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Version 205.1 by Edwin Chen on 2022/10/11 18:16
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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 == 1.3 Specification ==
65
66
67 (% style="color:#037691" %)**Built-in Temperature Sensor:**
68
69 * Resolution: 0.01 °C
70 * Accuracy Tolerance : Typ ±0.3 °C
71 * Long Term Drift: < 0.02 °C/yr
72 * Operating Range: -40 ~~ 85 °C
73
74 (% style="color:#037691" %)**Built-in Humidity Sensor:**
75
76 * Resolution: 0.04 %RH
77 * Accuracy Tolerance : Typ ±3 %RH
78 * Long Term Drift: < 0.02 °C/yr
79 * Operating Range: 0 ~~ 96 %RH
80
81 (% style="color:#037691" %)**External Temperature Sensor:**
82
83 * Resolution: 0.0625 °C
84 * ±0.5°C accuracy from -10°C to +85°C
85 * ±2°C accuracy from -55°C to +125°C
86 * Operating Range: -55 °C ~~ 125 °C
87
88 = 2. Connect LHT65N to IoT Server =
89
90
91 == 2.1 How does LHT65N work? ==
92
93
94 (((
95 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.
96 )))
97
98 (((
99 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.
100 )))
101
102
103
104 == 2.2 How to Activate LHT65N? ==
105
106
107 (((
108 The LHT65N has two working modes:
109 )))
110
111 * (((
112 (% 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.
113 )))
114 * (((
115 (% 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. 
116 )))
117
118 (((
119 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
120 )))
121
122
123 [[image:image-20220515123819-1.png||_mstalt="430742" _mstvisible="3" height="379" width="317"]]
124
125 [[image:image-20220525110604-2.png||_mstalt="427531" _mstvisible="3"]]
126
127
128
129 == 2.3 Example to join LoRaWAN network ==
130
131
132 (% _msthash="315240" _msttexthash="9205482" _mstvisible="1" class="wikigeneratedid" %)
133 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.
134
135
136 (% _mstvisible="1" class="wikigeneratedid" %)
137 [[image:image-20220522232442-1.png||_mstalt="427830" _mstvisible="3" height="387" width="648"]]
138
139
140 (((
141 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:
142 )))
143
144
145
146 === 2.3.1 Step 1: Create Device n TTN ===
147
148
149 (((
150 Create a device in TTN V3 with the OTAA keys from LHT65N.
151 )))
152
153 (((
154 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
155 )))
156
157 [[image:image-20220617150003-1.jpeg]]
158
159 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
160
161 Add APP EUI in the application.
162
163
164 [[image:image-20220522232916-3.png||_mstalt="430495" _mstvisible="3"]]
165
166
167 [[image:image-20220522232932-4.png||_mstalt="430157" _mstvisible="3"]]
168
169
170 [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
171
172
173
174 (% style="color:red" %)**Note: LHT65N use same payload as LHT65.**
175
176
177 [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
178
179
180 Input APP EUI,  APP KEY and DEV EUI:
181
182
183 [[image:image-20220522233118-7.png||_mstalt="430430" _mstvisible="3"]]
184
185
186
187
188 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
189
190
191 (((
192 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.
193 )))
194
195 [[image:image-20220522233300-8.png||_mstalt="428389" _mstvisible="3" height="219" width="722"]]
196
197
198
199
200 == 2.4 Uplink Payload ==
201
202
203 (((
204 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.
205 )))
206
207 (((
208 After each uplink, the (% _mstvisible="3" style="color:blue" %)**BLUE LED**(%%) will blink once.
209 )))
210
211 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:426px" %)
212 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 97px;" %)(% _mstvisible="5" %)
213 (((
214 (% _mstvisible="6" %)
215 (% _msthash="1817478" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
216 )))|=(% _mstvisible="4" style="width: 39px;" %)(% _mstvisible="5" %)
217 (((
218 (% _mstvisible="6" %)
219 (% _msthash="1817479" _msttexthash="4550" _mstvisible="8" %)**2**
220 )))|=(% _mstvisible="4" style="width: 100px;" %)(% _mstvisible="5" %)
221 (((
222 (% _mstvisible="6" %)
223 (% _msthash="1817480" _msttexthash="4550" _mstvisible="8" %)**2**
224 )))|=(% _mstvisible="4" style="width: 77px;" %)(% _mstvisible="5" %)
225 (((
226 (% _mstvisible="6" %)
227 (% _msthash="1817481" _msttexthash="4550" _mstvisible="8" %)**2**
228 )))|=(% _mstvisible="4" style="width: 47px;" %)(% _mstvisible="5" %)
229 (((
230 (% _mstvisible="6" %)
231 (% _msthash="1817482" _msttexthash="4459" _mstvisible="8" %)**1**
232 )))|=(% _mstvisible="4" style="width: 51px;" %)(% _mstvisible="5" %)
233 (((
234 (% _mstvisible="6" %)
235 (% _msthash="1817483" _msttexthash="4732" _mstvisible="8" %)**4**
236 )))
237 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:97px" %)(% _mstvisible="5" %)
238 (((
239 (% _mstvisible="6" %)
240 (% _msthash="1817484" _msttexthash="60203" _mstvisible="8" %)**Value**
241 )))|(% _mstvisible="4" style="width:39px" %)(% _mstvisible="5" %)
242 (((
243 (% _mstvisible="6" %)
244 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo" _msthash="1817485" _msttexthash="22594" _mstvisible="7"]]
245 )))|(% _mstvisible="4" style="width:100px" %)(% _mstvisible="5" %)
246 (((
247 (% _mstvisible="6" %)
248 (((
249 (% _mstvisible="7" %)
250 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224742" _msttexthash="405769" _mstvisible="8"]]
251 )))
252 )))|(% _mstvisible="4" style="width:77px" %)(% _mstvisible="5" %)
253 (((
254 (% _mstvisible="6" %)
255 (((
256 (% _mstvisible="7" %)
257 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2224743" _msttexthash="105872" _mstvisible="8"]]
258 )))
259
260 (% _mstvisible="6" %)
261 (((
262 (% _mstvisible="7" %)
263 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224744" _msttexthash="117429" _mstvisible="8"]]
264 )))
265 )))|(% _mstvisible="4" style="width:47px" %)(% _mstvisible="5" %)
266 (((
267 (% _mstvisible="6" %)
268 [[Ext>>||anchor="H2.4.5Ext23" _msthash="1817486" _msttexthash="32331" _mstvisible="7"]] #
269 )))|(% _mstvisible="4" style="width:51px" %)(% _mstvisible="5" %)
270 (((
271 (% _mstvisible="6" %)
272 [[Ext value>>||anchor="H2.4.6Extvalue" _msthash="1817487" _msttexthash="116545" _mstvisible="7"]]
273 )))
274
275 * The First 6 bytes: has fix meanings for every LHT65N.
276 * The 7th byte (EXT #): defines the external sensor model.
277 * 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.)
278
279 === 2.4.1 Decoder in TTN V3 ===
280
281
282 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.
283
284 Below is the position to put the decoder and LHT65N decoder can be download from here:
285
286
287 [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0 >>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0||_msthash="315253" _msttexthash="3509064" _mstvisible="2"]]
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 ===
296
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 === 2.4.3 Built-in Temperature ===
312
313
314 [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
315
316 * Temperature:  0x0ABB/100=27.47℃
317
318 [[image:image-20220522235639-3.png||_mstalt="432120" _mstvisible="3"]]
319
320 * Temperature:  (0xF5C6-65536)/100=-26.18℃
321
322 === 2.4.4 Built-in Humidity ===
323
324
325 [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
326
327 * Humidity:    0x025C/10=60.4%
328
329 === 2.4.5 Ext # ===
330
331
332 Bytes for External Sensor:
333
334 [[image:image-20220523152822-17.png||_mstalt="454545" _mstvisible="3"]]
335
336
337
338 === 2.4.6 Ext value ===
339
340
341 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
342
343
344 [[image:image-20220522235639-5.png||_mstalt="432848" _mstvisible="3"]]
345
346
347 * DS18B20 temp=0x0ADD/100=27.81℃
348
349 The last 2 bytes of data are meaningless
350
351 [[image:image-20220522235639-6.png||_mstalt="433212" _mstvisible="3"]]
352
353
354 * External temperature= (0xF54F-65536)/100=-27.37℃
355
356 The last 2 bytes of data are meaningless
357
358 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
359
360
361
362 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
363
364
365 (((
366 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:
367 )))
368
369 (((
370
371 )))
372
373 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
374 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 96px;" %)(% _mstvisible="5" %)
375 (((
376 (% _mstvisible="6" %)
377 (% _msthash="1817488" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
378 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
379 (((
380 (% _mstvisible="6" %)
381 (% _msthash="1817489" _msttexthash="4550" _mstvisible="8" %)**2**
382 )))|=(% _mstvisible="4" style="width: 99px;" %)(% _mstvisible="5" %)
383 (((
384 (% _mstvisible="6" %)
385 (% _msthash="1817490" _msttexthash="4550" _mstvisible="8" %)**2**
386 )))|=(% _mstvisible="4" style="width: 132px;" %)(% _mstvisible="5" %)
387 (((
388 (% _mstvisible="6" %)
389 (% _msthash="1817491" _msttexthash="4550" _mstvisible="8" %)**2**
390 )))|=(% _mstvisible="4" style="width: 54px;" %)(% _mstvisible="5" %)
391 (((
392 (% _mstvisible="6" %)
393 (% _msthash="1817492" _msttexthash="4459" _mstvisible="8" %)**1**
394 )))|=(% _mstvisible="4" style="width: 64px;" %)(% _mstvisible="5" %)
395 (((
396 (% _mstvisible="6" %)
397 (% _msthash="1817493" _msttexthash="4732" _mstvisible="8" %)**4**
398 )))
399 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:96px" %)(% _mstvisible="5" %)
400 (((
401 (% _mstvisible="6" %)
402 (% _msthash="1817494" _msttexthash="60203" _mstvisible="8" %)**Value**
403 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
404 (((
405 (% _mstvisible="6" %)
406 [[External temperature>>||anchor="H4.2SetExternalSensorMode" _msthash="1817495" _msttexthash="426517" _mstvisible="7"]]
407 )))|(% _mstvisible="4" style="width:99px" %)(% _mstvisible="5" %)
408 (((
409 (% _mstvisible="6" %)
410 (((
411 (% _mstvisible="7" %)
412 [[Built-In>>||anchor="H2.4.3Built-inTemperature" _msthash="2224745" _msttexthash="100464" _mstvisible="8"]]
413 )))
414
415 (% _mstvisible="6" %)
416 (((
417 (% _mstvisible="7" %)
418 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224746" _msttexthash="184041" _mstvisible="8"]]
419 )))
420 )))|(% _mstvisible="4" style="width:132px" %)(% _mstvisible="5" %)
421 (((
422 (% _mstvisible="6" %)
423 (((
424 (% _msthash="2224747" _msttexthash="136331" _mstvisible="7" %)
425 BAT Status &
426 )))
427
428 (% _mstvisible="6" %)
429 (((
430 (% _mstvisible="7" %)
431 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224748" _msttexthash="311181" _mstvisible="8"]]
432 )))
433 )))|(% _mstvisible="4" style="width:54px" %)(% _mstvisible="5" %)
434 (((
435 (% _msthash="1817496" _msttexthash="147225" _mstvisible="6" %)
436 Status & Ext
437 )))|(% _mstvisible="4" style="width:64px" %)(% _mstvisible="5" %)
438 (((
439 (% _mstvisible="6" %)
440 (((
441 (% _mstvisible="7" %)
442 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2224749" _msttexthash="227175" _mstvisible="8"]]
443 )))
444 )))
445
446 (% _mstvisible="1" %)
447 * (% _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**
448
449 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:469px" %)
450 (% _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]
451 (% _mstvisible="3" %)|(% _msthash="1230921" _msttexthash="60203" _mstvisible="4" style="width:65px" %)Value|(% _mstvisible="4" style="width:267px" %)(% _mstvisible="5" %)
452 (((
453 (% _msthash="1817497" _msttexthash="128427" _mstvisible="6" %)
454 BAT Status
455
456 (% _msthash="1817498" _msttexthash="472784" _mstvisible="6" %)
457 00(b): Ultra Low ( BAT <= 2.50v)
458
459 (% _msthash="1817499" _msttexthash="483678" _mstvisible="6" %)
460 01(b): Low  (2.50v <=BAT <= 2.55v)
461
462 (% _msthash="1817500" _msttexthash="440791" _mstvisible="6" %)
463 10(b): OK   (2.55v <= BAT <=2.65v)
464
465 (% _msthash="1817501" _msttexthash="334191" _mstvisible="6" %)
466 11(b): Good   (BAT >= 2.65v)
467 )))|(% _mstvisible="4" style="width:134px" %)(% _mstvisible="5" %)
468 (((
469 (% _mstvisible="6" %)
470 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="1817502" _msttexthash="311181" _mstvisible="7"]]
471
472 (% _mstvisible="6" %)
473
474 )))
475
476 * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
477
478 (% border="1" cellspacing="8" style="background-color:#ffffcc; color:green; width:520px" %)
479 |(% 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]**
480 |(% 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)
481
482 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
483 * (% 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.
484 * (% 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)
485
486 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
487
488
489 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
490
491 be used to power the external ADC sensor; user can control the power on time for this
492
493 sensor by setting:
494
495 AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)**Time to power this sensor, from 0 ~~ 65535ms**
496
497 For example:
498
499 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
500
501
502 Or use **downlink command A2** to set the same.
503
504 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
505
506 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.
507
508 [[image:image-20220628150112-1.png||height="241" width="285"]]
509
510
511 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
512
513 [[image:image-20220628150714-4.png]]
514
515
516 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.
517
518
519 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
520
521 [[image:image-20220628151005-5.png]]
522
523
524 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
525
526 [[image:image-20220628151056-6.png]]
527
528
529 3) Within range
530
531 [[image:image-20220628151143-7.png]]
532
533
534
535 ==== 2.4.6.4 Ext~=2 TMP117 Sensor （Since Firmware v1.3） ====
536
537
538 [[image:image-20220927095645-1.png||height="534" width="460"]]
539
540
541 **Ext=2,Temperature Sensor(TMP117)：**
542
543 [[image:image-20220906102307-7.png]]
544
545
546 (% style="color:blue" %)**Interrupt Mode and Counting Mode:**
547
548 The external cable NE2 can be use for MOD4 and MOD8
549
550
551
552
553 ==== 2.4.6.5 Ext~=4 Interrupt Mode （Since Firmware v1.3） ====
554
555
556 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will send an uplink when there is a trigger.**
557
558
559 (% style="color:blue" %)**Interrupt Mode can be used to connect to external interrupt sensors such as:**
560
561 **Case 1: Door Sensor.** 3.3v Out for such sensor is just to detect Open/Close.
562
563 In Open State, the power consumption is the same as if there is no probe
564
565 In Close state, the power consumption will be 3uA higher than normal.
566
567 [[image:image-20220906100852-1.png||height="205" width="377"]]
568
569
570 Ext=4,Interrupt Sensor：
571
572 (% border="2" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:512px" %)
573 |(% style="width:117px" %)(((
574 AT+EXT=4,1
575 )))|(% style="width:371px" %)(((
576 Sent uplink packet in both rising and falling interrupt
577 )))
578 |(% style="width:117px" %)(((
579 AT+EXT=4,2
580 )))|(% style="width:371px" %)(((
581 Sent uplink packet only in falling interrupt
582 )))
583 |(% style="width:117px" %)(((
584 AT+EXT=4,3
585 )))|(% style="width:371px" %)(((
586 Sent uplink packet only in rising interrupt
587 )))
588
589 Trigger by falling edge:
590
591 [[image:image-20220906101145-2.png]]
592
593
594 Trigger by raising edge：
595
596 [[image:image-20220906101145-3.png]]
597
598
599
600
601 ==== 2.4.6.6 Ext~=8 Counting Mode（Since Firmware v1.3） ====
602
603
604 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will count for every interrupt and uplink periodically.**
605
606
607 (% 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.
608
609 [[image:image-20220906101320-4.png||height="366" width="698"]]
610
611
612 (% 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
613
614 [[image:image-20220906101320-5.png||height="353" width="696"]]
615
616 Ext=8, Counting Sensor ( 4 bytes)：
617
618 (% border="2" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:381px" %)
619 |(% style="width:138px" %)(((
620 AT+EXT=8,0
621 )))|(% style="width:240px" %)(((
622 Count at falling interrupt
623 )))
624 |(% style="width:138px" %)(((
625 AT+EXT=8,1
626 )))|(% style="width:240px" %)(((
627 Count at rising interrupt
628 )))
629 |(% style="width:138px" %)(((
630 AT+SETCNT=60
631 )))|(% style="width:240px" %)(((
632 Sent current count to 60
633 )))
634
635 [[image:image-20220906101320-6.png]]
636
637
638 (% style="color:blue" %)**A2 downlink Command：**
639
640 A2 02:  Same as AT+EXT=2 (AT+EXT= second byte)
641
642 A2 06 01 F4:  Same as AT+EXT=6,500 (AT+EXT= second byte, third and fourth bytes)
643
644 A2 04 02:  Same as AT+EXT=4,2 (AT+EXT= second byte, third byte)
645
646 A2 08 01 00:  Same as AT+EXT=8,0 (AT+EXT= second byte, fourth byte)
647
648 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)
649
650
651 (% style="color:blue" %)**Modified ATWOOD command for external sensor TMP117 or DS18B20 temperature alarm.**
652
653
654 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
655
656 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
657
658 0): Cancel
659
660 1): Threshold alarm
661
662 2): Fluctuation alarm
663
664
665 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
666
667 (% 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.**
668
669
670 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
671
672 1):  If Alarm Mode is set to 1: Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
673
674 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
675
676
677 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.
678
679 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
680
681 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
682
683
684 (% style="color:blue" %)** Downlink:**
685
686 0xA5 00 ~-~- AT+WMOD=0.
687
688 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 )
689
690 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
691
692 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.
693
694
695
696
697 == 2.5 Show data on Datacake ==
698
699
700 (((
701 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:
702 )))
703
704 (((
705
706 )))
707
708 (((
709 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
710 )))
711
712 (((
713 (% 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.
714 )))
715
716 (((
717
718 )))
719
720 (((
721 Add Datacake:
722 )))
723
724
725 [[image:image-20220523000825-7.png||_mstalt="429884" _mstvisible="3" height="262" width="583"]]
726
727
728
729 Select default key as Access Key:
730
731
732 [[image:image-20220523000825-8.png||_mstalt="430248" _mstvisible="3" height="453" width="406"]]
733
734
735 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/||_mstvisible="2"]]) , add LHT65 device.
736
737
738 [[image:image-20220523000825-9.png||_mstalt="430612" _mstvisible="3" height="366" width="392"]]
739
740
741 [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
742
743
744
745 == 2.6 Datalog Feature ==
746
747
748 (((
749 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.
750 )))
751
752
753
754 === 2.6.1 Ways to get datalog via LoRaWAN ===
755
756
757 There are two methods:
758
759 **Method 1**: IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specified time range.
760
761
762 **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.
763
764 **Note for method 2:**
765
766 * a) LHT65N will do an ACK check for data records sending to make sure every data arrive server.
767 * 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.
768
769 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
770
771
772 [[image:image-20220703111700-2.png||height="381" width="1119"]]
773
774
775 === 2.6.2 Unix TimeStamp ===
776
777
778 LHT65N uses Unix TimeStamp format based on
779
780
781 [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
782
783
784
785 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
786
787 Below is the converter example
788
789 [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
790
791 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
792
793
794
795 === 2.6.3 Set Device Time ===
796
797
798 (((
799 There are two ways to set device's time:
800 )))
801
802 (((
803 **~1. Through LoRaWAN MAC Command (Default settings)**
804 )))
805
806 (((
807 User need to set SYNCMOD=1 to enable sync time via MAC command.
808 )))
809
810 (((
811 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).
812 )))
813
814 (((
815 (% 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.**
816 )))
817
818 (((
819
820 )))
821
822 (((
823 **2. Manually Set Time**
824 )))
825
826 (((
827 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
828 )))
829
830
831
832 === 2.6.4 Poll sensor value ===
833
834
835 User can poll sensor value based on timestamps from the server. Below is the downlink command.
836
837 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
838
839
840 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.
841
842 For example, downlink command **31 5FC5F350 5FC6 0160 05**
843
844 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
845
846 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
847
848
849
850 === 2.6.5 Datalog Uplink payload ===
851
852
853 (% _msthash="315267" _msttexthash="2245087" _mstvisible="1" %)
854 The Datalog poll reply uplink will use below payload format.
855
856 (% _mstvisible="1" %)
857 (((
858 (% _mstvisible="2" %)
859
860
861 (% _mstvisible="2" %)
862 (% _msthash="506080" _msttexthash="451581" _mstvisible="4" %)**Retrieval data payload**
863 )))
864
865 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
866 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 93px;" %)(% _mstvisible="5" %)
867 (((
868 (% _mstvisible="6" %)
869 (((
870 (% _mstvisible="7" %)
871 (% _msthash="2224750" _msttexthash="161122" _mstvisible="9" %)**Size(bytes)**
872 )))
873 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
874 (((
875 (% _mstvisible="6" %)
876 (((
877 (% _mstvisible="7" %)
878 (% _msthash="2224751" _msttexthash="4550" _mstvisible="9" %)**2**
879 )))
880 )))|=(% _mstvisible="4" style="width: 102px;" %)(% _mstvisible="5" %)
881 (((
882 (% _mstvisible="6" %)
883 (((
884 (% _mstvisible="7" %)
885 (% _msthash="2224752" _msttexthash="4550" _mstvisible="9" %)**2**
886 )))
887 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
888 (((
889 (% _mstvisible="6" %)
890 (((
891 (% _mstvisible="7" %)
892 (% _msthash="2224753" _msttexthash="4550" _mstvisible="9" %)**2**
893 )))
894 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
895 (((
896 (% _mstvisible="6" %)
897 (((
898 (% _mstvisible="7" %)
899 (% _msthash="2224754" _msttexthash="4459" _mstvisible="9" %)**1**
900 )))
901 )))|=(% _mstvisible="4" style="width: 48px;" %)(% _mstvisible="5" %)
902 (((
903 (% _mstvisible="6" %)
904 (((
905 (% _mstvisible="7" %)
906 (% _msthash="2224755" _msttexthash="4732" _mstvisible="9" %)**4**
907 )))
908 )))
909 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:93px" %)(% _mstvisible="5" %)
910 (((
911 (% _mstvisible="6" %)
912 (((
913 (% _mstvisible="7" %)
914 (% _msthash="2224756" _msttexthash="60203" _mstvisible="9" %)**Value**
915 )))
916 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
917 (((
918 (% _mstvisible="6" %)
919 (((
920 (% _mstvisible="7" %)
921 [[External sensor data>>||anchor="H2.4.6Extvalue" _msthash="2224757" _msttexthash="386672" _mstvisible="8"]]
922 )))
923 )))|(% _mstvisible="4" style="width:102px" %)(% _mstvisible="5" %)
924 (((
925 (% _mstvisible="6" %)
926 (((
927 (% _mstvisible="7" %)
928 (((
929 (% _mstvisible="8" %)
930 [[Built In>>||anchor="H2.4.3Built-inTemperature" _msthash="2671864" _msttexthash="91065" _mstvisible="9"]]
931 )))
932 )))
933
934 (% _mstvisible="6" %)
935 (((
936 (% _mstvisible="7" %)
937 (((
938 (% _mstvisible="8" %)
939 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2671865" _msttexthash="184041" _mstvisible="9"]]
940 )))
941 )))
942 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
943 (((
944 (% _mstvisible="6" %)
945 (((
946 (% _mstvisible="7" %)
947 (((
948 (% _mstvisible="8" %)
949 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2671866" _msttexthash="105872" _mstvisible="9"]]
950 )))
951 )))
952
953 (% _mstvisible="6" %)
954 (((
955 (% _mstvisible="7" %)
956 (((
957 (% _mstvisible="8" %)
958 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2671867" _msttexthash="117429" _mstvisible="9"]]
959 )))
960 )))
961 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
962 (((
963 (% _mstvisible="6" %)
964 (((
965 (% _msthash="2224758" _msttexthash="390390" _mstvisible="7" %)
966 Poll message flag & Ext
967 )))
968 )))|(% _mstvisible="4" style="width:48px" %)(% _mstvisible="5" %)
969 (((
970 (% _mstvisible="6" %)
971 (((
972 (% _mstvisible="7" %)
973 (((
974 (% _mstvisible="8" %)
975 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2671868" _msttexthash="227175" _mstvisible="9"]]
976 )))
977 )))
978
979 (% _mstvisible="6" %)
980 (((
981 (% _mstvisible="7" %)
982 (((
983 (% _mstvisible="8" %)
984
985 )))
986 )))
987 )))
988
989 (% _mstvisible="1" %)
990 (% _msthash="315268" _msttexthash="390390" _mstvisible="3" %)**Poll message flag & Ext**
991
992 (% _mstvisible="1" %)
993 (((
994 (% _mstvisible="2" %)
995 (((
996 (% _msthash="736723" _msttexthash="2005003" _mstvisible="3" %)
997 (((
998 [[image:image-20221006192726-1.png||height="112" width="754"]]
999
1000 (% 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)
1001
1002 (% class="mark" %)Poll Message Flag(%%): 1: This message is a poll message reply.
1003
1004
1005 )))
1006 )))
1007 )))
1008
1009 (% _mstvisible="1" %)
1010 * (% _mstvisible="3" %)
1011 (((
1012 (% _mstvisible="4" %)
1013 (((
1014 (% _msthash="1197157" _msttexthash="561548" _mstvisible="5" %)
1015 (((
1016 Poll Message Flag is set to 1.
1017 )))
1018 )))
1019 )))
1020 * (% _mstvisible="3" %)
1021 (((
1022 (% _mstvisible="4" %)
1023 (((
1024 (% _msthash="1197158" _msttexthash="9284964" _mstvisible="5" %)
1025 (((
1026 Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
1027 )))
1028 )))
1029 )))
1030
1031 (% _mstvisible="1" %)
1032 (((
1033 (% _mstvisible="2" %)
1034 (((
1035 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
1036 (((
1037
1038 )))
1039
1040 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
1041 (((
1042 For example, in US915 band, the max payload for different DR is:
1043 )))
1044 )))
1045 )))
1046
1047 (% _mstvisible="1" %)
1048 (((
1049 (% _mstvisible="2" %)
1050 (((
1051 (% _msthash="736725" _msttexthash="1065532" _mstvisible="3" %)
1052 (((
1053 a) DR0: max is 11 bytes so one entry of data
1054 )))
1055 )))
1056 )))
1057
1058 (% _mstvisible="1" %)
1059 (((
1060 (% _mstvisible="2" %)
1061 (((
1062 (% _msthash="736726" _msttexthash="3265665" _mstvisible="3" %)
1063 (((
1064 b) DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
1065 )))
1066 )))
1067 )))
1068
1069 (% _mstvisible="1" %)
1070 (((
1071 (% _mstvisible="2" %)
1072 (((
1073 (% _msthash="736727" _msttexthash="1454115" _mstvisible="3" style="text-align: left;" %)
1074 (((
1075 c) DR2: total payload includes 11 entries of data
1076 )))
1077 )))
1078 )))
1079
1080 (% _mstvisible="1" %)
1081 (((
1082 (% _mstvisible="2" %)
1083 (((
1084 (% _msthash="736728" _msttexthash="1483924" _mstvisible="3" style="text-align: left;" %)
1085 (((
1086 d) DR3: total payload includes 22 entries of data.
1087 )))
1088 )))
1089 )))
1090
1091 (% _mstvisible="1" %)
1092 (((
1093 (% _mstvisible="2" %)
1094 (((
1095 (% _msthash="736729" _msttexthash="5848349" _mstvisible="3" style="text-align: left;" %)
1096 (((
1097 If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0   
1098 )))
1099 )))
1100 )))
1101
1102
1103 (% _mstvisible="1" style="text-align: left;" %)
1104 (% _msthash="315269" _msttexthash="104767" _mstvisible="3" %)**Example:**
1105
1106 (% _msthash="315270" _msttexthash="913822" _mstvisible="1" style="text-align: left;" %)
1107 If LHT65N has below data inside Flash:
1108
1109 (% _mstvisible="1" %)
1110 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
1111
1112 (% _mstvisible="1" %)
1113 (((
1114 (% _msthash="506081" _msttexthash="1663961" _mstvisible="2" style="text-align: left;" %)
1115 If user sends below downlink command: (% _mstvisible="3" style="background-color:yellow" %)3160065F9760066DA705
1116 )))
1117
1118 (% _mstvisible="1" %)
1119 (((
1120 (% _msthash="506082" _msttexthash="1092494" _mstvisible="2" style="text-align: left;" %)
1121 Where : Start time: 60065F97 = time 21/1/19 04:27:03
1122 )))
1123
1124 (% _mstvisible="1" %)
1125 (((
1126 (% _msthash="506083" _msttexthash="737269" _mstvisible="2" style="text-align: left;" %)
1127 Stop time 60066DA7= time 21/1/19 05:27:(% _msthash="903005" _msttexthash="9672" _mstvisible="2" %)03
1128 )))
1129
1130 (% _mstvisible="1" %)
1131 (((
1132 (% _mstvisible="2" %)
1133
1134 )))
1135
1136 (% _mstvisible="1" %)
1137 (((
1138 (% _msthash="506084" _msttexthash="751218" _mstvisible="2" style="text-align: left;" %)
1139 LHT65N will uplink this payload.
1140 )))
1141
1142 (% _mstvisible="1" %)
1143 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
1144
1145
1146 (% _msthash="315271" _msttexthash="12012546" _mstvisible="1" style="text-align: left;" %)
1147 (((
1148 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
1149 )))
1150
1151 (% _msthash="315237" _msttexthash="1385839" %)
1152 (((
1153 Where the first 11 bytes is for the first entry:
1154 )))
1155
1156 (% _msthash="315238" _msttexthash="274846" %)
1157 (((
1158 7FFF089801464160065F97
1159 )))
1160
1161 (% _msthash="315239" _msttexthash="617435" %)
1162 (((
1163 Ext sensor data=0x7FFF/100=327.67
1164 )))
1165
1166 (% _msthash="315240" _msttexthash="270543" %)
1167 (((
1168 Temp=0x0898/100=22.00
1169 )))
1170
1171 (% _msthash="315241" _msttexthash="211783" %)
1172 (((
1173 Hum=0x0146/10=32.6
1174 )))
1175
1176 (% _msthash="315242" _msttexthash="1569776" %)
1177 (((
1178 poll message flag & Ext=0x41,means reply data,Ext=1
1179 )))
1180
1181 (% _msthash="315243" _msttexthash="1120509" %)
1182 (((
1183 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
1184 )))
1185
1186
1187
1188 == 2.7 Alarm Mode ==
1189
1190
1191 (((
1192 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.
1193 )))
1194
1195 (((
1196 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
1197
1198
1199 )))
1200
1201 (((
1202 **AT COMMAND FOR ALARM MODE:**
1203 )))
1204
1205 (% _mstvisible="1" class="box infomessage" %)
1206 (((
1207 (((
1208 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled)
1209 )))
1210
1211 (((
1212 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1213 )))
1214
1215 (((
1216 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1217 )))
1218
1219 (((
1220 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
1221 )))
1222
1223 (((
1224 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1225 )))
1226 )))
1227
1228 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1229
1230 Total bytes: 8 bytes
1231
1232 **Example:**AA0100010001003C
1233
1234 WMOD=01
1235
1236 CITEMP=0001
1237
1238 TEMPlow=0001
1239
1240 TEMPhigh=003C
1241
1242
1243
1244 == 2.8 LED Indicator ==
1245
1246
1247 The LHT65 has a triple color LED which for easy showing different stage .
1248
1249 While user press ACT button, the LED will work as per LED status with ACT button.
1250
1251 In a normal working state:
1252
1253 * For each uplink, the BLUE LED or RED LED will blink once.
1254 BLUE LED when external sensor is connected.
1255 * RED LED when external sensor is not connected
1256 * For each success downlink, the PURPLE LED will blink once
1257
1258 == 2.9 installation ==
1259
1260
1261 (% _mstvisible="1" %)
1262 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
1263
1264
1265
1266 = 3. Sensors and Accessories =
1267
1268
1269 == 3.1 E2 Extension Cable ==
1270
1271
1272 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1273
1274
1275 **1m long breakout cable for LHT65N. Features:**
1276
1277 * (((
1278 Use for AT Command， works for both LHT52/LHT65N
1279 )))
1280 * (((
1281 Update firmware for LHT65N, works for both LHT52/LHT65N
1282 )))
1283 * (((
1284 Supports ADC mode to monitor external ADC
1285 )))
1286 * (((
1287 Supports Interrupt mode
1288 )))
1289 * (((
1290 Exposed All pins from the LHT65N Type-C connector.
1291
1292
1293
1294 )))
1295
1296 [[image:image-20220619092421-3.png||height="371" width="529"]]
1297
1298
1299
1300
1301 == 3.2 E3 Temperature Probe ==
1302
1303
1304 [[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"]]
1305
1306
1307 Temperature sensor with 2 meters cable long
1308
1309 * Resolution: 0.0625 °C
1310 * ±0.5°C accuracy from -10°C to +85°C
1311 * ±2°C accuracy from -55°C to +125°C
1312 * Operating Range: -40 ~~ 125 °C
1313 * Working voltage 2.35v ~~ 5v
1314
1315 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1316
1317
1318 (((
1319 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1320 )))
1321
1322 * (((
1323 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1324 )))
1325
1326 * (((
1327 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1328 )))
1329
1330 (((
1331 There are two kinds of commands to configure LHT65N, they are:
1332 )))
1333
1334 * (((
1335 (% style="color:#4f81bd" %)**General Commands**.
1336 )))
1337
1338 (((
1339 These commands are to configure:
1340 )))
1341
1342 1. (((
1343 General system settings like: uplink interval.
1344 )))
1345 1. (((
1346 LoRaWAN protocol & radio-related commands.
1347 )))
1348
1349 (((
1350 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]]
1351 )))
1352
1353 * (((
1354 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1355 )))
1356
1357 (((
1358 These commands are only valid for LHT65N, as below:
1359 )))
1360
1361
1362
1363 == 4.1 Set Transmit Interval Time ==
1364
1365
1366 Feature: Change LoRaWAN End Node Transmit Interval.
1367
1368
1369 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1370
1371 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
1372
1373
1374 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1375
1376 Format: Command Code (0x01) followed by 3 bytes time value.
1377
1378 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1379
1380 * **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1381
1382 * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
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 == 4.3 Enable/Disable uplink Temperature probe ID ==
1408
1409
1410 (((
1411 Feature: If PID is enabled, device will send the temperature probe ID on:
1412 )))
1413
1414 * (((
1415 First Packet after OTAA Join
1416 )))
1417 * (((
1418 Every 24 hours since the first packet.
1419 )))
1420
1421 (((
1422 PID is default set to disable (0)
1423
1424
1425 )))
1426
1427 (% style="color:#4f81bd" %)**AT Command:**
1428
1429 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1430
1431
1432 (% style="color:#4f81bd" %)**Downlink Command:**
1433
1434 * **0xA800**  **~-~->** AT+PID=0
1435 * **0xA801**     **~-~->** AT+PID=1
1436
1437 == 4.4 Set Password ==
1438
1439
1440 Feature: Set device password, max 9 digits
1441
1442
1443 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1444
1445 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1446
1447
1448 (% style="color:#4f81bd" %)**Downlink Command:**
1449
1450 No downlink command for this feature.
1451
1452
1453
1454 == 4.5 Quit AT Command ==
1455
1456
1457 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1458
1459
1460 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1461
1462 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1463
1464
1465 (% style="color:#4f81bd" %)**Downlink Command:**
1466
1467 No downlink command for this feature.
1468
1469
1470
1471 == 4.6 Set to sleep mode ==
1472
1473
1474 Feature: Set device to sleep mode
1475
1476 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1477 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1478
1479 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1480
1481 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1482
1483
1484 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1485
1486 * There is no downlink command to set to Sleep mode.
1487
1488 == 4.7 Set system time ==
1489
1490
1491 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1492
1493
1494 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1495
1496 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1497
1498
1499 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1500
1501 0x306007806000  ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1502
1503
1504
1505 == 4.8 Set Time Sync Mode ==
1506
1507
1508 (((
1509 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1510 )))
1511
1512 (((
1513 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.
1514
1515
1516 )))
1517
1518 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1519
1520 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1521
1522
1523 (% style="color:#4f81bd" %)**Downlink Command:**
1524
1525 0x28 01  ~/~/  Same As AT+SYNCMOD=1
1526 0x28 00  ~/~/  Same As AT+SYNCMOD=0
1527
1528
1529
1530 == 4.9 Set Time Sync Interval ==
1531
1532
1533 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1534
1535
1536 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1537
1538 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1539
1540
1541 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1542
1543 **0x29 0A** ~/~/ Same as AT+SYNCTDC=0x0A
1544
1545
1546
1547 == 4.10 Print data entries base on page. ==
1548
1549
1550 Feature: Print the sector data from start page to stop page (max is 416 pages).
1551
1552
1553 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1554
1555 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1556
1557
1558 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1559
1560 No downlink commands for feature
1561
1562
1563
1564 == 4.11 Print last few data entries. ==
1565
1566
1567 Feature: Print the last few data entries
1568
1569
1570 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1571
1572 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1573
1574
1575 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1576
1577 No downlink commands for feature
1578
1579
1580
1581 == 4.12 Clear Flash Record ==
1582
1583
1584 Feature: Clear flash storage for data log feature.
1585
1586
1587 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1588
1589 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1590
1591
1592 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1593
1594 * Example: 0xA301 ~/~/Same as AT+CLRDTA
1595
1596 == 4.13 Auto Send None-ACK messages ==
1597
1598
1599 (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
1600 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.
1601
1602
1603 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1604
1605 (% _msthash="315396" _msttexthash="734682" _mstvisible="1" %)
1606 The default factory setting is 0
1607
1608 (% _mstvisible="1" border="1" style="background-color:#ffffcc; color:green; width:450px" %)
1609 (% _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**
1610 (% _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
1611
1612 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1613
1614 * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1615
1616 = 5. Battery & How to replace =
1617
1618
1619 == 5.1 Battery Type ==
1620
1621
1622 (((
1623 (((
1624 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.
1625 )))
1626 )))
1627
1628 (((
1629
1630 )))
1631
1632 (((
1633 (((
1634 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1635 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1636 )))
1637 )))
1638
1639 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1640
1641
1642
1643 == 5.2 Replace Battery ==
1644
1645
1646 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.
1647
1648 [[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"]]
1649
1650
1651 == 5.3 Battery Life Analyze ==
1652
1653
1654 (((
1655 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:
1656 [[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]]
1657 )))
1658
1659 (((
1660
1661 )))
1662
1663 (((
1664 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]]
1665 )))
1666
1667
1668
1669 = 6. FAQ =
1670
1671
1672 == 6.1 How to use AT Command? ==
1673
1674
1675 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.
1676
1677 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1678
1679
1680 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1681
1682 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1683 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1684 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1685
1686 (((
1687 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.
1688 )))
1689
1690
1691 Input password and ATZ to activate LHT65N,As shown below:
1692
1693 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1694
1695
1696 (% _msthash="506066" _msttexthash="544869" %)
1697 AT Command List is as below:
1698
1699 (% _msthash="506067" _msttexthash="361920" %)
1700 AT+<CMD>? :  Help on <CMD>
1701
1702 (% _msthash="506068" _msttexthash="243061" %)
1703 AT+<CMD> :  Run <CMD>
1704
1705 (% _msthash="506069" _msttexthash="704197" %)
1706 AT+<CMD>=<value> :  Set the value
1707
1708 (% _msthash="506070" _msttexthash="455676" %)
1709 AT+<CMD>=? :  Get the value
1710
1711 (% _msthash="506071" _msttexthash="670553" %)
1712 AT+DEBUG:  Set more info output
1713
1714 (% _msthash="506072" _msttexthash="485888" %)
1715 ATZ:  Trig a reset of the MCU
1716
1717 (% _msthash="506073" _msttexthash="2068872" %)
1718 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1719
1720 (% _msthash="506074" _msttexthash="689169" %)
1721 AT+DEUI:  Get or Set the Device EUI
1722
1723 (% _msthash="506075" _msttexthash="960414" %)
1724 AT+DADDR:  Get or Set the Device Address
1725
1726 (% _msthash="506076" _msttexthash="1079897" %)
1727 AT+APPKEY:  Get or Set the Application Key
1728
1729 (% _msthash="506077" _msttexthash="1326143" %)
1730 AT+NWKSKEY:  Get or Set the Network Session Key
1731
1732 (% _msthash="506078" _msttexthash="1573000" %)
1733 AT+APPSKEY:  Get or Set the Application Session Key
1734
1735 (% _msthash="506079" _msttexthash="1041729" %)
1736 AT+APPEUI:  Get or Set the Application EUI
1737
1738 (% _msthash="506080" _msttexthash="2104206" %)
1739 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1740
1741 (% _msthash="506081" _msttexthash="3369288" %)
1742 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1743
1744 (% _msthash="506082" _msttexthash="1894529" %)
1745 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1746
1747 (% _msthash="506083" _msttexthash="3864172" %)
1748 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1749
1750 (% _msthash="506084" _msttexthash="1712204" %)
1751 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1752
1753 (% _msthash="506085" _msttexthash="1281202" %)
1754 AT+RX2FQ:  Get or Set the Rx2 window frequency
1755
1756 (% _msthash="506086" _msttexthash="2796781" %)
1757 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1758
1759 (% _msthash="506087" _msttexthash="3285165" %)
1760 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1761
1762 (% _msthash="506088" _msttexthash="3286179" %)
1763 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1764
1765 (% _msthash="506089" _msttexthash="4703803" %)
1766 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1767
1768 (% _msthash="506090" _msttexthash="4704999" %)
1769 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1770
1771 (% _msthash="506091" _msttexthash="1528683" %)
1772 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1773
1774 (% _msthash="506092" _msttexthash="757185" %)
1775 AT+NWKID:  Get or Set the Network ID
1776
1777 (% _msthash="506093" _msttexthash="1156597" %)
1778 AT+FCU:  Get or Set the Frame Counter Uplink
1779
1780 (% _msthash="506094" _msttexthash="1273987" %)
1781 AT+FCD:  Get or Set the Frame Counter Downlink
1782
1783 (% _msthash="506095" _msttexthash="859222" %)
1784 AT+CLASS:  Get or Set the Device Class
1785
1786 (% _msthash="506096" _msttexthash="384852" %)
1787 AT+JOIN:  Join network
1788
1789 (% _msthash="506097" _msttexthash="548626" %)
1790 AT+NJS:  Get the join status
1791
1792 (% _msthash="506098" _msttexthash="2546206" %)
1793 AT+SENDB:  Send hexadecimal data along with the application port
1794
1795 (% _msthash="506099" _msttexthash="1932307" %)
1796 AT+SEND:  Send text data along with the application port
1797
1798 (% _msthash="506100" _msttexthash="3560557" %)
1799 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1800
1801 (% _msthash="506101" _msttexthash="1429701" %)
1802 AT+RECV:  Print last received data in raw format
1803
1804 (% _msthash="506102" _msttexthash="1735981" %)
1805 AT+VER:  Get current image version and Frequency Band
1806
1807 (% _msthash="506103" _msttexthash="1189474" %)
1808 AT+CFM:  Get or Set the confirmation mode (0-1)
1809
1810 (% _msthash="506104" _msttexthash="1718210" %)
1811 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1812
1813 (% _msthash="506105" _msttexthash="1339403" %)
1814 AT+SNR:  Get the SNR of the last received packet
1815
1816 (% _msthash="506106" _msttexthash="1452009" %)
1817 AT+RSSI:  Get the RSSI of the last received packet
1818
1819 (% _msthash="506107" _msttexthash="2768142" %)
1820 AT+TDC:  Get or set the application data transmission interval in ms
1821
1822 (% _msthash="506108" _msttexthash="1083914" %)
1823 AT+PORT:  Get or set the application port
1824
1825 (% _msthash="506109" _msttexthash="622440" %)
1826 AT+DISAT:  Disable AT commands
1827
1828 (% _msthash="506110" _msttexthash="868361" %)
1829 AT+PWORD: Set password, max 9 digits
1830
1831 (% _msthash="506111" _msttexthash="2210299" %)
1832 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1833
1834 (% _msthash="506112" _msttexthash="2113462" %)
1835 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1836
1837 (% _msthash="506113" _msttexthash="2087423" %)
1838 AT+PDTA:  Print the sector data from start page to stop page
1839
1840 (% _msthash="506114" _msttexthash="1063127" %)
1841 AT+PLDTA:  Print the last few sets of data
1842
1843 (% _msthash="506115" _msttexthash="1999426" %)
1844 AT+CLRDTA:  Clear the storage, record position back to 1st
1845
1846 (% _msthash="506116" _msttexthash="442130" %)
1847 AT+SLEEP:  Set sleep mode
1848
1849 (% _msthash="506117" _msttexthash="1080222" %)
1850 AT+EXT:  Get or Set external sensor model
1851
1852 (% _msthash="506118" _msttexthash="1309490" %)
1853 AT+BAT:  Get the current battery voltage in mV
1854
1855 (% _msthash="506119" _msttexthash="813891" %)
1856 AT+CFG:  Print all configurations
1857
1858 (% _msthash="506120" _msttexthash="551707" %)
1859 AT+WMOD:  Get or Set Work Mode
1860
1861 (% _msthash="506121" _msttexthash="2631499" %)
1862 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1863
1864 (% _msthash="506122" _msttexthash="3907150" %)
1865 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1866
1867 (% _msthash="506123" _msttexthash="854620" %)
1868 AT+SETCNT:  Set the count at present
1869
1870 (% _msthash="506124" _msttexthash="2554877" %)
1871 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1872
1873 (% _msthash="506125" _msttexthash="771849" %)
1874 AT+RPL:  Get or set response level
1875
1876 (% _msthash="506126" _msttexthash="1484314" %)
1877 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1878
1879 (% _msthash="506127" _msttexthash="741728" %)
1880 AT+LEAPSEC:  Get or Set Leap Second
1881
1882 (% _msthash="506128" _msttexthash="1694017" %)
1883 AT+SYNCMOD:  Get or Set time synchronization method
1884
1885 (% _msthash="506129" _msttexthash="2235948" %)
1886 AT+SYNCTDC:  Get or set time synchronization interval in day
1887
1888 (% _msthash="506130" _msttexthash="425542" %)
1889 AT+PID:  Get or set the PID
1890
1891
1892
1893 == 6.2 Where to use AT commands and Downlink commands ==
1894
1895
1896 **AT commands：**
1897
1898 [[image:image-20220620153708-1.png||height="603" width="723"]]
1899
1900
1901 **Downlink commands:**
1902
1903
1904
1905 (% style="color:blue" %)**TTN:**
1906
1907 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1908
1909
1910
1911 (% style="color:blue" %)**Helium：**
1912
1913 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1914
1915
1916
1917 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1918
1919
1920 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1921
1922
1923 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1924
1925
1926
1927 (% style="color:blue" %)**Aws:**
1928
1929 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1930
1931
1932
1933 == 6.3 How to change the uplink interval？ ==
1934
1935
1936 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);"]]
1937
1938
1939
1940 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1941
1942
1943 [[image:image-20220615153355-1.png]]
1944
1945 [[image:1655802313617-381.png]]
1946
1947
1948 (((
1949 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.
1950 )))
1951
1952
1953 Input password and ATZ to activate LHT65N,As shown below:
1954
1955 [[image:image-20220615154519-3.png||height="672" width="807"]]
1956
1957
1958
1959 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1960
1961
1962 [[image:image-20220615153355-1.png]]
1963
1964
1965 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1966
1967 [[image:image-20220615170542-5.png]]
1968
1969
1970
1971 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1972
1973 (% _msthash="506146" _msttexthash="52173160" %)
1974 First connect the four lines；(% style="display:none" %)
1975
1976 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1977
1978
1979 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1980
1981 [[image:image-20220621170938-2.png]]
1982
1983
1984
1985 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1986
1987 [[image:image-20220615171334-6.png]]
1988
1989
1990 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1991
1992
1993 When this interface appears, it indicates that the download has been completed.
1994
1995 [[image:image-20220620160723-8.png]]
1996
1997
1998 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1999
2000
2001
2002 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
2003
2004
2005 [[image:image-20220623110706-1.png]]
2006
2007
2008 [[image:image-20220623112117-4.png||height="459" width="343"]]
2009
2010
2011 (((
2012 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.
2013 )))
2014
2015
2016 Input password and ATZ to activate LHT65N,As shown below:
2017
2018 [[image:image-20220615154519-3.png||height="672" width="807"]]
2019
2020
2021
2022 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
2023
2024
2025 [[image:image-20220623110706-1.png]]
2026
2027
2028 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
2029
2030 [[image:image-20220615170542-5.png]]
2031
2032
2033
2034 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
2035
2036 (% _msthash="506146" _msttexthash="52173160" %)
2037 First connect the four lines；
2038
2039 (% _msthash="506146" _msttexthash="52173160" %)
2040 [[image:image-20220623113959-5.png||height="528" width="397"]]
2041
2042 (% _msthash="506146" _msttexthash="52173160" %)
2043 Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
2044
2045
2046
2047 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
2048
2049 [[image:image-20220615171334-6.png]]
2050
2051
2052 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
2053
2054
2055 When this interface appears, it indicates that the download has been completed.
2056
2057 [[image:image-20220620160723-8.png]]
2058
2059
2060 Finally,restart reset device again
2061
2062
2063
2064 = 7. Order Info =
2065
2066
2067 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
2068
2069 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
2070
2071 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
2072 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
2073 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
2074 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
2075 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
2076 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
2077 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
2078 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
2079
2080 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
2081
2082 * (% style="color:red" %)**E3**(%%): External Temperature Probe
2083
2084 = 8. Packing Info =
2085
2086
2087 **Package Includes**:
2088
2089 * LHT65N Temperature & Humidity Sensor x 1
2090 * Optional external sensor
2091
2092 **Dimension and weight**:
2093
2094 * Device Size:  10 x 10 x 3.5 cm
2095 * Device Weight: 120.5g
2096
2097 = 9. Reference material =
2098
2099
2100 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
2101
2102 = 10. FCC Warning =
2103
2104
2105 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
2106
2107 (1) This device may not cause harmful interference；
2108
2109 (2) this device must accept any interference received, including interference that may cause undesired operation.
2110
2111
2112