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Version 170.30 by Xiaoling on 2022/06/22 11:22
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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 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.
970
971 (% style="color:red" %)Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.
972
973 **AT COMMAND FOR ALARM MODE:**
974
975 (% _mstvisible="1" class="box infomessage" %)
976 (((
977 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled)
978
979 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
980
981 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
982
983 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
984
985 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
986 )))
987
988
989
990
991 == 2.8 LED Indicator ==
992
993 The LHT65 has a triple color LED which for easy showing different stage .
994
995 While user press ACT button, the LED will work as per LED status with ACT button.
996
997 In a normal working state:
998
999 * For each uplink, the BLUE LED or RED LED will blink once.
1000 BLUE LED when external sensor is connected.
1001 * RED LED when external sensor is not connected
1002 * For each success downlink, the PURPLE LED will blink once
1003
1004 == 2.9 installation ==
1005
1006 (% _mstvisible="1" %)
1007 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
1008
1009
1010
1011 = 3. Sensors and Accessories =
1012
1013 == 3.1 E2 Extension Cable ==
1014
1015 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1016
1017 1m long breakout cable for LHT65N
1018
1019 [[image:image-20220619092421-3.png||height="371" width="529"]]
1020
1021
1022
1023
1024 == 3.2 E3 Temperature Probe ==
1025
1026
1027 [[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"]]
1028
1029
1030 Temperature sensor with 2 meters cable long
1031
1032 * Resolution: 0.0625 °C
1033 * ±0.5°C accuracy from -10°C to +85°C
1034 * ±2°C accuracy from -55°C to +125°C
1035 * Operating Range: -40 ~~ 125 °C
1036 * Working voltage 2.35v ~~ 5v
1037
1038 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1039
1040 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1041
1042 * AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1043
1044 * LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1045
1046 There are two kinds of commands to configure LHT65N, they are:
1047
1048 * (% style="color:#4f81bd" %)**General Commands**.
1049
1050 These commands are to configure:
1051
1052 1. General system settings like: uplink interval.
1053 1. LoRaWAN protocol & radio-related commands.
1054
1055 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]]
1056
1057 * (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1058
1059 These commands are only valid for LHT65N, as below:
1060
1061
1062 == 4.1 Set Transmit Interval Time ==
1063
1064 Feature: Change LoRaWAN End Node Transmit Interval.
1065
1066 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1067
1068 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
1069
1070
1071 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1072
1073 Format: Command Code (0x01) followed by 3 bytes time value.
1074
1075 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1076
1077 * **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1078
1079 * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1080
1081 == 4.2 Set External Sensor Mode ==
1082
1083 Feature: Change External Sensor Mode.
1084
1085 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1086
1087 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1088
1089
1090 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1091
1092 Total bytes: 2 ~~ 5 bytes
1093
1094 **Example:**
1095
1096 * 0xA201: Set external sensor type to E1
1097
1098 * 0xA209: Same as AT+EXT=9
1099
1100 * 0xA20702003c: Same as AT+SETCNT=60
1101
1102 == 4.3 Enable/Disable uplink Temperature probe ID ==
1103
1104 (((
1105 Feature: If PID is enabled, device will send the temperature probe ID on:
1106 )))
1107
1108 * (((
1109 First Packet after OTAA Join
1110 )))
1111 * (((
1112 Every 24 hours since the first packet.
1113 )))
1114
1115 (((
1116 PID is default set to disable (0)
1117 )))
1118
1119 (% style="color:#4f81bd" %)**AT Command:**
1120
1121 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1122
1123
1124 (% style="color:#4f81bd" %)**Downlink Command:**
1125
1126 * **0xA800**  **~-~->** AT+PID=0
1127 * **0xA801**     **~-~->** AT+PID=1
1128
1129 == 4.4 Set Password ==
1130
1131 Feature: Set device password, max 9 digits
1132
1133 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1134
1135 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1136
1137
1138 (% style="color:#4f81bd" %)**Downlink Command:**
1139
1140 No downlink command for this feature.
1141
1142
1143
1144 == 4.5 Quit AT Command ==
1145
1146 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1147
1148 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1149
1150 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1151
1152
1153 (% style="color:#4f81bd" %)**Downlink Command:**
1154
1155 No downlink command for this feature.
1156
1157
1158
1159 == 4.6 Set to sleep mode ==
1160
1161 Feature: Set device to sleep mode
1162
1163 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1164 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1165
1166 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1167
1168 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1169
1170
1171 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1172
1173 * There is no downlink command to set to Sleep mode.
1174
1175 == 4.7 Set system time ==
1176
1177 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1178
1179 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1180
1181 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1182
1183
1184 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1185
1186 0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1187
1188
1189
1190 == 4.8 Set Time Sync Mode ==
1191
1192 (((
1193 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1194 )))
1195
1196 (((
1197 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.
1198 )))
1199
1200 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1201
1202 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1203
1204
1205 (% style="color:#4f81bd" %)**Downlink Command:**
1206
1207 0x28 01 ~/~/ Same As AT+SYNCMOD=1
1208 0x28 00 ~/~/ Same As AT+SYNCMOD=0
1209
1210
1211
1212 == 4.9 Set Time Sync Interval ==
1213
1214 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1215
1216 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1217
1218 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1219
1220
1221 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1222
1223 **0x29 0A** ~/~/ Same as AT+SYNCTDC=0x0A
1224
1225
1226
1227 == 4.10 Print data entries base on page. ==
1228
1229 Feature: Print the sector data from start page to stop page (max is 416 pages).
1230
1231 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1232
1233 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1234
1235
1236 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1237
1238 No downlink commands for feature
1239
1240
1241
1242 == 4.11 Print last few data entries. ==
1243
1244 Feature: Print the last few data entries
1245
1246 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1247
1248 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1249
1250
1251 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1252
1253 No downlink commands for feature
1254
1255
1256
1257 == 4.12 Clear Flash Record ==
1258
1259 Feature: Clear flash storage for data log feature.
1260
1261
1262 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1263
1264 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1265
1266
1267 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1268
1269 * Example: 0xA301 ~/~/Same as AT+CLRDTA
1270
1271 == 4.13 Auto Send None-ACK messages ==
1272
1273 (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
1274 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.
1275
1276 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1277
1278 (% _msthash="315396" _msttexthash="734682" _mstvisible="1" %)
1279 The default factory setting is 0
1280
1281 (% _mstvisible="1" border="1" style="background-color:#ffffcc; color:green; width:450px" %)
1282 (% _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**
1283 (% _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
1284
1285 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1286
1287 * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1288
1289 = 5. Battery & How to replace =
1290
1291 == 5.1 Battery Type ==
1292
1293 (((
1294 (((
1295 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.
1296 )))
1297 )))
1298
1299 (((
1300
1301 )))
1302
1303 (((
1304 (((
1305 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1306 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1307 )))
1308 )))
1309
1310 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1311
1312
1313 == 5.2 Replace Battery ==
1314
1315 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.
1316
1317 [[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"]]
1318
1319
1320 == 5.3 Battery Life Analyze ==
1321
1322 (((
1323 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:
1324 [[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]]
1325 )))
1326
1327 (((
1328
1329 )))
1330
1331 (((
1332 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]]
1333 )))
1334
1335
1336
1337 = 6. FAQ =
1338
1339 == 6.1 How to use AT Command? ==
1340
1341 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.
1342
1343 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1344
1345
1346 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1347
1348 (% _msthash="506062" _msttexthash="1187732" %)
1349 **✓ (% style="background-color:yellow" %)USB to TTL GND <~-~->GND(%%)**
1350
1351 (% _msthash="506063" _msttexthash="1158313" %)**✓  **(% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1352
1353 (% _msthash="506064" _msttexthash="1175629" %)**✓  **(% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1354
1355 (% _msthash="506065" _msttexthash="1164696" %)**✓  **(% style="background-color:yellow" %)**USB to TTL 3.3V <~-~-> D-**
1356
1357
1358 (((
1359 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.
1360 )))
1361
1362
1363 Input password and ATZ to activate LHT65N,As shown below:
1364
1365 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1366
1367
1368 (% _msthash="506066" _msttexthash="544869" %)
1369 AT Command List is as below:
1370
1371 (% _msthash="506067" _msttexthash="361920" %)
1372 AT+<CMD>? :  Help on <CMD>
1373
1374 (% _msthash="506068" _msttexthash="243061" %)
1375 AT+<CMD> :  Run <CMD>
1376
1377 (% _msthash="506069" _msttexthash="704197" %)
1378 AT+<CMD>=<value> :  Set the value
1379
1380 (% _msthash="506070" _msttexthash="455676" %)
1381 AT+<CMD>=? :  Get the value
1382
1383 (% _msthash="506071" _msttexthash="670553" %)
1384 AT+DEBUG:  Set more info output
1385
1386 (% _msthash="506072" _msttexthash="485888" %)
1387 ATZ:  Trig a reset of the MCU
1388
1389 (% _msthash="506073" _msttexthash="2068872" %)
1390 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1391
1392 (% _msthash="506074" _msttexthash="689169" %)
1393 AT+DEUI:  Get or Set the Device EUI
1394
1395 (% _msthash="506075" _msttexthash="960414" %)
1396 AT+DADDR:  Get or Set the Device Address
1397
1398 (% _msthash="506076" _msttexthash="1079897" %)
1399 AT+APPKEY:  Get or Set the Application Key
1400
1401 (% _msthash="506077" _msttexthash="1326143" %)
1402 AT+NWKSKEY:  Get or Set the Network Session Key
1403
1404 (% _msthash="506078" _msttexthash="1573000" %)
1405 AT+APPSKEY:  Get or Set the Application Session Key
1406
1407 (% _msthash="506079" _msttexthash="1041729" %)
1408 AT+APPEUI:  Get or Set the Application EUI
1409
1410 (% _msthash="506080" _msttexthash="2104206" %)
1411 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1412
1413 (% _msthash="506081" _msttexthash="3369288" %)
1414 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1415
1416 (% _msthash="506082" _msttexthash="1894529" %)
1417 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1418
1419 (% _msthash="506083" _msttexthash="3864172" %)
1420 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1421
1422 (% _msthash="506084" _msttexthash="1712204" %)
1423 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1424
1425 (% _msthash="506085" _msttexthash="1281202" %)
1426 AT+RX2FQ:  Get or Set the Rx2 window frequency
1427
1428 (% _msthash="506086" _msttexthash="2796781" %)
1429 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1430
1431 (% _msthash="506087" _msttexthash="3285165" %)
1432 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1433
1434 (% _msthash="506088" _msttexthash="3286179" %)
1435 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1436
1437 (% _msthash="506089" _msttexthash="4703803" %)
1438 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1439
1440 (% _msthash="506090" _msttexthash="4704999" %)
1441 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1442
1443 (% _msthash="506091" _msttexthash="1528683" %)
1444 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1445
1446 (% _msthash="506092" _msttexthash="757185" %)
1447 AT+NWKID:  Get or Set the Network ID
1448
1449 (% _msthash="506093" _msttexthash="1156597" %)
1450 AT+FCU:  Get or Set the Frame Counter Uplink
1451
1452 (% _msthash="506094" _msttexthash="1273987" %)
1453 AT+FCD:  Get or Set the Frame Counter Downlink
1454
1455 (% _msthash="506095" _msttexthash="859222" %)
1456 AT+CLASS:  Get or Set the Device Class
1457
1458 (% _msthash="506096" _msttexthash="384852" %)
1459 AT+JOIN:  Join network
1460
1461 (% _msthash="506097" _msttexthash="548626" %)
1462 AT+NJS:  Get the join status
1463
1464 (% _msthash="506098" _msttexthash="2546206" %)
1465 AT+SENDB:  Send hexadecimal data along with the application port
1466
1467 (% _msthash="506099" _msttexthash="1932307" %)
1468 AT+SEND:  Send text data along with the application port
1469
1470 (% _msthash="506100" _msttexthash="3560557" %)
1471 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1472
1473 (% _msthash="506101" _msttexthash="1429701" %)
1474 AT+RECV:  Print last received data in raw format
1475
1476 (% _msthash="506102" _msttexthash="1735981" %)
1477 AT+VER:  Get current image version and Frequency Band
1478
1479 (% _msthash="506103" _msttexthash="1189474" %)
1480 AT+CFM:  Get or Set the confirmation mode (0-1)
1481
1482 (% _msthash="506104" _msttexthash="1718210" %)
1483 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1484
1485 (% _msthash="506105" _msttexthash="1339403" %)
1486 AT+SNR:  Get the SNR of the last received packet
1487
1488 (% _msthash="506106" _msttexthash="1452009" %)
1489 AT+RSSI:  Get the RSSI of the last received packet
1490
1491 (% _msthash="506107" _msttexthash="2768142" %)
1492 AT+TDC:  Get or set the application data transmission interval in ms
1493
1494 (% _msthash="506108" _msttexthash="1083914" %)
1495 AT+PORT:  Get or set the application port
1496
1497 (% _msthash="506109" _msttexthash="622440" %)
1498 AT+DISAT:  Disable AT commands
1499
1500 (% _msthash="506110" _msttexthash="868361" %)
1501 AT+PWORD: Set password, max 9 digits
1502
1503 (% _msthash="506111" _msttexthash="2210299" %)
1504 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1505
1506 (% _msthash="506112" _msttexthash="2113462" %)
1507 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1508
1509 (% _msthash="506113" _msttexthash="2087423" %)
1510 AT+PDTA:  Print the sector data from start page to stop page
1511
1512 (% _msthash="506114" _msttexthash="1063127" %)
1513 AT+PLDTA:  Print the last few sets of data
1514
1515 (% _msthash="506115" _msttexthash="1999426" %)
1516 AT+CLRDTA:  Clear the storage, record position back to 1st
1517
1518 (% _msthash="506116" _msttexthash="442130" %)
1519 AT+SLEEP:  Set sleep mode
1520
1521 (% _msthash="506117" _msttexthash="1080222" %)
1522 AT+EXT:  Get or Set external sensor model
1523
1524 (% _msthash="506118" _msttexthash="1309490" %)
1525 AT+BAT:  Get the current battery voltage in mV
1526
1527 (% _msthash="506119" _msttexthash="813891" %)
1528 AT+CFG:  Print all configurations
1529
1530 (% _msthash="506120" _msttexthash="551707" %)
1531 AT+WMOD:  Get or Set Work Mode
1532
1533 (% _msthash="506121" _msttexthash="2631499" %)
1534 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1535
1536 (% _msthash="506122" _msttexthash="3907150" %)
1537 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1538
1539 (% _msthash="506123" _msttexthash="854620" %)
1540 AT+SETCNT:  Set the count at present
1541
1542 (% _msthash="506124" _msttexthash="2554877" %)
1543 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1544
1545 (% _msthash="506125" _msttexthash="771849" %)
1546 AT+RPL:  Get or set response level
1547
1548 (% _msthash="506126" _msttexthash="1484314" %)
1549 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1550
1551 (% _msthash="506127" _msttexthash="741728" %)
1552 AT+LEAPSEC:  Get or Set Leap Second
1553
1554 (% _msthash="506128" _msttexthash="1694017" %)
1555 AT+SYNCMOD:  Get or Set time synchronization method
1556
1557 (% _msthash="506129" _msttexthash="2235948" %)
1558 AT+SYNCTDC:  Get or set time synchronization interval in day
1559
1560 (% _msthash="506130" _msttexthash="425542" %)
1561 AT+PID:  Get or set the PID
1562
1563
1564 == 6.2 Where to use AT commands and Downlink commands ==
1565
1566 (% _msthash="506131" _msttexthash="14585714" %)
1567 AT commands：
1568
1569 [[image:image-20220620153708-1.png||height="603" width="723"]]
1570
1571 (% _msthash="506132" _msttexthash="337922" %)
1572 Downlink commands:
1573
1574
1575 (% _msthash="506133" _msttexthash="33046" %)
1576 **TTN:**
1577
1578 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1579
1580
1581 (% _msthash="506134" _msttexthash="11113791" %)
1582 **Helium：**
1583
1584 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1585
1586
1587 (% _msthash="506135" _msttexthash="4159844" %)
1588 **Chirpstack:The downlink window will not be displayed until the network is accessed**
1589
1590 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1591
1592 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1593
1594
1595 (% _msthash="506136" _msttexthash="39286" %)
1596 **Aws:**
1597
1598 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1599
1600
1601
1602 == 6.3 How to change the uplink interval？ ==
1603
1604 [[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"]]
1605
1606
1607
1608 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1609
1610 [[image:image-20220615153355-1.png]]
1611
1612 [[image:1655802313617-381.png]]
1613
1614
1615 (((
1616 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.
1617 )))
1618
1619
1620 Input password and ATZ to activate LHT65N,As shown below:
1621
1622 [[image:image-20220615154519-3.png||height="672" width="807"]]
1623
1624
1625
1626 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1627
1628
1629 [[image:image-20220615153355-1.png]]
1630
1631
1632 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1633
1634 [[image:image-20220615170542-5.png]]
1635
1636
1637 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1638
1639 (% _msthash="506146" _msttexthash="52173160" %)
1640 First connect the four lines；(% style="display:none" %)
1641
1642 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1643
1644
1645 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1646
1647 [[image:image-20220621170938-2.png]]
1648
1649
1650 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1651
1652 [[image:image-20220615171334-6.png]]
1653
1654
1655 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1656
1657
1658 When this interface appears, it indicates that the download has been completed.
1659
1660 [[image:image-20220620160723-8.png]]
1661
1662
1663 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1664
1665
1666
1667 = 7. Order Info =
1668
1669
1670 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
1671
1672 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1673
1674 (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1675
1676 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1677
1678 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1679
1680 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1681
1682 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1683
1684 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1685
1686 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1687
1688 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1689
1690 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1691
1692 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1693
1694 = 8. Packing Info =
1695
1696
1697 **Package Includes**:
1698
1699 * LHT65N Temperature & Humidity Sensor x 1
1700 * Optional external sensor
1701
1702 **Dimension and weight**:
1703
1704 * Device Size:  10 x 10 x 3.5 cm
1705 * Device Weight: 120.5g
1706
1707 = 9. Reference material =
1708
1709 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1710
1711 = 10. FCC Warning =
1712
1713 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1714
1715 (1) This device may not cause harmful interference；
1716
1717 (2) this device must accept any interference received, including interference that may cause undesired operation.