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Version 170.29 by Xiaoling on 2022/06/22 11:21
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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 Poll Message Flag: 1: This message is a poll message reply.
784 )))
785 )))
786
787 (% _mstvisible="1" %)
788 * (% _mstvisible="3" %)
789 (((
790 (% _mstvisible="4" %)
791 (((
792 (% _msthash="1197157" _msttexthash="561548" _mstvisible="5" %)
793 Poll Message Flag is set to 1.
794 )))
795 )))
796 * (% _mstvisible="3" %)
797 (((
798 (% _mstvisible="4" %)
799 (((
800 (% _msthash="1197158" _msttexthash="9284964" _mstvisible="5" %)
801 Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
802 )))
803 )))
804
805 (% _mstvisible="1" %)
806 (((
807 (% _mstvisible="2" %)
808 (((
809 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
810
811
812 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
813 For example, in US915 band, the max payload for different DR is:
814 )))
815 )))
816
817 (% _mstvisible="1" %)
818 (((
819 (% _mstvisible="2" %)
820 (((
821 (% _msthash="736725" _msttexthash="1065532" _mstvisible="3" %)
822 a) DR0: max is 11 bytes so one entry of data
823 )))
824 )))
825
826 (% _mstvisible="1" %)
827 (((
828 (% _mstvisible="2" %)
829 (((
830 (% _msthash="736726" _msttexthash="3265665" _mstvisible="3" %)
831 b) DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
832 )))
833 )))
834
835 (% _mstvisible="1" %)
836 (((
837 (% _mstvisible="2" %)
838 (((
839 (% _msthash="736727" _msttexthash="1454115" _mstvisible="3" style="text-align: left;" %)
840 c) DR2: total payload includes 11 entries of data
841 )))
842 )))
843
844 (% _mstvisible="1" %)
845 (((
846 (% _mstvisible="2" %)
847 (((
848 (% _msthash="736728" _msttexthash="1483924" _mstvisible="3" style="text-align: left;" %)
849 d) DR3: total payload includes 22 entries of data.
850 )))
851 )))
852
853 (% _mstvisible="1" %)
854 (((
855 (% _mstvisible="2" %)
856 (((
857 (% _msthash="736729" _msttexthash="5848349" _mstvisible="3" style="text-align: left;" %)
858 If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0   
859 )))
860 )))
861
862
863 (% _mstvisible="1" style="text-align: left;" %)
864 (% _msthash="315269" _msttexthash="104767" _mstvisible="3" %)**Example:**
865
866 (% _msthash="315270" _msttexthash="913822" _mstvisible="1" style="text-align: left;" %)
867 If LHT65N has below data inside Flash:
868
869 (% _mstvisible="1" %)
870 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
871
872 (% _mstvisible="1" %)
873 (((
874 (% _msthash="506081" _msttexthash="1663961" _mstvisible="2" style="text-align: left;" %)
875 If user sends below downlink command: (% _mstvisible="3" style="background-color:yellow" %)3160065F9760066DA705
876 )))
877
878 (% _mstvisible="1" %)
879 (((
880 (% _msthash="506082" _msttexthash="1092494" _mstvisible="2" style="text-align: left;" %)
881 Where : Start time: 60065F97 = time 21/1/19 04:27:03
882 )))
883
884 (% _mstvisible="1" %)
885 (((
886 (% _msthash="506083" _msttexthash="737269" _mstvisible="2" style="text-align: left;" %)
887 Stop time 60066DA7= time 21/1/19 05:27:(% _msthash="903005" _msttexthash="9672" _mstvisible="2" %)03
888 )))
889
890 (% _mstvisible="1" %)
891 (((
892 (% _mstvisible="2" %)
893
894 )))
895
896 (% _mstvisible="1" %)
897 (((
898 (% _msthash="506084" _msttexthash="751218" _mstvisible="2" style="text-align: left;" %)
899 LHT65N will uplink this payload.
900 )))
901
902 (% _mstvisible="1" %)
903 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
904
905 (% _msthash="315271" _msttexthash="12012546" _mstvisible="1" style="text-align: left;" %)
906 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
907
908 (% _msthash="315237" _msttexthash="1385839" %)
909 Where the first 11 bytes is for the first entry:
910
911 (% _msthash="315238" _msttexthash="274846" %)
912 7FFF089801464160065F97
913
914 (% _msthash="315239" _msttexthash="617435" %)
915 Ext sensor data=0x7FFF/100=327.67
916
917 (% _msthash="315240" _msttexthash="270543" %)
918 Temp=0x0898/100=22.00
919
920 (% _msthash="315241" _msttexthash="211783" %)
921 Hum=0x0146/10=32.6
922
923 (% _msthash="315242" _msttexthash="1569776" %)
924 poll message flag & Ext=0x41,means reply data,Ext=1
925
926 (% _msthash="315243" _msttexthash="1120509" %)
927 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
928
929
930
931 == 2.7 Alarm Mode ==
932
933 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.
934
935 (% style="color:red" %)Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.
936
937 **AT COMMAND FOR ALARM MODE:**
938
939 (% _mstvisible="1" class="box infomessage" %)
940 (((
941 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled)
942
943 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
944
945 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
946
947 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
948
949 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
950 )))
951
952
953
954
955 == 2.8 LED Indicator ==
956
957 The LHT65 has a triple color LED which for easy showing different stage .
958
959 While user press ACT button, the LED will work as per LED status with ACT button.
960
961 In a normal working state:
962
963 * For each uplink, the BLUE LED or RED LED will blink once.
964 BLUE LED when external sensor is connected.
965 * RED LED when external sensor is not connected
966 * For each success downlink, the PURPLE LED will blink once
967
968 == 2.9 installation ==
969
970 (% _mstvisible="1" %)
971 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
972
973
974
975 = 3. Sensors and Accessories =
976
977 == 3.1 E2 Extension Cable ==
978
979 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
980
981 1m long breakout cable for LHT65N
982
983 [[image:image-20220619092421-3.png||height="371" width="529"]]
984
985
986
987
988 == 3.2 E3 Temperature Probe ==
989
990
991 [[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"]]
992
993
994 Temperature sensor with 2 meters cable long
995
996 * Resolution: 0.0625 °C
997 * ±0.5°C accuracy from -10°C to +85°C
998 * ±2°C accuracy from -55°C to +125°C
999 * Operating Range: -40 ~~ 125 °C
1000 * Working voltage 2.35v ~~ 5v
1001
1002 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1003
1004 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1005
1006 * AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1007
1008 * LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1009
1010 There are two kinds of commands to configure LHT65N, they are:
1011
1012 * (% style="color:#4f81bd" %)**General Commands**.
1013
1014 These commands are to configure:
1015
1016 1. General system settings like: uplink interval.
1017 1. LoRaWAN protocol & radio-related commands.
1018
1019 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]]
1020
1021 * (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1022
1023 These commands are only valid for LHT65N, as below:
1024
1025
1026 == 4.1 Set Transmit Interval Time ==
1027
1028 Feature: Change LoRaWAN End Node Transmit Interval.
1029
1030 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1031
1032 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
1033
1034
1035 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1036
1037 Format: Command Code (0x01) followed by 3 bytes time value.
1038
1039 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1040
1041 * **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1042
1043 * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1044
1045 == 4.2 Set External Sensor Mode ==
1046
1047 Feature: Change External Sensor Mode.
1048
1049 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1050
1051 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1052
1053
1054 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1055
1056 Total bytes: 2 ~~ 5 bytes
1057
1058 **Example:**
1059
1060 * 0xA201: Set external sensor type to E1
1061
1062 * 0xA209: Same as AT+EXT=9
1063
1064 * 0xA20702003c: Same as AT+SETCNT=60
1065
1066 == 4.3 Enable/Disable uplink Temperature probe ID ==
1067
1068 (((
1069 Feature: If PID is enabled, device will send the temperature probe ID on:
1070 )))
1071
1072 * (((
1073 First Packet after OTAA Join
1074 )))
1075 * (((
1076 Every 24 hours since the first packet.
1077 )))
1078
1079 (((
1080 PID is default set to disable (0)
1081 )))
1082
1083 (% style="color:#4f81bd" %)**AT Command:**
1084
1085 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1086
1087
1088 (% style="color:#4f81bd" %)**Downlink Command:**
1089
1090 * **0xA800**  **~-~->** AT+PID=0
1091 * **0xA801**     **~-~->** AT+PID=1
1092
1093 == 4.4 Set Password ==
1094
1095 Feature: Set device password, max 9 digits
1096
1097 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1098
1099 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1100
1101
1102 (% style="color:#4f81bd" %)**Downlink Command:**
1103
1104 No downlink command for this feature.
1105
1106
1107
1108 == 4.5 Quit AT Command ==
1109
1110 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1111
1112 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1113
1114 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1115
1116
1117 (% style="color:#4f81bd" %)**Downlink Command:**
1118
1119 No downlink command for this feature.
1120
1121
1122
1123 == 4.6 Set to sleep mode ==
1124
1125 Feature: Set device to sleep mode
1126
1127 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1128 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1129
1130 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1131
1132 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1133
1134
1135 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1136
1137 * There is no downlink command to set to Sleep mode.
1138
1139 == 4.7 Set system time ==
1140
1141 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1142
1143 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1144
1145 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1146
1147
1148 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1149
1150 0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1151
1152
1153
1154 == 4.8 Set Time Sync Mode ==
1155
1156 (((
1157 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1158 )))
1159
1160 (((
1161 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.
1162 )))
1163
1164 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1165
1166 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1167
1168
1169 (% style="color:#4f81bd" %)**Downlink Command:**
1170
1171 0x28 01 ~/~/ Same As AT+SYNCMOD=1
1172 0x28 00 ~/~/ Same As AT+SYNCMOD=0
1173
1174
1175
1176 == 4.9 Set Time Sync Interval ==
1177
1178 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1179
1180 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1181
1182 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1183
1184
1185 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1186
1187 **0x29 0A** ~/~/ Same as AT+SYNCTDC=0x0A
1188
1189
1190
1191 == 4.10 Print data entries base on page. ==
1192
1193 Feature: Print the sector data from start page to stop page (max is 416 pages).
1194
1195 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1196
1197 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1198
1199
1200 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1201
1202 No downlink commands for feature
1203
1204
1205
1206 == 4.11 Print last few data entries. ==
1207
1208 Feature: Print the last few data entries
1209
1210 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1211
1212 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1213
1214
1215 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1216
1217 No downlink commands for feature
1218
1219
1220
1221 == 4.12 Clear Flash Record ==
1222
1223 Feature: Clear flash storage for data log feature.
1224
1225
1226 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1227
1228 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1229
1230
1231 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1232
1233 * Example: 0xA301 ~/~/Same as AT+CLRDTA
1234
1235 == 4.13 Auto Send None-ACK messages ==
1236
1237 (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
1238 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.
1239
1240 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1241
1242 (% _msthash="315396" _msttexthash="734682" _mstvisible="1" %)
1243 The default factory setting is 0
1244
1245 (% _mstvisible="1" border="1" style="background-color:#ffffcc; color:green; width:450px" %)
1246 (% _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**
1247 (% _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
1248
1249 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1250
1251 * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1252
1253 = 5. Battery & How to replace =
1254
1255 == 5.1 Battery Type ==
1256
1257 (((
1258 (((
1259 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.
1260 )))
1261 )))
1262
1263 (((
1264
1265 )))
1266
1267 (((
1268 (((
1269 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1270 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1271 )))
1272 )))
1273
1274 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1275
1276
1277 == 5.2 Replace Battery ==
1278
1279 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.
1280
1281 [[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"]]
1282
1283
1284 == 5.3 Battery Life Analyze ==
1285
1286 (((
1287 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:
1288 [[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]]
1289 )))
1290
1291 (((
1292
1293 )))
1294
1295 (((
1296 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]]
1297 )))
1298
1299
1300
1301 = 6. FAQ =
1302
1303 == 6.1 How to use AT Command? ==
1304
1305 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.
1306
1307 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1308
1309
1310 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1311
1312 (% _msthash="506062" _msttexthash="1187732" %)
1313 **✓ (% style="background-color:yellow" %)USB to TTL GND <~-~->GND(%%)**
1314
1315 (% _msthash="506063" _msttexthash="1158313" %)**✓  **(% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1316
1317 (% _msthash="506064" _msttexthash="1175629" %)**✓  **(% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1318
1319 (% _msthash="506065" _msttexthash="1164696" %)**✓  **(% style="background-color:yellow" %)**USB to TTL 3.3V <~-~-> D-**
1320
1321
1322 (((
1323 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.
1324 )))
1325
1326
1327 Input password and ATZ to activate LHT65N,As shown below:
1328
1329 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1330
1331
1332 (% _msthash="506066" _msttexthash="544869" %)
1333 AT Command List is as below:
1334
1335 (% _msthash="506067" _msttexthash="361920" %)
1336 AT+<CMD>? :  Help on <CMD>
1337
1338 (% _msthash="506068" _msttexthash="243061" %)
1339 AT+<CMD> :  Run <CMD>
1340
1341 (% _msthash="506069" _msttexthash="704197" %)
1342 AT+<CMD>=<value> :  Set the value
1343
1344 (% _msthash="506070" _msttexthash="455676" %)
1345 AT+<CMD>=? :  Get the value
1346
1347 (% _msthash="506071" _msttexthash="670553" %)
1348 AT+DEBUG:  Set more info output
1349
1350 (% _msthash="506072" _msttexthash="485888" %)
1351 ATZ:  Trig a reset of the MCU
1352
1353 (% _msthash="506073" _msttexthash="2068872" %)
1354 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1355
1356 (% _msthash="506074" _msttexthash="689169" %)
1357 AT+DEUI:  Get or Set the Device EUI
1358
1359 (% _msthash="506075" _msttexthash="960414" %)
1360 AT+DADDR:  Get or Set the Device Address
1361
1362 (% _msthash="506076" _msttexthash="1079897" %)
1363 AT+APPKEY:  Get or Set the Application Key
1364
1365 (% _msthash="506077" _msttexthash="1326143" %)
1366 AT+NWKSKEY:  Get or Set the Network Session Key
1367
1368 (% _msthash="506078" _msttexthash="1573000" %)
1369 AT+APPSKEY:  Get or Set the Application Session Key
1370
1371 (% _msthash="506079" _msttexthash="1041729" %)
1372 AT+APPEUI:  Get or Set the Application EUI
1373
1374 (% _msthash="506080" _msttexthash="2104206" %)
1375 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1376
1377 (% _msthash="506081" _msttexthash="3369288" %)
1378 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1379
1380 (% _msthash="506082" _msttexthash="1894529" %)
1381 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1382
1383 (% _msthash="506083" _msttexthash="3864172" %)
1384 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1385
1386 (% _msthash="506084" _msttexthash="1712204" %)
1387 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1388
1389 (% _msthash="506085" _msttexthash="1281202" %)
1390 AT+RX2FQ:  Get or Set the Rx2 window frequency
1391
1392 (% _msthash="506086" _msttexthash="2796781" %)
1393 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1394
1395 (% _msthash="506087" _msttexthash="3285165" %)
1396 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1397
1398 (% _msthash="506088" _msttexthash="3286179" %)
1399 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1400
1401 (% _msthash="506089" _msttexthash="4703803" %)
1402 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1403
1404 (% _msthash="506090" _msttexthash="4704999" %)
1405 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1406
1407 (% _msthash="506091" _msttexthash="1528683" %)
1408 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1409
1410 (% _msthash="506092" _msttexthash="757185" %)
1411 AT+NWKID:  Get or Set the Network ID
1412
1413 (% _msthash="506093" _msttexthash="1156597" %)
1414 AT+FCU:  Get or Set the Frame Counter Uplink
1415
1416 (% _msthash="506094" _msttexthash="1273987" %)
1417 AT+FCD:  Get or Set the Frame Counter Downlink
1418
1419 (% _msthash="506095" _msttexthash="859222" %)
1420 AT+CLASS:  Get or Set the Device Class
1421
1422 (% _msthash="506096" _msttexthash="384852" %)
1423 AT+JOIN:  Join network
1424
1425 (% _msthash="506097" _msttexthash="548626" %)
1426 AT+NJS:  Get the join status
1427
1428 (% _msthash="506098" _msttexthash="2546206" %)
1429 AT+SENDB:  Send hexadecimal data along with the application port
1430
1431 (% _msthash="506099" _msttexthash="1932307" %)
1432 AT+SEND:  Send text data along with the application port
1433
1434 (% _msthash="506100" _msttexthash="3560557" %)
1435 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1436
1437 (% _msthash="506101" _msttexthash="1429701" %)
1438 AT+RECV:  Print last received data in raw format
1439
1440 (% _msthash="506102" _msttexthash="1735981" %)
1441 AT+VER:  Get current image version and Frequency Band
1442
1443 (% _msthash="506103" _msttexthash="1189474" %)
1444 AT+CFM:  Get or Set the confirmation mode (0-1)
1445
1446 (% _msthash="506104" _msttexthash="1718210" %)
1447 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1448
1449 (% _msthash="506105" _msttexthash="1339403" %)
1450 AT+SNR:  Get the SNR of the last received packet
1451
1452 (% _msthash="506106" _msttexthash="1452009" %)
1453 AT+RSSI:  Get the RSSI of the last received packet
1454
1455 (% _msthash="506107" _msttexthash="2768142" %)
1456 AT+TDC:  Get or set the application data transmission interval in ms
1457
1458 (% _msthash="506108" _msttexthash="1083914" %)
1459 AT+PORT:  Get or set the application port
1460
1461 (% _msthash="506109" _msttexthash="622440" %)
1462 AT+DISAT:  Disable AT commands
1463
1464 (% _msthash="506110" _msttexthash="868361" %)
1465 AT+PWORD: Set password, max 9 digits
1466
1467 (% _msthash="506111" _msttexthash="2210299" %)
1468 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1469
1470 (% _msthash="506112" _msttexthash="2113462" %)
1471 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1472
1473 (% _msthash="506113" _msttexthash="2087423" %)
1474 AT+PDTA:  Print the sector data from start page to stop page
1475
1476 (% _msthash="506114" _msttexthash="1063127" %)
1477 AT+PLDTA:  Print the last few sets of data
1478
1479 (% _msthash="506115" _msttexthash="1999426" %)
1480 AT+CLRDTA:  Clear the storage, record position back to 1st
1481
1482 (% _msthash="506116" _msttexthash="442130" %)
1483 AT+SLEEP:  Set sleep mode
1484
1485 (% _msthash="506117" _msttexthash="1080222" %)
1486 AT+EXT:  Get or Set external sensor model
1487
1488 (% _msthash="506118" _msttexthash="1309490" %)
1489 AT+BAT:  Get the current battery voltage in mV
1490
1491 (% _msthash="506119" _msttexthash="813891" %)
1492 AT+CFG:  Print all configurations
1493
1494 (% _msthash="506120" _msttexthash="551707" %)
1495 AT+WMOD:  Get or Set Work Mode
1496
1497 (% _msthash="506121" _msttexthash="2631499" %)
1498 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1499
1500 (% _msthash="506122" _msttexthash="3907150" %)
1501 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1502
1503 (% _msthash="506123" _msttexthash="854620" %)
1504 AT+SETCNT:  Set the count at present
1505
1506 (% _msthash="506124" _msttexthash="2554877" %)
1507 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1508
1509 (% _msthash="506125" _msttexthash="771849" %)
1510 AT+RPL:  Get or set response level
1511
1512 (% _msthash="506126" _msttexthash="1484314" %)
1513 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1514
1515 (% _msthash="506127" _msttexthash="741728" %)
1516 AT+LEAPSEC:  Get or Set Leap Second
1517
1518 (% _msthash="506128" _msttexthash="1694017" %)
1519 AT+SYNCMOD:  Get or Set time synchronization method
1520
1521 (% _msthash="506129" _msttexthash="2235948" %)
1522 AT+SYNCTDC:  Get or set time synchronization interval in day
1523
1524 (% _msthash="506130" _msttexthash="425542" %)
1525 AT+PID:  Get or set the PID
1526
1527
1528 == 6.2 Where to use AT commands and Downlink commands ==
1529
1530 (% _msthash="506131" _msttexthash="14585714" %)
1531 AT commands：
1532
1533 [[image:image-20220620153708-1.png||height="603" width="723"]]
1534
1535 (% _msthash="506132" _msttexthash="337922" %)
1536 Downlink commands:
1537
1538
1539 (% _msthash="506133" _msttexthash="33046" %)
1540 **TTN:**
1541
1542 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1543
1544
1545 (% _msthash="506134" _msttexthash="11113791" %)
1546 **Helium：**
1547
1548 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1549
1550
1551 (% _msthash="506135" _msttexthash="4159844" %)
1552 **Chirpstack:The downlink window will not be displayed until the network is accessed**
1553
1554 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1555
1556 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1557
1558
1559 (% _msthash="506136" _msttexthash="39286" %)
1560 **Aws:**
1561
1562 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1563
1564
1565
1566 == 6.3 How to change the uplink interval？ ==
1567
1568 [[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"]]
1569
1570
1571
1572 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1573
1574 [[image:image-20220615153355-1.png]]
1575
1576 [[image:1655802313617-381.png]]
1577
1578
1579 (((
1580 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.
1581 )))
1582
1583
1584 Input password and ATZ to activate LHT65N,As shown below:
1585
1586 [[image:image-20220615154519-3.png||height="672" width="807"]]
1587
1588
1589
1590 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1591
1592
1593 [[image:image-20220615153355-1.png]]
1594
1595
1596 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1597
1598 [[image:image-20220615170542-5.png]]
1599
1600
1601 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1602
1603 (% _msthash="506146" _msttexthash="52173160" %)
1604 First connect the four lines；(% style="display:none" %)
1605
1606 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1607
1608
1609 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1610
1611 [[image:image-20220621170938-2.png]]
1612
1613
1614 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1615
1616 [[image:image-20220615171334-6.png]]
1617
1618
1619 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1620
1621
1622 When this interface appears, it indicates that the download has been completed.
1623
1624 [[image:image-20220620160723-8.png]]
1625
1626
1627 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1628
1629
1630
1631 = 7. Order Info =
1632
1633
1634 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
1635
1636 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1637
1638 (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1639
1640 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1641
1642 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1643
1644 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1645
1646 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1647
1648 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1649
1650 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1651
1652 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1653
1654 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1655
1656 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1657
1658 = 8. Packing Info =
1659
1660
1661 **Package Includes**:
1662
1663 * LHT65N Temperature & Humidity Sensor x 1
1664 * Optional external sensor
1665
1666 **Dimension and weight**:
1667
1668 * Device Size:  10 x 10 x 3.5 cm
1669 * Device Weight: 120.5g
1670
1671 = 9. Reference material =
1672
1673 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1674
1675 = 10. FCC Warning =
1676
1677 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1678
1679 (1) This device may not cause harmful interference；
1680
1681 (2) this device must accept any interference received, including interference that may cause undesired operation.