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Version 171.1 by Bei Jinggeng on 2022/06/23 11:07
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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 == 1.1 What is LHT65N Temperature & Humidity Sensor ==
20
21
22 (((
23 The Dragino LHT65N Temperature & Humidity sensor is a Long Range LoRaWAN Sensor. It includes a (% style="color:#4f81bd" %)**built-in Temperature & Humidity sensor**(%%) and has an external sensor connector to connect to an external (% style="color:#4f81bd" %)**Temperature Sensor.**
24 )))
25
26 (((
27 The LHT65N allows users to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, building automation, and so on.
28 )))
29
30 (((
31 LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
32 )))
33
34 (((
35 LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
36 )))
37
38 (((
39 LHT65N supports (% style="color:#4f81bd" %)**Datalog Feature**(%%). It will record the data when there is no network coverage and users can retrieve the sensor value later to ensure no miss for every sensor reading.
40 )))
41
42 (((
43 *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
44 )))
45
46
47 == 1.2 Features ==
48
49 * Wall mountable
50 * LoRaWAN v1.0.3 Class A protocol
51 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
52 * AT Commands to change parameters
53 * Remote configure parameters via LoRaWAN Downlink
54 * Firmware upgradeable via program port
55 * Built-in 2400mAh battery for up to 10 years of use.
56 * Built-in Temperature & Humidity sensor
57 * Optional External Sensors
58 * Tri-color LED to indicate working status
59 * Datalog feature
60
61
62
63
64
65 == 1.3 Specification ==
66
67
68 **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 **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 **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
91
92
93 = 2. Connect LHT65N to IoT Server =
94
95 == 2.1 How does LHT65N work? ==
96
97 (((
98 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.
99 )))
100
101 (((
102 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.
103 )))
104
105
106 == 2.2 How to Activate LHT65N? ==
107
108 (((
109 The LHT65N has two working modes:
110 )))
111
112 * (((
113 (% 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.
114 )))
115 * (((
116 (% 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. 
117 )))
118
119 (((
120 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
121 )))
122
123
124 [[image:image-20220515123819-1.png||_mstalt="430742" _mstvisible="3" height="379" width="317"]]
125
126 [[image:image-20220525110604-2.png||_mstalt="427531" _mstvisible="3"]]
127
128
129
130 == 2.3 Example to join LoRaWAN network ==
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 (% _mstvisible="1" class="wikigeneratedid" %)
136 [[image:image-20220522232442-1.png||_mstalt="427830" _mstvisible="3" height="387" width="648"]]
137
138
139 (((
140 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:
141 )))
142
143
144
145 === 2.3.1 Step 1: Create Device n TTN ===
146
147 (((
148 Create a device in TTN V3 with the OTAA keys from LHT65N.
149 )))
150
151 (((
152 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
153 )))
154
155 [[image:image-20220617150003-1.jpeg]]
156
157 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
158
159 Add APP EUI in the application.
160
161
162 [[image:image-20220522232916-3.png||_mstalt="430495" _mstvisible="3"]]
163
164
165 [[image:image-20220522232932-4.png||_mstalt="430157" _mstvisible="3"]]
166
167
168 [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
169
170
171 Note: LHT65N use same payload as LHT65.
172
173
174 [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
175
176
177 Input APP EUI,  APP KEY and DEV EUI:
178
179
180 [[image:image-20220522233118-7.png||_mstalt="430430" _mstvisible="3"]]
181
182
183
184
185 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
186
187 (((
188 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.
189 )))
190
191 [[image:image-20220522233300-8.png||_mstalt="428389" _mstvisible="3" height="219" width="722"]]
192
193
194
195
196 == 2.4 Uplink Payload ==
197
198 (((
199 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.
200 )))
201
202 (((
203 After each uplink, the (% _mstvisible="3" style="color:blue" %)**BLUE LED**(%%) will blink once.
204 )))
205
206 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:426px" %)
207 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 97px;" %)(% _mstvisible="5" %)
208 (((
209 (% _mstvisible="6" %)
210 (% _msthash="1817478" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
211 )))|=(% _mstvisible="4" style="width: 39px;" %)(% _mstvisible="5" %)
212 (((
213 (% _mstvisible="6" %)
214 (% _msthash="1817479" _msttexthash="4550" _mstvisible="8" %)**2**
215 )))|=(% _mstvisible="4" style="width: 100px;" %)(% _mstvisible="5" %)
216 (((
217 (% _mstvisible="6" %)
218 (% _msthash="1817480" _msttexthash="4550" _mstvisible="8" %)**2**
219 )))|=(% _mstvisible="4" style="width: 77px;" %)(% _mstvisible="5" %)
220 (((
221 (% _mstvisible="6" %)
222 (% _msthash="1817481" _msttexthash="4550" _mstvisible="8" %)**2**
223 )))|=(% _mstvisible="4" style="width: 47px;" %)(% _mstvisible="5" %)
224 (((
225 (% _mstvisible="6" %)
226 (% _msthash="1817482" _msttexthash="4459" _mstvisible="8" %)**1**
227 )))|=(% _mstvisible="4" style="width: 51px;" %)(% _mstvisible="5" %)
228 (((
229 (% _mstvisible="6" %)
230 (% _msthash="1817483" _msttexthash="4732" _mstvisible="8" %)**4**
231 )))
232 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:97px" %)(% _mstvisible="5" %)
233 (((
234 (% _mstvisible="6" %)
235 (% _msthash="1817484" _msttexthash="60203" _mstvisible="8" %)**Value**
236 )))|(% _mstvisible="4" style="width:39px" %)(% _mstvisible="5" %)
237 (((
238 (% _mstvisible="6" %)
239 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo" _msthash="1817485" _msttexthash="22594" _mstvisible="7"]]
240 )))|(% _mstvisible="4" style="width:100px" %)(% _mstvisible="5" %)
241 (((
242 (% _mstvisible="6" %)
243 (((
244 (% _mstvisible="7" %)
245 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224742" _msttexthash="405769" _mstvisible="8"]]
246 )))
247 )))|(% _mstvisible="4" style="width:77px" %)(% _mstvisible="5" %)
248 (((
249 (% _mstvisible="6" %)
250 (((
251 (% _mstvisible="7" %)
252 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2224743" _msttexthash="105872" _mstvisible="8"]]
253 )))
254
255 (% _mstvisible="6" %)
256 (((
257 (% _mstvisible="7" %)
258 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224744" _msttexthash="117429" _mstvisible="8"]]
259 )))
260 )))|(% _mstvisible="4" style="width:47px" %)(% _mstvisible="5" %)
261 (((
262 (% _mstvisible="6" %)
263 [[Ext>>||anchor="H2.4.5Ext23" _msthash="1817486" _msttexthash="32331" _mstvisible="7"]] #
264 )))|(% _mstvisible="4" style="width:51px" %)(% _mstvisible="5" %)
265 (((
266 (% _mstvisible="6" %)
267 [[Ext value>>||anchor="H2.4.6Extvalue" _msthash="1817487" _msttexthash="116545" _mstvisible="7"]]
268 )))
269
270 * The First 6 bytes: has fix meanings for every LHT65N.
271 * The 7th byte (EXT #): defines the external sensor model.
272 * 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.)
273
274
275
276
277 === 2.4.1 Decoder in TTN V3 ===
278
279 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.
280
281 Below is the position to put the decoder and LHT65N decoder can be download from here:
282
283
284 [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0 >>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0||_msthash="315253" _msttexthash="3509064" _mstvisible="2"]]
285
286
287 [[image:image-20220522234118-10.png||_mstalt="451464" _mstvisible="3" height="353" width="729"]]
288
289
290
291
292 === 2.4.2 BAT-Battery Info ===
293
294 These two bytes of BAT include the battery state and the actually voltage
295
296 [[image:image-20220523152839-18.png||_mstalt="457613" _mstvisible="3"]]
297
298
299 [[image:image-20220522235639-1.png||_mstalt="431392" _mstvisible="3" height="139" width="727"]]
300
301
302 Check the battery voltage for LHT65N.
303
304 * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
305 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
306
307
308
309
310 === 2.4.3 Built-in Temperature ===
311
312 [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
313
314 * Temperature:  0x0ABB/100=27.47℃
315
316 [[image:image-20220522235639-3.png||_mstalt="432120" _mstvisible="3"]]
317
318 * Temperature:  (0xF5C6-65536)/100=-26.18℃
319
320
321
322
323 === 2.4.4 Built-in Humidity ===
324
325 [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
326
327 * Humidity:    0x025C/10=60.4%
328
329
330
331
332 === 2.4.5 Ext # ===
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 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
343
344
345 [[image:image-20220522235639-5.png||_mstalt="432848" _mstvisible="3"]]
346
347
348 * DS18B20 temp=0x0ADD/100=27.81℃
349
350 The last 2 bytes of data are meaningless
351
352 [[image:image-20220522235639-6.png||_mstalt="433212" _mstvisible="3"]]
353
354
355 * External temperature= (0xF54F-65536)/100=-27.37℃
356
357 The last 2 bytes of data are meaningless
358
359 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
360
361
362
363 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
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 [[image:image-20220523152434-16.png||_mstalt="453921" _mstvisible="3"]]
479
480 * Poll Message Flag:  1: This message is a poll message reply, 0: means this is a normal uplink.
481 * 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.
482 * 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)
483
484
485
486
487 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
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
498
499 == 2.5 Show data on Datacake ==
500
501 (((
502 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:
503 )))
504
505 (((
506
507 )))
508
509 (((
510 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
511 )))
512
513 (((
514 (% 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.
515 )))
516
517 (((
518
519 )))
520
521 (((
522 Add Datacake:
523 )))
524
525
526 [[image:image-20220523000825-7.png||_mstalt="429884" _mstvisible="3" height="262" width="583"]]
527
528
529
530 Select default key as Access Key:
531
532
533 [[image:image-20220523000825-8.png||_mstalt="430248" _mstvisible="3" height="453" width="406"]]
534
535
536 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/||_mstvisible="2"]]) , add LHT65 device.
537
538
539 [[image:image-20220523000825-9.png||_mstalt="430612" _mstvisible="3" height="366" width="392"]]
540
541
542 [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
543
544
545
546 == 2.6 Datalog Feature ==
547
548 (((
549 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.
550 )))
551
552
553
554 === 2.6.1 Ways to get datalog via LoRaWAN ===
555
556 There are two methods:
557
558 1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specify time range.
559 1. Set [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]], LHT65N will wait for ACK for every uplink, when there is no LoRaWAN network, LHT65N will store the sensor data, and it will send all messages after network recover.
560
561
562
563
564 === 2.6.2 Unix TimeStamp ===
565
566
567 LHT65N uses Unix TimeStamp format based on
568
569
570 [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
571
572
573
574 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
575
576 Below is the converter example
577
578 [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
579
580 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
581
582
583
584 === 2.6.3 Set Device Time ===
585
586 (((
587 There are two ways to set device's time:
588 )))
589
590 (((
591 **~1. Through LoRaWAN MAC Command (Default settings)**
592 )))
593
594 (((
595 User need to set SYNCMOD=1 to enable sync time via MAC command.
596 )))
597
598 (((
599 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).
600 )))
601
602 (((
603 (% 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.
604 )))
605
606 (((
607
608 )))
609
610 (((
611 **2. Manually Set Time**
612 )))
613
614 (((
615 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
616 )))
617
618
619
620 === 2.6.4 Poll sensor value ===
621
622 User can poll sensor value based on timestamps from the server. Below is the downlink command.
623
624 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
625
626
627 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.
628
629 For example, downlink command **31 5FC5F350 5FC6 0160 05**
630
631 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
632
633 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
634
635
636
637 === 2.6.5 Datalog Uplink payload ===
638
639 (% _msthash="315267" _msttexthash="2245087" _mstvisible="1" %)
640 The Datalog poll reply uplink will use below payload format.
641
642 (% _mstvisible="1" %)
643 (((
644 (% _mstvisible="2" %)
645 (% _msthash="506080" _msttexthash="451581" _mstvisible="4" %)**Retrieval data payload**
646 )))
647
648 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
649 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 93px;" %)(% _mstvisible="5" %)
650 (((
651 (% _mstvisible="6" %)
652 (((
653 (% _mstvisible="7" %)
654 (% _msthash="2224750" _msttexthash="161122" _mstvisible="9" %)**Size(bytes)**
655 )))
656 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
657 (((
658 (% _mstvisible="6" %)
659 (((
660 (% _mstvisible="7" %)
661 (% _msthash="2224751" _msttexthash="4550" _mstvisible="9" %)**2**
662 )))
663 )))|=(% _mstvisible="4" style="width: 102px;" %)(% _mstvisible="5" %)
664 (((
665 (% _mstvisible="6" %)
666 (((
667 (% _mstvisible="7" %)
668 (% _msthash="2224752" _msttexthash="4550" _mstvisible="9" %)**2**
669 )))
670 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
671 (((
672 (% _mstvisible="6" %)
673 (((
674 (% _mstvisible="7" %)
675 (% _msthash="2224753" _msttexthash="4550" _mstvisible="9" %)**2**
676 )))
677 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
678 (((
679 (% _mstvisible="6" %)
680 (((
681 (% _mstvisible="7" %)
682 (% _msthash="2224754" _msttexthash="4459" _mstvisible="9" %)**1**
683 )))
684 )))|=(% _mstvisible="4" style="width: 48px;" %)(% _mstvisible="5" %)
685 (((
686 (% _mstvisible="6" %)
687 (((
688 (% _mstvisible="7" %)
689 (% _msthash="2224755" _msttexthash="4732" _mstvisible="9" %)**4**
690 )))
691 )))
692 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:93px" %)(% _mstvisible="5" %)
693 (((
694 (% _mstvisible="6" %)
695 (((
696 (% _mstvisible="7" %)
697 (% _msthash="2224756" _msttexthash="60203" _mstvisible="9" %)**Value**
698 )))
699 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
700 (((
701 (% _mstvisible="6" %)
702 (((
703 (% _mstvisible="7" %)
704 [[External sensor data>>||anchor="H2.4.6Extvalue" _msthash="2224757" _msttexthash="386672" _mstvisible="8"]]
705 )))
706 )))|(% _mstvisible="4" style="width:102px" %)(% _mstvisible="5" %)
707 (((
708 (% _mstvisible="6" %)
709 (((
710 (% _mstvisible="7" %)
711 (((
712 (% _mstvisible="8" %)
713 [[Built In>>||anchor="H2.4.3Built-inTemperature" _msthash="2671864" _msttexthash="91065" _mstvisible="9"]]
714 )))
715 )))
716
717 (% _mstvisible="6" %)
718 (((
719 (% _mstvisible="7" %)
720 (((
721 (% _mstvisible="8" %)
722 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2671865" _msttexthash="184041" _mstvisible="9"]]
723 )))
724 )))
725 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
726 (((
727 (% _mstvisible="6" %)
728 (((
729 (% _mstvisible="7" %)
730 (((
731 (% _mstvisible="8" %)
732 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2671866" _msttexthash="105872" _mstvisible="9"]]
733 )))
734 )))
735
736 (% _mstvisible="6" %)
737 (((
738 (% _mstvisible="7" %)
739 (((
740 (% _mstvisible="8" %)
741 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2671867" _msttexthash="117429" _mstvisible="9"]]
742 )))
743 )))
744 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
745 (((
746 (% _mstvisible="6" %)
747 (((
748 (% _msthash="2224758" _msttexthash="390390" _mstvisible="7" %)
749 Poll message flag & Ext
750 )))
751 )))|(% _mstvisible="4" style="width:48px" %)(% _mstvisible="5" %)
752 (((
753 (% _mstvisible="6" %)
754 (((
755 (% _mstvisible="7" %)
756 (((
757 (% _mstvisible="8" %)
758 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2671868" _msttexthash="227175" _mstvisible="9"]]
759 )))
760 )))
761
762 (% _mstvisible="6" %)
763 (((
764 (% _mstvisible="7" %)
765 (((
766 (% _mstvisible="8" %)
767
768 )))
769 )))
770 )))
771
772 (% _mstvisible="1" %)
773 (% _msthash="315268" _msttexthash="390390" _mstvisible="3" %)**Poll message flag & Ext**
774
775 (% _mstvisible="1" %)
776 [[image:image-20220523152208-14.png||_mstalt="452920" _mstvisible="3"]]
777
778 (% _mstvisible="1" %)
779 (((
780 (% _mstvisible="2" %)
781 (((
782 (% _msthash="736723" _msttexthash="2005003" _mstvisible="3" %)
783 (((
784 Poll Message Flag: 1: This message is a poll message reply.
785 )))
786 )))
787 )))
788
789 (% _mstvisible="1" %)
790 * (% _mstvisible="3" %)
791 (((
792 (% _mstvisible="4" %)
793 (((
794 (% _msthash="1197157" _msttexthash="561548" _mstvisible="5" %)
795 (((
796 Poll Message Flag is set to 1.
797 )))
798 )))
799 )))
800 * (% _mstvisible="3" %)
801 (((
802 (% _mstvisible="4" %)
803 (((
804 (% _msthash="1197158" _msttexthash="9284964" _mstvisible="5" %)
805 (((
806 Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
807 )))
808 )))
809 )))
810
811 (% _mstvisible="1" %)
812 (((
813 (% _mstvisible="2" %)
814 (((
815 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
816 (((
817
818 )))
819
820 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
821 (((
822 For example, in US915 band, the max payload for different DR is:
823 )))
824 )))
825 )))
826
827 (% _mstvisible="1" %)
828 (((
829 (% _mstvisible="2" %)
830 (((
831 (% _msthash="736725" _msttexthash="1065532" _mstvisible="3" %)
832 (((
833 a) DR0: max is 11 bytes so one entry of data
834 )))
835 )))
836 )))
837
838 (% _mstvisible="1" %)
839 (((
840 (% _mstvisible="2" %)
841 (((
842 (% _msthash="736726" _msttexthash="3265665" _mstvisible="3" %)
843 (((
844 b) DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
845 )))
846 )))
847 )))
848
849 (% _mstvisible="1" %)
850 (((
851 (% _mstvisible="2" %)
852 (((
853 (% _msthash="736727" _msttexthash="1454115" _mstvisible="3" style="text-align: left;" %)
854 (((
855 c) DR2: total payload includes 11 entries of data
856 )))
857 )))
858 )))
859
860 (% _mstvisible="1" %)
861 (((
862 (% _mstvisible="2" %)
863 (((
864 (% _msthash="736728" _msttexthash="1483924" _mstvisible="3" style="text-align: left;" %)
865 (((
866 d) DR3: total payload includes 22 entries of data.
867 )))
868 )))
869 )))
870
871 (% _mstvisible="1" %)
872 (((
873 (% _mstvisible="2" %)
874 (((
875 (% _msthash="736729" _msttexthash="5848349" _mstvisible="3" style="text-align: left;" %)
876 (((
877 If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0   
878 )))
879 )))
880 )))
881
882
883 (% _mstvisible="1" style="text-align: left;" %)
884 (% _msthash="315269" _msttexthash="104767" _mstvisible="3" %)**Example:**
885
886 (% _msthash="315270" _msttexthash="913822" _mstvisible="1" style="text-align: left;" %)
887 If LHT65N has below data inside Flash:
888
889 (% _mstvisible="1" %)
890 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
891
892 (% _mstvisible="1" %)
893 (((
894 (% _msthash="506081" _msttexthash="1663961" _mstvisible="2" style="text-align: left;" %)
895 If user sends below downlink command: (% _mstvisible="3" style="background-color:yellow" %)3160065F9760066DA705
896 )))
897
898 (% _mstvisible="1" %)
899 (((
900 (% _msthash="506082" _msttexthash="1092494" _mstvisible="2" style="text-align: left;" %)
901 Where : Start time: 60065F97 = time 21/1/19 04:27:03
902 )))
903
904 (% _mstvisible="1" %)
905 (((
906 (% _msthash="506083" _msttexthash="737269" _mstvisible="2" style="text-align: left;" %)
907 Stop time 60066DA7= time 21/1/19 05:27:(% _msthash="903005" _msttexthash="9672" _mstvisible="2" %)03
908 )))
909
910 (% _mstvisible="1" %)
911 (((
912 (% _mstvisible="2" %)
913
914 )))
915
916 (% _mstvisible="1" %)
917 (((
918 (% _msthash="506084" _msttexthash="751218" _mstvisible="2" style="text-align: left;" %)
919 LHT65N will uplink this payload.
920 )))
921
922 (% _mstvisible="1" %)
923 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
924
925 (% _msthash="315271" _msttexthash="12012546" _mstvisible="1" style="text-align: left;" %)
926 (((
927 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
928 )))
929
930 (% _msthash="315237" _msttexthash="1385839" %)
931 (((
932 Where the first 11 bytes is for the first entry:
933 )))
934
935 (% _msthash="315238" _msttexthash="274846" %)
936 (((
937 7FFF089801464160065F97
938 )))
939
940 (% _msthash="315239" _msttexthash="617435" %)
941 (((
942 Ext sensor data=0x7FFF/100=327.67
943 )))
944
945 (% _msthash="315240" _msttexthash="270543" %)
946 (((
947 Temp=0x0898/100=22.00
948 )))
949
950 (% _msthash="315241" _msttexthash="211783" %)
951 (((
952 Hum=0x0146/10=32.6
953 )))
954
955 (% _msthash="315242" _msttexthash="1569776" %)
956 (((
957 poll message flag & Ext=0x41,means reply data,Ext=1
958 )))
959
960 (% _msthash="315243" _msttexthash="1120509" %)
961 (((
962 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
963 )))
964
965
966
967 == 2.7 Alarm Mode ==
968
969 (((
970 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.
971 )))
972
973 (((
974 (% style="color:red" %)Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.
975 )))
976
977 (((
978 **AT COMMAND FOR ALARM MODE:**
979 )))
980
981 (% _mstvisible="1" class="box infomessage" %)
982 (((
983 (((
984 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled)
985 )))
986
987 (((
988 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
989 )))
990
991 (((
992 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
993 )))
994
995 (((
996 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
997 )))
998
999 (((
1000 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1001 )))
1002 )))
1003
1004
1005
1006 == 2.8 LED Indicator ==
1007
1008 The LHT65 has a triple color LED which for easy showing different stage .
1009
1010 While user press ACT button, the LED will work as per LED status with ACT button.
1011
1012 In a normal working state:
1013
1014 * For each uplink, the BLUE LED or RED LED will blink once.
1015 BLUE LED when external sensor is connected.
1016 * RED LED when external sensor is not connected
1017 * For each success downlink, the PURPLE LED will blink once
1018
1019
1020
1021
1022 == 2.9 installation ==
1023
1024 (% _mstvisible="1" %)
1025 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
1026
1027
1028
1029 = 3. Sensors and Accessories =
1030
1031 == 3.1 E2 Extension Cable ==
1032
1033 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1034
1035 1m long breakout cable for LHT65N
1036
1037 [[image:image-20220619092421-3.png||height="371" width="529"]]
1038
1039
1040
1041
1042 == 3.2 E3 Temperature Probe ==
1043
1044
1045 [[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"]]
1046
1047
1048 Temperature sensor with 2 meters cable long
1049
1050 * Resolution: 0.0625 °C
1051 * ±0.5°C accuracy from -10°C to +85°C
1052 * ±2°C accuracy from -55°C to +125°C
1053 * Operating Range: -40 ~~ 125 °C
1054 * Working voltage 2.35v ~~ 5v
1055
1056
1057
1058
1059 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1060
1061 (((
1062 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1063 )))
1064
1065 * (((
1066 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1067 )))
1068
1069 * (((
1070 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1071 )))
1072
1073 (((
1074 There are two kinds of commands to configure LHT65N, they are:
1075 )))
1076
1077 * (((
1078 (% style="color:#4f81bd" %)**General Commands**.
1079 )))
1080
1081 (((
1082 These commands are to configure:
1083 )))
1084
1085 1. (((
1086 General system settings like: uplink interval.
1087 )))
1088 1. (((
1089 LoRaWAN protocol & radio-related commands.
1090 )))
1091
1092 (((
1093 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]]
1094 )))
1095
1096 * (((
1097 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1098 )))
1099
1100 (((
1101 These commands are only valid for LHT65N, as below:
1102 )))
1103
1104
1105 == 4.1 Set Transmit Interval Time ==
1106
1107 Feature: Change LoRaWAN End Node Transmit Interval.
1108
1109 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1110
1111 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
1112
1113
1114 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1115
1116 Format: Command Code (0x01) followed by 3 bytes time value.
1117
1118 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1119
1120 * **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1121
1122 * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1123
1124
1125
1126
1127 == 4.2 Set External Sensor Mode ==
1128
1129 Feature: Change External Sensor Mode.
1130
1131 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1132
1133 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1134
1135
1136 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1137
1138 Total bytes: 2 ~~ 5 bytes
1139
1140 **Example:**
1141
1142 * 0xA201: Set external sensor type to E1
1143
1144 * 0xA209: Same as AT+EXT=9
1145
1146 * 0xA20702003c: Same as AT+SETCNT=60
1147
1148
1149
1150
1151 == 4.3 Enable/Disable uplink Temperature probe ID ==
1152
1153 (((
1154 Feature: If PID is enabled, device will send the temperature probe ID on:
1155 )))
1156
1157 * (((
1158 First Packet after OTAA Join
1159 )))
1160 * (((
1161 Every 24 hours since the first packet.
1162 )))
1163
1164 (((
1165 PID is default set to disable (0)
1166 )))
1167
1168 (% style="color:#4f81bd" %)**AT Command:**
1169
1170 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1171
1172
1173 (% style="color:#4f81bd" %)**Downlink Command:**
1174
1175 * **0xA800**  **~-~->** AT+PID=0
1176 * **0xA801**     **~-~->** AT+PID=1
1177
1178
1179
1180
1181 == 4.4 Set Password ==
1182
1183 Feature: Set device password, max 9 digits
1184
1185 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1186
1187 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1188
1189
1190 (% style="color:#4f81bd" %)**Downlink Command:**
1191
1192 No downlink command for this feature.
1193
1194
1195
1196 == 4.5 Quit AT Command ==
1197
1198 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1199
1200 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1201
1202 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1203
1204
1205 (% style="color:#4f81bd" %)**Downlink Command:**
1206
1207 No downlink command for this feature.
1208
1209
1210
1211 == 4.6 Set to sleep mode ==
1212
1213 Feature: Set device to sleep mode
1214
1215 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1216 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1217
1218 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1219
1220 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1221
1222
1223 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1224
1225 * There is no downlink command to set to Sleep mode.
1226
1227
1228
1229
1230 == 4.7 Set system time ==
1231
1232 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1233
1234 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1235
1236 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1237
1238
1239 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1240
1241 0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1242
1243
1244
1245 == 4.8 Set Time Sync Mode ==
1246
1247 (((
1248 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1249 )))
1250
1251 (((
1252 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.
1253 )))
1254
1255 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1256
1257 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1258
1259
1260 (% style="color:#4f81bd" %)**Downlink Command:**
1261
1262 0x28 01 ~/~/ Same As AT+SYNCMOD=1
1263 0x28 00 ~/~/ Same As AT+SYNCMOD=0
1264
1265
1266
1267 == 4.9 Set Time Sync Interval ==
1268
1269 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1270
1271 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1272
1273 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1274
1275
1276 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1277
1278 **0x29 0A** ~/~/ Same as AT+SYNCTDC=0x0A
1279
1280
1281
1282 == 4.10 Print data entries base on page. ==
1283
1284 Feature: Print the sector data from start page to stop page (max is 416 pages).
1285
1286 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1287
1288 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1289
1290
1291 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1292
1293 No downlink commands for feature
1294
1295
1296
1297 == 4.11 Print last few data entries. ==
1298
1299 Feature: Print the last few data entries
1300
1301 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1302
1303 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1304
1305
1306 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1307
1308 No downlink commands for feature
1309
1310
1311
1312 == 4.12 Clear Flash Record ==
1313
1314 Feature: Clear flash storage for data log feature.
1315
1316
1317 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1318
1319 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1320
1321
1322 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1323
1324 * Example: 0xA301 ~/~/Same as AT+CLRDTA
1325
1326
1327
1328
1329 == 4.13 Auto Send None-ACK messages ==
1330
1331 (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
1332 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.
1333
1334 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1335
1336 (% _msthash="315396" _msttexthash="734682" _mstvisible="1" %)
1337 The default factory setting is 0
1338
1339 (% _mstvisible="1" border="1" style="background-color:#ffffcc; color:green; width:450px" %)
1340 (% _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**
1341 (% _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
1342
1343 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1344
1345 * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1346
1347
1348
1349
1350 = 5. Battery & How to replace =
1351
1352 == 5.1 Battery Type ==
1353
1354 (((
1355 (((
1356 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.
1357 )))
1358 )))
1359
1360 (((
1361
1362 )))
1363
1364 (((
1365 (((
1366 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1367 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1368 )))
1369 )))
1370
1371 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1372
1373
1374 == 5.2 Replace Battery ==
1375
1376 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.
1377
1378 [[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"]]
1379
1380
1381 == 5.3 Battery Life Analyze ==
1382
1383 (((
1384 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:
1385 [[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]]
1386 )))
1387
1388 (((
1389
1390 )))
1391
1392 (((
1393 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]]
1394 )))
1395
1396
1397
1398 = 6. FAQ =
1399
1400 == 6.1 How to use AT Command? ==
1401
1402 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.
1403
1404 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1405
1406
1407 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1408
1409 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1410 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1411 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1412 * (% style="background-color:yellow" %)**USB to TTL 3.3V <~-~-> D-**
1413
1414 (((
1415 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.
1416 )))
1417
1418
1419 Input password and ATZ to activate LHT65N,As shown below:
1420
1421 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1422
1423
1424 (% _msthash="506066" _msttexthash="544869" %)
1425 AT Command List is as below:
1426
1427 (% _msthash="506067" _msttexthash="361920" %)
1428 AT+<CMD>? :  Help on <CMD>
1429
1430 (% _msthash="506068" _msttexthash="243061" %)
1431 AT+<CMD> :  Run <CMD>
1432
1433 (% _msthash="506069" _msttexthash="704197" %)
1434 AT+<CMD>=<value> :  Set the value
1435
1436 (% _msthash="506070" _msttexthash="455676" %)
1437 AT+<CMD>=? :  Get the value
1438
1439 (% _msthash="506071" _msttexthash="670553" %)
1440 AT+DEBUG:  Set more info output
1441
1442 (% _msthash="506072" _msttexthash="485888" %)
1443 ATZ:  Trig a reset of the MCU
1444
1445 (% _msthash="506073" _msttexthash="2068872" %)
1446 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1447
1448 (% _msthash="506074" _msttexthash="689169" %)
1449 AT+DEUI:  Get or Set the Device EUI
1450
1451 (% _msthash="506075" _msttexthash="960414" %)
1452 AT+DADDR:  Get or Set the Device Address
1453
1454 (% _msthash="506076" _msttexthash="1079897" %)
1455 AT+APPKEY:  Get or Set the Application Key
1456
1457 (% _msthash="506077" _msttexthash="1326143" %)
1458 AT+NWKSKEY:  Get or Set the Network Session Key
1459
1460 (% _msthash="506078" _msttexthash="1573000" %)
1461 AT+APPSKEY:  Get or Set the Application Session Key
1462
1463 (% _msthash="506079" _msttexthash="1041729" %)
1464 AT+APPEUI:  Get or Set the Application EUI
1465
1466 (% _msthash="506080" _msttexthash="2104206" %)
1467 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1468
1469 (% _msthash="506081" _msttexthash="3369288" %)
1470 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1471
1472 (% _msthash="506082" _msttexthash="1894529" %)
1473 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1474
1475 (% _msthash="506083" _msttexthash="3864172" %)
1476 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1477
1478 (% _msthash="506084" _msttexthash="1712204" %)
1479 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1480
1481 (% _msthash="506085" _msttexthash="1281202" %)
1482 AT+RX2FQ:  Get or Set the Rx2 window frequency
1483
1484 (% _msthash="506086" _msttexthash="2796781" %)
1485 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1486
1487 (% _msthash="506087" _msttexthash="3285165" %)
1488 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1489
1490 (% _msthash="506088" _msttexthash="3286179" %)
1491 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1492
1493 (% _msthash="506089" _msttexthash="4703803" %)
1494 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1495
1496 (% _msthash="506090" _msttexthash="4704999" %)
1497 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1498
1499 (% _msthash="506091" _msttexthash="1528683" %)
1500 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1501
1502 (% _msthash="506092" _msttexthash="757185" %)
1503 AT+NWKID:  Get or Set the Network ID
1504
1505 (% _msthash="506093" _msttexthash="1156597" %)
1506 AT+FCU:  Get or Set the Frame Counter Uplink
1507
1508 (% _msthash="506094" _msttexthash="1273987" %)
1509 AT+FCD:  Get or Set the Frame Counter Downlink
1510
1511 (% _msthash="506095" _msttexthash="859222" %)
1512 AT+CLASS:  Get or Set the Device Class
1513
1514 (% _msthash="506096" _msttexthash="384852" %)
1515 AT+JOIN:  Join network
1516
1517 (% _msthash="506097" _msttexthash="548626" %)
1518 AT+NJS:  Get the join status
1519
1520 (% _msthash="506098" _msttexthash="2546206" %)
1521 AT+SENDB:  Send hexadecimal data along with the application port
1522
1523 (% _msthash="506099" _msttexthash="1932307" %)
1524 AT+SEND:  Send text data along with the application port
1525
1526 (% _msthash="506100" _msttexthash="3560557" %)
1527 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1528
1529 (% _msthash="506101" _msttexthash="1429701" %)
1530 AT+RECV:  Print last received data in raw format
1531
1532 (% _msthash="506102" _msttexthash="1735981" %)
1533 AT+VER:  Get current image version and Frequency Band
1534
1535 (% _msthash="506103" _msttexthash="1189474" %)
1536 AT+CFM:  Get or Set the confirmation mode (0-1)
1537
1538 (% _msthash="506104" _msttexthash="1718210" %)
1539 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1540
1541 (% _msthash="506105" _msttexthash="1339403" %)
1542 AT+SNR:  Get the SNR of the last received packet
1543
1544 (% _msthash="506106" _msttexthash="1452009" %)
1545 AT+RSSI:  Get the RSSI of the last received packet
1546
1547 (% _msthash="506107" _msttexthash="2768142" %)
1548 AT+TDC:  Get or set the application data transmission interval in ms
1549
1550 (% _msthash="506108" _msttexthash="1083914" %)
1551 AT+PORT:  Get or set the application port
1552
1553 (% _msthash="506109" _msttexthash="622440" %)
1554 AT+DISAT:  Disable AT commands
1555
1556 (% _msthash="506110" _msttexthash="868361" %)
1557 AT+PWORD: Set password, max 9 digits
1558
1559 (% _msthash="506111" _msttexthash="2210299" %)
1560 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1561
1562 (% _msthash="506112" _msttexthash="2113462" %)
1563 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1564
1565 (% _msthash="506113" _msttexthash="2087423" %)
1566 AT+PDTA:  Print the sector data from start page to stop page
1567
1568 (% _msthash="506114" _msttexthash="1063127" %)
1569 AT+PLDTA:  Print the last few sets of data
1570
1571 (% _msthash="506115" _msttexthash="1999426" %)
1572 AT+CLRDTA:  Clear the storage, record position back to 1st
1573
1574 (% _msthash="506116" _msttexthash="442130" %)
1575 AT+SLEEP:  Set sleep mode
1576
1577 (% _msthash="506117" _msttexthash="1080222" %)
1578 AT+EXT:  Get or Set external sensor model
1579
1580 (% _msthash="506118" _msttexthash="1309490" %)
1581 AT+BAT:  Get the current battery voltage in mV
1582
1583 (% _msthash="506119" _msttexthash="813891" %)
1584 AT+CFG:  Print all configurations
1585
1586 (% _msthash="506120" _msttexthash="551707" %)
1587 AT+WMOD:  Get or Set Work Mode
1588
1589 (% _msthash="506121" _msttexthash="2631499" %)
1590 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1591
1592 (% _msthash="506122" _msttexthash="3907150" %)
1593 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1594
1595 (% _msthash="506123" _msttexthash="854620" %)
1596 AT+SETCNT:  Set the count at present
1597
1598 (% _msthash="506124" _msttexthash="2554877" %)
1599 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1600
1601 (% _msthash="506125" _msttexthash="771849" %)
1602 AT+RPL:  Get or set response level
1603
1604 (% _msthash="506126" _msttexthash="1484314" %)
1605 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1606
1607 (% _msthash="506127" _msttexthash="741728" %)
1608 AT+LEAPSEC:  Get or Set Leap Second
1609
1610 (% _msthash="506128" _msttexthash="1694017" %)
1611 AT+SYNCMOD:  Get or Set time synchronization method
1612
1613 (% _msthash="506129" _msttexthash="2235948" %)
1614 AT+SYNCTDC:  Get or set time synchronization interval in day
1615
1616 (% _msthash="506130" _msttexthash="425542" %)
1617 AT+PID:  Get or set the PID
1618
1619
1620 == 6.2 Where to use AT commands and Downlink commands ==
1621
1622 (% _msthash="506131" _msttexthash="14585714" %)
1623 AT commands：
1624
1625 [[image:image-20220620153708-1.png||height="603" width="723"]]
1626
1627 (% _msthash="506132" _msttexthash="337922" %)
1628 Downlink commands:
1629
1630
1631 (% _msthash="506133" _msttexthash="33046" %)
1632 **TTN:**
1633
1634 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1635
1636
1637 (% _msthash="506134" _msttexthash="11113791" %)
1638 **Helium：**
1639
1640 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1641
1642
1643 (% _msthash="506135" _msttexthash="4159844" %)
1644 **Chirpstack:The downlink window will not be displayed until the network is accessed**
1645
1646 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1647
1648 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1649
1650
1651 (% _msthash="506136" _msttexthash="39286" %)
1652 **Aws:**
1653
1654 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1655
1656
1657
1658 == 6.3 How to change the uplink interval？ ==
1659
1660 [[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"]]
1661
1662
1663
1664 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1665
1666 [[image:image-20220615153355-1.png]]
1667
1668 [[image:1655802313617-381.png]]
1669
1670
1671 (((
1672 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.
1673 )))
1674
1675
1676 Input password and ATZ to activate LHT65N,As shown below:
1677
1678 [[image:image-20220615154519-3.png||height="672" width="807"]]
1679
1680
1681
1682 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1683
1684
1685 [[image:image-20220615153355-1.png]]
1686
1687
1688 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1689
1690 [[image:image-20220615170542-5.png]]
1691
1692
1693 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1694
1695 (% _msthash="506146" _msttexthash="52173160" %)
1696 First connect the four lines；(% style="display:none" %)
1697
1698 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1699
1700
1701 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1702
1703 [[image:image-20220621170938-2.png]]
1704
1705
1706 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1707
1708 [[image:image-20220615171334-6.png]]
1709
1710
1711 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1712
1713
1714 When this interface appears, it indicates that the download has been completed.
1715
1716 [[image:image-20220620160723-8.png]]
1717
1718
1719 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1720
1721
1722
1723 = 7. Order Info =
1724
1725
1726 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
1727
1728 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1729
1730 (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1731
1732 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1733
1734 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1735
1736 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1737
1738 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1739
1740 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1741
1742 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1743
1744 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1745
1746 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1747
1748 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1749
1750
1751
1752
1753 = 8. Packing Info =
1754
1755
1756 **Package Includes**:
1757
1758 * LHT65N Temperature & Humidity Sensor x 1
1759 * Optional external sensor
1760
1761 **Dimension and weight**:
1762
1763 * Device Size:  10 x 10 x 3.5 cm
1764 * Device Weight: 120.5g
1765
1766
1767
1768
1769 = 9. Reference material =
1770
1771 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1772
1773
1774
1775
1776 = 10. FCC Warning =
1777
1778 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1779
1780 (1) This device may not cause harmful interference；
1781
1782 (2) this device must accept any interference received, including interference that may cause undesired operation.