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Version 170.31 by Xiaoling on 2022/06/22 11:23
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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
1007 == 2.8 LED Indicator ==
1008
1009 The LHT65 has a triple color LED which for easy showing different stage .
1010
1011 While user press ACT button, the LED will work as per LED status with ACT button.
1012
1013 In a normal working state:
1014
1015 * For each uplink, the BLUE LED or RED LED will blink once.
1016 BLUE LED when external sensor is connected.
1017 * RED LED when external sensor is not connected
1018 * For each success downlink, the PURPLE LED will blink once
1019
1020 == 2.9 installation ==
1021
1022 (% _mstvisible="1" %)
1023 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
1024
1025
1026
1027 = 3. Sensors and Accessories =
1028
1029 == 3.1 E2 Extension Cable ==
1030
1031 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1032
1033 1m long breakout cable for LHT65N
1034
1035 [[image:image-20220619092421-3.png||height="371" width="529"]]
1036
1037
1038
1039
1040 == 3.2 E3 Temperature Probe ==
1041
1042
1043 [[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"]]
1044
1045
1046 Temperature sensor with 2 meters cable long
1047
1048 * Resolution: 0.0625 °C
1049 * ±0.5°C accuracy from -10°C to +85°C
1050 * ±2°C accuracy from -55°C to +125°C
1051 * Operating Range: -40 ~~ 125 °C
1052 * Working voltage 2.35v ~~ 5v
1053
1054 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1055
1056 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1057
1058 * AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1059
1060 * LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1061
1062 There are two kinds of commands to configure LHT65N, they are:
1063
1064 * (% style="color:#4f81bd" %)**General Commands**.
1065
1066 These commands are to configure:
1067
1068 1. General system settings like: uplink interval.
1069 1. LoRaWAN protocol & radio-related commands.
1070
1071 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]]
1072
1073 * (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1074
1075 These commands are only valid for LHT65N, as below:
1076
1077
1078 == 4.1 Set Transmit Interval Time ==
1079
1080 Feature: Change LoRaWAN End Node Transmit Interval.
1081
1082 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1083
1084 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
1085
1086
1087 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1088
1089 Format: Command Code (0x01) followed by 3 bytes time value.
1090
1091 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1092
1093 * **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1094
1095 * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1096
1097 == 4.2 Set External Sensor Mode ==
1098
1099 Feature: Change External Sensor Mode.
1100
1101 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1102
1103 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1104
1105
1106 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1107
1108 Total bytes: 2 ~~ 5 bytes
1109
1110 **Example:**
1111
1112 * 0xA201: Set external sensor type to E1
1113
1114 * 0xA209: Same as AT+EXT=9
1115
1116 * 0xA20702003c: Same as AT+SETCNT=60
1117
1118 == 4.3 Enable/Disable uplink Temperature probe ID ==
1119
1120 (((
1121 Feature: If PID is enabled, device will send the temperature probe ID on:
1122 )))
1123
1124 * (((
1125 First Packet after OTAA Join
1126 )))
1127 * (((
1128 Every 24 hours since the first packet.
1129 )))
1130
1131 (((
1132 PID is default set to disable (0)
1133 )))
1134
1135 (% style="color:#4f81bd" %)**AT Command:**
1136
1137 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1138
1139
1140 (% style="color:#4f81bd" %)**Downlink Command:**
1141
1142 * **0xA800**  **~-~->** AT+PID=0
1143 * **0xA801**     **~-~->** AT+PID=1
1144
1145 == 4.4 Set Password ==
1146
1147 Feature: Set device password, max 9 digits
1148
1149 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1150
1151 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1152
1153
1154 (% style="color:#4f81bd" %)**Downlink Command:**
1155
1156 No downlink command for this feature.
1157
1158
1159
1160 == 4.5 Quit AT Command ==
1161
1162 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1163
1164 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1165
1166 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1167
1168
1169 (% style="color:#4f81bd" %)**Downlink Command:**
1170
1171 No downlink command for this feature.
1172
1173
1174
1175 == 4.6 Set to sleep mode ==
1176
1177 Feature: Set device to sleep mode
1178
1179 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1180 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1181
1182 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1183
1184 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1185
1186
1187 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1188
1189 * There is no downlink command to set to Sleep mode.
1190
1191 == 4.7 Set system time ==
1192
1193 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1194
1195 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1196
1197 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1198
1199
1200 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1201
1202 0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1203
1204
1205
1206 == 4.8 Set Time Sync Mode ==
1207
1208 (((
1209 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1210 )))
1211
1212 (((
1213 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.
1214 )))
1215
1216 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1217
1218 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1219
1220
1221 (% style="color:#4f81bd" %)**Downlink Command:**
1222
1223 0x28 01 ~/~/ Same As AT+SYNCMOD=1
1224 0x28 00 ~/~/ Same As AT+SYNCMOD=0
1225
1226
1227
1228 == 4.9 Set Time Sync Interval ==
1229
1230 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1231
1232 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1233
1234 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1235
1236
1237 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1238
1239 **0x29 0A** ~/~/ Same as AT+SYNCTDC=0x0A
1240
1241
1242
1243 == 4.10 Print data entries base on page. ==
1244
1245 Feature: Print the sector data from start page to stop page (max is 416 pages).
1246
1247 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1248
1249 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1250
1251
1252 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1253
1254 No downlink commands for feature
1255
1256
1257
1258 == 4.11 Print last few data entries. ==
1259
1260 Feature: Print the last few data entries
1261
1262 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1263
1264 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1265
1266
1267 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1268
1269 No downlink commands for feature
1270
1271
1272
1273 == 4.12 Clear Flash Record ==
1274
1275 Feature: Clear flash storage for data log feature.
1276
1277
1278 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1279
1280 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1281
1282
1283 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1284
1285 * Example: 0xA301 ~/~/Same as AT+CLRDTA
1286
1287 == 4.13 Auto Send None-ACK messages ==
1288
1289 (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
1290 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.
1291
1292 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1293
1294 (% _msthash="315396" _msttexthash="734682" _mstvisible="1" %)
1295 The default factory setting is 0
1296
1297 (% _mstvisible="1" border="1" style="background-color:#ffffcc; color:green; width:450px" %)
1298 (% _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**
1299 (% _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
1300
1301 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1302
1303 * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1304
1305 = 5. Battery & How to replace =
1306
1307 == 5.1 Battery Type ==
1308
1309 (((
1310 (((
1311 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.
1312 )))
1313 )))
1314
1315 (((
1316
1317 )))
1318
1319 (((
1320 (((
1321 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1322 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1323 )))
1324 )))
1325
1326 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1327
1328
1329 == 5.2 Replace Battery ==
1330
1331 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.
1332
1333 [[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"]]
1334
1335
1336 == 5.3 Battery Life Analyze ==
1337
1338 (((
1339 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:
1340 [[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]]
1341 )))
1342
1343 (((
1344
1345 )))
1346
1347 (((
1348 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]]
1349 )))
1350
1351
1352
1353 = 6. FAQ =
1354
1355 == 6.1 How to use AT Command? ==
1356
1357 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.
1358
1359 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1360
1361
1362 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1363
1364 (% _msthash="506062" _msttexthash="1187732" %)
1365 **✓ (% style="background-color:yellow" %)USB to TTL GND <~-~->GND(%%)**
1366
1367 (% _msthash="506063" _msttexthash="1158313" %)**✓  **(% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1368
1369 (% _msthash="506064" _msttexthash="1175629" %)**✓  **(% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1370
1371 (% _msthash="506065" _msttexthash="1164696" %)**✓  **(% style="background-color:yellow" %)**USB to TTL 3.3V <~-~-> D-**
1372
1373
1374 (((
1375 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.
1376 )))
1377
1378
1379 Input password and ATZ to activate LHT65N,As shown below:
1380
1381 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1382
1383
1384 (% _msthash="506066" _msttexthash="544869" %)
1385 AT Command List is as below:
1386
1387 (% _msthash="506067" _msttexthash="361920" %)
1388 AT+<CMD>? :  Help on <CMD>
1389
1390 (% _msthash="506068" _msttexthash="243061" %)
1391 AT+<CMD> :  Run <CMD>
1392
1393 (% _msthash="506069" _msttexthash="704197" %)
1394 AT+<CMD>=<value> :  Set the value
1395
1396 (% _msthash="506070" _msttexthash="455676" %)
1397 AT+<CMD>=? :  Get the value
1398
1399 (% _msthash="506071" _msttexthash="670553" %)
1400 AT+DEBUG:  Set more info output
1401
1402 (% _msthash="506072" _msttexthash="485888" %)
1403 ATZ:  Trig a reset of the MCU
1404
1405 (% _msthash="506073" _msttexthash="2068872" %)
1406 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1407
1408 (% _msthash="506074" _msttexthash="689169" %)
1409 AT+DEUI:  Get or Set the Device EUI
1410
1411 (% _msthash="506075" _msttexthash="960414" %)
1412 AT+DADDR:  Get or Set the Device Address
1413
1414 (% _msthash="506076" _msttexthash="1079897" %)
1415 AT+APPKEY:  Get or Set the Application Key
1416
1417 (% _msthash="506077" _msttexthash="1326143" %)
1418 AT+NWKSKEY:  Get or Set the Network Session Key
1419
1420 (% _msthash="506078" _msttexthash="1573000" %)
1421 AT+APPSKEY:  Get or Set the Application Session Key
1422
1423 (% _msthash="506079" _msttexthash="1041729" %)
1424 AT+APPEUI:  Get or Set the Application EUI
1425
1426 (% _msthash="506080" _msttexthash="2104206" %)
1427 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1428
1429 (% _msthash="506081" _msttexthash="3369288" %)
1430 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1431
1432 (% _msthash="506082" _msttexthash="1894529" %)
1433 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1434
1435 (% _msthash="506083" _msttexthash="3864172" %)
1436 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1437
1438 (% _msthash="506084" _msttexthash="1712204" %)
1439 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1440
1441 (% _msthash="506085" _msttexthash="1281202" %)
1442 AT+RX2FQ:  Get or Set the Rx2 window frequency
1443
1444 (% _msthash="506086" _msttexthash="2796781" %)
1445 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1446
1447 (% _msthash="506087" _msttexthash="3285165" %)
1448 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1449
1450 (% _msthash="506088" _msttexthash="3286179" %)
1451 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1452
1453 (% _msthash="506089" _msttexthash="4703803" %)
1454 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1455
1456 (% _msthash="506090" _msttexthash="4704999" %)
1457 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1458
1459 (% _msthash="506091" _msttexthash="1528683" %)
1460 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1461
1462 (% _msthash="506092" _msttexthash="757185" %)
1463 AT+NWKID:  Get or Set the Network ID
1464
1465 (% _msthash="506093" _msttexthash="1156597" %)
1466 AT+FCU:  Get or Set the Frame Counter Uplink
1467
1468 (% _msthash="506094" _msttexthash="1273987" %)
1469 AT+FCD:  Get or Set the Frame Counter Downlink
1470
1471 (% _msthash="506095" _msttexthash="859222" %)
1472 AT+CLASS:  Get or Set the Device Class
1473
1474 (% _msthash="506096" _msttexthash="384852" %)
1475 AT+JOIN:  Join network
1476
1477 (% _msthash="506097" _msttexthash="548626" %)
1478 AT+NJS:  Get the join status
1479
1480 (% _msthash="506098" _msttexthash="2546206" %)
1481 AT+SENDB:  Send hexadecimal data along with the application port
1482
1483 (% _msthash="506099" _msttexthash="1932307" %)
1484 AT+SEND:  Send text data along with the application port
1485
1486 (% _msthash="506100" _msttexthash="3560557" %)
1487 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1488
1489 (% _msthash="506101" _msttexthash="1429701" %)
1490 AT+RECV:  Print last received data in raw format
1491
1492 (% _msthash="506102" _msttexthash="1735981" %)
1493 AT+VER:  Get current image version and Frequency Band
1494
1495 (% _msthash="506103" _msttexthash="1189474" %)
1496 AT+CFM:  Get or Set the confirmation mode (0-1)
1497
1498 (% _msthash="506104" _msttexthash="1718210" %)
1499 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1500
1501 (% _msthash="506105" _msttexthash="1339403" %)
1502 AT+SNR:  Get the SNR of the last received packet
1503
1504 (% _msthash="506106" _msttexthash="1452009" %)
1505 AT+RSSI:  Get the RSSI of the last received packet
1506
1507 (% _msthash="506107" _msttexthash="2768142" %)
1508 AT+TDC:  Get or set the application data transmission interval in ms
1509
1510 (% _msthash="506108" _msttexthash="1083914" %)
1511 AT+PORT:  Get or set the application port
1512
1513 (% _msthash="506109" _msttexthash="622440" %)
1514 AT+DISAT:  Disable AT commands
1515
1516 (% _msthash="506110" _msttexthash="868361" %)
1517 AT+PWORD: Set password, max 9 digits
1518
1519 (% _msthash="506111" _msttexthash="2210299" %)
1520 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1521
1522 (% _msthash="506112" _msttexthash="2113462" %)
1523 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1524
1525 (% _msthash="506113" _msttexthash="2087423" %)
1526 AT+PDTA:  Print the sector data from start page to stop page
1527
1528 (% _msthash="506114" _msttexthash="1063127" %)
1529 AT+PLDTA:  Print the last few sets of data
1530
1531 (% _msthash="506115" _msttexthash="1999426" %)
1532 AT+CLRDTA:  Clear the storage, record position back to 1st
1533
1534 (% _msthash="506116" _msttexthash="442130" %)
1535 AT+SLEEP:  Set sleep mode
1536
1537 (% _msthash="506117" _msttexthash="1080222" %)
1538 AT+EXT:  Get or Set external sensor model
1539
1540 (% _msthash="506118" _msttexthash="1309490" %)
1541 AT+BAT:  Get the current battery voltage in mV
1542
1543 (% _msthash="506119" _msttexthash="813891" %)
1544 AT+CFG:  Print all configurations
1545
1546 (% _msthash="506120" _msttexthash="551707" %)
1547 AT+WMOD:  Get or Set Work Mode
1548
1549 (% _msthash="506121" _msttexthash="2631499" %)
1550 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1551
1552 (% _msthash="506122" _msttexthash="3907150" %)
1553 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1554
1555 (% _msthash="506123" _msttexthash="854620" %)
1556 AT+SETCNT:  Set the count at present
1557
1558 (% _msthash="506124" _msttexthash="2554877" %)
1559 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1560
1561 (% _msthash="506125" _msttexthash="771849" %)
1562 AT+RPL:  Get or set response level
1563
1564 (% _msthash="506126" _msttexthash="1484314" %)
1565 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1566
1567 (% _msthash="506127" _msttexthash="741728" %)
1568 AT+LEAPSEC:  Get or Set Leap Second
1569
1570 (% _msthash="506128" _msttexthash="1694017" %)
1571 AT+SYNCMOD:  Get or Set time synchronization method
1572
1573 (% _msthash="506129" _msttexthash="2235948" %)
1574 AT+SYNCTDC:  Get or set time synchronization interval in day
1575
1576 (% _msthash="506130" _msttexthash="425542" %)
1577 AT+PID:  Get or set the PID
1578
1579
1580 == 6.2 Where to use AT commands and Downlink commands ==
1581
1582 (% _msthash="506131" _msttexthash="14585714" %)
1583 AT commands：
1584
1585 [[image:image-20220620153708-1.png||height="603" width="723"]]
1586
1587 (% _msthash="506132" _msttexthash="337922" %)
1588 Downlink commands:
1589
1590
1591 (% _msthash="506133" _msttexthash="33046" %)
1592 **TTN:**
1593
1594 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1595
1596
1597 (% _msthash="506134" _msttexthash="11113791" %)
1598 **Helium：**
1599
1600 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1601
1602
1603 (% _msthash="506135" _msttexthash="4159844" %)
1604 **Chirpstack:The downlink window will not be displayed until the network is accessed**
1605
1606 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1607
1608 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1609
1610
1611 (% _msthash="506136" _msttexthash="39286" %)
1612 **Aws:**
1613
1614 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1615
1616
1617
1618 == 6.3 How to change the uplink interval？ ==
1619
1620 [[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"]]
1621
1622
1623
1624 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1625
1626 [[image:image-20220615153355-1.png]]
1627
1628 [[image:1655802313617-381.png]]
1629
1630
1631 (((
1632 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.
1633 )))
1634
1635
1636 Input password and ATZ to activate LHT65N,As shown below:
1637
1638 [[image:image-20220615154519-3.png||height="672" width="807"]]
1639
1640
1641
1642 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1643
1644
1645 [[image:image-20220615153355-1.png]]
1646
1647
1648 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1649
1650 [[image:image-20220615170542-5.png]]
1651
1652
1653 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1654
1655 (% _msthash="506146" _msttexthash="52173160" %)
1656 First connect the four lines；(% style="display:none" %)
1657
1658 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1659
1660
1661 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1662
1663 [[image:image-20220621170938-2.png]]
1664
1665
1666 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1667
1668 [[image:image-20220615171334-6.png]]
1669
1670
1671 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1672
1673
1674 When this interface appears, it indicates that the download has been completed.
1675
1676 [[image:image-20220620160723-8.png]]
1677
1678
1679 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1680
1681
1682
1683 = 7. Order Info =
1684
1685
1686 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
1687
1688 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1689
1690 (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1691
1692 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1693
1694 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1695
1696 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1697
1698 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1699
1700 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1701
1702 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1703
1704 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1705
1706 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1707
1708 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1709
1710 = 8. Packing Info =
1711
1712
1713 **Package Includes**:
1714
1715 * LHT65N Temperature & Humidity Sensor x 1
1716 * Optional external sensor
1717
1718 **Dimension and weight**:
1719
1720 * Device Size:  10 x 10 x 3.5 cm
1721 * Device Weight: 120.5g
1722
1723 = 9. Reference material =
1724
1725 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1726
1727 = 10. FCC Warning =
1728
1729 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1730
1731 (1) This device may not cause harmful interference；
1732
1733 (2) this device must accept any interference received, including interference that may cause undesired operation.