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Version 170.34 by Xiaoling on 2022/06/22 11:29
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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 == 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 == 1.3 Specification ==
63
64
65 **Built-in Temperature Sensor:**
66
67 * Resolution: 0.01 °C
68 * Accuracy Tolerance : Typ ±0.3 °C
69 * Long Term Drift: < 0.02 °C/yr
70 * Operating Range: -40 ~~ 85 °C
71
72 **Built-in Humidity Sensor:**
73
74 * Resolution: 0.04 %RH
75 * Accuracy Tolerance : Typ ±3 %RH
76 * Long Term Drift: < 0.02 °C/yr
77 * Operating Range: 0 ~~ 96 %RH
78
79 **External Temperature Sensor:**
80
81 * Resolution: 0.0625 °C
82 * ±0.5°C accuracy from -10°C to +85°C
83 * ±2°C accuracy from -55°C to +125°C
84 * Operating Range: -55 °C ~~ 125 °C
85
86
87 = 2. Connect LHT65N to IoT Server =
88
89 == 2.1 How does LHT65N work? ==
90
91 (((
92 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.
93 )))
94
95 (((
96 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.
97 )))
98
99
100 == 2.2 How to Activate LHT65N? ==
101
102 (((
103 The LHT65N has two working modes:
104 )))
105
106 * (((
107 (% 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.
108 )))
109 * (((
110 (% 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. 
111 )))
112
113 (((
114 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
115 )))
116
117
118 [[image:image-20220515123819-1.png||_mstalt="430742" _mstvisible="3" height="379" width="317"]]
119
120 [[image:image-20220525110604-2.png||_mstalt="427531" _mstvisible="3"]]
121
122
123
124 == 2.3 Example to join LoRaWAN network ==
125
126 (% _msthash="315240" _msttexthash="9205482" _mstvisible="1" class="wikigeneratedid" %)
127 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.
128
129 (% _mstvisible="1" class="wikigeneratedid" %)
130 [[image:image-20220522232442-1.png||_mstalt="427830" _mstvisible="3" height="387" width="648"]]
131
132
133 (((
134 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:
135 )))
136
137
138
139 === 2.3.1 Step 1: Create Device n TTN ===
140
141 (((
142 Create a device in TTN V3 with the OTAA keys from LHT65N.
143 )))
144
145 (((
146 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
147 )))
148
149 [[image:image-20220617150003-1.jpeg]]
150
151 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
152
153 Add APP EUI in the application.
154
155
156 [[image:image-20220522232916-3.png||_mstalt="430495" _mstvisible="3"]]
157
158
159 [[image:image-20220522232932-4.png||_mstalt="430157" _mstvisible="3"]]
160
161
162 [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
163
164
165 Note: LHT65N use same payload as LHT65.
166
167
168 [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
169
170
171 Input APP EUI,  APP KEY and DEV EUI:
172
173
174 [[image:image-20220522233118-7.png||_mstalt="430430" _mstvisible="3"]]
175
176
177
178
179 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
180
181 (((
182 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.
183 )))
184
185 [[image:image-20220522233300-8.png||_mstalt="428389" _mstvisible="3" height="219" width="722"]]
186
187
188
189
190 == 2.4 Uplink Payload ==
191
192 (((
193 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.
194 )))
195
196 (((
197 After each uplink, the (% _mstvisible="3" style="color:blue" %)**BLUE LED**(%%) will blink once.
198 )))
199
200 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:426px" %)
201 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 97px;" %)(% _mstvisible="5" %)
202 (((
203 (% _mstvisible="6" %)
204 (% _msthash="1817478" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
205 )))|=(% _mstvisible="4" style="width: 39px;" %)(% _mstvisible="5" %)
206 (((
207 (% _mstvisible="6" %)
208 (% _msthash="1817479" _msttexthash="4550" _mstvisible="8" %)**2**
209 )))|=(% _mstvisible="4" style="width: 100px;" %)(% _mstvisible="5" %)
210 (((
211 (% _mstvisible="6" %)
212 (% _msthash="1817480" _msttexthash="4550" _mstvisible="8" %)**2**
213 )))|=(% _mstvisible="4" style="width: 77px;" %)(% _mstvisible="5" %)
214 (((
215 (% _mstvisible="6" %)
216 (% _msthash="1817481" _msttexthash="4550" _mstvisible="8" %)**2**
217 )))|=(% _mstvisible="4" style="width: 47px;" %)(% _mstvisible="5" %)
218 (((
219 (% _mstvisible="6" %)
220 (% _msthash="1817482" _msttexthash="4459" _mstvisible="8" %)**1**
221 )))|=(% _mstvisible="4" style="width: 51px;" %)(% _mstvisible="5" %)
222 (((
223 (% _mstvisible="6" %)
224 (% _msthash="1817483" _msttexthash="4732" _mstvisible="8" %)**4**
225 )))
226 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:97px" %)(% _mstvisible="5" %)
227 (((
228 (% _mstvisible="6" %)
229 (% _msthash="1817484" _msttexthash="60203" _mstvisible="8" %)**Value**
230 )))|(% _mstvisible="4" style="width:39px" %)(% _mstvisible="5" %)
231 (((
232 (% _mstvisible="6" %)
233 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo" _msthash="1817485" _msttexthash="22594" _mstvisible="7"]]
234 )))|(% _mstvisible="4" style="width:100px" %)(% _mstvisible="5" %)
235 (((
236 (% _mstvisible="6" %)
237 (((
238 (% _mstvisible="7" %)
239 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224742" _msttexthash="405769" _mstvisible="8"]]
240 )))
241 )))|(% _mstvisible="4" style="width:77px" %)(% _mstvisible="5" %)
242 (((
243 (% _mstvisible="6" %)
244 (((
245 (% _mstvisible="7" %)
246 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2224743" _msttexthash="105872" _mstvisible="8"]]
247 )))
248
249 (% _mstvisible="6" %)
250 (((
251 (% _mstvisible="7" %)
252 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224744" _msttexthash="117429" _mstvisible="8"]]
253 )))
254 )))|(% _mstvisible="4" style="width:47px" %)(% _mstvisible="5" %)
255 (((
256 (% _mstvisible="6" %)
257 [[Ext>>||anchor="H2.4.5Ext23" _msthash="1817486" _msttexthash="32331" _mstvisible="7"]] #
258 )))|(% _mstvisible="4" style="width:51px" %)(% _mstvisible="5" %)
259 (((
260 (% _mstvisible="6" %)
261 [[Ext value>>||anchor="H2.4.6Extvalue" _msthash="1817487" _msttexthash="116545" _mstvisible="7"]]
262 )))
263
264 * The First 6 bytes: has fix meanings for every LHT65N.
265 * The 7th byte (EXT #): defines the external sensor model.
266 * 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.)
267
268
269
270
271
272 === 2.4.1 Decoder in TTN V3 ===
273
274 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.
275
276 Below is the position to put the decoder and LHT65N decoder can be download from here:
277
278
279 [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0 >>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0||_msthash="315253" _msttexthash="3509064" _mstvisible="2"]]
280
281
282 [[image:image-20220522234118-10.png||_mstalt="451464" _mstvisible="3" height="353" width="729"]]
283
284
285
286
287 === 2.4.2 BAT-Battery Info ===
288
289 These two bytes of BAT include the battery state and the actually voltage
290
291 [[image:image-20220523152839-18.png||_mstalt="457613" _mstvisible="3"]]
292
293
294 [[image:image-20220522235639-1.png||_mstalt="431392" _mstvisible="3" height="139" width="727"]]
295
296
297 Check the battery voltage for LHT65N.
298
299 * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
300 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
301
302
303
304
305
306 === 2.4.3 Built-in Temperature ===
307
308 [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
309
310 * Temperature:  0x0ABB/100=27.47℃
311
312 [[image:image-20220522235639-3.png||_mstalt="432120" _mstvisible="3"]]
313
314 * Temperature:  (0xF5C6-65536)/100=-26.18℃
315
316
317
318
319
320 === 2.4.4 Built-in Humidity ===
321
322 [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
323
324 * Humidity:    0x025C/10=60.4%
325
326
327
328
329
330 === 2.4.5 Ext # ===
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 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
341
342
343 [[image:image-20220522235639-5.png||_mstalt="432848" _mstvisible="3"]]
344
345
346 * DS18B20 temp=0x0ADD/100=27.81℃
347
348 The last 2 bytes of data are meaningless
349
350 [[image:image-20220522235639-6.png||_mstalt="433212" _mstvisible="3"]]
351
352
353 * External temperature= (0xF54F-65536)/100=-27.37℃
354
355 The last 2 bytes of data are meaningless
356
357 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
358
359
360
361 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
362
363 (((
364 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:
365 )))
366
367 (((
368
369 )))
370
371 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
372 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 96px;" %)(% _mstvisible="5" %)
373 (((
374 (% _mstvisible="6" %)
375 (% _msthash="1817488" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
376 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
377 (((
378 (% _mstvisible="6" %)
379 (% _msthash="1817489" _msttexthash="4550" _mstvisible="8" %)**2**
380 )))|=(% _mstvisible="4" style="width: 99px;" %)(% _mstvisible="5" %)
381 (((
382 (% _mstvisible="6" %)
383 (% _msthash="1817490" _msttexthash="4550" _mstvisible="8" %)**2**
384 )))|=(% _mstvisible="4" style="width: 132px;" %)(% _mstvisible="5" %)
385 (((
386 (% _mstvisible="6" %)
387 (% _msthash="1817491" _msttexthash="4550" _mstvisible="8" %)**2**
388 )))|=(% _mstvisible="4" style="width: 54px;" %)(% _mstvisible="5" %)
389 (((
390 (% _mstvisible="6" %)
391 (% _msthash="1817492" _msttexthash="4459" _mstvisible="8" %)**1**
392 )))|=(% _mstvisible="4" style="width: 64px;" %)(% _mstvisible="5" %)
393 (((
394 (% _mstvisible="6" %)
395 (% _msthash="1817493" _msttexthash="4732" _mstvisible="8" %)**4**
396 )))
397 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:96px" %)(% _mstvisible="5" %)
398 (((
399 (% _mstvisible="6" %)
400 (% _msthash="1817494" _msttexthash="60203" _mstvisible="8" %)**Value**
401 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
402 (((
403 (% _mstvisible="6" %)
404 [[External temperature>>||anchor="H4.2SetExternalSensorMode" _msthash="1817495" _msttexthash="426517" _mstvisible="7"]]
405 )))|(% _mstvisible="4" style="width:99px" %)(% _mstvisible="5" %)
406 (((
407 (% _mstvisible="6" %)
408 (((
409 (% _mstvisible="7" %)
410 [[Built-In>>||anchor="H2.4.3Built-inTemperature" _msthash="2224745" _msttexthash="100464" _mstvisible="8"]]
411 )))
412
413 (% _mstvisible="6" %)
414 (((
415 (% _mstvisible="7" %)
416 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224746" _msttexthash="184041" _mstvisible="8"]]
417 )))
418 )))|(% _mstvisible="4" style="width:132px" %)(% _mstvisible="5" %)
419 (((
420 (% _mstvisible="6" %)
421 (((
422 (% _msthash="2224747" _msttexthash="136331" _mstvisible="7" %)
423 BAT Status &
424 )))
425
426 (% _mstvisible="6" %)
427 (((
428 (% _mstvisible="7" %)
429 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224748" _msttexthash="311181" _mstvisible="8"]]
430 )))
431 )))|(% _mstvisible="4" style="width:54px" %)(% _mstvisible="5" %)
432 (((
433 (% _msthash="1817496" _msttexthash="147225" _mstvisible="6" %)
434 Status & Ext
435 )))|(% _mstvisible="4" style="width:64px" %)(% _mstvisible="5" %)
436 (((
437 (% _mstvisible="6" %)
438 (((
439 (% _mstvisible="7" %)
440 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2224749" _msttexthash="227175" _mstvisible="8"]]
441 )))
442 )))
443
444 (% _mstvisible="1" %)
445 * (% _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**
446
447 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:469px" %)
448 (% _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]
449 (% _mstvisible="3" %)|(% _msthash="1230921" _msttexthash="60203" _mstvisible="4" style="width:65px" %)Value|(% _mstvisible="4" style="width:267px" %)(% _mstvisible="5" %)
450 (((
451 (% _msthash="1817497" _msttexthash="128427" _mstvisible="6" %)
452 BAT Status
453
454 (% _msthash="1817498" _msttexthash="472784" _mstvisible="6" %)
455 00(b): Ultra Low ( BAT <= 2.50v)
456
457 (% _msthash="1817499" _msttexthash="483678" _mstvisible="6" %)
458 01(b): Low  (2.50v <=BAT <= 2.55v)
459
460 (% _msthash="1817500" _msttexthash="440791" _mstvisible="6" %)
461 10(b): OK   (2.55v <= BAT <=2.65v)
462
463 (% _msthash="1817501" _msttexthash="334191" _mstvisible="6" %)
464 11(b): Good   (BAT >= 2.65v)
465 )))|(% _mstvisible="4" style="width:134px" %)(% _mstvisible="5" %)
466 (((
467 (% _mstvisible="6" %)
468 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="1817502" _msttexthash="311181" _mstvisible="7"]]
469
470 (% _mstvisible="6" %)
471
472 )))
473
474 * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
475
476 [[image:image-20220523152434-16.png||_mstalt="453921" _mstvisible="3"]]
477
478 * Poll Message Flag:  1: This message is a poll message reply, 0: means this is a normal uplink.
479 * 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.
480 * 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)
481
482
483
484
485
486 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
487
488 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
489
490 be used to power the external ADC sensor; user can control the power on time for this
491
492 sensor by setting:
493
494 AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)Time to power this sensor, from 0 ~~ 65535ms
495
496
497
498 == 2.5 Show data on Datacake ==
499
500 (((
501 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:
502 )))
503
504 (((
505
506 )))
507
508 (((
509 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
510 )))
511
512 (((
513 (% 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.
514 )))
515
516 (((
517
518 )))
519
520 (((
521 Add Datacake:
522 )))
523
524
525 [[image:image-20220523000825-7.png||_mstalt="429884" _mstvisible="3" height="262" width="583"]]
526
527
528
529 Select default key as Access Key:
530
531
532 [[image:image-20220523000825-8.png||_mstalt="430248" _mstvisible="3" height="453" width="406"]]
533
534
535 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/||_mstvisible="2"]]) , add LHT65 device.
536
537
538 [[image:image-20220523000825-9.png||_mstalt="430612" _mstvisible="3" height="366" width="392"]]
539
540
541 [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
542
543
544
545 == 2.6 Datalog Feature ==
546
547 (((
548 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.
549 )))
550
551
552
553 === 2.6.1 Ways to get datalog via LoRaWAN ===
554
555 There are two methods:
556
557 1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specify time range.
558 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.
559
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
1023 == 2.9 installation ==
1024
1025 (% _mstvisible="1" %)
1026 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
1027
1028
1029
1030 = 3. Sensors and Accessories =
1031
1032 == 3.1 E2 Extension Cable ==
1033
1034 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1035
1036 1m long breakout cable for LHT65N
1037
1038 [[image:image-20220619092421-3.png||height="371" width="529"]]
1039
1040
1041
1042
1043 == 3.2 E3 Temperature Probe ==
1044
1045
1046 [[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"]]
1047
1048
1049 Temperature sensor with 2 meters cable long
1050
1051 * Resolution: 0.0625 °C
1052 * ±0.5°C accuracy from -10°C to +85°C
1053 * ±2°C accuracy from -55°C to +125°C
1054 * Operating Range: -40 ~~ 125 °C
1055 * Working voltage 2.35v ~~ 5v
1056
1057
1058
1059
1060
1061 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1062
1063 (((
1064 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1065 )))
1066
1067 * (((
1068 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1069 )))
1070
1071 * (((
1072 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1073 )))
1074
1075 (((
1076 There are two kinds of commands to configure LHT65N, they are:
1077 )))
1078
1079 * (((
1080 (% style="color:#4f81bd" %)**General Commands**.
1081 )))
1082
1083 (((
1084 These commands are to configure:
1085 )))
1086
1087 1. (((
1088 General system settings like: uplink interval.
1089 )))
1090 1. (((
1091 LoRaWAN protocol & radio-related commands.
1092 )))
1093
1094 (((
1095 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]]
1096 )))
1097
1098 * (((
1099 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1100 )))
1101
1102 (((
1103 These commands are only valid for LHT65N, as below:
1104 )))
1105
1106
1107 == 4.1 Set Transmit Interval Time ==
1108
1109 Feature: Change LoRaWAN End Node Transmit Interval.
1110
1111 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1112
1113 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
1114
1115
1116 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1117
1118 Format: Command Code (0x01) followed by 3 bytes time value.
1119
1120 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1121
1122 * **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1123
1124 * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1125
1126
1127
1128
1129
1130 == 4.2 Set External Sensor Mode ==
1131
1132 Feature: Change External Sensor Mode.
1133
1134 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1135
1136 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1137
1138
1139 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1140
1141 Total bytes: 2 ~~ 5 bytes
1142
1143 **Example:**
1144
1145 * 0xA201: Set external sensor type to E1
1146
1147 * 0xA209: Same as AT+EXT=9
1148
1149 * 0xA20702003c: Same as AT+SETCNT=60
1150
1151
1152
1153
1154
1155 == 4.3 Enable/Disable uplink Temperature probe ID ==
1156
1157 (((
1158 Feature: If PID is enabled, device will send the temperature probe ID on:
1159 )))
1160
1161 * (((
1162 First Packet after OTAA Join
1163 )))
1164 * (((
1165 Every 24 hours since the first packet.
1166 )))
1167
1168 (((
1169 PID is default set to disable (0)
1170 )))
1171
1172 (% style="color:#4f81bd" %)**AT Command:**
1173
1174 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1175
1176
1177 (% style="color:#4f81bd" %)**Downlink Command:**
1178
1179 * **0xA800**  **~-~->** AT+PID=0
1180 * **0xA801**     **~-~->** AT+PID=1
1181
1182
1183
1184
1185
1186 == 4.4 Set Password ==
1187
1188 Feature: Set device password, max 9 digits
1189
1190 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1191
1192 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1193
1194
1195 (% style="color:#4f81bd" %)**Downlink Command:**
1196
1197 No downlink command for this feature.
1198
1199
1200
1201 == 4.5 Quit AT Command ==
1202
1203 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1204
1205 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1206
1207 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1208
1209
1210 (% style="color:#4f81bd" %)**Downlink Command:**
1211
1212 No downlink command for this feature.
1213
1214
1215
1216 == 4.6 Set to sleep mode ==
1217
1218 Feature: Set device to sleep mode
1219
1220 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1221 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1222
1223 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1224
1225 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1226
1227
1228 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1229
1230 * There is no downlink command to set to Sleep mode.
1231
1232
1233
1234
1235
1236 == 4.7 Set system time ==
1237
1238 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1239
1240 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1241
1242 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1243
1244
1245 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1246
1247 0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1248
1249
1250
1251 == 4.8 Set Time Sync Mode ==
1252
1253 (((
1254 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1255 )))
1256
1257 (((
1258 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.
1259 )))
1260
1261 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1262
1263 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1264
1265
1266 (% style="color:#4f81bd" %)**Downlink Command:**
1267
1268 0x28 01 ~/~/ Same As AT+SYNCMOD=1
1269 0x28 00 ~/~/ Same As AT+SYNCMOD=0
1270
1271
1272
1273 == 4.9 Set Time Sync Interval ==
1274
1275 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1276
1277 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1278
1279 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1280
1281
1282 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1283
1284 **0x29 0A** ~/~/ Same as AT+SYNCTDC=0x0A
1285
1286
1287
1288 == 4.10 Print data entries base on page. ==
1289
1290 Feature: Print the sector data from start page to stop page (max is 416 pages).
1291
1292 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1293
1294 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1295
1296
1297 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1298
1299 No downlink commands for feature
1300
1301
1302
1303 == 4.11 Print last few data entries. ==
1304
1305 Feature: Print the last few data entries
1306
1307 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1308
1309 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1310
1311
1312 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1313
1314 No downlink commands for feature
1315
1316
1317
1318 == 4.12 Clear Flash Record ==
1319
1320 Feature: Clear flash storage for data log feature.
1321
1322
1323 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1324
1325 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1326
1327
1328 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1329
1330 * Example: 0xA301 ~/~/Same as AT+CLRDTA
1331
1332
1333
1334
1335
1336 == 4.13 Auto Send None-ACK messages ==
1337
1338 (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
1339 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.
1340
1341 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1342
1343 (% _msthash="315396" _msttexthash="734682" _mstvisible="1" %)
1344 The default factory setting is 0
1345
1346 (% _mstvisible="1" border="1" style="background-color:#ffffcc; color:green; width:450px" %)
1347 (% _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**
1348 (% _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
1349
1350 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1351
1352 * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1353
1354
1355
1356
1357
1358 = 5. Battery & How to replace =
1359
1360 == 5.1 Battery Type ==
1361
1362 (((
1363 (((
1364 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.
1365 )))
1366 )))
1367
1368 (((
1369
1370 )))
1371
1372 (((
1373 (((
1374 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1375 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1376 )))
1377 )))
1378
1379 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1380
1381
1382 == 5.2 Replace Battery ==
1383
1384 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.
1385
1386 [[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"]]
1387
1388
1389 == 5.3 Battery Life Analyze ==
1390
1391 (((
1392 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:
1393 [[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]]
1394 )))
1395
1396 (((
1397
1398 )))
1399
1400 (((
1401 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]]
1402 )))
1403
1404
1405
1406 = 6. FAQ =
1407
1408 == 6.1 How to use AT Command? ==
1409
1410 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.
1411
1412 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1413
1414
1415 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1416
1417 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1418 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1419 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1420 * (% style="background-color:yellow" %)**USB to TTL 3.3V <~-~-> D-**
1421
1422
1423 (((
1424 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.
1425 )))
1426
1427
1428 Input password and ATZ to activate LHT65N,As shown below:
1429
1430 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1431
1432
1433 (% _msthash="506066" _msttexthash="544869" %)
1434 AT Command List is as below:
1435
1436 (% _msthash="506067" _msttexthash="361920" %)
1437 AT+<CMD>? :  Help on <CMD>
1438
1439 (% _msthash="506068" _msttexthash="243061" %)
1440 AT+<CMD> :  Run <CMD>
1441
1442 (% _msthash="506069" _msttexthash="704197" %)
1443 AT+<CMD>=<value> :  Set the value
1444
1445 (% _msthash="506070" _msttexthash="455676" %)
1446 AT+<CMD>=? :  Get the value
1447
1448 (% _msthash="506071" _msttexthash="670553" %)
1449 AT+DEBUG:  Set more info output
1450
1451 (% _msthash="506072" _msttexthash="485888" %)
1452 ATZ:  Trig a reset of the MCU
1453
1454 (% _msthash="506073" _msttexthash="2068872" %)
1455 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1456
1457 (% _msthash="506074" _msttexthash="689169" %)
1458 AT+DEUI:  Get or Set the Device EUI
1459
1460 (% _msthash="506075" _msttexthash="960414" %)
1461 AT+DADDR:  Get or Set the Device Address
1462
1463 (% _msthash="506076" _msttexthash="1079897" %)
1464 AT+APPKEY:  Get or Set the Application Key
1465
1466 (% _msthash="506077" _msttexthash="1326143" %)
1467 AT+NWKSKEY:  Get or Set the Network Session Key
1468
1469 (% _msthash="506078" _msttexthash="1573000" %)
1470 AT+APPSKEY:  Get or Set the Application Session Key
1471
1472 (% _msthash="506079" _msttexthash="1041729" %)
1473 AT+APPEUI:  Get or Set the Application EUI
1474
1475 (% _msthash="506080" _msttexthash="2104206" %)
1476 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1477
1478 (% _msthash="506081" _msttexthash="3369288" %)
1479 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1480
1481 (% _msthash="506082" _msttexthash="1894529" %)
1482 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1483
1484 (% _msthash="506083" _msttexthash="3864172" %)
1485 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1486
1487 (% _msthash="506084" _msttexthash="1712204" %)
1488 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1489
1490 (% _msthash="506085" _msttexthash="1281202" %)
1491 AT+RX2FQ:  Get or Set the Rx2 window frequency
1492
1493 (% _msthash="506086" _msttexthash="2796781" %)
1494 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1495
1496 (% _msthash="506087" _msttexthash="3285165" %)
1497 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1498
1499 (% _msthash="506088" _msttexthash="3286179" %)
1500 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1501
1502 (% _msthash="506089" _msttexthash="4703803" %)
1503 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1504
1505 (% _msthash="506090" _msttexthash="4704999" %)
1506 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1507
1508 (% _msthash="506091" _msttexthash="1528683" %)
1509 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1510
1511 (% _msthash="506092" _msttexthash="757185" %)
1512 AT+NWKID:  Get or Set the Network ID
1513
1514 (% _msthash="506093" _msttexthash="1156597" %)
1515 AT+FCU:  Get or Set the Frame Counter Uplink
1516
1517 (% _msthash="506094" _msttexthash="1273987" %)
1518 AT+FCD:  Get or Set the Frame Counter Downlink
1519
1520 (% _msthash="506095" _msttexthash="859222" %)
1521 AT+CLASS:  Get or Set the Device Class
1522
1523 (% _msthash="506096" _msttexthash="384852" %)
1524 AT+JOIN:  Join network
1525
1526 (% _msthash="506097" _msttexthash="548626" %)
1527 AT+NJS:  Get the join status
1528
1529 (% _msthash="506098" _msttexthash="2546206" %)
1530 AT+SENDB:  Send hexadecimal data along with the application port
1531
1532 (% _msthash="506099" _msttexthash="1932307" %)
1533 AT+SEND:  Send text data along with the application port
1534
1535 (% _msthash="506100" _msttexthash="3560557" %)
1536 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1537
1538 (% _msthash="506101" _msttexthash="1429701" %)
1539 AT+RECV:  Print last received data in raw format
1540
1541 (% _msthash="506102" _msttexthash="1735981" %)
1542 AT+VER:  Get current image version and Frequency Band
1543
1544 (% _msthash="506103" _msttexthash="1189474" %)
1545 AT+CFM:  Get or Set the confirmation mode (0-1)
1546
1547 (% _msthash="506104" _msttexthash="1718210" %)
1548 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1549
1550 (% _msthash="506105" _msttexthash="1339403" %)
1551 AT+SNR:  Get the SNR of the last received packet
1552
1553 (% _msthash="506106" _msttexthash="1452009" %)
1554 AT+RSSI:  Get the RSSI of the last received packet
1555
1556 (% _msthash="506107" _msttexthash="2768142" %)
1557 AT+TDC:  Get or set the application data transmission interval in ms
1558
1559 (% _msthash="506108" _msttexthash="1083914" %)
1560 AT+PORT:  Get or set the application port
1561
1562 (% _msthash="506109" _msttexthash="622440" %)
1563 AT+DISAT:  Disable AT commands
1564
1565 (% _msthash="506110" _msttexthash="868361" %)
1566 AT+PWORD: Set password, max 9 digits
1567
1568 (% _msthash="506111" _msttexthash="2210299" %)
1569 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1570
1571 (% _msthash="506112" _msttexthash="2113462" %)
1572 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1573
1574 (% _msthash="506113" _msttexthash="2087423" %)
1575 AT+PDTA:  Print the sector data from start page to stop page
1576
1577 (% _msthash="506114" _msttexthash="1063127" %)
1578 AT+PLDTA:  Print the last few sets of data
1579
1580 (% _msthash="506115" _msttexthash="1999426" %)
1581 AT+CLRDTA:  Clear the storage, record position back to 1st
1582
1583 (% _msthash="506116" _msttexthash="442130" %)
1584 AT+SLEEP:  Set sleep mode
1585
1586 (% _msthash="506117" _msttexthash="1080222" %)
1587 AT+EXT:  Get or Set external sensor model
1588
1589 (% _msthash="506118" _msttexthash="1309490" %)
1590 AT+BAT:  Get the current battery voltage in mV
1591
1592 (% _msthash="506119" _msttexthash="813891" %)
1593 AT+CFG:  Print all configurations
1594
1595 (% _msthash="506120" _msttexthash="551707" %)
1596 AT+WMOD:  Get or Set Work Mode
1597
1598 (% _msthash="506121" _msttexthash="2631499" %)
1599 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1600
1601 (% _msthash="506122" _msttexthash="3907150" %)
1602 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1603
1604 (% _msthash="506123" _msttexthash="854620" %)
1605 AT+SETCNT:  Set the count at present
1606
1607 (% _msthash="506124" _msttexthash="2554877" %)
1608 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1609
1610 (% _msthash="506125" _msttexthash="771849" %)
1611 AT+RPL:  Get or set response level
1612
1613 (% _msthash="506126" _msttexthash="1484314" %)
1614 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1615
1616 (% _msthash="506127" _msttexthash="741728" %)
1617 AT+LEAPSEC:  Get or Set Leap Second
1618
1619 (% _msthash="506128" _msttexthash="1694017" %)
1620 AT+SYNCMOD:  Get or Set time synchronization method
1621
1622 (% _msthash="506129" _msttexthash="2235948" %)
1623 AT+SYNCTDC:  Get or set time synchronization interval in day
1624
1625 (% _msthash="506130" _msttexthash="425542" %)
1626 AT+PID:  Get or set the PID
1627
1628
1629 == 6.2 Where to use AT commands and Downlink commands ==
1630
1631 (% _msthash="506131" _msttexthash="14585714" %)
1632 AT commands：
1633
1634 [[image:image-20220620153708-1.png||height="603" width="723"]]
1635
1636 (% _msthash="506132" _msttexthash="337922" %)
1637 Downlink commands:
1638
1639
1640 (% _msthash="506133" _msttexthash="33046" %)
1641 **TTN:**
1642
1643 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1644
1645
1646 (% _msthash="506134" _msttexthash="11113791" %)
1647 **Helium：**
1648
1649 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1650
1651
1652 (% _msthash="506135" _msttexthash="4159844" %)
1653 **Chirpstack:The downlink window will not be displayed until the network is accessed**
1654
1655 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1656
1657 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1658
1659
1660 (% _msthash="506136" _msttexthash="39286" %)
1661 **Aws:**
1662
1663 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1664
1665
1666
1667 == 6.3 How to change the uplink interval？ ==
1668
1669 [[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"]]
1670
1671
1672
1673 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1674
1675 [[image:image-20220615153355-1.png]]
1676
1677 [[image:1655802313617-381.png]]
1678
1679
1680 (((
1681 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.
1682 )))
1683
1684
1685 Input password and ATZ to activate LHT65N,As shown below:
1686
1687 [[image:image-20220615154519-3.png||height="672" width="807"]]
1688
1689
1690
1691 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1692
1693
1694 [[image:image-20220615153355-1.png]]
1695
1696
1697 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1698
1699 [[image:image-20220615170542-5.png]]
1700
1701
1702 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1703
1704 (% _msthash="506146" _msttexthash="52173160" %)
1705 First connect the four lines；(% style="display:none" %)
1706
1707 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1708
1709
1710 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1711
1712 [[image:image-20220621170938-2.png]]
1713
1714
1715 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1716
1717 [[image:image-20220615171334-6.png]]
1718
1719
1720 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1721
1722
1723 When this interface appears, it indicates that the download has been completed.
1724
1725 [[image:image-20220620160723-8.png]]
1726
1727
1728 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1729
1730
1731
1732 = 7. Order Info =
1733
1734
1735 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
1736
1737 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1738
1739 (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1740
1741 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1742
1743 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1744
1745 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1746
1747 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1748
1749 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1750
1751 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1752
1753 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1754
1755 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1756
1757 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1758
1759
1760
1761
1762
1763 = 8. Packing Info =
1764
1765
1766 **Package Includes**:
1767
1768 * LHT65N Temperature & Humidity Sensor x 1
1769 * Optional external sensor
1770
1771 **Dimension and weight**:
1772
1773 * Device Size:  10 x 10 x 3.5 cm
1774 * Device Weight: 120.5g
1775
1776
1777
1778
1779
1780 = 9. Reference material =
1781
1782 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1783
1784
1785
1786
1787
1788 = 10. FCC Warning =
1789
1790 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1791
1792 (1) This device may not cause harmful interference；
1793
1794 (2) this device must accept any interference received, including interference that may cause undesired operation.