Version 206.1 by Edwin Chen on 2022/10/18 09:46
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9 (% _msthash="315238" _msttexthash="18964465" _mstvisible="3" %)**Table of Contents：**
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11 {{toc/}}
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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? ==
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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"]]
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127 [[image:image-20220525110604-2.png||_mstalt="427531" _mstvisible="3"]]
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129
130
131 == 2.3 Example to join LoRaWAN network ==
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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.
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138 (% _mstvisible="1" class="wikigeneratedid" %)
139 [[image:image-20220522232442-1.png||_mstalt="427830" _mstvisible="3" height="387" width="648"]]
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141
142 (((
143 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:
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145
146
147
148 === 2.3.1 Step 1: Create Device n TTN ===
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150
151 (((
152 Create a device in TTN V3 with the OTAA keys from LHT65N.
153 )))
154
155 (((
156 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
157 )))
158
159 [[image:image-20220617150003-1.jpeg]]
160
161 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
162
163 Add APP EUI in the application.
164
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166 [[image:image-20220522232916-3.png||_mstalt="430495" _mstvisible="3"]]
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169 [[image:image-20220522232932-4.png||_mstalt="430157" _mstvisible="3"]]
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172 [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
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176 (% style="color:red" %)**Note: LHT65N use same payload as LHT65.**
177
178
179 [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
180
181
182 Input APP EUI,  APP KEY and DEV EUI:
183
184
185 [[image:image-20220522233118-7.png||_mstalt="430430" _mstvisible="3"]]
186
187
188
189
190 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
191
192
193 (((
194 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.
195 )))
196
197 [[image:image-20220522233300-8.png||_mstalt="428389" _mstvisible="3" height="219" width="722"]]
198
199
200
201
202 == 2.4 Uplink Payload   ( Fport~=2) ==
203
204
205 (((
206 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.
207 )))
208
209 (((
210 After each uplink, the (% _mstvisible="3" style="color:blue" %)**BLUE LED**(%%) will blink once.
211 )))
212
213 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:426px" %)
214 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 97px;" %)(% _mstvisible="5" %)
215 (((
216 (% _mstvisible="6" %)
217 (% _msthash="1817478" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
218 )))|=(% _mstvisible="4" style="width: 39px;" %)(% _mstvisible="5" %)
219 (((
220 (% _mstvisible="6" %)
221 (% _msthash="1817479" _msttexthash="4550" _mstvisible="8" %)**2**
222 )))|=(% _mstvisible="4" style="width: 100px;" %)(% _mstvisible="5" %)
223 (((
224 (% _mstvisible="6" %)
225 (% _msthash="1817480" _msttexthash="4550" _mstvisible="8" %)**2**
226 )))|=(% _mstvisible="4" style="width: 77px;" %)(% _mstvisible="5" %)
227 (((
228 (% _mstvisible="6" %)
229 (% _msthash="1817481" _msttexthash="4550" _mstvisible="8" %)**2**
230 )))|=(% _mstvisible="4" style="width: 47px;" %)(% _mstvisible="5" %)
231 (((
232 (% _mstvisible="6" %)
233 (% _msthash="1817482" _msttexthash="4459" _mstvisible="8" %)**1**
234 )))|=(% _mstvisible="4" style="width: 51px;" %)(% _mstvisible="5" %)
235 (((
236 (% _mstvisible="6" %)
237 (% _msthash="1817483" _msttexthash="4732" _mstvisible="8" %)**4**
238 )))
239 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:97px" %)(% _mstvisible="5" %)
240 (((
241 (% _mstvisible="6" %)
242 (% _msthash="1817484" _msttexthash="60203" _mstvisible="8" %)**Value**
243 )))|(% _mstvisible="4" style="width:39px" %)(% _mstvisible="5" %)
244 (((
245 (% _mstvisible="6" %)
246 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo" _msthash="1817485" _msttexthash="22594" _mstvisible="7"]]
247 )))|(% _mstvisible="4" style="width:100px" %)(% _mstvisible="5" %)
248 (((
249 (% _mstvisible="6" %)
250 (((
251 (% _mstvisible="7" %)
252 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224742" _msttexthash="405769" _mstvisible="8"]]
253 )))
254 )))|(% _mstvisible="4" style="width:77px" %)(% _mstvisible="5" %)
255 (((
256 (% _mstvisible="6" %)
257 (((
258 (% _mstvisible="7" %)
259 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2224743" _msttexthash="105872" _mstvisible="8"]]
260 )))
261
262 (% _mstvisible="6" %)
263 (((
264 (% _mstvisible="7" %)
265 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224744" _msttexthash="117429" _mstvisible="8"]]
266 )))
267 )))|(% _mstvisible="4" style="width:47px" %)(% _mstvisible="5" %)
268 (((
269 (% _mstvisible="6" %)
270 [[Ext>>||anchor="H2.4.5Ext23" _msthash="1817486" _msttexthash="32331" _mstvisible="7"]] #
271 )))|(% _mstvisible="4" style="width:51px" %)(% _mstvisible="5" %)
272 (((
273 (% _mstvisible="6" %)
274 [[Ext value>>||anchor="H2.4.6Extvalue" _msthash="1817487" _msttexthash="116545" _mstvisible="7"]]
275 )))
276
277 * The First 6 bytes: has fix meanings for every LHT65N.
278 * The 7th byte (EXT #): defines the external sensor model.
279 * 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.)
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: [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
288
289
290 [[image:image-20220522234118-10.png||_mstalt="451464" _mstvisible="3" height="353" width="729"]]
291
292
293
294
295 === 2.4.2 BAT-Battery Info ===
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297
298 These two bytes of BAT include the battery state and the actually voltage
299
300 [[image:image-20220523152839-18.png||_mstalt="457613" _mstvisible="3"]]
301
302
303 [[image:image-20220522235639-1.png||_mstalt="431392" _mstvisible="3" height="139" width="727"]]
304
305
306 Check the battery voltage for LHT65N.
307
308 * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
309 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
310
311
312 === 2.4.3 Built-in Temperature ===
313
314
315 [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
316
317 * Temperature:  0x0ABB/100=27.47℃
318
319 [[image:image-20220522235639-3.png||_mstalt="432120" _mstvisible="3"]]
320
321 * Temperature:  (0xF5C6-65536)/100=-26.18℃
322
323 === 2.4.4 Built-in Humidity ===
324
325
326 [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
327
328 * Humidity:    0x025C/10=60.4%
329
330
331 === 2.4.5 Ext # ===
332
333
334 Bytes for External Sensor:
335
336 [[image:image-20220523152822-17.png||_mstalt="454545" _mstvisible="3"]]
337
338
339
340 === 2.4.6 Ext value ===
341
342
343 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
344
345
346 [[image:image-20220522235639-5.png||_mstalt="432848" _mstvisible="3"]]
347
348
349 * DS18B20 temp=0x0ADD/100=27.81℃
350
351 The last 2 bytes of data are meaningless
352
353 [[image:image-20220522235639-6.png||_mstalt="433212" _mstvisible="3"]]
354
355
356 * External temperature= (0xF54F-65536)/100=-27.37℃
357
358 The last 2 bytes of data are meaningless
359
360 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
361
362
363
364 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
365
366
367 (((
368 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:
369 )))
370
371 (((
372
373 )))
374
375 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
376 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 96px;" %)(% _mstvisible="5" %)
377 (((
378 (% _mstvisible="6" %)
379 (% _msthash="1817488" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
380 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
381 (((
382 (% _mstvisible="6" %)
383 (% _msthash="1817489" _msttexthash="4550" _mstvisible="8" %)**2**
384 )))|=(% _mstvisible="4" style="width: 99px;" %)(% _mstvisible="5" %)
385 (((
386 (% _mstvisible="6" %)
387 (% _msthash="1817490" _msttexthash="4550" _mstvisible="8" %)**2**
388 )))|=(% _mstvisible="4" style="width: 132px;" %)(% _mstvisible="5" %)
389 (((
390 (% _mstvisible="6" %)
391 (% _msthash="1817491" _msttexthash="4550" _mstvisible="8" %)**2**
392 )))|=(% _mstvisible="4" style="width: 54px;" %)(% _mstvisible="5" %)
393 (((
394 (% _mstvisible="6" %)
395 (% _msthash="1817492" _msttexthash="4459" _mstvisible="8" %)**1**
396 )))|=(% _mstvisible="4" style="width: 64px;" %)(% _mstvisible="5" %)
397 (((
398 (% _mstvisible="6" %)
399 (% _msthash="1817493" _msttexthash="4732" _mstvisible="8" %)**4**
400 )))
401 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:96px" %)(% _mstvisible="5" %)
402 (((
403 (% _mstvisible="6" %)
404 (% _msthash="1817494" _msttexthash="60203" _mstvisible="8" %)**Value**
405 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
406 (((
407 (% _mstvisible="6" %)
408 [[External temperature>>||anchor="H4.2SetExternalSensorMode" _msthash="1817495" _msttexthash="426517" _mstvisible="7"]]
409 )))|(% _mstvisible="4" style="width:99px" %)(% _mstvisible="5" %)
410 (((
411 (% _mstvisible="6" %)
412 (((
413 (% _mstvisible="7" %)
414 [[Built-In>>||anchor="H2.4.3Built-inTemperature" _msthash="2224745" _msttexthash="100464" _mstvisible="8"]]
415 )))
416
417 (% _mstvisible="6" %)
418 (((
419 (% _mstvisible="7" %)
420 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224746" _msttexthash="184041" _mstvisible="8"]]
421 )))
422 )))|(% _mstvisible="4" style="width:132px" %)(% _mstvisible="5" %)
423 (((
424 (% _mstvisible="6" %)
425 (((
426 (% _msthash="2224747" _msttexthash="136331" _mstvisible="7" %)
427 BAT Status &
428 )))
429
430 (% _mstvisible="6" %)
431 (((
432 (% _mstvisible="7" %)
433 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224748" _msttexthash="311181" _mstvisible="8"]]
434 )))
435 )))|(% _mstvisible="4" style="width:54px" %)(% _mstvisible="5" %)
436 (((
437 (% _msthash="1817496" _msttexthash="147225" _mstvisible="6" %)
438 Status & Ext
439 )))|(% _mstvisible="4" style="width:64px" %)(% _mstvisible="5" %)
440 (((
441 (% _mstvisible="6" %)
442 (((
443 (% _mstvisible="7" %)
444 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2224749" _msttexthash="227175" _mstvisible="8"]]
445 )))
446 )))
447
448 (% _mstvisible="1" %)
449 * (% _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**
450
451 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:469px" %)
452 (% _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]
453 (% _mstvisible="3" %)|(% _msthash="1230921" _msttexthash="60203" _mstvisible="4" style="width:65px" %)Value|(% _mstvisible="4" style="width:267px" %)(% _mstvisible="5" %)
454 (((
455 (% _msthash="1817497" _msttexthash="128427" _mstvisible="6" %)
456 BAT Status
457
458 (% _msthash="1817498" _msttexthash="472784" _mstvisible="6" %)
459 00(b): Ultra Low ( BAT <= 2.50v)
460
461 (% _msthash="1817499" _msttexthash="483678" _mstvisible="6" %)
462 01(b): Low  (2.50v <=BAT <= 2.55v)
463
464 (% _msthash="1817500" _msttexthash="440791" _mstvisible="6" %)
465 10(b): OK   (2.55v <= BAT <=2.65v)
466
467 (% _msthash="1817501" _msttexthash="334191" _mstvisible="6" %)
468 11(b): Good   (BAT >= 2.65v)
469 )))|(% _mstvisible="4" style="width:134px" %)(% _mstvisible="5" %)
470 (((
471 (% _mstvisible="6" %)
472 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="1817502" _msttexthash="311181" _mstvisible="7"]]
473
474 (% _mstvisible="6" %)
475
476 )))
477
478 * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
479
480 (% border="1" cellspacing="8" style="background-color:#ffffcc; color:green; width:520px" %)
481 |(% 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]**
482 |(% 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)
483
484 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
485 * (% 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.
486 * (% 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)
487
488
489
490 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
491
492
493 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
494
495 be used to power the external ADC sensor; user can control the power on time for this
496
497 sensor by setting:
498
499 AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)**Time to power this sensor, from 0 ~~ 65535ms**
500
501 For example:
502
503 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
504
505
506 Or use **downlink command A2** to set the same.
507
508 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
509
510 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.
511
512 [[image:image-20220628150112-1.png||height="241" width="285"]]
513
514
515 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
516
517 [[image:image-20220628150714-4.png]]
518
519
520 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.
521
522
523 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
524
525 [[image:image-20220628151005-5.png]]
526
527
528 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
529
530 [[image:image-20220628151056-6.png]]
531
532
533 3) Within range
534
535 [[image:image-20220628151143-7.png]]
536
537
538
539 ==== 2.4.6.4 Ext~=2 TMP117 Sensor （Since Firmware v1.3） ====
540
541
542 [[image:image-20220927095645-1.png||height="534" width="460"]]
543
544
545 **Ext=2,Temperature Sensor(TMP117)：**
546
547 [[image:image-20220906102307-7.png]]
548
549
550 (% style="color:blue" %)**Interrupt Mode and Counting Mode:**
551
552 The external cable NE2 can be use for MOD4 and MOD8
553
554
555
556
557 ==== 2.4.6.5 Ext~=4 Interrupt Mode （Since Firmware v1.3） ====
558
559
560 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will send an uplink when there is a trigger.**
561
562
563 (% style="color:blue" %)**Interrupt Mode can be used to connect to external interrupt sensors such as:**
564
565 **Case 1: Door Sensor.** 3.3v Out for such sensor is just to detect Open/Close.
566
567 In Open State, the power consumption is the same as if there is no probe
568
569 In Close state, the power consumption will be 3uA higher than normal.
570
571 [[image:image-20220906100852-1.png||height="205" width="377"]]
572
573
574 Ext=4,Interrupt Sensor：
575
576 (% border="2" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:512px" %)
577 |(% style="width:117px" %)(((
578 AT+EXT=4,1
579 )))|(% style="width:371px" %)(((
580 Sent uplink packet in both rising and falling interrupt
581 )))
582 |(% style="width:117px" %)(((
583 AT+EXT=4,2
584 )))|(% style="width:371px" %)(((
585 Sent uplink packet only in falling interrupt
586 )))
587 |(% style="width:117px" %)(((
588 AT+EXT=4,3
589 )))|(% style="width:371px" %)(((
590 Sent uplink packet only in rising interrupt
591 )))
592
593 Trigger by falling edge:
594
595 [[image:image-20220906101145-2.png]]
596
597
598 Trigger by raising edge：
599
600 [[image:image-20220906101145-3.png]]
601
602
603
604
605 ==== 2.4.6.6 Ext~=8 Counting Mode（Since Firmware v1.3） ====
606
607
608 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will count for every interrupt and uplink periodically.**
609
610
611 (% 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.
612
613 [[image:image-20220906101320-4.png||height="366" width="698"]]
614
615
616 (% 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
617
618 [[image:image-20220906101320-5.png||height="353" width="696"]]
619
620 Ext=8, Counting Sensor ( 4 bytes)：
621
622 (% border="2" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:381px" %)
623 |(% style="width:138px" %)(((
624 AT+EXT=8,0
625 )))|(% style="width:240px" %)(((
626 Count at falling interrupt
627 )))
628 |(% style="width:138px" %)(((
629 AT+EXT=8,1
630 )))|(% style="width:240px" %)(((
631 Count at rising interrupt
632 )))
633 |(% style="width:138px" %)(((
634 AT+SETCNT=60
635 )))|(% style="width:240px" %)(((
636 Sent current count to 60
637 )))
638
639 [[image:image-20220906101320-6.png]]
640
641
642 (% style="color:blue" %)**A2 downlink Command：**
643
644 A2 02:  Same as AT+EXT=2 (AT+EXT= second byte)
645
646 A2 06 01 F4:  Same as AT+EXT=6,500 (AT+EXT= second byte, third and fourth bytes)
647
648 A2 04 02:  Same as AT+EXT=4,2 (AT+EXT= second byte, third byte)
649
650 A2 08 01 00:  Same as AT+EXT=8,0 (AT+EXT= second byte, fourth byte)
651
652 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)
653
654
655 (% style="color:blue" %)**Modified ATWOOD command for external sensor TMP117 or DS18B20 temperature alarm.**
656
657
658 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
659
660 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
661
662 0): Cancel
663
664 1): Threshold alarm
665
666 2): Fluctuation alarm
667
668
669 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
670
671 (% 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.**
672
673
674 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
675
676 1):  If Alarm Mode is set to 1: Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
677
678 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
679
680
681 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.
682
683 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
684
685 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
686
687
688 (% style="color:blue" %)** Downlink:**
689
690 0xA5 00 ~-~- AT+WMOD=0.
691
692 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 )
693
694 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
695
696 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.
697
698
699
700
701 == 2.5 Show data on Datacake ==
702
703
704 (((
705 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:
706 )))
707
708 (((
709
710 )))
711
712 (((
713 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
714 )))
715
716 (((
717 (% 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.
718 )))
719
720 (((
721
722 )))
723
724 (((
725 Add Datacake:
726 )))
727
728
729 [[image:image-20220523000825-7.png||_mstalt="429884" _mstvisible="3" height="262" width="583"]]
730
731
732
733 Select default key as Access Key:
734
735
736 [[image:image-20220523000825-8.png||_mstalt="430248" _mstvisible="3" height="453" width="406"]]
737
738
739 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/||_mstvisible="2"]]) , add LHT65 device.
740
741
742 [[image:image-20220523000825-9.png||_mstalt="430612" _mstvisible="3" height="366" width="392"]]
743
744
745 [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
746
747
748
749 == 2.6 Datalog Feature ==
750
751
752 (((
753 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.
754 )))
755
756
757
758 === 2.6.1 Ways to get datalog via LoRaWAN ===
759
760
761 There are two methods:
762
763 **Method 1**: IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specified time range.
764
765
766 **Method 2: **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 messages and store the sensor data, and it will send all messages (10s interval) after the network recovery.
767
768 **Note for method 2:**
769
770 * a) LHT65N will do an ACK check for data records sending to make sure every data arrive server.
771 * b) LHT65N will send data in **CONFIRMED Mode** when PNACKMD=1, but LHT65N won't re-transmit the packet if it doesn't get ACK, it will just mark it as a NONE-ACK message. In a future uplink if LHT65N gets a ACK, LHT65N will consider there is a network connection and resend all NONE-ACK Message.
772
773 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
774
775
776 [[image:image-20220703111700-2.png||height="381" width="1119"]]
777
778
779 === 2.6.2 Unix TimeStamp ===
780
781
782 LHT65N uses Unix TimeStamp format based on
783
784
785 [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
786
787
788
789 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
790
791 Below is the converter example
792
793 [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
794
795 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
796
797
798
799 === 2.6.3 Set Device Time ===
800
801
802 (((
803 There are two ways to set device's time:
804 )))
805
806 (((
807 **~1. Through LoRaWAN MAC Command (Default settings)**
808 )))
809
810 (((
811 User need to set SYNCMOD=1 to enable sync time via MAC command.
812 )))
813
814 (((
815 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).
816 )))
817
818 (((
819 (% 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.**
820 )))
821
822 (((
823
824 )))
825
826 (((
827 **2. Manually Set Time**
828 )))
829
830 (((
831 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
832 )))
833
834
835
836 === 2.6.4 Poll sensor value ===
837
838
839 User can poll sensor value based on timestamps from the server. Below is the downlink command.
840
841 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
842
843
844 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.
845
846 For example, downlink command **31 5FC5F350 5FC6 0160 05**
847
848 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
849
850 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
851
852
853
854 === 2.6.5 Datalog Uplink payload ===
855
856
857 (% _msthash="315267" _msttexthash="2245087" _mstvisible="1" %)
858 The Datalog poll reply uplink will use below payload format.
859
860 (% _mstvisible="1" %)
861 (((
862 (% _mstvisible="2" %)
863
864
865 (% _mstvisible="2" %)
866 (% _msthash="506080" _msttexthash="451581" _mstvisible="4" %)**Retrieval data payload**
867 )))
868
869 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
870 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 93px;" %)(% _mstvisible="5" %)
871 (((
872 (% _mstvisible="6" %)
873 (((
874 (% _mstvisible="7" %)
875 (% _msthash="2224750" _msttexthash="161122" _mstvisible="9" %)**Size(bytes)**
876 )))
877 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
878 (((
879 (% _mstvisible="6" %)
880 (((
881 (% _mstvisible="7" %)
882 (% _msthash="2224751" _msttexthash="4550" _mstvisible="9" %)**2**
883 )))
884 )))|=(% _mstvisible="4" style="width: 102px;" %)(% _mstvisible="5" %)
885 (((
886 (% _mstvisible="6" %)
887 (((
888 (% _mstvisible="7" %)
889 (% _msthash="2224752" _msttexthash="4550" _mstvisible="9" %)**2**
890 )))
891 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
892 (((
893 (% _mstvisible="6" %)
894 (((
895 (% _mstvisible="7" %)
896 (% _msthash="2224753" _msttexthash="4550" _mstvisible="9" %)**2**
897 )))
898 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
899 (((
900 (% _mstvisible="6" %)
901 (((
902 (% _mstvisible="7" %)
903 (% _msthash="2224754" _msttexthash="4459" _mstvisible="9" %)**1**
904 )))
905 )))|=(% _mstvisible="4" style="width: 48px;" %)(% _mstvisible="5" %)
906 (((
907 (% _mstvisible="6" %)
908 (((
909 (% _mstvisible="7" %)
910 (% _msthash="2224755" _msttexthash="4732" _mstvisible="9" %)**4**
911 )))
912 )))
913 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:93px" %)(% _mstvisible="5" %)
914 (((
915 (% _mstvisible="6" %)
916 (((
917 (% _mstvisible="7" %)
918 (% _msthash="2224756" _msttexthash="60203" _mstvisible="9" %)**Value**
919 )))
920 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
921 (((
922 (% _mstvisible="6" %)
923 (((
924 (% _mstvisible="7" %)
925 [[External sensor data>>||anchor="H2.4.6Extvalue" _msthash="2224757" _msttexthash="386672" _mstvisible="8"]]
926 )))
927 )))|(% _mstvisible="4" style="width:102px" %)(% _mstvisible="5" %)
928 (((
929 (% _mstvisible="6" %)
930 (((
931 (% _mstvisible="7" %)
932 (((
933 (% _mstvisible="8" %)
934 [[Built In>>||anchor="H2.4.3Built-inTemperature" _msthash="2671864" _msttexthash="91065" _mstvisible="9"]]
935 )))
936 )))
937
938 (% _mstvisible="6" %)
939 (((
940 (% _mstvisible="7" %)
941 (((
942 (% _mstvisible="8" %)
943 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2671865" _msttexthash="184041" _mstvisible="9"]]
944 )))
945 )))
946 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
947 (((
948 (% _mstvisible="6" %)
949 (((
950 (% _mstvisible="7" %)
951 (((
952 (% _mstvisible="8" %)
953 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2671866" _msttexthash="105872" _mstvisible="9"]]
954 )))
955 )))
956
957 (% _mstvisible="6" %)
958 (((
959 (% _mstvisible="7" %)
960 (((
961 (% _mstvisible="8" %)
962 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2671867" _msttexthash="117429" _mstvisible="9"]]
963 )))
964 )))
965 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
966 (((
967 (% _mstvisible="6" %)
968 (((
969 (% _msthash="2224758" _msttexthash="390390" _mstvisible="7" %)
970 Poll message flag & Ext
971 )))
972 )))|(% _mstvisible="4" style="width:48px" %)(% _mstvisible="5" %)
973 (((
974 (% _mstvisible="6" %)
975 (((
976 (% _mstvisible="7" %)
977 (((
978 (% _mstvisible="8" %)
979 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2671868" _msttexthash="227175" _mstvisible="9"]]
980 )))
981 )))
982
983 (% _mstvisible="6" %)
984 (((
985 (% _mstvisible="7" %)
986 (((
987 (% _mstvisible="8" %)
988
989 )))
990 )))
991 )))
992
993 (% _mstvisible="1" %)
994 (% _msthash="315268" _msttexthash="390390" _mstvisible="3" %)**Poll message flag & Ext**
995
996 (% _mstvisible="1" %)
997 (((
998 (% _mstvisible="2" %)
999 (((
1000 (% _msthash="736723" _msttexthash="2005003" _mstvisible="3" %)
1001 (((
1002 [[image:image-20221006192726-1.png||height="112" width="754"]]
1003
1004 (% class="mark" %)**No ACK Message**(%%): 1: This message means this payload is fromn Uplink Message which doesn't get ACK from the server before ( for [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]] feature)
1005
1006 (% class="mark" %)**Poll Message Flag**(%%): 1: This message is a poll message reply.
1007
1008
1009 )))
1010 )))
1011 )))
1012
1013 (% _mstvisible="1" %)
1014 * (% _mstvisible="3" %)
1015 (((
1016 (% _mstvisible="4" %)
1017 (((
1018 (% _msthash="1197157" _msttexthash="561548" _mstvisible="5" %)
1019 (((
1020 Poll Message Flag is set to 1.
1021 )))
1022 )))
1023 )))
1024 * (% _mstvisible="3" %)
1025 (((
1026 (% _mstvisible="4" %)
1027 (((
1028 (% _msthash="1197158" _msttexthash="9284964" _mstvisible="5" %)
1029 (((
1030 Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
1031 )))
1032 )))
1033 )))
1034
1035 (% _mstvisible="1" %)
1036 (((
1037 (% _mstvisible="2" %)
1038 (((
1039 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
1040 (((
1041
1042 )))
1043
1044 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
1045 (((
1046 For example, in US915 band, the max payload for different DR is:
1047 )))
1048 )))
1049 )))
1050
1051 (% _mstvisible="1" %)
1052 (((
1053 (% _mstvisible="2" %)
1054 (((
1055 (% _msthash="736725" _msttexthash="1065532" _mstvisible="3" %)
1056 (((
1057 **a) DR0:** max is 11 bytes so one entry of data
1058 )))
1059 )))
1060 )))
1061
1062 (% _mstvisible="1" %)
1063 (((
1064 (% _mstvisible="2" %)
1065 (((
1066 (% _msthash="736726" _msttexthash="3265665" _mstvisible="3" %)
1067 (((
1068 **b) DR1:** max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
1069 )))
1070 )))
1071 )))
1072
1073 (% _mstvisible="1" %)
1074 (((
1075 (% _mstvisible="2" %)
1076 (((
1077 (% _msthash="736727" _msttexthash="1454115" _mstvisible="3" style="text-align: left;" %)
1078 (((
1079 **c) DR2:** total payload includes 11 entries of data
1080 )))
1081 )))
1082 )))
1083
1084 (% _mstvisible="1" %)
1085 (((
1086 (% _mstvisible="2" %)
1087 (((
1088 (% _msthash="736728" _msttexthash="1483924" _mstvisible="3" style="text-align: left;" %)
1089 (((
1090 **d) DR3: **total payload includes 22 entries of data.
1091 )))
1092 )))
1093 )))
1094
1095 (% _mstvisible="1" %)
1096 (((
1097 (% _mstvisible="2" %)
1098 (((
1099 (% _msthash="736729" _msttexthash="5848349" _mstvisible="3" style="text-align: left;" %)
1100 (((
1101 If devise doesn't have any data in the polling time. Device will uplink 11 bytes of 0   
1102 )))
1103 )))
1104 )))
1105
1106
1107 (% _mstvisible="1" style="text-align: left;" %)
1108 (% _msthash="315269" _msttexthash="104767" _mstvisible="3" %)**Example:**
1109
1110 (% _msthash="315270" _msttexthash="913822" _mstvisible="1" style="text-align: left;" %)
1111 If LHT65N has below data inside Flash:
1112
1113 (% _mstvisible="1" %)
1114 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
1115
1116 (% _mstvisible="1" %)
1117 (((
1118 (% _msthash="506081" _msttexthash="1663961" _mstvisible="2" style="text-align: left;" %)
1119 If user sends below downlink command: (% _mstvisible="3" style="background-color:yellow" %)3160065F9760066DA705
1120 )))
1121
1122 (% _mstvisible="1" %)
1123 (((
1124 (% _msthash="506082" _msttexthash="1092494" _mstvisible="2" style="text-align: left;" %)
1125 Where : Start time: 60065F97 = time 21/1/19 04:27:03
1126 )))
1127
1128 (% _mstvisible="1" %)
1129 (((
1130 (% _msthash="506083" _msttexthash="737269" _mstvisible="2" style="text-align: left;" %)
1131 Stop time 60066DA7= time 21/1/19 05:27:(% _msthash="903005" _msttexthash="9672" _mstvisible="2" %)03
1132 )))
1133
1134 (% _mstvisible="1" %)
1135 (((
1136 (% _mstvisible="2" %)
1137
1138 )))
1139
1140 (% _mstvisible="1" %)
1141 (((
1142 (% _msthash="506084" _msttexthash="751218" _mstvisible="2" style="text-align: left;" %)
1143 LHT65N will uplink this payload.
1144 )))
1145
1146 (% _mstvisible="1" %)
1147 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
1148
1149
1150 (% _msthash="315271" _msttexthash="12012546" _mstvisible="1" style="text-align: left;" %)
1151 (((
1152 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
1153 )))
1154
1155 (% _msthash="315237" _msttexthash="1385839" %)
1156 (((
1157 Where the first 11 bytes is for the first entry:
1158 )))
1159
1160 (% _msthash="315238" _msttexthash="274846" %)
1161 (((
1162 7FFF089801464160065F97
1163 )))
1164
1165 (% _msthash="315239" _msttexthash="617435" %)
1166 (((
1167 Ext sensor data=0x7FFF/100=327.67
1168 )))
1169
1170 (% _msthash="315240" _msttexthash="270543" %)
1171 (((
1172 Temp=0x0898/100=22.00
1173 )))
1174
1175 (% _msthash="315241" _msttexthash="211783" %)
1176 (((
1177 Hum=0x0146/10=32.6
1178 )))
1179
1180 (% _msthash="315242" _msttexthash="1569776" %)
1181 (((
1182 poll message flag & Ext=0x41,means reply data,Ext=1
1183 )))
1184
1185 (% _msthash="315243" _msttexthash="1120509" %)
1186 (((
1187 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
1188 )))
1189
1190
1191
1192 == 2.7 Alarm Mode ==
1193
1194
1195 (((
1196 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.
1197 )))
1198
1199 (((
1200 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
1201
1202
1203 )))
1204
1205 (((
1206 **AT COMMAND FOR ALARM MODE:**
1207 )))
1208
1209 (% _mstvisible="1" class="box infomessage" %)
1210 (((
1211 (((
1212 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled)
1213 )))
1214
1215 (((
1216 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1217 )))
1218
1219 (((
1220 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1221 )))
1222
1223 (((
1224 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
1225 )))
1226
1227 (((
1228 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1229 )))
1230 )))
1231
1232 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1233
1234 Total bytes: 8 bytes
1235
1236 **Example:**AA0100010001003C
1237
1238 WMOD=01
1239
1240 CITEMP=0001
1241
1242 TEMPlow=0001
1243
1244 TEMPhigh=003C
1245
1246
1247
1248 == 2.8 LED Indicator ==
1249
1250
1251 The LHT65 has a triple color LED which for easy showing different stage .
1252
1253 While user press ACT button, the LED will work as per LED status with ACT button.
1254
1255 In a normal working state:
1256
1257 * For each uplink, the BLUE LED or RED LED will blink once.
1258 BLUE LED when external sensor is connected.
1259 * RED LED when external sensor is not connected
1260 * For each success downlink, the PURPLE LED will blink once
1261
1262
1263 == 2.9 installation ==
1264
1265
1266 (% _mstvisible="1" %)
1267 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
1268
1269
1270
1271 = 3. Sensors and Accessories =
1272
1273
1274 == 3.1 E2 Extension Cable ==
1275
1276
1277 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1278
1279
1280 **1m long breakout cable for LHT65N. Features:**
1281
1282 * (((
1283 Use for AT Command， works for both LHT52/LHT65N
1284 )))
1285 * (((
1286 Update firmware for LHT65N, works for both LHT52/LHT65N
1287 )))
1288 * (((
1289 Supports ADC mode to monitor external ADC
1290 )))
1291 * (((
1292 Supports Interrupt mode
1293 )))
1294 * (((
1295 Exposed All pins from the LHT65N Type-C connector.
1296
1297
1298
1299 )))
1300
1301 [[image:image-20220619092421-3.png||height="371" width="529"]]
1302
1303
1304
1305
1306 == 3.2 E3 Temperature Probe ==
1307
1308
1309 [[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"]]
1310
1311
1312 Temperature sensor with 2 meters cable long
1313
1314 * Resolution: 0.0625 °C
1315 * ±0.5°C accuracy from -10°C to +85°C
1316 * ±2°C accuracy from -55°C to +125°C
1317 * Operating Range: -40 ~~ 125 °C
1318 * Working voltage 2.35v ~~ 5v
1319
1320
1321 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1322
1323
1324 (((
1325 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1326 )))
1327
1328 * (((
1329 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1330 )))
1331
1332 * (((
1333 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1334 )))
1335
1336 (((
1337 There are two kinds of commands to configure LHT65N, they are:
1338 )))
1339
1340 * (((
1341 (% style="color:#4f81bd" %)**General Commands**.
1342 )))
1343
1344 (((
1345 These commands are to configure:
1346 )))
1347
1348 1. (((
1349 General system settings like: uplink interval.
1350 )))
1351 1. (((
1352 LoRaWAN protocol & radio-related commands.
1353 )))
1354
1355 (((
1356 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]]
1357 )))
1358
1359 * (((
1360 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1361 )))
1362
1363 (((
1364 These commands are only valid for LHT65N, as below:
1365 )))
1366
1367
1368
1369 == 4.1 Set Transmit Interval Time ==
1370
1371
1372 Feature: Change LoRaWAN End Node Transmit Interval.
1373
1374
1375 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1376
1377 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
1378
1379
1380 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1381
1382 Format: Command Code (0x01) followed by 3 bytes time value.
1383
1384 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1385
1386 * **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1387
1388 * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
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 == 4.3 Enable/Disable uplink Temperature probe ID ==
1416
1417
1418 (((
1419 Feature: If PID is enabled, device will send the temperature probe ID on:
1420 )))
1421
1422 * (((
1423 First Packet after OTAA Join
1424 )))
1425 * (((
1426 Every 24 hours since the first packet.
1427 )))
1428
1429 (((
1430 PID is default set to disable (0)
1431
1432
1433 )))
1434
1435 (% style="color:#4f81bd" %)**AT Command:**
1436
1437 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1438
1439
1440 (% style="color:#4f81bd" %)**Downlink Command:**
1441
1442 * **0xA800**  **~-~->** AT+PID=0
1443 * **0xA801**     **~-~->** AT+PID=1
1444
1445
1446 == 4.4 Set Password ==
1447
1448
1449 Feature: Set device password, max 9 digits
1450
1451
1452 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1453
1454 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1455
1456
1457 (% style="color:#4f81bd" %)**Downlink Command:**
1458
1459 No downlink command for this feature.
1460
1461
1462
1463 == 4.5 Quit AT Command ==
1464
1465
1466 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1467
1468
1469 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1470
1471 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1472
1473
1474 (% style="color:#4f81bd" %)**Downlink Command:**
1475
1476 No downlink command for this feature.
1477
1478
1479
1480 == 4.6 Set to sleep mode ==
1481
1482
1483 Feature: Set device to sleep mode
1484
1485 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1486 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1487
1488 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1489
1490 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1491
1492
1493 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1494
1495 * There is no downlink command to set to Sleep mode.
1496
1497
1498 == 4.7 Set system time ==
1499
1500
1501 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1502
1503
1504 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1505
1506 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1507
1508
1509 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1510
1511 0x306007806000  ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1512
1513
1514
1515 == 4.8 Set Time Sync Mode ==
1516
1517
1518 (((
1519 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1520 )))
1521
1522 (((
1523 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.
1524
1525
1526 )))
1527
1528 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1529
1530 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1531
1532
1533 (% style="color:#4f81bd" %)**Downlink Command:**
1534
1535 0x28 01  ~/~/  Same As AT+SYNCMOD=1
1536 0x28 00  ~/~/  Same As AT+SYNCMOD=0
1537
1538
1539
1540 == 4.9 Set Time Sync Interval ==
1541
1542
1543 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1544
1545
1546 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1547
1548 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1549
1550
1551 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1552
1553 **0x29 0A**  ~/~/ Same as AT+SYNCTDC=0x0A
1554
1555
1556
1557 == 4.10 Print data entries base on page. ==
1558
1559
1560 Feature: Print the sector data from start page to stop page (max is 416 pages).
1561
1562
1563 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1564
1565 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1566
1567
1568 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1569
1570 No downlink commands for feature
1571
1572
1573
1574 == 4.11 Print last few data entries. ==
1575
1576
1577 Feature: Print the last few data entries
1578
1579
1580 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1581
1582 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1583
1584
1585 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1586
1587 No downlink commands for feature
1588
1589
1590
1591 == 4.12 Clear Flash Record ==
1592
1593
1594 Feature: Clear flash storage for data log feature.
1595
1596
1597 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1598
1599 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1600
1601
1602 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1603
1604 * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1605
1606
1607 == 4.13 Auto Send None-ACK messages ==
1608
1609
1610 (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
1611 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.
1612
1613
1614 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1615
1616 (% _msthash="315396" _msttexthash="734682" _mstvisible="1" %)
1617 The default factory setting is 0
1618
1619 (% _mstvisible="1" border="1" style="background-color:#ffffcc; color:green; width:450px" %)
1620 (% _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**
1621 (% _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
1622
1623 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1624
1625 * Example: 0x3401 ~/~/  Same as AT+PNACKMD=1
1626
1627
1628 = 5. Battery & How to replace =
1629
1630
1631 == 5.1 Battery Type ==
1632
1633
1634 (((
1635 (((
1636 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.
1637 )))
1638 )))
1639
1640 (((
1641
1642 )))
1643
1644 (((
1645 (((
1646 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1647 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1648 )))
1649 )))
1650
1651 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1652
1653
1654
1655 == 5.2 Replace Battery ==
1656
1657
1658 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.
1659
1660 [[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"]]
1661
1662
1663 == 5.3 Battery Life Analyze ==
1664
1665
1666 (((
1667 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:
1668 [[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]]
1669 )))
1670
1671 (((
1672
1673 )))
1674
1675 (((
1676 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]]
1677 )))
1678
1679
1680
1681 = 6. FAQ =
1682
1683
1684 == 6.1 How to use AT Command? ==
1685
1686
1687 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.
1688
1689 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1690
1691
1692 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1693
1694 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1695 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1696 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1697
1698 (((
1699 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.
1700 )))
1701
1702
1703 Input password and ATZ to activate LHT65N,As shown below:
1704
1705 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1706
1707
1708 (% _msthash="506066" _msttexthash="544869" %)
1709 AT Command List is as below:
1710
1711 (% _msthash="506067" _msttexthash="361920" %)
1712 AT+<CMD>? :  Help on <CMD>
1713
1714 (% _msthash="506068" _msttexthash="243061" %)
1715 AT+<CMD> :  Run <CMD>
1716
1717 (% _msthash="506069" _msttexthash="704197" %)
1718 AT+<CMD>=<value> :  Set the value
1719
1720 (% _msthash="506070" _msttexthash="455676" %)
1721 AT+<CMD>=? :  Get the value
1722
1723 (% _msthash="506071" _msttexthash="670553" %)
1724 AT+DEBUG:  Set more info output
1725
1726 (% _msthash="506072" _msttexthash="485888" %)
1727 ATZ:  Trig a reset of the MCU
1728
1729 (% _msthash="506073" _msttexthash="2068872" %)
1730 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1731
1732 (% _msthash="506074" _msttexthash="689169" %)
1733 AT+DEUI:  Get or Set the Device EUI
1734
1735 (% _msthash="506075" _msttexthash="960414" %)
1736 AT+DADDR:  Get or Set the Device Address
1737
1738 (% _msthash="506076" _msttexthash="1079897" %)
1739 AT+APPKEY:  Get or Set the Application Key
1740
1741 (% _msthash="506077" _msttexthash="1326143" %)
1742 AT+NWKSKEY:  Get or Set the Network Session Key
1743
1744 (% _msthash="506078" _msttexthash="1573000" %)
1745 AT+APPSKEY:  Get or Set the Application Session Key
1746
1747 (% _msthash="506079" _msttexthash="1041729" %)
1748 AT+APPEUI:  Get or Set the Application EUI
1749
1750 (% _msthash="506080" _msttexthash="2104206" %)
1751 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1752
1753 (% _msthash="506081" _msttexthash="3369288" %)
1754 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1755
1756 (% _msthash="506082" _msttexthash="1894529" %)
1757 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1758
1759 (% _msthash="506083" _msttexthash="3864172" %)
1760 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1761
1762 (% _msthash="506084" _msttexthash="1712204" %)
1763 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1764
1765 (% _msthash="506085" _msttexthash="1281202" %)
1766 AT+RX2FQ:  Get or Set the Rx2 window frequency
1767
1768 (% _msthash="506086" _msttexthash="2796781" %)
1769 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1770
1771 (% _msthash="506087" _msttexthash="3285165" %)
1772 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1773
1774 (% _msthash="506088" _msttexthash="3286179" %)
1775 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1776
1777 (% _msthash="506089" _msttexthash="4703803" %)
1778 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1779
1780 (% _msthash="506090" _msttexthash="4704999" %)
1781 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1782
1783 (% _msthash="506091" _msttexthash="1528683" %)
1784 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1785
1786 (% _msthash="506092" _msttexthash="757185" %)
1787 AT+NWKID:  Get or Set the Network ID
1788
1789 (% _msthash="506093" _msttexthash="1156597" %)
1790 AT+FCU:  Get or Set the Frame Counter Uplink
1791
1792 (% _msthash="506094" _msttexthash="1273987" %)
1793 AT+FCD:  Get or Set the Frame Counter Downlink
1794
1795 (% _msthash="506095" _msttexthash="859222" %)
1796 AT+CLASS:  Get or Set the Device Class
1797
1798 (% _msthash="506096" _msttexthash="384852" %)
1799 AT+JOIN:  Join network
1800
1801 (% _msthash="506097" _msttexthash="548626" %)
1802 AT+NJS:  Get the join status
1803
1804 (% _msthash="506098" _msttexthash="2546206" %)
1805 AT+SENDB:  Send hexadecimal data along with the application port
1806
1807 (% _msthash="506099" _msttexthash="1932307" %)
1808 AT+SEND:  Send text data along with the application port
1809
1810 (% _msthash="506100" _msttexthash="3560557" %)
1811 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1812
1813 (% _msthash="506101" _msttexthash="1429701" %)
1814 AT+RECV:  Print last received data in raw format
1815
1816 (% _msthash="506102" _msttexthash="1735981" %)
1817 AT+VER:  Get current image version and Frequency Band
1818
1819 (% _msthash="506103" _msttexthash="1189474" %)
1820 AT+CFM:  Get or Set the confirmation mode (0-1)
1821
1822 (% _msthash="506104" _msttexthash="1718210" %)
1823 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1824
1825 (% _msthash="506105" _msttexthash="1339403" %)
1826 AT+SNR:  Get the SNR of the last received packet
1827
1828 (% _msthash="506106" _msttexthash="1452009" %)
1829 AT+RSSI:  Get the RSSI of the last received packet
1830
1831 (% _msthash="506107" _msttexthash="2768142" %)
1832 AT+TDC:  Get or set the application data transmission interval in ms
1833
1834 (% _msthash="506108" _msttexthash="1083914" %)
1835 AT+PORT:  Get or set the application port
1836
1837 (% _msthash="506109" _msttexthash="622440" %)
1838 AT+DISAT:  Disable AT commands
1839
1840 (% _msthash="506110" _msttexthash="868361" %)
1841 AT+PWORD: Set password, max 9 digits
1842
1843 (% _msthash="506111" _msttexthash="2210299" %)
1844 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1845
1846 (% _msthash="506112" _msttexthash="2113462" %)
1847 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1848
1849 (% _msthash="506113" _msttexthash="2087423" %)
1850 AT+PDTA:  Print the sector data from start page to stop page
1851
1852 (% _msthash="506114" _msttexthash="1063127" %)
1853 AT+PLDTA:  Print the last few sets of data
1854
1855 (% _msthash="506115" _msttexthash="1999426" %)
1856 AT+CLRDTA:  Clear the storage, record position back to 1st
1857
1858 (% _msthash="506116" _msttexthash="442130" %)
1859 AT+SLEEP:  Set sleep mode
1860
1861 (% _msthash="506117" _msttexthash="1080222" %)
1862 AT+EXT:  Get or Set external sensor model
1863
1864 (% _msthash="506118" _msttexthash="1309490" %)
1865 AT+BAT:  Get the current battery voltage in mV
1866
1867 (% _msthash="506119" _msttexthash="813891" %)
1868 AT+CFG:  Print all configurations
1869
1870 (% _msthash="506120" _msttexthash="551707" %)
1871 AT+WMOD:  Get or Set Work Mode
1872
1873 (% _msthash="506121" _msttexthash="2631499" %)
1874 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1875
1876 (% _msthash="506122" _msttexthash="3907150" %)
1877 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1878
1879 (% _msthash="506123" _msttexthash="854620" %)
1880 AT+SETCNT:  Set the count at present
1881
1882 (% _msthash="506124" _msttexthash="2554877" %)
1883 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1884
1885 (% _msthash="506125" _msttexthash="771849" %)
1886 AT+RPL:  Get or set response level
1887
1888 (% _msthash="506126" _msttexthash="1484314" %)
1889 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1890
1891 (% _msthash="506127" _msttexthash="741728" %)
1892 AT+LEAPSEC:  Get or Set Leap Second
1893
1894 (% _msthash="506128" _msttexthash="1694017" %)
1895 AT+SYNCMOD:  Get or Set time synchronization method
1896
1897 (% _msthash="506129" _msttexthash="2235948" %)
1898 AT+SYNCTDC:  Get or set time synchronization interval in day
1899
1900 (% _msthash="506130" _msttexthash="425542" %)
1901 AT+PID:  Get or set the PID
1902
1903
1904
1905 == 6.2 Where to use AT commands and Downlink commands ==
1906
1907
1908 **AT commands：**
1909
1910 [[image:image-20220620153708-1.png||height="603" width="723"]]
1911
1912
1913 **Downlink commands:**
1914
1915
1916
1917 (% style="color:blue" %)**TTN:**
1918
1919 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1920
1921
1922
1923 (% style="color:blue" %)**Helium：**
1924
1925 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1926
1927
1928
1929 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1930
1931
1932 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1933
1934
1935 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1936
1937
1938
1939 (% style="color:blue" %)**Aws:**
1940
1941 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1942
1943
1944
1945 == 6.3 How to change the uplink interval？ ==
1946
1947
1948 Please see this link: [[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" style="background-color: rgb(255, 255, 255);"]]
1949
1950
1951
1952 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1953
1954
1955 [[image:image-20220615153355-1.png]]
1956
1957 [[image:1655802313617-381.png]]
1958
1959
1960 (((
1961 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.
1962 )))
1963
1964
1965 Input password and ATZ to activate LHT65N,As shown below:
1966
1967 [[image:image-20220615154519-3.png||height="672" width="807"]]
1968
1969
1970
1971 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1972
1973
1974 [[image:image-20220615153355-1.png]]
1975
1976
1977 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1978
1979 [[image:image-20220615170542-5.png]]
1980
1981
1982
1983 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1984
1985 (% _msthash="506146" _msttexthash="52173160" %)
1986 First connect the four lines；(% style="display:none" %)
1987
1988 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1989
1990
1991 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1992
1993 [[image:image-20220621170938-2.png]]
1994
1995
1996
1997 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1998
1999 [[image:image-20220615171334-6.png]]
2000
2001
2002 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
2003
2004
2005 When this interface appears, it indicates that the download has been completed.
2006
2007 [[image:image-20220620160723-8.png]]
2008
2009
2010 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
2011
2012
2013
2014 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
2015
2016
2017 [[image:image-20220623110706-1.png]]
2018
2019
2020 [[image:image-20220623112117-4.png||height="459" width="343"]]
2021
2022
2023 (((
2024 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.
2025 )))
2026
2027
2028 Input password and ATZ to activate LHT65N,As shown below:
2029
2030 [[image:image-20220615154519-3.png||height="672" width="807"]]
2031
2032
2033
2034 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
2035
2036
2037 [[image:image-20220623110706-1.png]]
2038
2039
2040 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
2041
2042 [[image:image-20220615170542-5.png]]
2043
2044
2045
2046 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
2047
2048 (% _msthash="506146" _msttexthash="52173160" %)
2049 First connect the four lines；
2050
2051 (% _msthash="506146" _msttexthash="52173160" %)
2052 [[image:image-20220623113959-5.png||height="528" width="397"]]
2053
2054 (% _msthash="506146" _msttexthash="52173160" %)
2055 Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
2056
2057
2058
2059 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
2060
2061 [[image:image-20220615171334-6.png]]
2062
2063
2064 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
2065
2066
2067 When this interface appears, it indicates that the download has been completed.
2068
2069 [[image:image-20220620160723-8.png]]
2070
2071
2072 Finally,restart reset device again
2073
2074
2075
2076 = 7. Order Info =
2077
2078
2079 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
2080
2081 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
2082
2083 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
2084 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
2085 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
2086 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
2087 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
2088 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
2089 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
2090 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
2091
2092 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
2093
2094 * (% style="color:red" %)**E3**(%%): External Temperature Probe
2095
2096 = 8. Packing Info =
2097
2098
2099 **Package Includes**:
2100
2101 * LHT65N Temperature & Humidity Sensor x 1
2102 * Optional external sensor
2103
2104 **Dimension and weight**:
2105
2106 * Device Size:  10 x 10 x 3.5 cm
2107 * Device Weight: 120.5g
2108
2109 = 9. Reference material =
2110
2111
2112 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
2113
2114 = 10. FCC Warning =
2115
2116
2117 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
2118
2119 (1) This device may not cause harmful interference；
2120
2121 (2) this device must accept any interference received, including interference that may cause undesired operation.
2122
2123
2124

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