mstalt="431392" _mstvisible="3" height="139" width="727"]]
307
308
309 Check the battery voltage for LHT65N.
310
311 * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
312 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
313
314
315
316 === 2.4.3 Built-in Temperature ===
317
318
319 [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
320
321 * Temperature:  0x0ABB/100=27.47℃
322
323
324 [[image:image-20220522235639-3.png||_mstalt="432120" _mstvisible="3"]]
325
326 * Temperature:  (0xF5C6-65536)/100=-26.18℃
327
328
329
330 === 2.4.4 Built-in Humidity ===
331
332
333 [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
334
335 * Humidity:    0x025C/10=60.4%
336
337
338
339 === 2.4.5 Ext # ===
340
341
342 Bytes for External Sensor:
343
344 [[image:image-20220523152822-17.png||_mstalt="454545" _mstvisible="3"]]
345
346
347
348 === 2.4.6 Ext value ===
349
350
351 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
352
353
354 [[image:image-20220522235639-5.png||_mstalt="432848" _mstvisible="3"]]
355
356
357 * DS18B20 temp=0x0ADD/100=27.81℃
358
359 The last 2 bytes of data are meaningless
360
361 [[image:image-20220522235639-6.png||_mstalt="433212" _mstvisible="3"]]
362
363
364 * External temperature= (0xF54F-65536)/100=-27.37℃
365
366 The last 2 bytes of data are meaningless
367
368 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
369
370
371
372 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
373
374
375 (((
376 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:
377 )))
378
379 (((
380
381 )))
382
383 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
384 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 96px;" %)(% _mstvisible="5" %)
385 (((
386 (% _mstvisible="6" %)
387 (% _msthash="1817488" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
388 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
389 (((
390 (% _mstvisible="6" %)
391 (% _msthash="1817489" _msttexthash="4550" _mstvisible="8" %)**2**
392 )))|=(% _mstvisible="4" style="width: 99px;" %)(% _mstvisible="5" %)
393 (((
394 (% _mstvisible="6" %)
395 (% _msthash="1817490" _msttexthash="4550" _mstvisible="8" %)**2**
396 )))|=(% _mstvisible="4" style="width: 132px;" %)(% _mstvisible="5" %)
397 (((
398 (% _mstvisible="6" %)
399 (% _msthash="1817491" _msttexthash="4550" _mstvisible="8" %)**2**
400 )))|=(% _mstvisible="4" style="width: 54px;" %)(% _mstvisible="5" %)
401 (((
402 (% _mstvisible="6" %)
403 (% _msthash="1817492" _msttexthash="4459" _mstvisible="8" %)**1**
404 )))|=(% _mstvisible="4" style="width: 64px;" %)(% _mstvisible="5" %)
405 (((
406 (% _mstvisible="6" %)
407 (% _msthash="1817493" _msttexthash="4732" _mstvisible="8" %)**4**
408 )))
409 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:96px" %)(% _mstvisible="5" %)
410 (((
411 (% _mstvisible="6" %)
412 (% _msthash="1817494" _msttexthash="60203" _mstvisible="8" %)**Value**
413 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
414 (((
415 (% _mstvisible="6" %)
416 [[External temperature>>||anchor="H4.2SetExternalSensorMode" _msthash="1817495" _msttexthash="426517" _mstvisible="7"]]
417 )))|(% _mstvisible="4" style="width:99px" %)(% _mstvisible="5" %)
418 (((
419 (% _mstvisible="6" %)
420 (((
421 (% _mstvisible="7" %)
422 [[Built-In>>||anchor="H2.4.3Built-inTemperature" _msthash="2224745" _msttexthash="100464" _mstvisible="8"]]
423 )))
424
425 (% _mstvisible="6" %)
426 (((
427 (% _mstvisible="7" %)
428 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224746" _msttexthash="184041" _mstvisible="8"]]
429 )))
430 )))|(% _mstvisible="4" style="width:132px" %)(% _mstvisible="5" %)
431 (((
432 (% _mstvisible="6" %)
433 (((
434 (% _msthash="2224747" _msttexthash="136331" _mstvisible="7" %)
435 BAT Status &
436 )))
437
438 (% _mstvisible="6" %)
439 (((
440 (% _mstvisible="7" %)
441 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224748" _msttexthash="311181" _mstvisible="8"]]
442 )))
443 )))|(% _mstvisible="4" style="width:54px" %)(% _mstvisible="5" %)
444 (((
445 (% _msthash="1817496" _msttexthash="147225" _mstvisible="6" %)
446 Status & Ext
447 )))|(% _mstvisible="4" style="width:64px" %)(% _mstvisible="5" %)
448 (((
449 (% _mstvisible="6" %)
450 (((
451 (% _mstvisible="7" %)
452 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2224749" _msttexthash="227175" _mstvisible="8"]]
453 )))
454 )))
455
456 (% _mstvisible="1" %)
457 * (% _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**
458
459 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:469px" %)
460 (% _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]
461 (% _mstvisible="3" %)|(% _msthash="1230921" _msttexthash="60203" _mstvisible="4" style="width:65px" %)Value|(% _mstvisible="4" style="width:267px" %)(% _mstvisible="5" %)
462 (((
463 (% _msthash="1817497" _msttexthash="128427" _mstvisible="6" %)
464 BAT Status
465
466 (% _msthash="1817498" _msttexthash="472784" _mstvisible="6" %)
467 00(b): Ultra Low ( BAT <= 2.50v)
468
469 (% _msthash="1817499" _msttexthash="483678" _mstvisible="6" %)
470 01(b): Low  (2.50v <=BAT <= 2.55v)
471
472 (% _msthash="1817500" _msttexthash="440791" _mstvisible="6" %)
473 10(b): OK   (2.55v <= BAT <=2.65v)
474
475 (% _msthash="1817501" _msttexthash="334191" _mstvisible="6" %)
476 11(b): Good   (BAT >= 2.65v)
477 )))|(% _mstvisible="4" style="width:134px" %)(% _mstvisible="5" %)
478 (((
479 (% _mstvisible="6" %)
480 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="1817502" _msttexthash="311181" _mstvisible="7"]]
481
482 (% _mstvisible="6" %)
483
484 )))
485
486 * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
487
488 (% border="1" cellspacing="8" style="background-color:#ffffcc; color:green; width:520px" %)
489 |(% 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]**
490 |(% 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)
491
492 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
493 * (% 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.
494 * (% 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)
495
496
497
498
499 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
500
501
502 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
503
504 be used to power the external ADC sensor; user can control the power on time for this
505
506 sensor by setting:
507
508 AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)**Time to power this sensor, from 0 ~~ 65535ms**
509
510 For example:
511
512 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
513
514
515 Or use **downlink command A2** to set the same.
516
517 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
518
519 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.
520
521 [[image:image-20220628150112-1.png||height="241" width="285"]]
522
523
524 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
525
526 [[image:image-20220628150714-4.png]]
527
528
529 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.
530
531
532 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
533
534 [[image:image-20220628151005-5.png]]
535
536
537 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
538
539 [[image:image-20220628151056-6.png]]
540
541
542 3) Within range
543
544 [[image:image-20220628151143-7.png]]
545
546
547
548 ==== 2.4.6.4 Ext~=2 TMP117 Sensor （since v1.3） ====
549
550
551 **Ext=2,Temperature Sensor(TMP117)：**
552
553 [[image:image-20220906102307-7.png]]
554
555
556 (% style="color:blue" %)**Interrupt Mode and Counting Mode:**
557
558 The external cable NE2 can be use for MOD4 and MOD8
559
560
561
562
563 ==== 2.4.6.5 Ext~=4 Interrupt Mode （since v1.3） ====
564
565
566 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will send an uplink when there is a trigger.**
567
568
569 (% style="color:blue" %)**Interrupt Mode can be used to connect to external interrupt sensors such as:**
570
571 **Case 1: Door Sensor.** 3.3v Out for such sensor is just to detect Open/Close.
572
573 In Open State, the power consumption is the same as if there is no probe
574
575 In Close state, the power consumption will be 3uA higher than normal.
576
577 [[image:image-20220906100852-1.png||height="205" width="377"]]
578
579
580 Ext=4,Interrupt Sensor：
581
582 (% border="2" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:512px" %)
583 |(% style="width:117px" %)(((
584 AT+EXT=4,1
585 )))|(% style="width:371px" %)(((
586 Sent uplink packet in both rising and falling interrupt
587 )))
588 |(% style="width:117px" %)(((
589 AT+EXT=4,2
590 )))|(% style="width:371px" %)(((
591 Sent uplink packet only in falling interrupt
592 )))
593 |(% style="width:117px" %)(((
594 AT+EXT=4,3
595 )))|(% style="width:371px" %)(((
596 Sent uplink packet only in rising interrupt
597 )))
598
599 Trigger by falling edge:
600
601 [[image:image-20220906101145-2.png]]
602
603
604 Trigger by raising edge：
605
606 [[image:image-20220906101145-3.png]]
607
608
609
610
611 ==== 2.4.6.6 Ext~=8 Counting Mode（since v1.3） ====
612
613
614 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will count for every interrupt and uplink periodically.**
615
616
617 (% style="color:blue" %)**Case 1**(%%):  Low power consumption Flow Sensor, such flow sensor has pulse output and the power consumption in uA level and can be powered by LHT65N.
618
619 [[image:image-20220906101320-4.png||height="366" width="698"]]
620
621
622 (% style="color:blue" %)**Case 2**(%%):  Normal Flow Sensor: Such flow sensor has higher power consumption and is not suitable to be powered by LHT65N. It is powered by external power and output <3.3v pulse
623
624 [[image:image-20220906101320-5.png||height="353" width="696"]]
625
626 Ext=8, Counting Sensor ( 4 bytes)：
627
628 (% border="2" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:381px" %)
629 |(% style="width:138px" %)(((
630 AT+EXT=8,0
631 )))|(% style="width:240px" %)(((
632 Count at falling interrupt
633 )))
634 |(% style="width:138px" %)(((
635 AT+EXT=8,1
636 )))|(% style="width:240px" %)(((
637 Count at rising interrupt
638 )))
639 |(% style="width:138px" %)(((
640 AT+SETCNT=60
641 )))|(% style="width:240px" %)(((
642 Sent current count to 60
643 )))
644
645 [[image:image-20220906101320-6.png]]
646
647
648 (% style="color:blue" %)**A2 downlink Command：**
649
650 A2 02:  Same as AT+EXT=2 (AT+EXT= second byte)
651
652 A2 06 01 F4:  Same as AT+EXT=6,500 (AT+EXT= second byte, third and fourth bytes)
653
654 A2 04 02:  Same as AT+EXT=4,2 (AT+EXT= second byte, third byte)
655
656 A2 08 01 00:  Same as AT+EXT=8,0 (AT+EXT= second byte, fourth byte)
657
658 A2 08 02 00 00 00 3C:  Same as AT+ SETCNT=60  (AT+ SETCNT = 4th byte and 5th byte and 6th byte and 7th byte)
659
660
661 (% style="color:blue" %)**Modified ATWOOD command for external sensor TMP117 or DS18B20 temperature alarm.**
662
663
664 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
665
666 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
667
668 0): Cancel
669
670 1): Threshold alarm
671
672 2): Fluctuation alarm
673
674
675 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
676
677 (% style="color:red" %)**Note: When the collection time is less than 60 seconds and always exceeds the set alarm threshold, the sending interval will not be the collection time, but will be sent every 60 seconds.**
678
679
680 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
681
682 1):  If Alarm Mode is set to 1: Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
683
684 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
685
686
687 2):  If Alarm Mode is set to 2: Parameter 3 is valid, which represents the difference between the currently collected temperature and the last uploaded temperature.
688
689 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
690
691 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
692
693
694 (% style="color:blue" %)** Downlink:**
695
696 0xA5 00 ~-~- AT+WMOD=0.
697
698 0xA5 01 0A 11 94 29 04 ~-~- AT+WMOD=1,10,45,105  (AT+WMOD = second byte, third byte, fourth and fifth bytes divided by 100, sixth and seventh bytes divided by 100 )
699
700 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
701
702 0xA5 FF ~-~- After the device receives it, upload the current alarm configuration (FPORT=8). Such as 01 0A 11 94 29 04 or 02 0A 02.
703
704
705
706
707 == 2.5 Show data on Datacake ==
708
709
710 (((
711 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:
712 )))
713
714 (((
715
716 )))
717
718 (((
719 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
720 )))
721
722 (((
723 (% 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.
724 )))
725
726 (((
727
728 )))
729
730 (((
731 Add Datacake:
732 )))
733
734
735 [[image:image-20220523000825-7.png||_mstalt="429884" _mstvisible="3" height="262" width="583"]]
736
737
738
739 Select default key as Access Key:
740
741
742 [[image:image-20220523000825-8.png||_mstalt="430248" _mstvisible="3" height="453" width="406"]]
743
744
745 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/||_mstvisible="2"]]) , add LHT65 device.
746
747
748 [[image:image-20220523000825-9.png||_mstalt="430612" _mstvisible="3" height="366" width="392"]]
749
750
751 [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
752
753
754
755 == 2.6 Datalog Feature ==
756
757
758 (((
759 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.
760 )))
761
762
763
764 === 2.6.1 Ways to get datalog via LoRaWAN ===
765
766
767 There are two methods:
768
769 1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specifying time range.
770 1. Set [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]], LHT65N will wait for ACK for every uplink, when there is no LoRaWAN network, LHT65N will mark these records with non-ack message and store the sensor data, and it will send all messages (10s interval) after the network recovery. note: a) LHT65N will do ack check for data records sending to make sure every data arrive server. b) LHT65N will send data in CONFIRMED Mode when PNACKMD=1, but it won't re-transmit the same packet , it will just mark it as NONE-ACK and resend after network is detected.
771
772 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
773
774 [[image:image-20220703111700-2.png||height="381" width="1119"]]
775
776
777 === 2.6.2 Unix TimeStamp ===
778
779
780 LHT65N uses Unix TimeStamp format based on
781
782
783 [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
784
785
786
787 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
788
789 Below is the converter example
790
791 [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
792
793 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
794
795
796
797 === 2.6.3 Set Device Time ===
798
799
800 (((
801 There are two ways to set device's time:
802 )))
803
804 (((
805 **~1. Through LoRaWAN MAC Command (Default settings)**
806 )))
807
808 (((
809 User need to set SYNCMOD=1 to enable sync time via MAC command.
810 )))
811
812 (((
813 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).
814 )))
815
816 (((
817 (% 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.**
818 )))
819
820 (((
821
822 )))
823
824 (((
825 **2. Manually Set Time**
826 )))
827
828 (((
829 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
830 )))
831
832
833
834 === 2.6.4 Poll sensor value ===
835
836
837 User can poll sensor value based on timestamps from the server. Below is the downlink command.
838
839 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
840
841
842 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.
843
844 For example, downlink command **31 5FC5F350 5FC6 0160 05**
845
846 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
847
848 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
849
850
851
852 === 2.6.5 Datalog Uplink payload ===
853
854
855 (% _msthash="315267" _msttexthash="2245087" _mstvisible="1" %)
856 The Datalog poll reply uplink will use below payload format.
857
858 (% _mstvisible="1" %)
859 (((
860 (% _mstvisible="2" %)
861
862
863 (% _mstvisible="2" %)
864 (% _msthash="506080" _msttexthash="451581" _mstvisible="4" %)**Retrieval data payload**
865 )))
866
867 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
868 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 93px;" %)(% _mstvisible="5" %)
869 (((
870 (% _mstvisible="6" %)
871 (((
872 (% _mstvisible="7" %)
873 (% _msthash="2224750" _msttexthash="161122" _mstvisible="9" %)**Size(bytes)**
874 )))
875 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
876 (((
877 (% _mstvisible="6" %)
878 (((
879 (% _mstvisible="7" %)
880 (% _msthash="2224751" _msttexthash="4550" _mstvisible="9" %)**2**
881 )))
882 )))|=(% _mstvisible="4" style="width: 102px;" %)(% _mstvisible="5" %)
883 (((
884 (% _mstvisible="6" %)
885 (((
886 (% _mstvisible="7" %)
887 (% _msthash="2224752" _msttexthash="4550" _mstvisible="9" %)**2**
888 )))
889 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
890 (((
891 (% _mstvisible="6" %)
892 (((
893 (% _mstvisible="7" %)
894 (% _msthash="2224753" _msttexthash="4550" _mstvisible="9" %)**2**
895 )))
896 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
897 (((
898 (% _mstvisible="6" %)
899 (((
900 (% _mstvisible="7" %)
901 (% _msthash="2224754" _msttexthash="4459" _mstvisible="9" %)**1**
902 )))
903 )))|=(% _mstvisible="4" style="width: 48px;" %)(% _mstvisible="5" %)
904 (((
905 (% _mstvisible="6" %)
906 (((
907 (% _mstvisible="7" %)
908 (% _msthash="2224755" _msttexthash="4732" _mstvisible="9" %)**4**
909 )))
910 )))
911 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:93px" %)(% _mstvisible="5" %)
912 (((
913 (% _mstvisible="6" %)
914 (((
915 (% _mstvisible="7" %)
916 (% _msthash="2224756" _msttexthash="60203" _mstvisible="9" %)**Value**
917 )))
918 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
919 (((
920 (% _mstvisible="6" %)
921 (((
922 (% _mstvisible="7" %)
923 [[External sensor data>>||anchor="H2.4.6Extvalue" _msthash="2224757" _msttexthash="386672" _mstvisible="8"]]
924 )))
925 )))|(% _mstvisible="4" style="width:102px" %)(% _mstvisible="5" %)
926 (((
927 (% _mstvisible="6" %)
928 (((
929 (% _mstvisible="7" %)
930 (((
931 (% _mstvisible="8" %)
932 [[Built In>>||anchor="H2.4.3Built-inTemperature" _msthash="2671864" _msttexthash="91065" _mstvisible="9"]]
933 )))
934 )))
935
936 (% _mstvisible="6" %)
937 (((
938 (% _mstvisible="7" %)
939 (((
940 (% _mstvisible="8" %)
941 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2671865" _msttexthash="184041" _mstvisible="9"]]
942 )))
943 )))
944 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
945 (((
946 (% _mstvisible="6" %)
947 (((
948 (% _mstvisible="7" %)
949 (((
950 (% _mstvisible="8" %)
951 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2671866" _msttexthash="105872" _mstvisible="9"]]
952 )))
953 )))
954
955 (% _mstvisible="6" %)
956 (((
957 (% _mstvisible="7" %)
958 (((
959 (% _mstvisible="8" %)
960 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2671867" _msttexthash="117429" _mstvisible="9"]]
961 )))
962 )))
963 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
964 (((
965 (% _mstvisible="6" %)
966 (((
967 (% _msthash="2224758" _msttexthash="390390" _mstvisible="7" %)
968 Poll message flag & Ext
969 )))
970 )))|(% _mstvisible="4" style="width:48px" %)(% _mstvisible="5" %)
971 (((
972 (% _mstvisible="6" %)
973 (((
974 (% _mstvisible="7" %)
975 (((
976 (% _mstvisible="8" %)
977 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2671868" _msttexthash="227175" _mstvisible="9"]]
978 )))
979 )))
980
981 (% _mstvisible="6" %)
982 (((
983 (% _mstvisible="7" %)
984 (((
985 (% _mstvisible="8" %)
986
987 )))
988 )))
989 )))
990
991 (% _mstvisible="1" %)
992 (% _msthash="315268" _msttexthash="390390" _mstvisible="3" %)**Poll message flag & Ext**
993
994 (% _mstvisible="1" %)
995 [[image:image-20220523152208-14.png||_mstalt="452920" _mstvisible="3"]]
996
997 (% _mstvisible="1" %)
998 (((
999 (% _mstvisible="2" %)
1000 (((
1001 (% _msthash="736723" _msttexthash="2005003" _mstvisible="3" %)
1002 (((
1003 Poll Message Flag: 1: This message is a poll message reply.
1004 )))
1005 )))
1006 )))
1007
1008 (% _mstvisible="1" %)
1009 * (% _mstvisible="3" %)
1010 (((
1011 (% _mstvisible="4" %)
1012 (((
1013 (% _msthash="1197157" _msttexthash="561548" _mstvisible="5" %)
1014 (((
1015 Poll Message Flag is set to 1.
1016 )))
1017 )))
1018 )))
1019 * (% _mstvisible="3" %)
1020 (((
1021 (% _mstvisible="4" %)
1022 (((
1023 (% _msthash="1197158" _msttexthash="9284964" _mstvisible="5" %)
1024 (((
1025 Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
1026 )))
1027 )))
1028 )))
1029
1030 (% _mstvisible="1" %)
1031 (((
1032 (% _mstvisible="2" %)
1033 (((
1034 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
1035 (((
1036
1037 )))
1038
1039 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
1040 (((
1041 For example, in US915 band, the max payload for different DR is:
1042 )))
1043 )))
1044 )))
1045
1046 (% _mstvisible="1" %)
1047 (((
1048 (% _mstvisible="2" %)
1049 (((
1050 (% _msthash="736725" _msttexthash="1065532" _mstvisible="3" %)
1051 (((
1052 a) DR0: max is 11 bytes so one entry of data
1053 )))
1054 )))
1055 )))
1056
1057 (% _mstvisible="1" %)
1058 (((
1059 (% _mstvisible="2" %)
1060 (((
1061 (% _msthash="736726" _msttexthash="3265665" _mstvisible="3" %)
1062 (((
1063 b) DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
1064 )))
1065 )))
1066 )))
1067
1068 (% _mstvisible="1" %)
1069 (((
1070 (% _mstvisible="2" %)
1071 (((
1072 (% _msthash="736727" _msttexthash="1454115" _mstvisible="3" style="text-align: left;" %)
1073 (((
1074 c) DR2: total payload includes 11 entries of data
1075 )))
1076 )))
1077 )))
1078
1079 (% _mstvisible="1" %)
1080 (((
1081 (% _mstvisible="2" %)
1082 (((
1083 (% _msthash="736728" _msttexthash="1483924" _mstvisible="3" style="text-align: left;" %)
1084 (((
1085 d) DR3: total payload includes 22 entries of data.
1086 )))
1087 )))
1088 )))
1089
1090 (% _mstvisible="1" %)
1091 (((
1092 (% _mstvisible="2" %)
1093 (((
1094 (% _msthash="736729" _msttexthash="5848349" _mstvisible="3" style="text-align: left;" %)
1095 (((
1096 If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0   
1097 )))
1098 )))
1099 )))
1100
1101
1102 (% _mstvisible="1" style="text-align: left;" %)
1103 (% _msthash="315269" _msttexthash="104767" _mstvisible="3" %)**Example:**
1104
1105 (% _msthash="315270" _msttexthash="913822" _mstvisible="1" style="text-align: left;" %)
1106 If LHT65N has below data inside Flash:
1107
1108 (% _mstvisible="1" %)
1109 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
1110
1111 (% _mstvisible="1" %)
1112 (((
1113 (% _msthash="506081" _msttexthash="1663961" _mstvisible="2" style="text-align: left;" %)
1114 If user sends below downlink command: (% _mstvisible="3" style="background-color:yellow" %)3160065F9760066DA705
1115 )))
1116
1117 (% _mstvisible="1" %)
1118 (((
1119 (% _msthash="506082" _msttexthash="1092494" _mstvisible="2" style="text-align: left;" %)
1120 Where : Start time: 60065F97 = time 21/1/19 04:27:03
1121 )))
1122
1123 (% _mstvisible="1" %)
1124 (((
1125 (% _msthash="506083" _msttexthash="737269" _mstvisible="2" style="text-align: left;" %)
1126 Stop time 60066DA7= time 21/1/19 05:27:(% _msthash="903005" _msttexthash="9672" _mstvisible="2" %)03
1127 )))
1128
1129 (% _mstvisible="1" %)
1130 (((
1131 (% _mstvisible="2" %)
1132
1133 )))
1134
1135 (% _mstvisible="1" %)
1136 (((
1137 (% _msthash="506084" _msttexthash="751218" _mstvisible="2" style="text-align: left;" %)
1138 LHT65N will uplink this payload.
1139 )))
1140
1141 (% _mstvisible="1" %)
1142 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
1143
1144 (% _msthash="315271" _msttexthash="12012546" _mstvisible="1" style="text-align: left;" %)
1145 (((
1146 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
1147 )))
1148
1149 (% _msthash="315237" _msttexthash="1385839" %)
1150 (((
1151 Where the first 11 bytes is for the first entry:
1152 )))
1153
1154 (% _msthash="315238" _msttexthash="274846" %)
1155 (((
1156 7FFF089801464160065F97
1157 )))
1158
1159 (% _msthash="315239" _msttexthash="617435" %)
1160 (((
1161 Ext sensor data=0x7FFF/100=327.67
1162 )))
1163
1164 (% _msthash="315240" _msttexthash="270543" %)
1165 (((
1166 Temp=0x0898/100=22.00
1167 )))
1168
1169 (% _msthash="315241" _msttexthash="211783" %)
1170 (((
1171 Hum=0x0146/10=32.6
1172 )))
1173
1174 (% _msthash="315242" _msttexthash="1569776" %)
1175 (((
1176 poll message flag & Ext=0x41,means reply data,Ext=1
1177 )))
1178
1179 (% _msthash="315243" _msttexthash="1120509" %)
1180 (((
1181 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
1182 )))
1183
1184
1185
1186 == 2.7 Alarm Mode ==
1187
1188
1189 (((
1190 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.
1191 )))
1192
1193 (((
1194 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
1195
1196
1197 )))
1198
1199 (((
1200 **AT COMMAND FOR ALARM MODE:**
1201 )))
1202
1203 (% _mstvisible="1" class="box infomessage" %)
1204 (((
1205 (((
1206 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled)
1207 )))
1208
1209 (((
1210 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1211 )))
1212
1213 (((
1214 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1215 )))
1216
1217 (((
1218 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
1219 )))
1220
1221 (((
1222 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1223 )))
1224 )))
1225
1226 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1227
1228 Total bytes: 8 bytes
1229
1230 **Example:**AA0100010001003C
1231
1232 WMOD=01
1233
1234 CITEMP=0001
1235
1236 TEMPlow=0001
1237
1238 TEMPhigh=003C
1239
1240
1241
1242 == 2.8 LED Indicator ==
1243
1244
1245 The LHT65 has a triple color LED which for easy showing different stage .
1246
1247 While user press ACT button, the LED will work as per LED status with ACT button.
1248
1249 In a normal working state:
1250
1251 * For each uplink, the BLUE LED or RED LED will blink once.
1252 BLUE LED when external sensor is connected.
1253 * RED LED when external sensor is not connected
1254 * For each success downlink, the PURPLE LED will blink once
1255
1256
1257
1258
1259 == 2.9 installation ==
1260
1261
1262 (% _mstvisible="1" %)
1263 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
1264
1265
1266
1267 = 3. Sensors and Accessories =
1268
1269
1270 == 3.1 E2 Extension Cable ==
1271
1272
1273 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1274
1275
1276 **1m long breakout cable for LHT65N. Features:**
1277
1278 * (((
1279 Use for AT Command， works for both LHT52/LHT65N
1280 )))
1281 * (((
1282 Update firmware for LHT65N, works for both LHT52/LHT65N
1283 )))
1284 * (((
1285 Supports ADC mode to monitor external ADC
1286 )))
1287 * (((
1288 Supports Interrupt mode
1289 )))
1290 * (((
1291 Exposed All pins from the LHT65N Type-C connector.
1292
1293
1294
1295 )))
1296
1297 [[image:image-20220619092421-3.png||height="371" width="529"]]
1298
1299
1300
1301
1302 == 3.2 E3 Temperature Probe ==
1303
1304
1305 [[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"]]
1306
1307
1308 Temperature sensor with 2 meters cable long
1309
1310 * Resolution: 0.0625 °C
1311 * ±0.5°C accuracy from -10°C to +85°C
1312 * ±2°C accuracy from -55°C to +125°C
1313 * Operating Range: -40 ~~ 125 °C
1314 * Working voltage 2.35v ~~ 5v
1315
1316
1317
1318
1319 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1320
1321
1322 (((
1323 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1324 )))
1325
1326 * (((
1327 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1328 )))
1329
1330 * (((
1331 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1332 )))
1333
1334 (((
1335 There are two kinds of commands to configure LHT65N, they are:
1336 )))
1337
1338 * (((
1339 (% style="color:#4f81bd" %)**General Commands**.
1340 )))
1341
1342 (((
1343 These commands are to configure:
1344 )))
1345
1346 1. (((
1347 General system settings like: uplink interval.
1348 )))
1349 1. (((
1350 LoRaWAN protocol & radio-related commands.
1351 )))
1352
1353 (((
1354 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]]
1355 )))
1356
1357 * (((
1358 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1359 )))
1360
1361 (((
1362 These commands are only valid for LHT65N, as below:
1363 )))
1364
1365
1366
1367 == 4.1 Set Transmit Interval Time ==
1368
1369
1370 Feature: Change LoRaWAN End Node Transmit Interval.
1371
1372
1373 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1374
1375 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
1376
1377
1378 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1379
1380 Format: Command Code (0x01) followed by 3 bytes time value.
1381
1382 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1383
1384 * **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1385
1386 * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1387
1388
1389
1390
1391 == 4.2 Set External Sensor Mode ==
1392
1393
1394 Feature: Change External Sensor Mode.
1395
1396
1397 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1398
1399 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1400
1401
1402 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1403
1404 Total bytes: 2 ~~ 5 bytes
1405
1406 **Example:**
1407
1408 * 0xA201: Set external sensor type to E1
1409
1410 * 0xA209: Same as AT+EXT=9
1411
1412 * 0xA20702003c: Same as AT+SETCNT=60
1413
1414
1415
1416
1417 == 4.3 Enable/Disable uplink Temperature probe ID ==
1418
1419
1420 (((
1421 Feature: If PID is enabled, device will send the temperature probe ID on:
1422 )))
1423
1424 * (((
1425 First Packet after OTAA Join
1426 )))
1427 * (((
1428 Every 24 hours since the first packet.
1429 )))
1430
1431 (((
1432 PID is default set to disable (0)
1433
1434
1435 )))
1436
1437 (% style="color:#4f81bd" %)**AT Command:**
1438
1439 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1440
1441
1442 (% style="color:#4f81bd" %)**Downlink Command:**
1443
1444 * **0xA800**  **~-~->** AT+PID=0
1445 * **0xA801**     **~-~->** AT+PID=1
1446
1447
1448
1449
1450 == 4.4 Set Password ==
1451
1452
1453 Feature: Set device password, max 9 digits
1454
1455
1456 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1457
1458 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1459
1460
1461 (% style="color:#4f81bd" %)**Downlink Command:**
1462
1463 No downlink command for this feature.
1464
1465
1466
1467 == 4.5 Quit AT Command ==
1468
1469
1470 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1471
1472
1473 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1474
1475 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1476
1477
1478 (% style="color:#4f81bd" %)**Downlink Command:**
1479
1480 No downlink command for this feature.
1481
1482
1483
1484 == 4.6 Set to sleep mode ==
1485
1486
1487 Feature: Set device to sleep mode
1488
1489 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1490 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1491
1492 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1493
1494 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1495
1496
1497 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1498
1499 * There is no downlink command to set to Sleep mode.
1500
1501
1502
1503
1504 == 4.7 Set system time ==
1505
1506
1507 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1508
1509
1510 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1511
1512 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1513
1514
1515 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1516
1517 0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1518
1519
1520
1521 == 4.8 Set Time Sync Mode ==
1522
1523
1524 (((
1525 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1526 )))
1527
1528 (((
1529 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.
1530
1531
1532 )))
1533
1534 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1535
1536 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1537
1538
1539 (% style="color:#4f81bd" %)**Downlink Command:**
1540
1541 0x28 01 ~/~/ Same As AT+SYNCMOD=1
1542 0x28 00 ~/~/ Same As AT+SYNCMOD=0
1543
1544
1545
1546 == 4.9 Set Time Sync Interval ==
1547
1548
1549 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1550
1551
1552 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1553
1554 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1555
1556
1557 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1558
1559 **0x29 0A** ~/~/ Same as AT+SYNCTDC=0x0A
1560
1561
1562
1563 == 4.10 Print data entries base on page. ==
1564
1565
1566 Feature: Print the sector data from start page to stop page (max is 416 pages).
1567
1568
1569 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1570
1571 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1572
1573
1574 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1575
1576 No downlink commands for feature
1577
1578
1579
1580 == 4.11 Print last few data entries. ==
1581
1582
1583 Feature: Print the last few data entries
1584
1585
1586 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1587
1588 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1589
1590
1591 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1592
1593 No downlink commands for feature
1594
1595
1596
1597 == 4.12 Clear Flash Record ==
1598
1599
1600 Feature: Clear flash storage for data log feature.
1601
1602
1603 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1604
1605 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1606
1607
1608 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1609
1610 * Example: 0xA301 ~/~/Same as AT+CLRDTA
1611
1612
1613
1614
1615 == 4.13 Auto Send None-ACK messages ==
1616
1617
1618 (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
1619 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.
1620
1621
1622 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1623
1624 (% _msthash="315396" _msttexthash="734682" _mstvisible="1" %)
1625 The default factory setting is 0
1626
1627 (% _mstvisible="1" border="1" style="background-color:#ffffcc; color:green; width:450px" %)
1628 (% _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**
1629 (% _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
1630
1631 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1632
1633 * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1634
1635
1636
1637
1638 = 5. Battery & How to replace =
1639
1640
1641 == 5.1 Battery Type ==
1642
1643
1644 (((
1645 (((
1646 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.
1647 )))
1648 )))
1649
1650 (((
1651
1652 )))
1653
1654 (((
1655 (((
1656 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1657 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1658 )))
1659 )))
1660
1661 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1662
1663
1664
1665 == 5.2 Replace Battery ==
1666
1667
1668 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.
1669
1670 [[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"]]
1671
1672
1673 == 5.3 Battery Life Analyze ==
1674
1675
1676 (((
1677 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:
1678 [[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]]
1679 )))
1680
1681 (((
1682
1683 )))
1684
1685 (((
1686 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]]
1687 )))
1688
1689
1690
1691 = 6. FAQ =
1692
1693
1694 == 6.1 How to use AT Command? ==
1695
1696
1697 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.
1698
1699 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1700
1701
1702 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1703
1704 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1705 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1706 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1707 * (% style="background-color:yellow" %)**USB to TTL 3.3V <~-~-> D-**
1708
1709 (((
1710 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.
1711 )))
1712
1713
1714 Input password and ATZ to activate LHT65N,As shown below:
1715
1716 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1717
1718
1719 (% _msthash="506066" _msttexthash="544869" %)
1720 AT Command List is as below:
1721
1722 (% _msthash="506067" _msttexthash="361920" %)
1723 AT+<CMD>? :  Help on <CMD>
1724
1725 (% _msthash="506068" _msttexthash="243061" %)
1726 AT+<CMD> :  Run <CMD>
1727
1728 (% _msthash="506069" _msttexthash="704197" %)
1729 AT+<CMD>=<value> :  Set the value
1730
1731 (% _msthash="506070" _msttexthash="455676" %)
1732 AT+<CMD>=? :  Get the value
1733
1734 (% _msthash="506071" _msttexthash="670553" %)
1735 AT+DEBUG:  Set more info output
1736
1737 (% _msthash="506072" _msttexthash="485888" %)
1738 ATZ:  Trig a reset of the MCU
1739
1740 (% _msthash="506073" _msttexthash="2068872" %)
1741 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1742
1743 (% _msthash="506074" _msttexthash="689169" %)
1744 AT+DEUI:  Get or Set the Device EUI
1745
1746 (% _msthash="506075" _msttexthash="960414" %)
1747 AT+DADDR:  Get or Set the Device Address
1748
1749 (% _msthash="506076" _msttexthash="1079897" %)
1750 AT+APPKEY:  Get or Set the Application Key
1751
1752 (% _msthash="506077" _msttexthash="1326143" %)
1753 AT+NWKSKEY:  Get or Set the Network Session Key
1754
1755 (% _msthash="506078" _msttexthash="1573000" %)
1756 AT+APPSKEY:  Get or Set the Application Session Key
1757
1758 (% _msthash="506079" _msttexthash="1041729" %)
1759 AT+APPEUI:  Get or Set the Application EUI
1760
1761 (% _msthash="506080" _msttexthash="2104206" %)
1762 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1763
1764 (% _msthash="506081" _msttexthash="3369288" %)
1765 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1766
1767 (% _msthash="506082" _msttexthash="1894529" %)
1768 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1769
1770 (% _msthash="506083" _msttexthash="3864172" %)
1771 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1772
1773 (% _msthash="506084" _msttexthash="1712204" %)
1774 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1775
1776 (% _msthash="506085" _msttexthash="1281202" %)
1777 AT+RX2FQ:  Get or Set the Rx2 window frequency
1778
1779 (% _msthash="506086" _msttexthash="2796781" %)
1780 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1781
1782 (% _msthash="506087" _msttexthash="3285165" %)
1783 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1784
1785 (% _msthash="506088" _msttexthash="3286179" %)
1786 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1787
1788 (% _msthash="506089" _msttexthash="4703803" %)
1789 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1790
1791 (% _msthash="506090" _msttexthash="4704999" %)
1792 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1793
1794 (% _msthash="506091" _msttexthash="1528683" %)
1795 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1796
1797 (% _msthash="506092" _msttexthash="757185" %)
1798 AT+NWKID:  Get or Set the Network ID
1799
1800 (% _msthash="506093" _msttexthash="1156597" %)
1801 AT+FCU:  Get or Set the Frame Counter Uplink
1802
1803 (% _msthash="506094" _msttexthash="1273987" %)
1804 AT+FCD:  Get or Set the Frame Counter Downlink
1805
1806 (% _msthash="506095" _msttexthash="859222" %)
1807 AT+CLASS:  Get or Set the Device Class
1808
1809 (% _msthash="506096" _msttexthash="384852" %)
1810 AT+JOIN:  Join network
1811
1812 (% _msthash="506097" _msttexthash="548626" %)
1813 AT+NJS:  Get the join status
1814
1815 (% _msthash="506098" _msttexthash="2546206" %)
1816 AT+SENDB:  Send hexadecimal data along with the application port
1817
1818 (% _msthash="506099" _msttexthash="1932307" %)
1819 AT+SEND:  Send text data along with the application port
1820
1821 (% _msthash="506100" _msttexthash="3560557" %)
1822 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1823
1824 (% _msthash="506101" _msttexthash="1429701" %)
1825 AT+RECV:  Print last received data in raw format
1826
1827 (% _msthash="506102" _msttexthash="1735981" %)
1828 AT+VER:  Get current image version and Frequency Band
1829
1830 (% _msthash="506103" _msttexthash="1189474" %)
1831 AT+CFM:  Get or Set the confirmation mode (0-1)
1832
1833 (% _msthash="506104" _msttexthash="1718210" %)
1834 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1835
1836 (% _msthash="506105" _msttexthash="1339403" %)
1837 AT+SNR:  Get the SNR of the last received packet
1838
1839 (% _msthash="506106" _msttexthash="1452009" %)
1840 AT+RSSI:  Get the RSSI of the last received packet
1841
1842 (% _msthash="506107" _msttexthash="2768142" %)
1843 AT+TDC:  Get or set the application data transmission interval in ms
1844
1845 (% _msthash="506108" _msttexthash="1083914" %)
1846 AT+PORT:  Get or set the application port
1847
1848 (% _msthash="506109" _msttexthash="622440" %)
1849 AT+DISAT:  Disable AT commands
1850
1851 (% _msthash="506110" _msttexthash="868361" %)
1852 AT+PWORD: Set password, max 9 digits
1853
1854 (% _msthash="506111" _msttexthash="2210299" %)
1855 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1856
1857 (% _msthash="506112" _msttexthash="2113462" %)
1858 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1859
1860 (% _msthash="506113" _msttexthash="2087423" %)
1861 AT+PDTA:  Print the sector data from start page to stop page
1862
1863 (% _msthash="506114" _msttexthash="1063127" %)
1864 AT+PLDTA:  Print the last few sets of data
1865
1866 (% _msthash="506115" _msttexthash="1999426" %)
1867 AT+CLRDTA:  Clear the storage, record position back to 1st
1868
1869 (% _msthash="506116" _msttexthash="442130" %)
1870 AT+SLEEP:  Set sleep mode
1871
1872 (% _msthash="506117" _msttexthash="1080222" %)
1873 AT+EXT:  Get or Set external sensor model
1874
1875 (% _msthash="506118" _msttexthash="1309490" %)
1876 AT+BAT:  Get the current battery voltage in mV
1877
1878 (% _msthash="506119" _msttexthash="813891" %)
1879 AT+CFG:  Print all configurations
1880
1881 (% _msthash="506120" _msttexthash="551707" %)
1882 AT+WMOD:  Get or Set Work Mode
1883
1884 (% _msthash="506121" _msttexthash="2631499" %)
1885 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1886
1887 (% _msthash="506122" _msttexthash="3907150" %)
1888 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1889
1890 (% _msthash="506123" _msttexthash="854620" %)
1891 AT+SETCNT:  Set the count at present
1892
1893 (% _msthash="506124" _msttexthash="2554877" %)
1894 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1895
1896 (% _msthash="506125" _msttexthash="771849" %)
1897 AT+RPL:  Get or set response level
1898
1899 (% _msthash="506126" _msttexthash="1484314" %)
1900 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1901
1902 (% _msthash="506127" _msttexthash="741728" %)
1903 AT+LEAPSEC:  Get or Set Leap Second
1904
1905 (% _msthash="506128" _msttexthash="1694017" %)
1906 AT+SYNCMOD:  Get or Set time synchronization method
1907
1908 (% _msthash="506129" _msttexthash="2235948" %)
1909 AT+SYNCTDC:  Get or set time synchronization interval in day
1910
1911 (% _msthash="506130" _msttexthash="425542" %)
1912 AT+PID:  Get or set the PID
1913
1914
1915
1916 == 6.2 Where to use AT commands and Downlink commands ==
1917
1918
1919 **AT commands：**
1920
1921 [[image:image-20220620153708-1.png||height="603" width="723"]]
1922
1923
1924 **Downlink commands:**
1925
1926
1927
1928 (% style="color:blue" %)**TTN:**
1929
1930 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1931
1932
1933
1934 (% style="color:blue" %)**Helium：**
1935
1936 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1937
1938
1939
1940 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1941
1942
1943 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1944
1945
1946 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1947
1948
1949
1950 (% style="color:blue" %)**Aws:**
1951
1952 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1953
1954
1955
1956 == 6.3 How to change the uplink interval？ ==
1957
1958
1959 [[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"]]
1960
1961
1962
1963 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1964
1965
1966 [[image:image-20220615153355-1.png]]
1967
1968 [[image:1655802313617-381.png]]
1969
1970
1971 (((
1972 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.
1973 )))
1974
1975
1976 Input password and ATZ to activate LHT65N,As shown below:
1977
1978 [[image:image-20220615154519-3.png||height="672" width="807"]]
1979
1980
1981
1982 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1983
1984
1985 [[image:image-20220615153355-1.png]]
1986
1987
1988 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1989
1990 [[image:image-20220615170542-5.png]]
1991
1992
1993 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1994
1995 (% _msthash="506146" _msttexthash="52173160" %)
1996 First connect the four lines；(% style="display:none" %)
1997
1998 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1999
2000
2001 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
2002
2003 [[image:image-20220621170938-2.png]]
2004
2005
2006 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
2007
2008 [[image:image-20220615171334-6.png]]
2009
2010
2011 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
2012
2013
2014 When this interface appears, it indicates that the download has been completed.
2015
2016 [[image:image-20220620160723-8.png]]
2017
2018
2019 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
2020
2021
2022
2023 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
2024
2025
2026 [[image:image-20220623110706-1.png]]
2027
2028
2029 [[image:image-20220623112117-4.png||height="459" width="343"]]
2030
2031
2032 (((
2033 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.
2034 )))
2035
2036
2037 Input password and ATZ to activate LHT65N,As shown below:
2038
2039 [[image:image-20220615154519-3.png||height="672" width="807"]]
2040
2041
2042
2043 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
2044
2045
2046 [[image:image-20220623110706-1.png]]
2047
2048
2049 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
2050
2051 [[image:image-20220615170542-5.png]]
2052
2053
2054 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
2055
2056 (% _msthash="506146" _msttexthash="52173160" %)
2057 First connect the four lines；
2058
2059 (% _msthash="506146" _msttexthash="52173160" %)
2060 [[image:image-20220623113959-5.png||height="528" width="397"]]
2061
2062 (% _msthash="506146" _msttexthash="52173160" %)
2063 Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
2064
2065
2066 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
2067
2068 [[image:image-20220615171334-6.png]]
2069
2070
2071 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
2072
2073
2074 When this interface appears, it indicates that the download has been completed.
2075
2076 [[image:image-20220620160723-8.png]]
2077
2078
2079 Finally,restart reset device again
2080
2081
2082
2083 = 7. Order Info =
2084
2085
2086 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
2087
2088 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
2089
2090 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
2091 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
2092 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
2093 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
2094 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
2095 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
2096 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
2097 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
2098
2099 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
2100
2101 * (% style="color:red" %)**E3**(%%): External Temperature Probe
2102
2103
2104
2105
2106 = 8. Packing Info =
2107
2108
2109 **Package Includes**:
2110
2111 * LHT65N Temperature & Humidity Sensor x 1
2112 * Optional external sensor
2113
2114 **Dimension and weight**:
2115
2116 * Device Size:  10 x 10 x 3.5 cm
2117 * Device Weight: 120.5g
2118
2119
2120
2121
2122 = 9. Reference material =
2123
2124
2125 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
2126
2127
2128
2129
2130 = 10. FCC Warning =
2131
2132
2133 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
2134
2135 (1) This device may not cause harmful interference；
2136
2137 (2) this device must accept any interference received, including interference that may cause undesired operation.
2138
2139
2140