Version 200.1 by Bei Jinggeng on 2022/09/27 09:56
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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
66 == 1.3 Specification ==
67
68
69 (% style="color:#037691" %)**Built-in Temperature Sensor:**
70
71 * Resolution: 0.01 °C
72 * Accuracy Tolerance : Typ ±0.3 °C
73 * Long Term Drift: < 0.02 °C/yr
74 * Operating Range: -40 ~~ 85 °C
75
76 (% style="color:#037691" %)**Built-in Humidity Sensor:**
77
78 * Resolution: 0.04 %RH
79 * Accuracy Tolerance : Typ ±3 %RH
80 * Long Term Drift: < 0.02 °C/yr
81 * Operating Range: 0 ~~ 96 %RH
82
83 (% style="color:#037691" %)**External Temperature Sensor:**
84
85 * Resolution: 0.0625 °C
86 * ±0.5°C accuracy from -10°C to +85°C
87 * ±2°C accuracy from -55°C to +125°C
88 * Operating Range: -55 °C ~~ 125 °C
89
90
91
92 = 2. Connect LHT65N to IoT Server =
93
94
95 == 2.1 How does LHT65N work? ==
96
97
98 (((
99 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.
100 )))
101
102 (((
103 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.
104 )))
105
106
107
108 == 2.2 How to Activate LHT65N? ==
109
110
111 (((
112 The LHT65N has two working modes:
113 )))
114
115 * (((
116 (% 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.
117 )))
118 * (((
119 (% 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. 
120 )))
121
122 (((
123 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
124 )))
125
126
127 [[image:image-20220515123819-1.png||_mstalt="430742" _mstvisible="3" height="379" width="317"]]
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129 [[image:image-20220525110604-2.png||_mstalt="427531" _mstvisible="3"]]
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131
132
133 == 2.3 Example to join LoRaWAN network ==
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135
136 (% _msthash="315240" _msttexthash="9205482" _mstvisible="1" class="wikigeneratedid" %)
137 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.
138
139 (% _mstvisible="1" class="wikigeneratedid" %)
140 [[image:image-20220522232442-1.png||_mstalt="427830" _mstvisible="3" height="387" width="648"]]
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142
143 (((
144 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:
145 )))
146
147
148
149 === 2.3.1 Step 1: Create Device n TTN ===
150
151
152 (((
153 Create a device in TTN V3 with the OTAA keys from LHT65N.
154 )))
155
156 (((
157 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
158 )))
159
160 [[image:image-20220617150003-1.jpeg]]
161
162 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
163
164 Add APP EUI in the application.
165
166
167 [[image:image-20220522232916-3.png||_mstalt="430495" _mstvisible="3"]]
168
169
170 [[image:image-20220522232932-4.png||_mstalt="430157" _mstvisible="3"]]
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173 [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
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175
176
177 (% style="color:red" %)**Note: LHT65N use same payload as LHT65.**
178
179
180 [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
181
182
183 Input APP EUI,  APP KEY and DEV EUI:
184
185
186 [[image:image-20220522233118-7.png||_mstalt="430430" _mstvisible="3"]]
187
188
189
190
191 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
192
193
194 (((
195 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.
196 )))
197
198 [[image:image-20220522233300-8.png||_mstalt="428389" _mstvisible="3" height="219" width="722"]]
199
200
201
202
203 == 2.4 Uplink Payload ==
204
205
206 (((
207 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.
208 )))
209
210 (((
211 After each uplink, the (% _mstvisible="3" style="color:blue" %)**BLUE LED**(%%) will blink once.
212 )))
213
214 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:426px" %)
215 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 97px;" %)(% _mstvisible="5" %)
216 (((
217 (% _mstvisible="6" %)
218 (% _msthash="1817478" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
219 )))|=(% _mstvisible="4" style="width: 39px;" %)(% _mstvisible="5" %)
220 (((
221 (% _mstvisible="6" %)
222 (% _msthash="1817479" _msttexthash="4550" _mstvisible="8" %)**2**
223 )))|=(% _mstvisible="4" style="width: 100px;" %)(% _mstvisible="5" %)
224 (((
225 (% _mstvisible="6" %)
226 (% _msthash="1817480" _msttexthash="4550" _mstvisible="8" %)**2**
227 )))|=(% _mstvisible="4" style="width: 77px;" %)(% _mstvisible="5" %)
228 (((
229 (% _mstvisible="6" %)
230 (% _msthash="1817481" _msttexthash="4550" _mstvisible="8" %)**2**
231 )))|=(% _mstvisible="4" style="width: 47px;" %)(% _mstvisible="5" %)
232 (((
233 (% _mstvisible="6" %)
234 (% _msthash="1817482" _msttexthash="4459" _mstvisible="8" %)**1**
235 )))|=(% _mstvisible="4" style="width: 51px;" %)(% _mstvisible="5" %)
236 (((
237 (% _mstvisible="6" %)
238 (% _msthash="1817483" _msttexthash="4732" _mstvisible="8" %)**4**
239 )))
240 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:97px" %)(% _mstvisible="5" %)
241 (((
242 (% _mstvisible="6" %)
243 (% _msthash="1817484" _msttexthash="60203" _mstvisible="8" %)**Value**
244 )))|(% _mstvisible="4" style="width:39px" %)(% _mstvisible="5" %)
245 (((
246 (% _mstvisible="6" %)
247 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo" _msthash="1817485" _msttexthash="22594" _mstvisible="7"]]
248 )))|(% _mstvisible="4" style="width:100px" %)(% _mstvisible="5" %)
249 (((
250 (% _mstvisible="6" %)
251 (((
252 (% _mstvisible="7" %)
253 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224742" _msttexthash="405769" _mstvisible="8"]]
254 )))
255 )))|(% _mstvisible="4" style="width:77px" %)(% _mstvisible="5" %)
256 (((
257 (% _mstvisible="6" %)
258 (((
259 (% _mstvisible="7" %)
260 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2224743" _msttexthash="105872" _mstvisible="8"]]
261 )))
262
263 (% _mstvisible="6" %)
264 (((
265 (% _mstvisible="7" %)
266 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224744" _msttexthash="117429" _mstvisible="8"]]
267 )))
268 )))|(% _mstvisible="4" style="width:47px" %)(% _mstvisible="5" %)
269 (((
270 (% _mstvisible="6" %)
271 [[Ext>>||anchor="H2.4.5Ext23" _msthash="1817486" _msttexthash="32331" _mstvisible="7"]] #
272 )))|(% _mstvisible="4" style="width:51px" %)(% _mstvisible="5" %)
273 (((
274 (% _mstvisible="6" %)
275 [[Ext value>>||anchor="H2.4.6Extvalue" _msthash="1817487" _msttexthash="116545" _mstvisible="7"]]
276 )))
277
278 * The First 6 bytes: has fix meanings for every LHT65N.
279 * The 7th byte (EXT #): defines the external sensor model.
280 * 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.)
281
282
283 === 2.4.1 Decoder in TTN V3 ===
284
285
286 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.
287
288 Below is the position to put the decoder and LHT65N decoder can be download from here:
289
290
291 [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0 >>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0||_msthash="315253" _msttexthash="3509064" _mstvisible="2"]]
292
293
294 [[image:image-20220522234118-10.png||_mstalt="451464" _mstvisible="3" height="353" width="729"]]
295
296
297
298
299 === 2.4.2 BAT-Battery Info ===
300
301
302 These two bytes of BAT include the battery state and the actually voltage
303
304 [[image:image-20220523152839-18.png||_mstalt="457613" _mstvisible="3"]]
305
306
307 [[image:image-20220522235639-1.png||_mstalt="431392" _mstvisible="3" height="139" width="727"]]
308
309
310 Check the battery voltage for LHT65N.
311
312 * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
313 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
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 [[image:image-20220522235639-3.png||_mstalt="432120" _mstvisible="3"]]
324
325 * Temperature:  (0xF5C6-65536)/100=-26.18℃
326
327
328 === 2.4.4 Built-in Humidity ===
329
330
331 [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
332
333 * Humidity:    0x025C/10=60.4%
334
335
336 === 2.4.5 Ext # ===
337
338
339 Bytes for External Sensor:
340
341 [[image:image-20220523152822-17.png||_mstalt="454545" _mstvisible="3"]]
342
343
344
345 === 2.4.6 Ext value ===
346
347
348 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
349
350
351 [[image:image-20220522235639-5.png||_mstalt="432848" _mstvisible="3"]]
352
353
354 * DS18B20 temp=0x0ADD/100=27.81℃
355
356 The last 2 bytes of data are meaningless
357
358 [[image:image-20220522235639-6.png||_mstalt="433212" _mstvisible="3"]]
359
360
361 * External temperature= (0xF54F-65536)/100=-27.37℃
362
363 The last 2 bytes of data are meaningless
364
365 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
366
367
368
369 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
370
371
372 (((
373 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:
374 )))
375
376 (((
377
378 )))
379
380 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
381 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 96px;" %)(% _mstvisible="5" %)
382 (((
383 (% _mstvisible="6" %)
384 (% _msthash="1817488" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
385 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
386 (((
387 (% _mstvisible="6" %)
388 (% _msthash="1817489" _msttexthash="4550" _mstvisible="8" %)**2**
389 )))|=(% _mstvisible="4" style="width: 99px;" %)(% _mstvisible="5" %)
390 (((
391 (% _mstvisible="6" %)
392 (% _msthash="1817490" _msttexthash="4550" _mstvisible="8" %)**2**
393 )))|=(% _mstvisible="4" style="width: 132px;" %)(% _mstvisible="5" %)
394 (((
395 (% _mstvisible="6" %)
396 (% _msthash="1817491" _msttexthash="4550" _mstvisible="8" %)**2**
397 )))|=(% _mstvisible="4" style="width: 54px;" %)(% _mstvisible="5" %)
398 (((
399 (% _mstvisible="6" %)
400 (% _msthash="1817492" _msttexthash="4459" _mstvisible="8" %)**1**
401 )))|=(% _mstvisible="4" style="width: 64px;" %)(% _mstvisible="5" %)
402 (((
403 (% _mstvisible="6" %)
404 (% _msthash="1817493" _msttexthash="4732" _mstvisible="8" %)**4**
405 )))
406 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:96px" %)(% _mstvisible="5" %)
407 (((
408 (% _mstvisible="6" %)
409 (% _msthash="1817494" _msttexthash="60203" _mstvisible="8" %)**Value**
410 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
411 (((
412 (% _mstvisible="6" %)
413 [[External temperature>>||anchor="H4.2SetExternalSensorMode" _msthash="1817495" _msttexthash="426517" _mstvisible="7"]]
414 )))|(% _mstvisible="4" style="width:99px" %)(% _mstvisible="5" %)
415 (((
416 (% _mstvisible="6" %)
417 (((
418 (% _mstvisible="7" %)
419 [[Built-In>>||anchor="H2.4.3Built-inTemperature" _msthash="2224745" _msttexthash="100464" _mstvisible="8"]]
420 )))
421
422 (% _mstvisible="6" %)
423 (((
424 (% _mstvisible="7" %)
425 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224746" _msttexthash="184041" _mstvisible="8"]]
426 )))
427 )))|(% _mstvisible="4" style="width:132px" %)(% _mstvisible="5" %)
428 (((
429 (% _mstvisible="6" %)
430 (((
431 (% _msthash="2224747" _msttexthash="136331" _mstvisible="7" %)
432 BAT Status &
433 )))
434
435 (% _mstvisible="6" %)
436 (((
437 (% _mstvisible="7" %)
438 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224748" _msttexthash="311181" _mstvisible="8"]]
439 )))
440 )))|(% _mstvisible="4" style="width:54px" %)(% _mstvisible="5" %)
441 (((
442 (% _msthash="1817496" _msttexthash="147225" _mstvisible="6" %)
443 Status & Ext
444 )))|(% _mstvisible="4" style="width:64px" %)(% _mstvisible="5" %)
445 (((
446 (% _mstvisible="6" %)
447 (((
448 (% _mstvisible="7" %)
449 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2224749" _msttexthash="227175" _mstvisible="8"]]
450 )))
451 )))
452
453 (% _mstvisible="1" %)
454 * (% _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**
455
456 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:469px" %)
457 (% _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]
458 (% _mstvisible="3" %)|(% _msthash="1230921" _msttexthash="60203" _mstvisible="4" style="width:65px" %)Value|(% _mstvisible="4" style="width:267px" %)(% _mstvisible="5" %)
459 (((
460 (% _msthash="1817497" _msttexthash="128427" _mstvisible="6" %)
461 BAT Status
462
463 (% _msthash="1817498" _msttexthash="472784" _mstvisible="6" %)
464 00(b): Ultra Low ( BAT <= 2.50v)
465
466 (% _msthash="1817499" _msttexthash="483678" _mstvisible="6" %)
467 01(b): Low  (2.50v <=BAT <= 2.55v)
468
469 (% _msthash="1817500" _msttexthash="440791" _mstvisible="6" %)
470 10(b): OK   (2.55v <= BAT <=2.65v)
471
472 (% _msthash="1817501" _msttexthash="334191" _mstvisible="6" %)
473 11(b): Good   (BAT >= 2.65v)
474 )))|(% _mstvisible="4" style="width:134px" %)(% _mstvisible="5" %)
475 (((
476 (% _mstvisible="6" %)
477 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="1817502" _msttexthash="311181" _mstvisible="7"]]
478
479 (% _mstvisible="6" %)
480
481 )))
482
483 * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
484
485 (% border="1" cellspacing="8" style="background-color:#ffffcc; color:green; width:520px" %)
486 |(% 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]**
487 |(% 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)
488
489 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
490 * (% 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.
491 * (% 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)
492
493
494
495 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
496
497
498 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
499
500 be used to power the external ADC sensor; user can control the power on time for this
501
502 sensor by setting:
503
504 AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)**Time to power this sensor, from 0 ~~ 65535ms**
505
506 For example:
507
508 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
509
510
511 Or use **downlink command A2** to set the same.
512
513 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
514
515 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.
516
517 [[image:image-20220628150112-1.png||height="241" width="285"]]
518
519
520 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
521
522 [[image:image-20220628150714-4.png]]
523
524
525 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.
526
527
528 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
529
530 [[image:image-20220628151005-5.png]]
531
532
533 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
534
535 [[image:image-20220628151056-6.png]]
536
537
538 3) Within range
539
540 [[image:image-20220628151143-7.png]]
541
542
543
544 ==== 2.4.6.4 Ext~=2 TMP117 Sensor （since v1.3） ====
545
546 [[image:image-20220927095645-1.png||height="534" width="460"]]
547
548 **Ext=2,Temperature Sensor(TMP117)：**
549
550 [[image:image-20220906102307-7.png]]
551
552
553 (% style="color:blue" %)**Interrupt Mode and Counting Mode:**
554
555 The external cable NE2 can be use for MOD4 and MOD8
556
557
558
559
560 ==== 2.4.6.5 Ext~=4 Interrupt Mode （since v1.3） ====
561
562
563 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will send an uplink when there is a trigger.**
564
565
566 (% style="color:blue" %)**Interrupt Mode can be used to connect to external interrupt sensors such as:**
567
568 **Case 1: Door Sensor.** 3.3v Out for such sensor is just to detect Open/Close.
569
570 In Open State, the power consumption is the same as if there is no probe
571
572 In Close state, the power consumption will be 3uA higher than normal.
573
574 [[image:image-20220906100852-1.png||height="205" width="377"]]
575
576
577 Ext=4,Interrupt Sensor：
578
579 (% border="2" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:512px" %)
580 |(% style="width:117px" %)(((
581 AT+EXT=4,1
582 )))|(% style="width:371px" %)(((
583 Sent uplink packet in both rising and falling interrupt
584 )))
585 |(% style="width:117px" %)(((
586 AT+EXT=4,2
587 )))|(% style="width:371px" %)(((
588 Sent uplink packet only in falling interrupt
589 )))
590 |(% style="width:117px" %)(((
591 AT+EXT=4,3
592 )))|(% style="width:371px" %)(((
593 Sent uplink packet only in rising interrupt
594 )))
595
596 Trigger by falling edge:
597
598 [[image:image-20220906101145-2.png]]
599
600
601 Trigger by raising edge：
602
603 [[image:image-20220906101145-3.png]]
604
605
606
607
608 ==== 2.4.6.6 Ext~=8 Counting Mode（since v1.3） ====
609
610
611 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will count for every interrupt and uplink periodically.**
612
613
614 (% 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.
615
616 [[image:image-20220906101320-4.png||height="366" width="698"]]
617
618
619 (% 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
620
621 [[image:image-20220906101320-5.png||height="353" width="696"]]
622
623 Ext=8, Counting Sensor ( 4 bytes)：
624
625 (% border="2" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:381px" %)
626 |(% style="width:138px" %)(((
627 AT+EXT=8,0
628 )))|(% style="width:240px" %)(((
629 Count at falling interrupt
630 )))
631 |(% style="width:138px" %)(((
632 AT+EXT=8,1
633 )))|(% style="width:240px" %)(((
634 Count at rising interrupt
635 )))
636 |(% style="width:138px" %)(((
637 AT+SETCNT=60
638 )))|(% style="width:240px" %)(((
639 Sent current count to 60
640 )))
641
642 [[image:image-20220906101320-6.png]]
643
644
645 (% style="color:blue" %)**A2 downlink Command：**
646
647 A2 02:  Same as AT+EXT=2 (AT+EXT= second byte)
648
649 A2 06 01 F4:  Same as AT+EXT=6,500 (AT+EXT= second byte, third and fourth bytes)
650
651 A2 04 02:  Same as AT+EXT=4,2 (AT+EXT= second byte, third byte)
652
653 A2 08 01 00:  Same as AT+EXT=8,0 (AT+EXT= second byte, fourth byte)
654
655 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)
656
657
658 (% style="color:blue" %)**Modified ATWOOD command for external sensor TMP117 or DS18B20 temperature alarm.**
659
660
661 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
662
663 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
664
665 0): Cancel
666
667 1): Threshold alarm
668
669 2): Fluctuation alarm
670
671
672 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
673
674 (% 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.**
675
676
677 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
678
679 1):  If Alarm Mode is set to 1: Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
680
681 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
682
683
684 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.
685
686 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
687
688 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
689
690
691 (% style="color:blue" %)** Downlink:**
692
693 0xA5 00 ~-~- AT+WMOD=0.
694
695 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 )
696
697 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
698
699 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.
700
701
702
703
704 == 2.5 Show data on Datacake ==
705
706
707 (((
708 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:
709 )))
710
711 (((
712
713 )))
714
715 (((
716 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
717 )))
718
719 (((
720 (% 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.
721 )))
722
723 (((
724
725 )))
726
727 (((
728 Add Datacake:
729 )))
730
731
732 [[image:image-20220523000825-7.png||_mstalt="429884" _mstvisible="3" height="262" width="583"]]
733
734
735
736 Select default key as Access Key:
737
738
739 [[image:image-20220523000825-8.png||_mstalt="430248" _mstvisible="3" height="453" width="406"]]
740
741
742 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/||_mstvisible="2"]]) , add LHT65 device.
743
744
745 [[image:image-20220523000825-9.png||_mstalt="430612" _mstvisible="3" height="366" width="392"]]
746
747
748 [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
749
750
751
752 == 2.6 Datalog Feature ==
753
754
755 (((
756 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.
757 )))
758
759
760
761 === 2.6.1 Ways to get datalog via LoRaWAN ===
762
763
764 There are two methods:
765
766 1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specifying time range.
767 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.
768
769 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
770
771 [[image:image-20220703111700-2.png||height="381" width="1119"]]
772
773
774 === 2.6.2 Unix TimeStamp ===
775
776
777 LHT65N uses Unix TimeStamp format based on
778
779
780 [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
781
782
783
784 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
785
786 Below is the converter example
787
788 [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
789
790 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
791
792
793
794 === 2.6.3 Set Device Time ===
795
796
797 (((
798 There are two ways to set device's time:
799 )))
800
801 (((
802 **~1. Through LoRaWAN MAC Command (Default settings)**
803 )))
804
805 (((
806 User need to set SYNCMOD=1 to enable sync time via MAC command.
807 )))
808
809 (((
810 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).
811 )))
812
813 (((
814 (% 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.**
815 )))
816
817 (((
818
819 )))
820
821 (((
822 **2. Manually Set Time**
823 )))
824
825 (((
826 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
827 )))
828
829
830
831 === 2.6.4 Poll sensor value ===
832
833
834 User can poll sensor value based on timestamps from the server. Below is the downlink command.
835
836 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
837
838
839 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.
840
841 For example, downlink command **31 5FC5F350 5FC6 0160 05**
842
843 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
844
845 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
846
847
848
849 === 2.6.5 Datalog Uplink payload ===
850
851
852 (% _msthash="315267" _msttexthash="2245087" _mstvisible="1" %)
853 The Datalog poll reply uplink will use below payload format.
854
855 (% _mstvisible="1" %)
856 (((
857 (% _mstvisible="2" %)
858
859
860 (% _mstvisible="2" %)
861 (% _msthash="506080" _msttexthash="451581" _mstvisible="4" %)**Retrieval data payload**
862 )))
863
864 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
865 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 93px;" %)(% _mstvisible="5" %)
866 (((
867 (% _mstvisible="6" %)
868 (((
869 (% _mstvisible="7" %)
870 (% _msthash="2224750" _msttexthash="161122" _mstvisible="9" %)**Size(bytes)**
871 )))
872 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
873 (((
874 (% _mstvisible="6" %)
875 (((
876 (% _mstvisible="7" %)
877 (% _msthash="2224751" _msttexthash="4550" _mstvisible="9" %)**2**
878 )))
879 )))|=(% _mstvisible="4" style="width: 102px;" %)(% _mstvisible="5" %)
880 (((
881 (% _mstvisible="6" %)
882 (((
883 (% _mstvisible="7" %)
884 (% _msthash="2224752" _msttexthash="4550" _mstvisible="9" %)**2**
885 )))
886 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
887 (((
888 (% _mstvisible="6" %)
889 (((
890 (% _mstvisible="7" %)
891 (% _msthash="2224753" _msttexthash="4550" _mstvisible="9" %)**2**
892 )))
893 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
894 (((
895 (% _mstvisible="6" %)
896 (((
897 (% _mstvisible="7" %)
898 (% _msthash="2224754" _msttexthash="4459" _mstvisible="9" %)**1**
899 )))
900 )))|=(% _mstvisible="4" style="width: 48px;" %)(% _mstvisible="5" %)
901 (((
902 (% _mstvisible="6" %)
903 (((
904 (% _mstvisible="7" %)
905 (% _msthash="2224755" _msttexthash="4732" _mstvisible="9" %)**4**
906 )))
907 )))
908 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:93px" %)(% _mstvisible="5" %)
909 (((
910 (% _mstvisible="6" %)
911 (((
912 (% _mstvisible="7" %)
913 (% _msthash="2224756" _msttexthash="60203" _mstvisible="9" %)**Value**
914 )))
915 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
916 (((
917 (% _mstvisible="6" %)
918 (((
919 (% _mstvisible="7" %)
920 [[External sensor data>>||anchor="H2.4.6Extvalue" _msthash="2224757" _msttexthash="386672" _mstvisible="8"]]
921 )))
922 )))|(% _mstvisible="4" style="width:102px" %)(% _mstvisible="5" %)
923 (((
924 (% _mstvisible="6" %)
925 (((
926 (% _mstvisible="7" %)
927 (((
928 (% _mstvisible="8" %)
929 [[Built In>>||anchor="H2.4.3Built-inTemperature" _msthash="2671864" _msttexthash="91065" _mstvisible="9"]]
930 )))
931 )))
932
933 (% _mstvisible="6" %)
934 (((
935 (% _mstvisible="7" %)
936 (((
937 (% _mstvisible="8" %)
938 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2671865" _msttexthash="184041" _mstvisible="9"]]
939 )))
940 )))
941 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
942 (((
943 (% _mstvisible="6" %)
944 (((
945 (% _mstvisible="7" %)
946 (((
947 (% _mstvisible="8" %)
948 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2671866" _msttexthash="105872" _mstvisible="9"]]
949 )))
950 )))
951
952 (% _mstvisible="6" %)
953 (((
954 (% _mstvisible="7" %)
955 (((
956 (% _mstvisible="8" %)
957 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2671867" _msttexthash="117429" _mstvisible="9"]]
958 )))
959 )))
960 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
961 (((
962 (% _mstvisible="6" %)
963 (((
964 (% _msthash="2224758" _msttexthash="390390" _mstvisible="7" %)
965 Poll message flag & Ext
966 )))
967 )))|(% _mstvisible="4" style="width:48px" %)(% _mstvisible="5" %)
968 (((
969 (% _mstvisible="6" %)
970 (((
971 (% _mstvisible="7" %)
972 (((
973 (% _mstvisible="8" %)
974 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2671868" _msttexthash="227175" _mstvisible="9"]]
975 )))
976 )))
977
978 (% _mstvisible="6" %)
979 (((
980 (% _mstvisible="7" %)
981 (((
982 (% _mstvisible="8" %)
983
984 )))
985 )))
986 )))
987
988 (% _mstvisible="1" %)
989 (% _msthash="315268" _msttexthash="390390" _mstvisible="3" %)**Poll message flag & Ext**
990
991 (% _mstvisible="1" %)
992 [[image:image-20220523152208-14.png||_mstalt="452920" _mstvisible="3"]]
993
994 (% _mstvisible="1" %)
995 (((
996 (% _mstvisible="2" %)
997 (((
998 (% _msthash="736723" _msttexthash="2005003" _mstvisible="3" %)
999 (((
1000 Poll Message Flag: 1: This message is a poll message reply.
1001 )))
1002 )))
1003 )))
1004
1005 (% _mstvisible="1" %)
1006 * (% _mstvisible="3" %)
1007 (((
1008 (% _mstvisible="4" %)
1009 (((
1010 (% _msthash="1197157" _msttexthash="561548" _mstvisible="5" %)
1011 (((
1012 Poll Message Flag is set to 1.
1013 )))
1014 )))
1015 )))
1016 * (% _mstvisible="3" %)
1017 (((
1018 (% _mstvisible="4" %)
1019 (((
1020 (% _msthash="1197158" _msttexthash="9284964" _mstvisible="5" %)
1021 (((
1022 Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
1023 )))
1024 )))
1025 )))
1026
1027 (% _mstvisible="1" %)
1028 (((
1029 (% _mstvisible="2" %)
1030 (((
1031 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
1032 (((
1033
1034 )))
1035
1036 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
1037 (((
1038 For example, in US915 band, the max payload for different DR is:
1039 )))
1040 )))
1041 )))
1042
1043 (% _mstvisible="1" %)
1044 (((
1045 (% _mstvisible="2" %)
1046 (((
1047 (% _msthash="736725" _msttexthash="1065532" _mstvisible="3" %)
1048 (((
1049 a) DR0: max is 11 bytes so one entry of data
1050 )))
1051 )))
1052 )))
1053
1054 (% _mstvisible="1" %)
1055 (((
1056 (% _mstvisible="2" %)
1057 (((
1058 (% _msthash="736726" _msttexthash="3265665" _mstvisible="3" %)
1059 (((
1060 b) DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
1061 )))
1062 )))
1063 )))
1064
1065 (% _mstvisible="1" %)
1066 (((
1067 (% _mstvisible="2" %)
1068 (((
1069 (% _msthash="736727" _msttexthash="1454115" _mstvisible="3" style="text-align: left;" %)
1070 (((
1071 c) DR2: total payload includes 11 entries of data
1072 )))
1073 )))
1074 )))
1075
1076 (% _mstvisible="1" %)
1077 (((
1078 (% _mstvisible="2" %)
1079 (((
1080 (% _msthash="736728" _msttexthash="1483924" _mstvisible="3" style="text-align: left;" %)
1081 (((
1082 d) DR3: total payload includes 22 entries of data.
1083 )))
1084 )))
1085 )))
1086
1087 (% _mstvisible="1" %)
1088 (((
1089 (% _mstvisible="2" %)
1090 (((
1091 (% _msthash="736729" _msttexthash="5848349" _mstvisible="3" style="text-align: left;" %)
1092 (((
1093 If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0   
1094 )))
1095 )))
1096 )))
1097
1098
1099 (% _mstvisible="1" style="text-align: left;" %)
1100 (% _msthash="315269" _msttexthash="104767" _mstvisible="3" %)**Example:**
1101
1102 (% _msthash="315270" _msttexthash="913822" _mstvisible="1" style="text-align: left;" %)
1103 If LHT65N has below data inside Flash:
1104
1105 (% _mstvisible="1" %)
1106 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
1107
1108 (% _mstvisible="1" %)
1109 (((
1110 (% _msthash="506081" _msttexthash="1663961" _mstvisible="2" style="text-align: left;" %)
1111 If user sends below downlink command: (% _mstvisible="3" style="background-color:yellow" %)3160065F9760066DA705
1112 )))
1113
1114 (% _mstvisible="1" %)
1115 (((
1116 (% _msthash="506082" _msttexthash="1092494" _mstvisible="2" style="text-align: left;" %)
1117 Where : Start time: 60065F97 = time 21/1/19 04:27:03
1118 )))
1119
1120 (% _mstvisible="1" %)
1121 (((
1122 (% _msthash="506083" _msttexthash="737269" _mstvisible="2" style="text-align: left;" %)
1123 Stop time 60066DA7= time 21/1/19 05:27:(% _msthash="903005" _msttexthash="9672" _mstvisible="2" %)03
1124 )))
1125
1126 (% _mstvisible="1" %)
1127 (((
1128 (% _mstvisible="2" %)
1129
1130 )))
1131
1132 (% _mstvisible="1" %)
1133 (((
1134 (% _msthash="506084" _msttexthash="751218" _mstvisible="2" style="text-align: left;" %)
1135 LHT65N will uplink this payload.
1136 )))
1137
1138 (% _mstvisible="1" %)
1139 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
1140
1141 (% _msthash="315271" _msttexthash="12012546" _mstvisible="1" style="text-align: left;" %)
1142 (((
1143 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
1144 )))
1145
1146 (% _msthash="315237" _msttexthash="1385839" %)
1147 (((
1148 Where the first 11 bytes is for the first entry:
1149 )))
1150
1151 (% _msthash="315238" _msttexthash="274846" %)
1152 (((
1153 7FFF089801464160065F97
1154 )))
1155
1156 (% _msthash="315239" _msttexthash="617435" %)
1157 (((
1158 Ext sensor data=0x7FFF/100=327.67
1159 )))
1160
1161 (% _msthash="315240" _msttexthash="270543" %)
1162 (((
1163 Temp=0x0898/100=22.00
1164 )))
1165
1166 (% _msthash="315241" _msttexthash="211783" %)
1167 (((
1168 Hum=0x0146/10=32.6
1169 )))
1170
1171 (% _msthash="315242" _msttexthash="1569776" %)
1172 (((
1173 poll message flag & Ext=0x41,means reply data,Ext=1
1174 )))
1175
1176 (% _msthash="315243" _msttexthash="1120509" %)
1177 (((
1178 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
1179 )))
1180
1181
1182
1183 == 2.7 Alarm Mode ==
1184
1185
1186 (((
1187 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.
1188 )))
1189
1190 (((
1191 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
1192
1193
1194 )))
1195
1196 (((
1197 **AT COMMAND FOR ALARM MODE:**
1198 )))
1199
1200 (% _mstvisible="1" class="box infomessage" %)
1201 (((
1202 (((
1203 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled)
1204 )))
1205
1206 (((
1207 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1208 )))
1209
1210 (((
1211 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1212 )))
1213
1214 (((
1215 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
1216 )))
1217
1218 (((
1219 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1220 )))
1221 )))
1222
1223 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1224
1225 Total bytes: 8 bytes
1226
1227 **Example:**AA0100010001003C
1228
1229 WMOD=01
1230
1231 CITEMP=0001
1232
1233 TEMPlow=0001
1234
1235 TEMPhigh=003C
1236
1237
1238
1239 == 2.8 LED Indicator ==
1240
1241
1242 The LHT65 has a triple color LED which for easy showing different stage .
1243
1244 While user press ACT button, the LED will work as per LED status with ACT button.
1245
1246 In a normal working state:
1247
1248 * For each uplink, the BLUE LED or RED LED will blink once.
1249 BLUE LED when external sensor is connected.
1250 * RED LED when external sensor is not connected
1251 * For each success downlink, the PURPLE LED will blink once
1252
1253
1254
1255 == 2.9 installation ==
1256
1257
1258 (% _mstvisible="1" %)
1259 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
1260
1261
1262
1263 = 3. Sensors and Accessories =
1264
1265
1266 == 3.1 E2 Extension Cable ==
1267
1268
1269 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1270
1271
1272 **1m long breakout cable for LHT65N. Features:**
1273
1274 * (((
1275 Use for AT Command， works for both LHT52/LHT65N
1276 )))
1277 * (((
1278 Update firmware for LHT65N, works for both LHT52/LHT65N
1279 )))
1280 * (((
1281 Supports ADC mode to monitor external ADC
1282 )))
1283 * (((
1284 Supports Interrupt mode
1285 )))
1286 * (((
1287 Exposed All pins from the LHT65N Type-C connector.
1288
1289
1290
1291 )))
1292
1293 [[image:image-20220619092421-3.png||height="371" width="529"]]
1294
1295
1296
1297
1298 == 3.2 E3 Temperature Probe ==
1299
1300
1301 [[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"]]
1302
1303
1304 Temperature sensor with 2 meters cable long
1305
1306 * Resolution: 0.0625 °C
1307 * ±0.5°C accuracy from -10°C to +85°C
1308 * ±2°C accuracy from -55°C to +125°C
1309 * Operating Range: -40 ~~ 125 °C
1310 * Working voltage 2.35v ~~ 5v
1311
1312
1313 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1314
1315
1316 (((
1317 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1318 )))
1319
1320 * (((
1321 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1322 )))
1323
1324 * (((
1325 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1326 )))
1327
1328 (((
1329 There are two kinds of commands to configure LHT65N, they are:
1330 )))
1331
1332 * (((
1333 (% style="color:#4f81bd" %)**General Commands**.
1334 )))
1335
1336 (((
1337 These commands are to configure:
1338 )))
1339
1340 1. (((
1341 General system settings like: uplink interval.
1342 )))
1343 1. (((
1344 LoRaWAN protocol & radio-related commands.
1345 )))
1346
1347 (((
1348 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]]
1349 )))
1350
1351 * (((
1352 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1353 )))
1354
1355 (((
1356 These commands are only valid for LHT65N, as below:
1357 )))
1358
1359
1360
1361 == 4.1 Set Transmit Interval Time ==
1362
1363
1364 Feature: Change LoRaWAN End Node Transmit Interval.
1365
1366
1367 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1368
1369 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
1370
1371
1372 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1373
1374 Format: Command Code (0x01) followed by 3 bytes time value.
1375
1376 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1377
1378 * **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1379
1380 * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1381
1382
1383
1384 == 4.2 Set External Sensor Mode ==
1385
1386
1387 Feature: Change External Sensor Mode.
1388
1389
1390 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1391
1392 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1393
1394
1395 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1396
1397 Total bytes: 2 ~~ 5 bytes
1398
1399 **Example:**
1400
1401 * 0xA201: Set external sensor type to E1
1402
1403 * 0xA209: Same as AT+EXT=9
1404
1405 * 0xA20702003c: Same as AT+SETCNT=60
1406
1407
1408
1409 == 4.3 Enable/Disable uplink Temperature probe ID ==
1410
1411
1412 (((
1413 Feature: If PID is enabled, device will send the temperature probe ID on:
1414 )))
1415
1416 * (((
1417 First Packet after OTAA Join
1418 )))
1419 * (((
1420 Every 24 hours since the first packet.
1421 )))
1422
1423 (((
1424 PID is default set to disable (0)
1425
1426
1427 )))
1428
1429 (% style="color:#4f81bd" %)**AT Command:**
1430
1431 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1432
1433
1434 (% style="color:#4f81bd" %)**Downlink Command:**
1435
1436 * **0xA800**  **~-~->** AT+PID=0
1437 * **0xA801**     **~-~->** AT+PID=1
1438
1439
1440
1441 == 4.4 Set Password ==
1442
1443
1444 Feature: Set device password, max 9 digits
1445
1446
1447 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1448
1449 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1450
1451
1452 (% style="color:#4f81bd" %)**Downlink Command:**
1453
1454 No downlink command for this feature.
1455
1456
1457
1458 == 4.5 Quit AT Command ==
1459
1460
1461 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1462
1463
1464 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1465
1466 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1467
1468
1469 (% style="color:#4f81bd" %)**Downlink Command:**
1470
1471 No downlink command for this feature.
1472
1473
1474
1475 == 4.6 Set to sleep mode ==
1476
1477
1478 Feature: Set device to sleep mode
1479
1480 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1481 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1482
1483 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1484
1485 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1486
1487
1488 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1489
1490 * There is no downlink command to set to Sleep mode.
1491
1492
1493
1494 == 4.7 Set system time ==
1495
1496
1497 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1498
1499
1500 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1501
1502 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1503
1504
1505 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1506
1507 0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1508
1509
1510
1511 == 4.8 Set Time Sync Mode ==
1512
1513
1514 (((
1515 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1516 )))
1517
1518 (((
1519 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.
1520
1521
1522 )))
1523
1524 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1525
1526 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1527
1528
1529 (% style="color:#4f81bd" %)**Downlink Command:**
1530
1531 0x28 01 ~/~/ Same As AT+SYNCMOD=1
1532 0x28 00 ~/~/ Same As AT+SYNCMOD=0
1533
1534
1535
1536 == 4.9 Set Time Sync Interval ==
1537
1538
1539 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1540
1541
1542 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1543
1544 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1545
1546
1547 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1548
1549 **0x29 0A** ~/~/ Same as AT+SYNCTDC=0x0A
1550
1551
1552
1553 == 4.10 Print data entries base on page. ==
1554
1555
1556 Feature: Print the sector data from start page to stop page (max is 416 pages).
1557
1558
1559 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1560
1561 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1562
1563
1564 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1565
1566 No downlink commands for feature
1567
1568
1569
1570 == 4.11 Print last few data entries. ==
1571
1572
1573 Feature: Print the last few data entries
1574
1575
1576 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1577
1578 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1579
1580
1581 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1582
1583 No downlink commands for feature
1584
1585
1586
1587 == 4.12 Clear Flash Record ==
1588
1589
1590 Feature: Clear flash storage for data log feature.
1591
1592
1593 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1594
1595 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1596
1597
1598 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1599
1600 * Example: 0xA301 ~/~/Same as AT+CLRDTA
1601
1602
1603
1604 == 4.13 Auto Send None-ACK messages ==
1605
1606
1607 (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
1608 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.
1609
1610
1611 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1612
1613 (% _msthash="315396" _msttexthash="734682" _mstvisible="1" %)
1614 The default factory setting is 0
1615
1616 (% _mstvisible="1" border="1" style="background-color:#ffffcc; color:green; width:450px" %)
1617 (% _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**
1618 (% _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
1619
1620 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1621
1622 * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1623
1624
1625
1626 = 5. Battery & How to replace =
1627
1628
1629 == 5.1 Battery Type ==
1630
1631
1632 (((
1633 (((
1634 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.
1635 )))
1636 )))
1637
1638 (((
1639
1640 )))
1641
1642 (((
1643 (((
1644 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1645 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1646 )))
1647 )))
1648
1649 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1650
1651
1652
1653 == 5.2 Replace Battery ==
1654
1655
1656 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.
1657
1658 [[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"]]
1659
1660
1661 == 5.3 Battery Life Analyze ==
1662
1663
1664 (((
1665 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:
1666 [[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]]
1667 )))
1668
1669 (((
1670
1671 )))
1672
1673 (((
1674 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]]
1675 )))
1676
1677
1678
1679 = 6. FAQ =
1680
1681
1682 == 6.1 How to use AT Command? ==
1683
1684
1685 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.
1686
1687 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1688
1689
1690 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1691
1692 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1693 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1694 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1695 * (% style="background-color:yellow" %)**USB to TTL 3.3V <~-~-> D-**
1696
1697 (((
1698 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.
1699 )))
1700
1701
1702 Input password and ATZ to activate LHT65N,As shown below:
1703
1704 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1705
1706
1707 (% _msthash="506066" _msttexthash="544869" %)
1708 AT Command List is as below:
1709
1710 (% _msthash="506067" _msttexthash="361920" %)
1711 AT+<CMD>? :  Help on <CMD>
1712
1713 (% _msthash="506068" _msttexthash="243061" %)
1714 AT+<CMD> :  Run <CMD>
1715
1716 (% _msthash="506069" _msttexthash="704197" %)
1717 AT+<CMD>=<value> :  Set the value
1718
1719 (% _msthash="506070" _msttexthash="455676" %)
1720 AT+<CMD>=? :  Get the value
1721
1722 (% _msthash="506071" _msttexthash="670553" %)
1723 AT+DEBUG:  Set more info output
1724
1725 (% _msthash="506072" _msttexthash="485888" %)
1726 ATZ:  Trig a reset of the MCU
1727
1728 (% _msthash="506073" _msttexthash="2068872" %)
1729 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1730
1731 (% _msthash="506074" _msttexthash="689169" %)
1732 AT+DEUI:  Get or Set the Device EUI
1733
1734 (% _msthash="506075" _msttexthash="960414" %)
1735 AT+DADDR:  Get or Set the Device Address
1736
1737 (% _msthash="506076" _msttexthash="1079897" %)
1738 AT+APPKEY:  Get or Set the Application Key
1739
1740 (% _msthash="506077" _msttexthash="1326143" %)
1741 AT+NWKSKEY:  Get or Set the Network Session Key
1742
1743 (% _msthash="506078" _msttexthash="1573000" %)
1744 AT+APPSKEY:  Get or Set the Application Session Key
1745
1746 (% _msthash="506079" _msttexthash="1041729" %)
1747 AT+APPEUI:  Get or Set the Application EUI
1748
1749 (% _msthash="506080" _msttexthash="2104206" %)
1750 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1751
1752 (% _msthash="506081" _msttexthash="3369288" %)
1753 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1754
1755 (% _msthash="506082" _msttexthash="1894529" %)
1756 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1757
1758 (% _msthash="506083" _msttexthash="3864172" %)
1759 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1760
1761 (% _msthash="506084" _msttexthash="1712204" %)
1762 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1763
1764 (% _msthash="506085" _msttexthash="1281202" %)
1765 AT+RX2FQ:  Get or Set the Rx2 window frequency
1766
1767 (% _msthash="506086" _msttexthash="2796781" %)
1768 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1769
1770 (% _msthash="506087" _msttexthash="3285165" %)
1771 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1772
1773 (% _msthash="506088" _msttexthash="3286179" %)
1774 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1775
1776 (% _msthash="506089" _msttexthash="4703803" %)
1777 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1778
1779 (% _msthash="506090" _msttexthash="4704999" %)
1780 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1781
1782 (% _msthash="506091" _msttexthash="1528683" %)
1783 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1784
1785 (% _msthash="506092" _msttexthash="757185" %)
1786 AT+NWKID:  Get or Set the Network ID
1787
1788 (% _msthash="506093" _msttexthash="1156597" %)
1789 AT+FCU:  Get or Set the Frame Counter Uplink
1790
1791 (% _msthash="506094" _msttexthash="1273987" %)
1792 AT+FCD:  Get or Set the Frame Counter Downlink
1793
1794 (% _msthash="506095" _msttexthash="859222" %)
1795 AT+CLASS:  Get or Set the Device Class
1796
1797 (% _msthash="506096" _msttexthash="384852" %)
1798 AT+JOIN:  Join network
1799
1800 (% _msthash="506097" _msttexthash="548626" %)
1801 AT+NJS:  Get the join status
1802
1803 (% _msthash="506098" _msttexthash="2546206" %)
1804 AT+SENDB:  Send hexadecimal data along with the application port
1805
1806 (% _msthash="506099" _msttexthash="1932307" %)
1807 AT+SEND:  Send text data along with the application port
1808
1809 (% _msthash="506100" _msttexthash="3560557" %)
1810 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1811
1812 (% _msthash="506101" _msttexthash="1429701" %)
1813 AT+RECV:  Print last received data in raw format
1814
1815 (% _msthash="506102" _msttexthash="1735981" %)
1816 AT+VER:  Get current image version and Frequency Band
1817
1818 (% _msthash="506103" _msttexthash="1189474" %)
1819 AT+CFM:  Get or Set the confirmation mode (0-1)
1820
1821 (% _msthash="506104" _msttexthash="1718210" %)
1822 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1823
1824 (% _msthash="506105" _msttexthash="1339403" %)
1825 AT+SNR:  Get the SNR of the last received packet
1826
1827 (% _msthash="506106" _msttexthash="1452009" %)
1828 AT+RSSI:  Get the RSSI of the last received packet
1829
1830 (% _msthash="506107" _msttexthash="2768142" %)
1831 AT+TDC:  Get or set the application data transmission interval in ms
1832
1833 (% _msthash="506108" _msttexthash="1083914" %)
1834 AT+PORT:  Get or set the application port
1835
1836 (% _msthash="506109" _msttexthash="622440" %)
1837 AT+DISAT:  Disable AT commands
1838
1839 (% _msthash="506110" _msttexthash="868361" %)
1840 AT+PWORD: Set password, max 9 digits
1841
1842 (% _msthash="506111" _msttexthash="2210299" %)
1843 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1844
1845 (% _msthash="506112" _msttexthash="2113462" %)
1846 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1847
1848 (% _msthash="506113" _msttexthash="2087423" %)
1849 AT+PDTA:  Print the sector data from start page to stop page
1850
1851 (% _msthash="506114" _msttexthash="1063127" %)
1852 AT+PLDTA:  Print the last few sets of data
1853
1854 (% _msthash="506115" _msttexthash="1999426" %)
1855 AT+CLRDTA:  Clear the storage, record position back to 1st
1856
1857 (% _msthash="506116" _msttexthash="442130" %)
1858 AT+SLEEP:  Set sleep mode
1859
1860 (% _msthash="506117" _msttexthash="1080222" %)
1861 AT+EXT:  Get or Set external sensor model
1862
1863 (% _msthash="506118" _msttexthash="1309490" %)
1864 AT+BAT:  Get the current battery voltage in mV
1865
1866 (% _msthash="506119" _msttexthash="813891" %)
1867 AT+CFG:  Print all configurations
1868
1869 (% _msthash="506120" _msttexthash="551707" %)
1870 AT+WMOD:  Get or Set Work Mode
1871
1872 (% _msthash="506121" _msttexthash="2631499" %)
1873 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1874
1875 (% _msthash="506122" _msttexthash="3907150" %)
1876 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1877
1878 (% _msthash="506123" _msttexthash="854620" %)
1879 AT+SETCNT:  Set the count at present
1880
1881 (% _msthash="506124" _msttexthash="2554877" %)
1882 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1883
1884 (% _msthash="506125" _msttexthash="771849" %)
1885 AT+RPL:  Get or set response level
1886
1887 (% _msthash="506126" _msttexthash="1484314" %)
1888 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1889
1890 (% _msthash="506127" _msttexthash="741728" %)
1891 AT+LEAPSEC:  Get or Set Leap Second
1892
1893 (% _msthash="506128" _msttexthash="1694017" %)
1894 AT+SYNCMOD:  Get or Set time synchronization method
1895
1896 (% _msthash="506129" _msttexthash="2235948" %)
1897 AT+SYNCTDC:  Get or set time synchronization interval in day
1898
1899 (% _msthash="506130" _msttexthash="425542" %)
1900 AT+PID:  Get or set the PID
1901
1902
1903
1904 == 6.2 Where to use AT commands and Downlink commands ==
1905
1906
1907 **AT commands：**
1908
1909 [[image:image-20220620153708-1.png||height="603" width="723"]]
1910
1911
1912 **Downlink commands:**
1913
1914
1915
1916 (% style="color:blue" %)**TTN:**
1917
1918 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1919
1920
1921
1922 (% style="color:blue" %)**Helium：**
1923
1924 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1925
1926
1927
1928 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1929
1930
1931 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1932
1933
1934 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1935
1936
1937
1938 (% style="color:blue" %)**Aws:**
1939
1940 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1941
1942
1943
1944 == 6.3 How to change the uplink interval？ ==
1945
1946
1947 [[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"]]
1948
1949
1950
1951 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1952
1953
1954 [[image:image-20220615153355-1.png]]
1955
1956 [[image:1655802313617-381.png]]
1957
1958
1959 (((
1960 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.
1961 )))
1962
1963
1964 Input password and ATZ to activate LHT65N,As shown below:
1965
1966 [[image:image-20220615154519-3.png||height="672" width="807"]]
1967
1968
1969
1970 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1971
1972
1973 [[image:image-20220615153355-1.png]]
1974
1975
1976 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1977
1978 [[image:image-20220615170542-5.png]]
1979
1980
1981 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1982
1983 (% _msthash="506146" _msttexthash="52173160" %)
1984 First connect the four lines；(% style="display:none" %)
1985
1986 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1987
1988
1989 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1990
1991 [[image:image-20220621170938-2.png]]
1992
1993
1994 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1995
1996 [[image:image-20220615171334-6.png]]
1997
1998
1999 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
2000
2001
2002 When this interface appears, it indicates that the download has been completed.
2003
2004 [[image:image-20220620160723-8.png]]
2005
2006
2007 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
2008
2009
2010
2011 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
2012
2013
2014 [[image:image-20220623110706-1.png]]
2015
2016
2017 [[image:image-20220623112117-4.png||height="459" width="343"]]
2018
2019
2020 (((
2021 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.
2022 )))
2023
2024
2025 Input password and ATZ to activate LHT65N,As shown below:
2026
2027 [[image:image-20220615154519-3.png||height="672" width="807"]]
2028
2029
2030
2031 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
2032
2033
2034 [[image:image-20220623110706-1.png]]
2035
2036
2037 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
2038
2039 [[image:image-20220615170542-5.png]]
2040
2041
2042 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
2043
2044 (% _msthash="506146" _msttexthash="52173160" %)
2045 First connect the four lines；
2046
2047 (% _msthash="506146" _msttexthash="52173160" %)
2048 [[image:image-20220623113959-5.png||height="528" width="397"]]
2049
2050 (% _msthash="506146" _msttexthash="52173160" %)
2051 Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
2052
2053
2054 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
2055
2056 [[image:image-20220615171334-6.png]]
2057
2058
2059 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
2060
2061
2062 When this interface appears, it indicates that the download has been completed.
2063
2064 [[image:image-20220620160723-8.png]]
2065
2066
2067 Finally,restart reset device again
2068
2069
2070
2071 = 7. Order Info =
2072
2073
2074 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
2075
2076 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
2077
2078 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
2079 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
2080 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
2081 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
2082 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
2083 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
2084 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
2085 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
2086
2087 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
2088
2089 * (% style="color:red" %)**E3**(%%): External Temperature Probe
2090
2091
2092
2093 = 8. Packing Info =
2094
2095
2096 **Package Includes**:
2097
2098 * LHT65N Temperature & Humidity Sensor x 1
2099 * Optional external sensor
2100
2101 **Dimension and weight**:
2102
2103 * Device Size:  10 x 10 x 3.5 cm
2104 * Device Weight: 120.5g
2105
2106
2107
2108 = 9. Reference material =
2109
2110
2111 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
2112
2113
2114
2115 = 10. FCC Warning =
2116
2117
2118 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
2119
2120 (1) This device may not cause harmful interference；
2121
2122 (2) this device must accept any interference received, including interference that may cause undesired operation.
2123
2124
2125
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