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Version 170.22 by Xiaoling on 2022/06/22 11:07
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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
523
524
525 === 2.6.2 Unix TimeStamp ===
526
527
528 LHT65N uses Unix TimeStamp format based on
529
530
531 [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
532
533
534
535 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
536
537 Below is the converter example
538
539 [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
540
541 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
542
543
544
545 === 2.6.3 Set Device Time ===
546
547 There are two ways to set device's time:
548
549 **~1. Through LoRaWAN MAC Command (Default settings)**
550
551 User need to set SYNCMOD=1 to enable sync time via MAC command.
552
553 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).
554
555 (% 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.
556
557
558 **2. Manually Set Time**
559
560 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
561
562
563
564 === 2.6.4 Poll sensor value ===
565
566 User can poll sensor value based on timestamps from the server. Below is the downlink command.
567
568 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
569
570
571 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.
572
573 For example, downlink command **31 5FC5F350 5FC6 0160 05**
574
575 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
576
577 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
578
579
580
581 === 2.6.5 Datalog Uplink payload ===
582
583 (% _msthash="315267" _msttexthash="2245087" _mstvisible="1" %)
584 The Datalog poll reply uplink will use below payload format.
585
586 (% _mstvisible="1" %)
587 (((
588 (% _mstvisible="2" %)
589 (% _msthash="506080" _msttexthash="451581" _mstvisible="4" %)**Retrieval data payload**
590 )))
591
592 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
593 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 93px;" %)(% _mstvisible="5" %)
594 (((
595 (% _mstvisible="6" %)
596 (((
597 (% _mstvisible="7" %)
598 (% _msthash="2224750" _msttexthash="161122" _mstvisible="9" %)**Size(bytes)**
599 )))
600 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
601 (((
602 (% _mstvisible="6" %)
603 (((
604 (% _mstvisible="7" %)
605 (% _msthash="2224751" _msttexthash="4550" _mstvisible="9" %)**2**
606 )))
607 )))|=(% _mstvisible="4" style="width: 102px;" %)(% _mstvisible="5" %)
608 (((
609 (% _mstvisible="6" %)
610 (((
611 (% _mstvisible="7" %)
612 (% _msthash="2224752" _msttexthash="4550" _mstvisible="9" %)**2**
613 )))
614 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
615 (((
616 (% _mstvisible="6" %)
617 (((
618 (% _mstvisible="7" %)
619 (% _msthash="2224753" _msttexthash="4550" _mstvisible="9" %)**2**
620 )))
621 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
622 (((
623 (% _mstvisible="6" %)
624 (((
625 (% _mstvisible="7" %)
626 (% _msthash="2224754" _msttexthash="4459" _mstvisible="9" %)**1**
627 )))
628 )))|=(% _mstvisible="4" style="width: 48px;" %)(% _mstvisible="5" %)
629 (((
630 (% _mstvisible="6" %)
631 (((
632 (% _mstvisible="7" %)
633 (% _msthash="2224755" _msttexthash="4732" _mstvisible="9" %)**4**
634 )))
635 )))
636 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:93px" %)(% _mstvisible="5" %)
637 (((
638 (% _mstvisible="6" %)
639 (((
640 (% _mstvisible="7" %)
641 (% _msthash="2224756" _msttexthash="60203" _mstvisible="9" %)**Value**
642 )))
643 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
644 (((
645 (% _mstvisible="6" %)
646 (((
647 (% _mstvisible="7" %)
648 [[External sensor data>>||anchor="H2.4.6Extvalue" _msthash="2224757" _msttexthash="386672" _mstvisible="8"]]
649 )))
650 )))|(% _mstvisible="4" style="width:102px" %)(% _mstvisible="5" %)
651 (((
652 (% _mstvisible="6" %)
653 (((
654 (% _mstvisible="7" %)
655 (((
656 (% _mstvisible="8" %)
657 [[Built In>>||anchor="H2.4.3Built-inTemperature" _msthash="2671864" _msttexthash="91065" _mstvisible="9"]]
658 )))
659 )))
660
661 (% _mstvisible="6" %)
662 (((
663 (% _mstvisible="7" %)
664 (((
665 (% _mstvisible="8" %)
666 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2671865" _msttexthash="184041" _mstvisible="9"]]
667 )))
668 )))
669 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
670 (((
671 (% _mstvisible="6" %)
672 (((
673 (% _mstvisible="7" %)
674 (((
675 (% _mstvisible="8" %)
676 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2671866" _msttexthash="105872" _mstvisible="9"]]
677 )))
678 )))
679
680 (% _mstvisible="6" %)
681 (((
682 (% _mstvisible="7" %)
683 (((
684 (% _mstvisible="8" %)
685 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2671867" _msttexthash="117429" _mstvisible="9"]]
686 )))
687 )))
688 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
689 (((
690 (% _mstvisible="6" %)
691 (((
692 (% _msthash="2224758" _msttexthash="390390" _mstvisible="7" %)
693 Poll message flag & Ext
694 )))
695 )))|(% _mstvisible="4" style="width:48px" %)(% _mstvisible="5" %)
696 (((
697 (% _mstvisible="6" %)
698 (((
699 (% _mstvisible="7" %)
700 (((
701 (% _mstvisible="8" %)
702 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2671868" _msttexthash="227175" _mstvisible="9"]]
703 )))
704 )))
705
706 (% _mstvisible="6" %)
707 (((
708 (% _mstvisible="7" %)
709 (((
710 (% _mstvisible="8" %)
711
712 )))
713 )))
714 )))
715
716 (% _mstvisible="1" %)
717 (% _msthash="315268" _msttexthash="390390" _mstvisible="3" %)**Poll message flag & Ext**
718
719 (% _mstvisible="1" %)
720 [[image:image-20220523152208-14.png||_mstalt="452920" _mstvisible="3"]]
721
722 (% _mstvisible="1" %)
723 (((
724 (% _mstvisible="2" %)
725 (((
726 (% _msthash="736723" _msttexthash="2005003" _mstvisible="3" %)
727 Poll Message Flag: 1: This message is a poll message reply.
728 )))
729 )))
730
731 (% _mstvisible="1" %)
732 * (% _mstvisible="3" %)
733 (((
734 (% _mstvisible="4" %)
735 (((
736 (% _msthash="1197157" _msttexthash="561548" _mstvisible="5" %)
737 Poll Message Flag is set to 1.
738 )))
739 )))
740 * (% _mstvisible="3" %)
741 (((
742 (% _mstvisible="4" %)
743 (((
744 (% _msthash="1197158" _msttexthash="9284964" _mstvisible="5" %)
745 Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
746 )))
747 )))
748
749 (% _mstvisible="1" %)
750 (((
751 (% _mstvisible="2" %)
752 (((
753 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
754
755
756 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
757 For example, in US915 band, the max payload for different DR is:
758 )))
759 )))
760
761 (% _mstvisible="1" %)
762 (((
763 (% _mstvisible="2" %)
764 (((
765 (% _msthash="736725" _msttexthash="1065532" _mstvisible="3" %)
766 a) DR0: max is 11 bytes so one entry of data
767 )))
768 )))
769
770 (% _mstvisible="1" %)
771 (((
772 (% _mstvisible="2" %)
773 (((
774 (% _msthash="736726" _msttexthash="3265665" _mstvisible="3" %)
775 b) DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
776 )))
777 )))
778
779 (% _mstvisible="1" %)
780 (((
781 (% _mstvisible="2" %)
782 (((
783 (% _msthash="736727" _msttexthash="1454115" _mstvisible="3" style="text-align: left;" %)
784 c) DR2: total payload includes 11 entries of data
785 )))
786 )))
787
788 (% _mstvisible="1" %)
789 (((
790 (% _mstvisible="2" %)
791 (((
792 (% _msthash="736728" _msttexthash="1483924" _mstvisible="3" style="text-align: left;" %)
793 d) DR3: total payload includes 22 entries of data.
794 )))
795 )))
796
797 (% _mstvisible="1" %)
798 (((
799 (% _mstvisible="2" %)
800 (((
801 (% _msthash="736729" _msttexthash="5848349" _mstvisible="3" style="text-align: left;" %)
802 If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0   
803 )))
804 )))
805
806
807 (% _mstvisible="1" style="text-align: left;" %)
808 (% _msthash="315269" _msttexthash="104767" _mstvisible="3" %)**Example:**
809
810 (% _msthash="315270" _msttexthash="913822" _mstvisible="1" style="text-align: left;" %)
811 If LHT65N has below data inside Flash:
812
813 (% _mstvisible="1" %)
814 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
815
816 (% _mstvisible="1" %)
817 (((
818 (% _msthash="506081" _msttexthash="1663961" _mstvisible="2" style="text-align: left;" %)
819 If user sends below downlink command: (% _mstvisible="3" style="background-color:yellow" %)3160065F9760066DA705
820 )))
821
822 (% _mstvisible="1" %)
823 (((
824 (% _msthash="506082" _msttexthash="1092494" _mstvisible="2" style="text-align: left;" %)
825 Where : Start time: 60065F97 = time 21/1/19 04:27:03
826 )))
827
828 (% _mstvisible="1" %)
829 (((
830 (% _msthash="506083" _msttexthash="737269" _mstvisible="2" style="text-align: left;" %)
831 Stop time 60066DA7= time 21/1/19 05:27:(% _msthash="903005" _msttexthash="9672" _mstvisible="2" %)03
832 )))
833
834 (% _mstvisible="1" %)
835 (((
836 (% _mstvisible="2" %)
837
838 )))
839
840 (% _mstvisible="1" %)
841 (((
842 (% _msthash="506084" _msttexthash="751218" _mstvisible="2" style="text-align: left;" %)
843 LHT65N will uplink this payload.
844 )))
845
846 (% _mstvisible="1" %)
847 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
848
849 (% _msthash="315271" _msttexthash="12012546" _mstvisible="1" style="text-align: left;" %)
850 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
851
852 (% _msthash="315237" _msttexthash="1385839" %)
853 Where the first 11 bytes is for the first entry:
854
855 (% _msthash="315238" _msttexthash="274846" %)
856 7FFF089801464160065F97
857
858 (% _msthash="315239" _msttexthash="617435" %)
859 Ext sensor data=0x7FFF/100=327.67
860
861 (% _msthash="315240" _msttexthash="270543" %)
862 Temp=0x0898/100=22.00
863
864 (% _msthash="315241" _msttexthash="211783" %)
865 Hum=0x0146/10=32.6
866
867 (% _msthash="315242" _msttexthash="1569776" %)
868 poll message flag & Ext=0x41,means reply data,Ext=1
869
870 (% _msthash="315243" _msttexthash="1120509" %)
871 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
872
873
874
875 == 2.7 Alarm Mode ==
876
877 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.
878
879 (% style="color:red" %)Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.
880
881 **AT COMMAND FOR ALARM MODE:**
882
883 (% _mstvisible="1" class="box infomessage" %)
884 (((
885 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled)
886
887 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
888
889 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
890
891 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
892
893 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
894 )))
895
896
897
898
899 == 2.8 LED Indicator ==
900
901 The LHT65 has a triple color LED which for easy showing different stage .
902
903 While user press ACT button, the LED will work as per LED status with ACT button.
904
905 In a normal working state:
906
907 * For each uplink, the BLUE LED or RED LED will blink once.
908 BLUE LED when external sensor is connected.
909 * RED LED when external sensor is not connected
910 * For each success downlink, the PURPLE LED will blink once
911
912
913
914
915 == 2.9 installation ==
916
917 (% _mstvisible="1" %)
918 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
919
920
921
922 = 3. Sensors and Accessories =
923
924 == 3.1 E2 Extension Cable ==
925
926 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
927
928 1m long breakout cable for LHT65N
929
930 [[image:image-20220619092421-3.png||height="371" width="529"]]
931
932
933
934
935 == 3.2 E3 Temperature Probe ==
936
937
938 [[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"]]
939
940
941 Temperature sensor with 2 meters cable long
942
943 * Resolution: 0.0625 °C
944 * ±0.5°C accuracy from -10°C to +85°C
945 * ±2°C accuracy from -55°C to +125°C
946 * Operating Range: -40 ~~ 125 °C
947 * Working voltage 2.35v ~~ 5v
948
949
950
951
952 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
953
954 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
955
956 * AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
957
958 * LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
959
960 There are two kinds of commands to configure LHT65N, they are:
961
962 * (% style="color:#4f81bd" %)**General Commands**.
963
964 These commands are to configure:
965
966 1. General system settings like: uplink interval.
967 1. LoRaWAN protocol & radio-related commands.
968
969 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]]
970
971 * (% style="color:#4f81bd" %)**Commands special design for LHT65N**
972
973 These commands are only valid for LHT65N, as below:
974
975
976 == 4.1 Set Transmit Interval Time ==
977
978 Feature: Change LoRaWAN End Node Transmit Interval.
979
980 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
981
982 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
983
984
985 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
986
987 Format: Command Code (0x01) followed by 3 bytes time value.
988
989 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
990
991 * **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
992
993 * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
994
995
996 == 4.2 Set External Sensor Mode ==
997
998 Feature: Change External Sensor Mode.
999
1000 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1001
1002 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1003
1004
1005 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1006
1007 Total bytes: 2 ~~ 5 bytes
1008
1009 **Example:**
1010
1011 * 0xA201: Set external sensor type to E1
1012
1013 * 0xA209: Same as AT+EXT=9
1014
1015 * 0xA20702003c: Same as AT+SETCNT=60
1016
1017
1018
1019 == 4.3 Enable/Disable uplink Temperature probe ID ==
1020
1021 (((
1022 Feature: If PID is enabled, device will send the temperature probe ID on:
1023 )))
1024
1025 * (((
1026 First Packet after OTAA Join
1027 )))
1028 * (((
1029 Every 24 hours since the first packet.
1030 )))
1031
1032 (((
1033 PID is default set to disable (0)
1034 )))
1035
1036 (% style="color:#4f81bd" %)**AT Command:**
1037
1038 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1039
1040
1041 (% style="color:#4f81bd" %)**Downlink Command:**
1042
1043 * **0xA800**  **~-~->** AT+PID=0
1044 * **0xA801**     **~-~->** AT+PID=1
1045
1046
1047
1048 == 4.4 Set Password ==
1049
1050 Feature: Set device password, max 9 digits
1051
1052 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1053
1054 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1055
1056
1057 (% style="color:#4f81bd" %)**Downlink Command:**
1058
1059 No downlink command for this feature.
1060
1061
1062
1063 == 4.5 Quit AT Command ==
1064
1065 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1066
1067 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1068
1069 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1070
1071
1072 (% style="color:#4f81bd" %)**Downlink Command:**
1073
1074 No downlink command for this feature.
1075
1076
1077
1078 == 4.6 Set to sleep mode ==
1079
1080 Feature: Set device to sleep mode
1081
1082 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1083 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1084
1085 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1086
1087 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1088
1089
1090 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1091
1092 * There is no downlink command to set to Sleep mode.
1093
1094
1095
1096
1097 == 4.7 Set system time ==
1098
1099 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1100
1101 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1102
1103 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1104
1105
1106 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1107
1108 0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1109
1110
1111
1112 == 4.8 Set Time Sync Mode ==
1113
1114 (((
1115 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1116 )))
1117
1118 (((
1119 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.
1120 )))
1121
1122 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1123
1124 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1125
1126
1127 (% style="color:#4f81bd" %)**Downlink Command:**
1128
1129 0x28 01 ~/~/ Same As AT+SYNCMOD=1
1130 0x28 00 ~/~/ Same As AT+SYNCMOD=0
1131
1132
1133
1134 == 4.9 Set Time Sync Interval ==
1135
1136 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1137
1138 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1139
1140 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1141
1142
1143 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1144
1145 **0x29 0A** ~/~/ Same as AT+SYNCTDC=0x0A
1146
1147
1148
1149 == 4.10 Print data entries base on page. ==
1150
1151 Feature: Print the sector data from start page to stop page (max is 416 pages).
1152
1153 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1154
1155 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1156
1157
1158 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1159
1160 No downlink commands for feature
1161
1162
1163
1164 == 4.11 Print last few data entries. ==
1165
1166 Feature: Print the last few data entries
1167
1168 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1169
1170 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1171
1172
1173 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1174
1175 No downlink commands for feature
1176
1177
1178
1179 == 4.12 Clear Flash Record ==
1180
1181 Feature: Clear flash storage for data log feature.
1182
1183
1184 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1185
1186 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1187
1188
1189 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1190
1191 * Example: 0xA301 ~/~/Same as AT+CLRDTA
1192
1193
1194
1195
1196 == 4.13 Auto Send None-ACK messages ==
1197
1198 (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
1199 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.
1200
1201 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1202
1203 (% _msthash="315396" _msttexthash="734682" _mstvisible="1" %)
1204 The default factory setting is 0
1205
1206 (% _mstvisible="1" border="1" style="background-color:#ffffcc; color:green; width:450px" %)
1207 (% _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**
1208 (% _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
1209
1210
1211 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1212
1213 * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1214
1215
1216
1217 = 5. Battery & How to replace =
1218
1219 == 5.1 Battery Type ==
1220
1221 (((
1222 (((
1223 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.
1224 )))
1225 )))
1226
1227 (((
1228
1229 )))
1230
1231 (((
1232 (((
1233 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1234 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1235 )))
1236 )))
1237
1238 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1239
1240
1241 == 5.2 Replace Battery ==
1242
1243 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.
1244
1245 [[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"]]
1246
1247
1248 == 5.3 Battery Life Analyze ==
1249
1250 (((
1251 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:
1252 [[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]]
1253 )))
1254
1255 (((
1256
1257 )))
1258
1259 (((
1260 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]]
1261 )))
1262
1263
1264
1265 = 6. FAQ =
1266
1267 == 6.1 How to use AT Command? ==
1268
1269 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.
1270
1271 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1272
1273
1274 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1275
1276 (% _msthash="506062" _msttexthash="1187732" %)
1277 **✓ (% style="background-color:yellow" %)USB to TTL GND <~-~->GND(%%)**
1278
1279 (% _msthash="506063" _msttexthash="1158313" %)**✓  **(% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1280
1281 (% _msthash="506064" _msttexthash="1175629" %)**✓  **(% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1282
1283 (% _msthash="506065" _msttexthash="1164696" %)**✓  **(% style="background-color:yellow" %)**USB to TTL 3.3V <~-~-> D-**
1284
1285
1286 (((
1287 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.
1288 )))
1289
1290
1291 Input password and ATZ to activate LHT65N,As shown below:
1292
1293 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1294
1295
1296 (% _msthash="506066" _msttexthash="544869" %)
1297 AT Command List is as below:
1298
1299 (% _msthash="506067" _msttexthash="361920" %)
1300 AT+<CMD>? :  Help on <CMD>
1301
1302 (% _msthash="506068" _msttexthash="243061" %)
1303 AT+<CMD> :  Run <CMD>
1304
1305 (% _msthash="506069" _msttexthash="704197" %)
1306 AT+<CMD>=<value> :  Set the value
1307
1308 (% _msthash="506070" _msttexthash="455676" %)
1309 AT+<CMD>=? :  Get the value
1310
1311 (% _msthash="506071" _msttexthash="670553" %)
1312 AT+DEBUG:  Set more info output
1313
1314 (% _msthash="506072" _msttexthash="485888" %)
1315 ATZ:  Trig a reset of the MCU
1316
1317 (% _msthash="506073" _msttexthash="2068872" %)
1318 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1319
1320 (% _msthash="506074" _msttexthash="689169" %)
1321 AT+DEUI:  Get or Set the Device EUI
1322
1323 (% _msthash="506075" _msttexthash="960414" %)
1324 AT+DADDR:  Get or Set the Device Address
1325
1326 (% _msthash="506076" _msttexthash="1079897" %)
1327 AT+APPKEY:  Get or Set the Application Key
1328
1329 (% _msthash="506077" _msttexthash="1326143" %)
1330 AT+NWKSKEY:  Get or Set the Network Session Key
1331
1332 (% _msthash="506078" _msttexthash="1573000" %)
1333 AT+APPSKEY:  Get or Set the Application Session Key
1334
1335 (% _msthash="506079" _msttexthash="1041729" %)
1336 AT+APPEUI:  Get or Set the Application EUI
1337
1338 (% _msthash="506080" _msttexthash="2104206" %)
1339 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1340
1341 (% _msthash="506081" _msttexthash="3369288" %)
1342 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1343
1344 (% _msthash="506082" _msttexthash="1894529" %)
1345 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1346
1347 (% _msthash="506083" _msttexthash="3864172" %)
1348 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1349
1350 (% _msthash="506084" _msttexthash="1712204" %)
1351 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1352
1353 (% _msthash="506085" _msttexthash="1281202" %)
1354 AT+RX2FQ:  Get or Set the Rx2 window frequency
1355
1356 (% _msthash="506086" _msttexthash="2796781" %)
1357 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1358
1359 (% _msthash="506087" _msttexthash="3285165" %)
1360 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1361
1362 (% _msthash="506088" _msttexthash="3286179" %)
1363 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1364
1365 (% _msthash="506089" _msttexthash="4703803" %)
1366 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1367
1368 (% _msthash="506090" _msttexthash="4704999" %)
1369 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1370
1371 (% _msthash="506091" _msttexthash="1528683" %)
1372 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1373
1374 (% _msthash="506092" _msttexthash="757185" %)
1375 AT+NWKID:  Get or Set the Network ID
1376
1377 (% _msthash="506093" _msttexthash="1156597" %)
1378 AT+FCU:  Get or Set the Frame Counter Uplink
1379
1380 (% _msthash="506094" _msttexthash="1273987" %)
1381 AT+FCD:  Get or Set the Frame Counter Downlink
1382
1383 (% _msthash="506095" _msttexthash="859222" %)
1384 AT+CLASS:  Get or Set the Device Class
1385
1386 (% _msthash="506096" _msttexthash="384852" %)
1387 AT+JOIN:  Join network
1388
1389 (% _msthash="506097" _msttexthash="548626" %)
1390 AT+NJS:  Get the join status
1391
1392 (% _msthash="506098" _msttexthash="2546206" %)
1393 AT+SENDB:  Send hexadecimal data along with the application port
1394
1395 (% _msthash="506099" _msttexthash="1932307" %)
1396 AT+SEND:  Send text data along with the application port
1397
1398 (% _msthash="506100" _msttexthash="3560557" %)
1399 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1400
1401 (% _msthash="506101" _msttexthash="1429701" %)
1402 AT+RECV:  Print last received data in raw format
1403
1404 (% _msthash="506102" _msttexthash="1735981" %)
1405 AT+VER:  Get current image version and Frequency Band
1406
1407 (% _msthash="506103" _msttexthash="1189474" %)
1408 AT+CFM:  Get or Set the confirmation mode (0-1)
1409
1410 (% _msthash="506104" _msttexthash="1718210" %)
1411 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1412
1413 (% _msthash="506105" _msttexthash="1339403" %)
1414 AT+SNR:  Get the SNR of the last received packet
1415
1416 (% _msthash="506106" _msttexthash="1452009" %)
1417 AT+RSSI:  Get the RSSI of the last received packet
1418
1419 (% _msthash="506107" _msttexthash="2768142" %)
1420 AT+TDC:  Get or set the application data transmission interval in ms
1421
1422 (% _msthash="506108" _msttexthash="1083914" %)
1423 AT+PORT:  Get or set the application port
1424
1425 (% _msthash="506109" _msttexthash="622440" %)
1426 AT+DISAT:  Disable AT commands
1427
1428 (% _msthash="506110" _msttexthash="868361" %)
1429 AT+PWORD: Set password, max 9 digits
1430
1431 (% _msthash="506111" _msttexthash="2210299" %)
1432 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1433
1434 (% _msthash="506112" _msttexthash="2113462" %)
1435 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1436
1437 (% _msthash="506113" _msttexthash="2087423" %)
1438 AT+PDTA:  Print the sector data from start page to stop page
1439
1440 (% _msthash="506114" _msttexthash="1063127" %)
1441 AT+PLDTA:  Print the last few sets of data
1442
1443 (% _msthash="506115" _msttexthash="1999426" %)
1444 AT+CLRDTA:  Clear the storage, record position back to 1st
1445
1446 (% _msthash="506116" _msttexthash="442130" %)
1447 AT+SLEEP:  Set sleep mode
1448
1449 (% _msthash="506117" _msttexthash="1080222" %)
1450 AT+EXT:  Get or Set external sensor model
1451
1452 (% _msthash="506118" _msttexthash="1309490" %)
1453 AT+BAT:  Get the current battery voltage in mV
1454
1455 (% _msthash="506119" _msttexthash="813891" %)
1456 AT+CFG:  Print all configurations
1457
1458 (% _msthash="506120" _msttexthash="551707" %)
1459 AT+WMOD:  Get or Set Work Mode
1460
1461 (% _msthash="506121" _msttexthash="2631499" %)
1462 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1463
1464 (% _msthash="506122" _msttexthash="3907150" %)
1465 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1466
1467 (% _msthash="506123" _msttexthash="854620" %)
1468 AT+SETCNT:  Set the count at present
1469
1470 (% _msthash="506124" _msttexthash="2554877" %)
1471 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1472
1473 (% _msthash="506125" _msttexthash="771849" %)
1474 AT+RPL:  Get or set response level
1475
1476 (% _msthash="506126" _msttexthash="1484314" %)
1477 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1478
1479 (% _msthash="506127" _msttexthash="741728" %)
1480 AT+LEAPSEC:  Get or Set Leap Second
1481
1482 (% _msthash="506128" _msttexthash="1694017" %)
1483 AT+SYNCMOD:  Get or Set time synchronization method
1484
1485 (% _msthash="506129" _msttexthash="2235948" %)
1486 AT+SYNCTDC:  Get or set time synchronization interval in day
1487
1488 (% _msthash="506130" _msttexthash="425542" %)
1489 AT+PID:  Get or set the PID
1490
1491
1492 == 6.2 Where to use AT commands and Downlink commands ==
1493
1494 (% _msthash="506131" _msttexthash="14585714" %)
1495 AT commands：
1496
1497 [[image:image-20220620153708-1.png||height="603" width="723"]]
1498
1499 (% _msthash="506132" _msttexthash="337922" %)
1500 Downlink commands:
1501
1502
1503 (% _msthash="506133" _msttexthash="33046" %)
1504 **TTN:**
1505
1506 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1507
1508
1509 (% _msthash="506134" _msttexthash="11113791" %)
1510 **Helium：**
1511
1512 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1513
1514
1515 (% _msthash="506135" _msttexthash="4159844" %)
1516 **Chirpstack:The downlink window will not be displayed until the network is accessed**
1517
1518 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1519
1520 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1521
1522
1523 (% _msthash="506136" _msttexthash="39286" %)
1524 **Aws:**
1525
1526 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1527
1528
1529
1530 == 6.3 How to change the uplink interval？ ==
1531
1532 [[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"]]
1533
1534
1535
1536 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1537
1538 [[image:image-20220615153355-1.png]]
1539
1540 [[image:1655802313617-381.png]]
1541
1542
1543 (((
1544 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.
1545 )))
1546
1547
1548 Input password and ATZ to activate LHT65N,As shown below:
1549
1550 [[image:image-20220615154519-3.png||height="672" width="807"]]
1551
1552
1553
1554 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1555
1556
1557 [[image:image-20220615153355-1.png]]
1558
1559
1560 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1561
1562 [[image:image-20220615170542-5.png]]
1563
1564
1565 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1566
1567 (% _msthash="506146" _msttexthash="52173160" %)
1568 First connect the four lines；(% style="display:none" %)
1569
1570 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1571
1572
1573 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1574
1575 [[image:image-20220621170938-2.png]]
1576
1577
1578 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1579
1580 [[image:image-20220615171334-6.png]]
1581
1582
1583 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1584
1585
1586 When this interface appears, it indicates that the download has been completed.
1587
1588 [[image:image-20220620160723-8.png]]
1589
1590
1591 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1592
1593
1594
1595 = 7. Order Info =
1596
1597
1598 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
1599
1600 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1601
1602 (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1603
1604 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1605
1606 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1607
1608 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1609
1610 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1611
1612 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1613
1614 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1615
1616 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1617
1618 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1619
1620 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1621
1622
1623
1624
1625 = 8. Packing Info =
1626
1627
1628 **Package Includes**:
1629
1630 * LHT65N Temperature & Humidity Sensor x 1
1631
1632 *Optional external sensor
1633
1634
1635 **Dimension and weight**:
1636
1637 * Device Size:  10 x 10 x 3.5 cm
1638
1639 * Device Weight: 120.5g
1640
1641
1642
1643 = 9. Reference material =
1644
1645 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1646
1647
1648 = 10. FCC Warning =
1649
1650 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1651
1652 (1) This device may not cause harmful interference；
1653
1654 (2) this device must accept any interference received, including interference that may cause undesired operation.