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Version 170.20 by Xiaoling on 2022/06/22 11:01
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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 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.**
22
23 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.
24
25 LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
26
27 LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
28
29 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.
30
31 *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
32
33
34 == 1.2 Features ==
35
36 * Wall mountable
37 * LoRaWAN v1.0.3 Class A protocol
38 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
39 * AT Commands to change parameters
40 * Remote configure parameters via LoRaWAN Downlink
41 * Firmware upgradeable via program port
42 * Built-in 2400mAh battery for up to 10 years of use.
43 * Built-in Temperature & Humidity sensor
44 * Optional External Sensors
45 * Tri-color LED to indicate working status
46 * Datalog feature
47
48 == 1.3 Specification ==
49
50
51 **Built-in Temperature Sensor:**
52
53 * Resolution: 0.01 °C
54 * Accuracy Tolerance : Typ ±0.3 °C
55 * Long Term Drift: < 0.02 °C/yr
56 * Operating Range: -40 ~~ 85 °C
57
58 **Built-in Humidity Sensor:**
59
60 * Resolution: 0.04 %RH
61 * Accuracy Tolerance : Typ ±3 %RH
62 * Long Term Drift: < 0.02 °C/yr
63 * Operating Range: 0 ~~ 96 %RH
64
65 **External Temperature Sensor:**
66
67 * Resolution: 0.0625 °C
68 * ±0.5°C accuracy from -10°C to +85°C
69 * ±2°C accuracy from -55°C to +125°C
70 * Operating Range: -55 °C ~~ 125 °C
71
72 = 2. Connect LHT65N to IoT Server =
73
74 == 2.1 How does LHT65N work? ==
75
76 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.
77
78 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.
79
80
81 == 2.2 How to Activate LHT65N? ==
82
83 The LHT65N has two working modes:
84
85 * (% 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.
86 * (% 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. 
87
88 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
89
90
91 [[image:image-20220515123819-1.png||_mstalt="430742" _mstvisible="3" height="379" width="317"]]
92
93 [[image:image-20220525110604-2.png||_mstalt="427531" _mstvisible="3"]]
94
95
96
97 == 2.3 Example to join LoRaWAN network ==
98
99 (% _msthash="315240" _msttexthash="9205482" _mstvisible="1" class="wikigeneratedid" %)
100 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.
101
102 (% _mstvisible="1" class="wikigeneratedid" %)
103 [[image:image-20220522232442-1.png||_mstalt="427830" _mstvisible="3" height="387" width="648"]]
104
105
106 (((
107 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:
108 )))
109
110
111
112 === 2.3.1 Step 1: Create Device n TTN ===
113
114 (((
115 Create a device in TTN V3 with the OTAA keys from LHT65N.
116 )))
117
118 (((
119 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
120 )))
121
122 [[image:image-20220617150003-1.jpeg]]
123
124 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
125
126 Add APP EUI in the application.
127
128
129 [[image:image-20220522232916-3.png||_mstalt="430495" _mstvisible="3"]]
130
131
132 [[image:image-20220522232932-4.png||_mstalt="430157" _mstvisible="3"]]
133
134
135 [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
136
137
138 Note: LHT65N use same payload as LHT65.
139
140
141 [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
142
143
144 Input APP EUI,  APP KEY and DEV EUI:
145
146
147 [[image:image-20220522233118-7.png||_mstalt="430430" _mstvisible="3"]]
148
149
150
151
152 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
153
154 (((
155 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.
156 )))
157
158 [[image:image-20220522233300-8.png||_mstalt="428389" _mstvisible="3" height="219" width="722"]]
159
160
161
162
163 == 2.4 Uplink Payload ==
164
165 (((
166 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.
167 )))
168
169 (((
170 After each uplink, the (% _mstvisible="3" style="color:blue" %)**BLUE LED**(%%) will blink once.
171 )))
172
173 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:426px" %)
174 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 97px;" %)(% _mstvisible="5" %)
175 (((
176 (% _mstvisible="6" %)
177 (% _msthash="1817478" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
178 )))|=(% _mstvisible="4" style="width: 39px;" %)(% _mstvisible="5" %)
179 (((
180 (% _mstvisible="6" %)
181 (% _msthash="1817479" _msttexthash="4550" _mstvisible="8" %)**2**
182 )))|=(% _mstvisible="4" style="width: 100px;" %)(% _mstvisible="5" %)
183 (((
184 (% _mstvisible="6" %)
185 (% _msthash="1817480" _msttexthash="4550" _mstvisible="8" %)**2**
186 )))|=(% _mstvisible="4" style="width: 77px;" %)(% _mstvisible="5" %)
187 (((
188 (% _mstvisible="6" %)
189 (% _msthash="1817481" _msttexthash="4550" _mstvisible="8" %)**2**
190 )))|=(% _mstvisible="4" style="width: 47px;" %)(% _mstvisible="5" %)
191 (((
192 (% _mstvisible="6" %)
193 (% _msthash="1817482" _msttexthash="4459" _mstvisible="8" %)**1**
194 )))|=(% _mstvisible="4" style="width: 51px;" %)(% _mstvisible="5" %)
195 (((
196 (% _mstvisible="6" %)
197 (% _msthash="1817483" _msttexthash="4732" _mstvisible="8" %)**4**
198 )))
199 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:97px" %)(% _mstvisible="5" %)
200 (((
201 (% _mstvisible="6" %)
202 (% _msthash="1817484" _msttexthash="60203" _mstvisible="8" %)**Value**
203 )))|(% _mstvisible="4" style="width:39px" %)(% _mstvisible="5" %)
204 (((
205 (% _mstvisible="6" %)
206 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo" _msthash="1817485" _msttexthash="22594" _mstvisible="7"]]
207 )))|(% _mstvisible="4" style="width:100px" %)(% _mstvisible="5" %)
208 (((
209 (% _mstvisible="6" %)
210 (((
211 (% _mstvisible="7" %)
212 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224742" _msttexthash="405769" _mstvisible="8"]]
213 )))
214 )))|(% _mstvisible="4" style="width:77px" %)(% _mstvisible="5" %)
215 (((
216 (% _mstvisible="6" %)
217 (((
218 (% _mstvisible="7" %)
219 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2224743" _msttexthash="105872" _mstvisible="8"]]
220 )))
221
222 (% _mstvisible="6" %)
223 (((
224 (% _mstvisible="7" %)
225 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224744" _msttexthash="117429" _mstvisible="8"]]
226 )))
227 )))|(% _mstvisible="4" style="width:47px" %)(% _mstvisible="5" %)
228 (((
229 (% _mstvisible="6" %)
230 [[Ext>>||anchor="H2.4.5Ext23" _msthash="1817486" _msttexthash="32331" _mstvisible="7"]] #
231 )))|(% _mstvisible="4" style="width:51px" %)(% _mstvisible="5" %)
232 (((
233 (% _mstvisible="6" %)
234 [[Ext value>>||anchor="H2.4.6Extvalue" _msthash="1817487" _msttexthash="116545" _mstvisible="7"]]
235 )))
236
237 * The First 6 bytes: has fix meanings for every LHT65N.
238 * The 7th byte (EXT #): defines the external sensor model.
239 * 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.)
240
241
242
243
244 === 2.4.1 Decoder in TTN V3 ===
245
246 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.
247
248 Below is the position to put the decoder and LHT65N decoder can be download from here:
249
250
251 [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0 >>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0||_msthash="315253" _msttexthash="3509064" _mstvisible="2"]]
252
253
254 [[image:image-20220522234118-10.png||_mstalt="451464" _mstvisible="3" height="353" width="729"]]
255
256
257
258
259 === 2.4.2 BAT-Battery Info ===
260
261 These two bytes of BAT include the battery state and the actually voltage
262
263 [[image:image-20220523152839-18.png||_mstalt="457613" _mstvisible="3"]]
264
265
266 [[image:image-20220522235639-1.png||_mstalt="431392" _mstvisible="3" height="139" width="727"]]
267
268
269 Check the battery voltage for LHT65N.
270
271 * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
272 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
273
274
275
276 === 2.4.3 Built-in Temperature ===
277
278 [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
279
280 * Temperature:  0x0ABB/100=27.47℃
281
282 [[image:image-20220522235639-3.png||_mstalt="432120" _mstvisible="3"]]
283
284 * Temperature:  (0xF5C6-65536)/100=-26.18℃
285
286
287 === 2.4.4 Built-in Humidity ===
288
289 [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
290
291 * Humidity:    0x025C/10=60.4%
292
293
294 === 2.4.5 Ext # ===
295
296 Bytes for External Sensor:
297
298 [[image:image-20220523152822-17.png||_mstalt="454545" _mstvisible="3"]]
299
300
301
302 === 2.4.6 Ext value ===
303
304 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
305
306
307 [[image:image-20220522235639-5.png||_mstalt="432848" _mstvisible="3"]]
308
309
310 * DS18B20 temp=0x0ADD/100=27.81℃
311
312 The last 2 bytes of data are meaningless
313
314 [[image:image-20220522235639-6.png||_mstalt="433212" _mstvisible="3"]]
315
316
317 * External temperature= (0xF54F-65536)/100=-27.37℃
318
319 The last 2 bytes of data are meaningless
320
321 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
322
323
324
325 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
326
327 (((
328 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:
329 )))
330
331 (((
332
333 )))
334
335 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
336 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 96px;" %)(% _mstvisible="5" %)
337 (((
338 (% _mstvisible="6" %)
339 (% _msthash="1817488" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
340 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
341 (((
342 (% _mstvisible="6" %)
343 (% _msthash="1817489" _msttexthash="4550" _mstvisible="8" %)**2**
344 )))|=(% _mstvisible="4" style="width: 99px;" %)(% _mstvisible="5" %)
345 (((
346 (% _mstvisible="6" %)
347 (% _msthash="1817490" _msttexthash="4550" _mstvisible="8" %)**2**
348 )))|=(% _mstvisible="4" style="width: 132px;" %)(% _mstvisible="5" %)
349 (((
350 (% _mstvisible="6" %)
351 (% _msthash="1817491" _msttexthash="4550" _mstvisible="8" %)**2**
352 )))|=(% _mstvisible="4" style="width: 54px;" %)(% _mstvisible="5" %)
353 (((
354 (% _mstvisible="6" %)
355 (% _msthash="1817492" _msttexthash="4459" _mstvisible="8" %)**1**
356 )))|=(% _mstvisible="4" style="width: 64px;" %)(% _mstvisible="5" %)
357 (((
358 (% _mstvisible="6" %)
359 (% _msthash="1817493" _msttexthash="4732" _mstvisible="8" %)**4**
360 )))
361 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:96px" %)(% _mstvisible="5" %)
362 (((
363 (% _mstvisible="6" %)
364 (% _msthash="1817494" _msttexthash="60203" _mstvisible="8" %)**Value**
365 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
366 (((
367 (% _mstvisible="6" %)
368 [[External temperature>>||anchor="H4.2SetExternalSensorMode" _msthash="1817495" _msttexthash="426517" _mstvisible="7"]]
369 )))|(% _mstvisible="4" style="width:99px" %)(% _mstvisible="5" %)
370 (((
371 (% _mstvisible="6" %)
372 (((
373 (% _mstvisible="7" %)
374 [[Built-In>>||anchor="H2.4.3Built-inTemperature" _msthash="2224745" _msttexthash="100464" _mstvisible="8"]]
375 )))
376
377 (% _mstvisible="6" %)
378 (((
379 (% _mstvisible="7" %)
380 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224746" _msttexthash="184041" _mstvisible="8"]]
381 )))
382 )))|(% _mstvisible="4" style="width:132px" %)(% _mstvisible="5" %)
383 (((
384 (% _mstvisible="6" %)
385 (((
386 (% _msthash="2224747" _msttexthash="136331" _mstvisible="7" %)
387 BAT Status &
388 )))
389
390 (% _mstvisible="6" %)
391 (((
392 (% _mstvisible="7" %)
393 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224748" _msttexthash="311181" _mstvisible="8"]]
394 )))
395 )))|(% _mstvisible="4" style="width:54px" %)(% _mstvisible="5" %)
396 (((
397 (% _msthash="1817496" _msttexthash="147225" _mstvisible="6" %)
398 Status & Ext
399 )))|(% _mstvisible="4" style="width:64px" %)(% _mstvisible="5" %)
400 (((
401 (% _mstvisible="6" %)
402 (((
403 (% _mstvisible="7" %)
404 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2224749" _msttexthash="227175" _mstvisible="8"]]
405 )))
406 )))
407
408 (% _mstvisible="1" %)
409 * (% _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**
410
411 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:469px" %)
412 (% _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]
413 (% _mstvisible="3" %)|(% _msthash="1230921" _msttexthash="60203" _mstvisible="4" style="width:65px" %)Value|(% _mstvisible="4" style="width:267px" %)(% _mstvisible="5" %)
414 (((
415 (% _msthash="1817497" _msttexthash="128427" _mstvisible="6" %)
416 BAT Status
417
418 (% _msthash="1817498" _msttexthash="472784" _mstvisible="6" %)
419 00(b): Ultra Low ( BAT <= 2.50v)
420
421 (% _msthash="1817499" _msttexthash="483678" _mstvisible="6" %)
422 01(b): Low  (2.50v <=BAT <= 2.55v)
423
424 (% _msthash="1817500" _msttexthash="440791" _mstvisible="6" %)
425 10(b): OK   (2.55v <= BAT <=2.65v)
426
427 (% _msthash="1817501" _msttexthash="334191" _mstvisible="6" %)
428 11(b): Good   (BAT >= 2.65v)
429 )))|(% _mstvisible="4" style="width:134px" %)(% _mstvisible="5" %)
430 (((
431 (% _mstvisible="6" %)
432 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="1817502" _msttexthash="311181" _mstvisible="7"]]
433
434 (% _mstvisible="6" %)
435
436 )))
437
438 * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
439
440 [[image:image-20220523152434-16.png||_mstalt="453921" _mstvisible="3"]]
441
442 * Poll Message Flag:  1: This message is a poll message reply, 0: means this is a normal uplink.
443 * 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.
444 * 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)
445
446
447
448 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
449
450 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
451
452 be used to power the external ADC sensor; user can control the power on time for this
453
454 sensor by setting:
455
456 AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)Time to power this sensor, from 0 ~~ 65535ms
457
458
459
460 == 2.5 Show data on Datacake ==
461
462 (((
463 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:
464 )))
465
466 (((
467
468 )))
469
470 (((
471 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
472 )))
473
474 (((
475 (% 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.
476 )))
477
478 (((
479
480 )))
481
482 (((
483 Add Datacake:
484 )))
485
486
487 [[image:image-20220523000825-7.png||_mstalt="429884" _mstvisible="3" height="262" width="583"]]
488
489
490
491 Select default key as Access Key:
492
493
494 [[image:image-20220523000825-8.png||_mstalt="430248" _mstvisible="3" height="453" width="406"]]
495
496
497 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/||_mstvisible="2"]]) , add LHT65 device.
498
499
500 [[image:image-20220523000825-9.png||_mstalt="430612" _mstvisible="3" height="366" width="392"]]
501
502
503 [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
504
505
506
507 == 2.6 Datalog Feature ==
508
509 (((
510 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.
511 )))
512
513
514
515 === 2.6.1 Ways to get datalog via LoRaWAN ===
516
517 There are two methods:
518
519 1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specify time range.
520 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.
521
522 === 2.6.2 Unix TimeStamp ===
523
524
525 LHT65N uses Unix TimeStamp format based on
526
527
528 [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
529
530
531
532 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
533
534 Below is the converter example
535
536 [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
537
538 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
539
540
541
542 === 2.6.3 Set Device Time ===
543
544 There are two ways to set device's time:
545
546 **~1. Through LoRaWAN MAC Command (Default settings)**
547
548 User need to set SYNCMOD=1 to enable sync time via MAC command.
549
550 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).
551
552 (% 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.
553
554
555 **2. Manually Set Time**
556
557 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
558
559
560
561 === 2.6.4 Poll sensor value ===
562
563 User can poll sensor value based on timestamps from the server. Below is the downlink command.
564
565 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
566
567
568 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.
569
570 For example, downlink command **31 5FC5F350 5FC6 0160 05**
571
572 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
573
574 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
575
576
577
578 === 2.6.5 Datalog Uplink payload ===
579
580 (% _msthash="315267" _msttexthash="2245087" _mstvisible="1" %)
581 The Datalog poll reply uplink will use below payload format.
582
583 (% _mstvisible="1" %)
584 (((
585 (% _mstvisible="2" %)
586 (% _msthash="506080" _msttexthash="451581" _mstvisible="4" %)**Retrieval data payload**
587 )))
588
589 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
590 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 93px;" %)(% _mstvisible="5" %)
591 (((
592 (% _mstvisible="6" %)
593 (((
594 (% _mstvisible="7" %)
595 (% _msthash="2224750" _msttexthash="161122" _mstvisible="9" %)**Size(bytes)**
596 )))
597 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
598 (((
599 (% _mstvisible="6" %)
600 (((
601 (% _mstvisible="7" %)
602 (% _msthash="2224751" _msttexthash="4550" _mstvisible="9" %)**2**
603 )))
604 )))|=(% _mstvisible="4" style="width: 102px;" %)(% _mstvisible="5" %)
605 (((
606 (% _mstvisible="6" %)
607 (((
608 (% _mstvisible="7" %)
609 (% _msthash="2224752" _msttexthash="4550" _mstvisible="9" %)**2**
610 )))
611 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
612 (((
613 (% _mstvisible="6" %)
614 (((
615 (% _mstvisible="7" %)
616 (% _msthash="2224753" _msttexthash="4550" _mstvisible="9" %)**2**
617 )))
618 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
619 (((
620 (% _mstvisible="6" %)
621 (((
622 (% _mstvisible="7" %)
623 (% _msthash="2224754" _msttexthash="4459" _mstvisible="9" %)**1**
624 )))
625 )))|=(% _mstvisible="4" style="width: 48px;" %)(% _mstvisible="5" %)
626 (((
627 (% _mstvisible="6" %)
628 (((
629 (% _mstvisible="7" %)
630 (% _msthash="2224755" _msttexthash="4732" _mstvisible="9" %)**4**
631 )))
632 )))
633 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:93px" %)(% _mstvisible="5" %)
634 (((
635 (% _mstvisible="6" %)
636 (((
637 (% _mstvisible="7" %)
638 (% _msthash="2224756" _msttexthash="60203" _mstvisible="9" %)**Value**
639 )))
640 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
641 (((
642 (% _mstvisible="6" %)
643 (((
644 (% _mstvisible="7" %)
645 [[External sensor data>>||anchor="H2.4.6Extvalue" _msthash="2224757" _msttexthash="386672" _mstvisible="8"]]
646 )))
647 )))|(% _mstvisible="4" style="width:102px" %)(% _mstvisible="5" %)
648 (((
649 (% _mstvisible="6" %)
650 (((
651 (% _mstvisible="7" %)
652 (((
653 (% _mstvisible="8" %)
654 [[Built In>>||anchor="H2.4.3Built-inTemperature" _msthash="2671864" _msttexthash="91065" _mstvisible="9"]]
655 )))
656 )))
657
658 (% _mstvisible="6" %)
659 (((
660 (% _mstvisible="7" %)
661 (((
662 (% _mstvisible="8" %)
663 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2671865" _msttexthash="184041" _mstvisible="9"]]
664 )))
665 )))
666 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
667 (((
668 (% _mstvisible="6" %)
669 (((
670 (% _mstvisible="7" %)
671 (((
672 (% _mstvisible="8" %)
673 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2671866" _msttexthash="105872" _mstvisible="9"]]
674 )))
675 )))
676
677 (% _mstvisible="6" %)
678 (((
679 (% _mstvisible="7" %)
680 (((
681 (% _mstvisible="8" %)
682 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2671867" _msttexthash="117429" _mstvisible="9"]]
683 )))
684 )))
685 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
686 (((
687 (% _mstvisible="6" %)
688 (((
689 (% _msthash="2224758" _msttexthash="390390" _mstvisible="7" %)
690 Poll message flag & Ext
691 )))
692 )))|(% _mstvisible="4" style="width:48px" %)(% _mstvisible="5" %)
693 (((
694 (% _mstvisible="6" %)
695 (((
696 (% _mstvisible="7" %)
697 (((
698 (% _mstvisible="8" %)
699 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2671868" _msttexthash="227175" _mstvisible="9"]]
700 )))
701 )))
702
703 (% _mstvisible="6" %)
704 (((
705 (% _mstvisible="7" %)
706 (((
707 (% _mstvisible="8" %)
708
709 )))
710 )))
711 )))
712
713 (% _mstvisible="1" %)
714 (% _msthash="315268" _msttexthash="390390" _mstvisible="3" %)**Poll message flag & Ext**
715
716 (% _mstvisible="1" %)
717 [[image:image-20220523152208-14.png||_mstalt="452920" _mstvisible="3"]]
718
719 (% _mstvisible="1" %)
720 (((
721 (% _mstvisible="2" %)
722 (((
723 (% _msthash="736723" _msttexthash="2005003" _mstvisible="3" %)
724 Poll Message Flag: 1: This message is a poll message reply.
725 )))
726 )))
727
728 (% _mstvisible="1" %)
729 * (% _mstvisible="3" %)
730 (((
731 (% _mstvisible="4" %)
732 (((
733 (% _msthash="1197157" _msttexthash="561548" _mstvisible="5" %)
734 Poll Message Flag is set to 1.
735 )))
736 )))
737 * (% _mstvisible="3" %)
738 (((
739 (% _mstvisible="4" %)
740 (((
741 (% _msthash="1197158" _msttexthash="9284964" _mstvisible="5" %)
742 Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
743 )))
744 )))
745
746 (% _mstvisible="1" %)
747 (((
748 (% _mstvisible="2" %)
749 (((
750 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
751
752
753 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
754 For example, in US915 band, the max payload for different DR is:
755 )))
756 )))
757
758 (% _mstvisible="1" %)
759 (((
760 (% _mstvisible="2" %)
761 (((
762 (% _msthash="736725" _msttexthash="1065532" _mstvisible="3" %)
763 a) DR0: max is 11 bytes so one entry of data
764 )))
765 )))
766
767 (% _mstvisible="1" %)
768 (((
769 (% _mstvisible="2" %)
770 (((
771 (% _msthash="736726" _msttexthash="3265665" _mstvisible="3" %)
772 b) DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
773 )))
774 )))
775
776 (% _mstvisible="1" %)
777 (((
778 (% _mstvisible="2" %)
779 (((
780 (% _msthash="736727" _msttexthash="1454115" _mstvisible="3" style="text-align: left;" %)
781 c) DR2: total payload includes 11 entries of data
782 )))
783 )))
784
785 (% _mstvisible="1" %)
786 (((
787 (% _mstvisible="2" %)
788 (((
789 (% _msthash="736728" _msttexthash="1483924" _mstvisible="3" style="text-align: left;" %)
790 d) DR3: total payload includes 22 entries of data.
791 )))
792 )))
793
794 (% _mstvisible="1" %)
795 (((
796 (% _mstvisible="2" %)
797 (((
798 (% _msthash="736729" _msttexthash="5848349" _mstvisible="3" style="text-align: left;" %)
799 If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0   
800 )))
801 )))
802
803
804 (% _mstvisible="1" style="text-align: left;" %)
805 (% _msthash="315269" _msttexthash="104767" _mstvisible="3" %)**Example:**
806
807 (% _msthash="315270" _msttexthash="913822" _mstvisible="1" style="text-align: left;" %)
808 If LHT65N has below data inside Flash:
809
810 (% _mstvisible="1" %)
811 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
812
813 (% _mstvisible="1" %)
814 (((
815 (% _msthash="506081" _msttexthash="1663961" _mstvisible="2" style="text-align: left;" %)
816 If user sends below downlink command: (% _mstvisible="3" style="background-color:yellow" %)3160065F9760066DA705
817 )))
818
819 (% _mstvisible="1" %)
820 (((
821 (% _msthash="506082" _msttexthash="1092494" _mstvisible="2" style="text-align: left;" %)
822 Where : Start time: 60065F97 = time 21/1/19 04:27:03
823 )))
824
825 (% _mstvisible="1" %)
826 (((
827 (% _msthash="506083" _msttexthash="737269" _mstvisible="2" style="text-align: left;" %)
828 Stop time 60066DA7= time 21/1/19 05:27:(% _msthash="903005" _msttexthash="9672" _mstvisible="2" %)03
829 )))
830
831 (% _mstvisible="1" %)
832 (((
833 (% _mstvisible="2" %)
834
835 )))
836
837 (% _mstvisible="1" %)
838 (((
839 (% _msthash="506084" _msttexthash="751218" _mstvisible="2" style="text-align: left;" %)
840 LHT65N will uplink this payload.
841 )))
842
843 (% _mstvisible="1" %)
844 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
845
846 (% _msthash="315271" _msttexthash="12012546" _mstvisible="1" style="text-align: left;" %)
847 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
848
849 (% _msthash="315237" _msttexthash="1385839" %)
850 Where the first 11 bytes is for the first entry:
851
852 (% _msthash="315238" _msttexthash="274846" %)
853 7FFF089801464160065F97
854
855 (% _msthash="315239" _msttexthash="617435" %)
856 Ext sensor data=0x7FFF/100=327.67
857
858 (% _msthash="315240" _msttexthash="270543" %)
859 Temp=0x0898/100=22.00
860
861 (% _msthash="315241" _msttexthash="211783" %)
862 Hum=0x0146/10=32.6
863
864 (% _msthash="315242" _msttexthash="1569776" %)
865 poll message flag & Ext=0x41,means reply data,Ext=1
866
867 (% _msthash="315243" _msttexthash="1120509" %)
868 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
869
870
871
872 == 2.7 Alarm Mode ==
873
874 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.
875
876 (% style="color:red" %)note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.
877
878 **AT COMMAND FOR ALARM MODE:**
879
880 (% _mstvisible="1" class="box infomessage" %)
881 (((
882 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled)
883
884 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
885
886 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
887
888 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
889
890 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
891 )))
892
893
894
895
896 == 2.8 LED Indicator ==
897
898 The LHT65 has a triple color LED which for easy showing different stage .
899
900 While user press ACT button, the LED will work as per LED status with ACT button.
901
902 In a normal working state:
903
904 * For each uplink, the BLUE LED or RED LED will blink once.
905 BLUE LED when external sensor is connected.
906 * RED LED when external sensor is not connected
907 * For each success downlink, the PURPLE LED will blink once
908
909
910
911
912 == 2.9 installation ==
913
914 (% _mstvisible="1" %)
915 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
916
917
918
919 = 3. Sensors and Accessories =
920
921 == 3.1 E2 Extension Cable ==
922
923 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
924
925 1m long breakout cable for LHT65N
926
927 [[image:image-20220619092421-3.png||height="371" width="529"]]
928
929
930
931
932 == 3.2 E3 Temperature Probe ==
933
934
935 [[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"]]
936
937
938 Temperature sensor with 2 meters cable long
939
940
941 * Resolution: 0.0625 °C
942 * ±0.5°C accuracy from -10°C to +85°C
943 * ±2°C accuracy from -55°C to +125°C
944 * Operating Range: -40 ~~ 125 °C
945 * Working voltage 2.35v ~~ 5v
946
947 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
948
949 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
950
951 * AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
952
953 * LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
954
955 There are two kinds of commands to configure LHT65N, they are:
956
957 * (% style="color:#4f81bd" %)**General Commands**.
958
959 These commands are to configure:
960
961 * General system settings like: uplink interval.
962
963 * LoRaWAN protocol & radio-related commands.
964
965 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]]
966
967 * (% style="color:#4f81bd" %)**Commands special design for LHT65N**
968
969 These commands are only valid for LHT65N, as below:
970
971
972 == 4.1 Set Transmit Interval Time ==
973
974 Feature: Change LoRaWAN End Node Transmit Interval.
975
976
977 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
978
979
980 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
981
982
983 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
984
985 Format: Command Code (0x01) followed by 3 bytes time value.
986
987 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
988
989 * **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
990
991 * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
992
993
994 == 4.2 Set External Sensor Mode ==
995
996 Feature: Change External Sensor Mode.
997
998 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
999
1000 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1001
1002 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1003
1004 Total bytes: 2 ~~ 5 bytes
1005
1006 **Example:**
1007
1008 * 0xA201: Set external sensor type to E1
1009
1010 * 0xA209: Same as AT+EXT=9
1011
1012 * 0xA20702003c,Same as AT+SETCNT=60
1013
1014
1015
1016 == 4.3 Enable/Disable uplink Temperature probe ID ==
1017
1018 Feature: If PID is enabled, device will send the temperature probe ID on:
1019
1020 * First Packet after OTAA Join
1021 * Every 24 hours since the first packet.
1022
1023 PID is default set to disable (0)
1024
1025
1026 (% style="color:#4f81bd" %)**AT Command:**
1027
1028
1029 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1030
1031
1032 (% style="color:#4f81bd" %)**Downlink Command:**
1033
1034
1035 * 0xA800  **~-~->** AT+PID=0
1036 * 0xA801     **~-~->** AT+PID=1
1037
1038
1039
1040 == 4.4 Set Password ==
1041
1042 Feature: Set device password, max 9 digits
1043
1044 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1045
1046
1047 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1048
1049
1050
1051 (% style="color:#4f81bd" %)**Downlink Command:**
1052
1053 No downlink command for this feature.
1054
1055
1056
1057 == 4.5 Quit AT Command ==
1058
1059
1060 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1061
1062
1063 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1064
1065
1066 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1067
1068
1069
1070 (% style="color:#4f81bd" %)**Downlink Command:**
1071
1072 No downlink command for this feature.
1073
1074
1075
1076 == 4.6 Set to sleep mode ==
1077
1078
1079 Feature: Set device to sleep mode
1080
1081 * AT+Sleep=0  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1082 * AT+Sleep=1 : Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1083
1084 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1085
1086
1087 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1088
1089
1090
1091 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1092
1093
1094 * There is no downlink command to set to Sleep mode.
1095
1096 == 4.7 Set system time ==
1097
1098
1099 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1100
1101
1102 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1103
1104
1105 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1106
1107
1108
1109 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1110
1111
1112 0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1113
1114
1115
1116 == 4.8 Set Time Sync Mode ==
1117
1118
1119 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1120
1121 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.
1122
1123 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1124
1125 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1126
1127
1128
1129 (% style="color:#4f81bd" %)**Downlink Command:**
1130
1131 0x28 01 ~/~/ Same As AT+SYNCMOD=1
1132 0x28 00 ~/~/ Same As AT+SYNCMOD=0
1133
1134
1135
1136 == 4.9 Set Time Sync Interval ==
1137
1138
1139 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1140
1141
1142 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1143
1144
1145 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1146
1147
1148
1149 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1150
1151
1152 0x29 0A ~/~/ Same as AT+SYNCTDC=0x0A
1153
1154
1155
1156 == 4.10 Print data entries base on page. ==
1157
1158 Feature: Print the sector data from start page to stop page (max is 416 pages).
1159
1160
1161 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1162
1163
1164 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1165
1166
1167
1168 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1169
1170
1171 No downlink commands for feature
1172
1173
1174
1175 == 4.11 Print last few data entries. ==
1176
1177 Feature: Print the last few data entries
1178
1179
1180 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1181
1182
1183 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1184
1185
1186 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1187
1188 No downlink commands for feature
1189
1190
1191
1192 == 4.12 Clear Flash Record ==
1193
1194 Feature: Clear flash storage for data log feature.
1195
1196
1197 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1198
1199 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1200
1201
1202 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1203
1204 * Example: 0xA301 ~/~/Same as AT+CLRDTA
1205
1206
1207
1208
1209 == 4.13 Auto Send None-ACK messages ==
1210
1211 (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
1212 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.
1213
1214 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1215
1216 (% _msthash="315396" _msttexthash="734682" _mstvisible="1" %)
1217 The default factory setting is 0
1218
1219 (% _mstvisible="1" border="1" style="background-color:#ffffcc; color:green; width:450px" %)
1220 (% _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**
1221 (% _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
1222
1223 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1224
1225 * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1226
1227
1228
1229 = 5. Battery & How to replace =
1230
1231 == 5.1 Battery Type ==
1232
1233 (((
1234 (((
1235 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.
1236 )))
1237 )))
1238
1239 (((
1240
1241 )))
1242
1243 (((
1244 (((
1245 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1246 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1247 )))
1248 )))
1249
1250 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1251
1252
1253 == 5.2 Replace Battery ==
1254
1255 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.
1256
1257 [[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"]]
1258
1259
1260 == 5.3 Battery Life Analyze ==
1261
1262 (((
1263 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:
1264 [[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]]
1265 )))
1266
1267 (((
1268
1269 )))
1270
1271 (((
1272 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]]
1273 )))
1274
1275
1276
1277 = 6. FAQ =
1278
1279 == 6.1 How to use AT Command? ==
1280
1281 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.
1282
1283 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1284
1285
1286 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1287
1288 (% _msthash="506062" _msttexthash="1187732" %)
1289 **✓ (% style="background-color:yellow" %)USB to TTL GND <~-~->GND(%%)**
1290
1291 (% _msthash="506063" _msttexthash="1158313" %)**✓  **(% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1292
1293 (% _msthash="506064" _msttexthash="1175629" %)**✓  **(% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1294
1295 (% _msthash="506065" _msttexthash="1164696" %)**✓  **(% style="background-color:yellow" %)**USB to TTL 3.3V <~-~-> D-**
1296
1297
1298 (((
1299 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.
1300 )))
1301
1302
1303 Input password and ATZ to activate LHT65N,As shown below:
1304
1305 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1306
1307
1308 (% _msthash="506066" _msttexthash="544869" %)
1309 AT Command List is as below:
1310
1311 (% _msthash="506067" _msttexthash="361920" %)
1312 AT+<CMD>? :  Help on <CMD>
1313
1314 (% _msthash="506068" _msttexthash="243061" %)
1315 AT+<CMD> :  Run <CMD>
1316
1317 (% _msthash="506069" _msttexthash="704197" %)
1318 AT+<CMD>=<value> :  Set the value
1319
1320 (% _msthash="506070" _msttexthash="455676" %)
1321 AT+<CMD>=? :  Get the value
1322
1323 (% _msthash="506071" _msttexthash="670553" %)
1324 AT+DEBUG:  Set more info output
1325
1326 (% _msthash="506072" _msttexthash="485888" %)
1327 ATZ:  Trig a reset of the MCU
1328
1329 (% _msthash="506073" _msttexthash="2068872" %)
1330 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1331
1332 (% _msthash="506074" _msttexthash="689169" %)
1333 AT+DEUI:  Get or Set the Device EUI
1334
1335 (% _msthash="506075" _msttexthash="960414" %)
1336 AT+DADDR:  Get or Set the Device Address
1337
1338 (% _msthash="506076" _msttexthash="1079897" %)
1339 AT+APPKEY:  Get or Set the Application Key
1340
1341 (% _msthash="506077" _msttexthash="1326143" %)
1342 AT+NWKSKEY:  Get or Set the Network Session Key
1343
1344 (% _msthash="506078" _msttexthash="1573000" %)
1345 AT+APPSKEY:  Get or Set the Application Session Key
1346
1347 (% _msthash="506079" _msttexthash="1041729" %)
1348 AT+APPEUI:  Get or Set the Application EUI
1349
1350 (% _msthash="506080" _msttexthash="2104206" %)
1351 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1352
1353 (% _msthash="506081" _msttexthash="3369288" %)
1354 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1355
1356 (% _msthash="506082" _msttexthash="1894529" %)
1357 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1358
1359 (% _msthash="506083" _msttexthash="3864172" %)
1360 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1361
1362 (% _msthash="506084" _msttexthash="1712204" %)
1363 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1364
1365 (% _msthash="506085" _msttexthash="1281202" %)
1366 AT+RX2FQ:  Get or Set the Rx2 window frequency
1367
1368 (% _msthash="506086" _msttexthash="2796781" %)
1369 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1370
1371 (% _msthash="506087" _msttexthash="3285165" %)
1372 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1373
1374 (% _msthash="506088" _msttexthash="3286179" %)
1375 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1376
1377 (% _msthash="506089" _msttexthash="4703803" %)
1378 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1379
1380 (% _msthash="506090" _msttexthash="4704999" %)
1381 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1382
1383 (% _msthash="506091" _msttexthash="1528683" %)
1384 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1385
1386 (% _msthash="506092" _msttexthash="757185" %)
1387 AT+NWKID:  Get or Set the Network ID
1388
1389 (% _msthash="506093" _msttexthash="1156597" %)
1390 AT+FCU:  Get or Set the Frame Counter Uplink
1391
1392 (% _msthash="506094" _msttexthash="1273987" %)
1393 AT+FCD:  Get or Set the Frame Counter Downlink
1394
1395 (% _msthash="506095" _msttexthash="859222" %)
1396 AT+CLASS:  Get or Set the Device Class
1397
1398 (% _msthash="506096" _msttexthash="384852" %)
1399 AT+JOIN:  Join network
1400
1401 (% _msthash="506097" _msttexthash="548626" %)
1402 AT+NJS:  Get the join status
1403
1404 (% _msthash="506098" _msttexthash="2546206" %)
1405 AT+SENDB:  Send hexadecimal data along with the application port
1406
1407 (% _msthash="506099" _msttexthash="1932307" %)
1408 AT+SEND:  Send text data along with the application port
1409
1410 (% _msthash="506100" _msttexthash="3560557" %)
1411 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1412
1413 (% _msthash="506101" _msttexthash="1429701" %)
1414 AT+RECV:  Print last received data in raw format
1415
1416 (% _msthash="506102" _msttexthash="1735981" %)
1417 AT+VER:  Get current image version and Frequency Band
1418
1419 (% _msthash="506103" _msttexthash="1189474" %)
1420 AT+CFM:  Get or Set the confirmation mode (0-1)
1421
1422 (% _msthash="506104" _msttexthash="1718210" %)
1423 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1424
1425 (% _msthash="506105" _msttexthash="1339403" %)
1426 AT+SNR:  Get the SNR of the last received packet
1427
1428 (% _msthash="506106" _msttexthash="1452009" %)
1429 AT+RSSI:  Get the RSSI of the last received packet
1430
1431 (% _msthash="506107" _msttexthash="2768142" %)
1432 AT+TDC:  Get or set the application data transmission interval in ms
1433
1434 (% _msthash="506108" _msttexthash="1083914" %)
1435 AT+PORT:  Get or set the application port
1436
1437 (% _msthash="506109" _msttexthash="622440" %)
1438 AT+DISAT:  Disable AT commands
1439
1440 (% _msthash="506110" _msttexthash="868361" %)
1441 AT+PWORD: Set password, max 9 digits
1442
1443 (% _msthash="506111" _msttexthash="2210299" %)
1444 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1445
1446 (% _msthash="506112" _msttexthash="2113462" %)
1447 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1448
1449 (% _msthash="506113" _msttexthash="2087423" %)
1450 AT+PDTA:  Print the sector data from start page to stop page
1451
1452 (% _msthash="506114" _msttexthash="1063127" %)
1453 AT+PLDTA:  Print the last few sets of data
1454
1455 (% _msthash="506115" _msttexthash="1999426" %)
1456 AT+CLRDTA:  Clear the storage, record position back to 1st
1457
1458 (% _msthash="506116" _msttexthash="442130" %)
1459 AT+SLEEP:  Set sleep mode
1460
1461 (% _msthash="506117" _msttexthash="1080222" %)
1462 AT+EXT:  Get or Set external sensor model
1463
1464 (% _msthash="506118" _msttexthash="1309490" %)
1465 AT+BAT:  Get the current battery voltage in mV
1466
1467 (% _msthash="506119" _msttexthash="813891" %)
1468 AT+CFG:  Print all configurations
1469
1470 (% _msthash="506120" _msttexthash="551707" %)
1471 AT+WMOD:  Get or Set Work Mode
1472
1473 (% _msthash="506121" _msttexthash="2631499" %)
1474 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1475
1476 (% _msthash="506122" _msttexthash="3907150" %)
1477 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1478
1479 (% _msthash="506123" _msttexthash="854620" %)
1480 AT+SETCNT:  Set the count at present
1481
1482 (% _msthash="506124" _msttexthash="2554877" %)
1483 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1484
1485 (% _msthash="506125" _msttexthash="771849" %)
1486 AT+RPL:  Get or set response level
1487
1488 (% _msthash="506126" _msttexthash="1484314" %)
1489 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1490
1491 (% _msthash="506127" _msttexthash="741728" %)
1492 AT+LEAPSEC:  Get or Set Leap Second
1493
1494 (% _msthash="506128" _msttexthash="1694017" %)
1495 AT+SYNCMOD:  Get or Set time synchronization method
1496
1497 (% _msthash="506129" _msttexthash="2235948" %)
1498 AT+SYNCTDC:  Get or set time synchronization interval in day
1499
1500 (% _msthash="506130" _msttexthash="425542" %)
1501 AT+PID:  Get or set the PID
1502
1503
1504 == 6.2 Where to use AT commands and Downlink commands ==
1505
1506 (% _msthash="506131" _msttexthash="14585714" %)
1507 AT commands：
1508
1509 [[image:image-20220620153708-1.png||height="603" width="723"]]
1510
1511 (% _msthash="506132" _msttexthash="337922" %)
1512 Downlink commands:
1513
1514
1515 (% _msthash="506133" _msttexthash="33046" %)
1516 **TTN:**
1517
1518 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1519
1520
1521 (% _msthash="506134" _msttexthash="11113791" %)
1522 **Helium：**
1523
1524 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1525
1526
1527 (% _msthash="506135" _msttexthash="4159844" %)
1528 **Chirpstack:The downlink window will not be displayed until the network is accessed**
1529
1530 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1531
1532 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1533
1534
1535 (% _msthash="506136" _msttexthash="39286" %)
1536 **Aws:**
1537
1538 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1539
1540
1541
1542 == 6.3 How to change the uplink interval？ ==
1543
1544 [[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"]]
1545
1546
1547
1548 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1549
1550 [[image:image-20220615153355-1.png]]
1551
1552 [[image:1655802313617-381.png]]
1553
1554
1555 (((
1556 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.
1557 )))
1558
1559
1560 Input password and ATZ to activate LHT65N,As shown below:
1561
1562 [[image:image-20220615154519-3.png||height="672" width="807"]]
1563
1564
1565
1566 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1567
1568
1569 [[image:image-20220615153355-1.png]]
1570
1571
1572 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1573
1574 [[image:image-20220615170542-5.png]]
1575
1576
1577 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1578
1579 (% _msthash="506146" _msttexthash="52173160" %)
1580 First connect the four lines；(% style="display:none" %)
1581
1582 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1583
1584
1585 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1586
1587 [[image:image-20220621170938-2.png]]
1588
1589
1590 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1591
1592 [[image:image-20220615171334-6.png]]
1593
1594
1595 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1596
1597
1598 When this interface appears, it indicates that the download has been completed.
1599
1600 [[image:image-20220620160723-8.png]]
1601
1602
1603 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1604
1605
1606
1607 = 7. Order Info =
1608
1609
1610 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
1611
1612 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1613
1614 (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1615
1616 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1617
1618 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1619
1620 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1621
1622 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1623
1624 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1625
1626 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1627
1628 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1629
1630 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1631
1632 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1633
1634
1635
1636
1637 = 8. Packing Info =
1638
1639
1640 **Package Includes**:
1641
1642 * LHT65N Temperature & Humidity Sensor x 1
1643
1644 *Optional external sensor
1645
1646
1647 **Dimension and weight**:
1648
1649 * Device Size:  10 x 10 x 3.5 cm
1650
1651 * Device Weight: 120.5g
1652
1653
1654
1655 = 9. Reference material =
1656
1657 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1658
1659
1660 = 10. FCC Warning =
1661
1662 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1663
1664 (1) This device may not cause harmful interference；
1665
1666 (2) this device must accept any interference received, including interference that may cause undesired operation.