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Version 170.24 by Xiaoling on 2022/06/22 11:15
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9 (% _msthash="315238" _msttexthash="18964465" _mstvisible="3" %)**Table of Contents：**
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11 {{toc/}}
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15
16
17 = 1. Introduction =
18
19 == 1.1 What is LHT65N Temperature & Humidity Sensor ==
20
21
22 (((
23 The Dragino LHT65N Temperature & Humidity sensor is a Long Range LoRaWAN Sensor. It includes a (% style="color:#4f81bd" %)**built-in Temperature & Humidity sensor**(%%) and has an external sensor connector to connect to an external (% style="color:#4f81bd" %)**Temperature Sensor.**
24 )))
25
26 (((
27 The LHT65N allows users to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, building automation, and so on.
28 )))
29
30 (((
31 LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
32 )))
33
34 (((
35 LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
36 )))
37
38 (((
39 LHT65N supports (% style="color:#4f81bd" %)**Datalog Feature**(%%). It will record the data when there is no network coverage and users can retrieve the sensor value later to ensure no miss for every sensor reading.
40 )))
41
42 (((
43 *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
44 )))
45
46
47 == 1.2 Features ==
48
49 * Wall mountable
50 * LoRaWAN v1.0.3 Class A protocol
51 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
52 * AT Commands to change parameters
53 * Remote configure parameters via LoRaWAN Downlink
54 * Firmware upgradeable via program port
55 * Built-in 2400mAh battery for up to 10 years of use.
56 * Built-in Temperature & Humidity sensor
57 * Optional External Sensors
58 * Tri-color LED to indicate working status
59 * Datalog feature
60
61 == 1.3 Specification ==
62
63
64 **Built-in Temperature Sensor:**
65
66 * Resolution: 0.01 °C
67 * Accuracy Tolerance : Typ ±0.3 °C
68 * Long Term Drift: < 0.02 °C/yr
69 * Operating Range: -40 ~~ 85 °C
70
71 **Built-in Humidity Sensor:**
72
73 * Resolution: 0.04 %RH
74 * Accuracy Tolerance : Typ ±3 %RH
75 * Long Term Drift: < 0.02 °C/yr
76 * Operating Range: 0 ~~ 96 %RH
77
78 **External Temperature Sensor:**
79
80 * Resolution: 0.0625 °C
81 * ±0.5°C accuracy from -10°C to +85°C
82 * ±2°C accuracy from -55°C to +125°C
83 * Operating Range: -55 °C ~~ 125 °C
84
85 = 2. Connect LHT65N to IoT Server =
86
87 == 2.1 How does LHT65N work? ==
88
89 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.
90
91 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.
92
93
94 == 2.2 How to Activate LHT65N? ==
95
96 The LHT65N has two working modes:
97
98 * (% 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.
99 * (% 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. 
100
101 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
102
103
104 [[image:image-20220515123819-1.png||_mstalt="430742" _mstvisible="3" height="379" width="317"]]
105
106 [[image:image-20220525110604-2.png||_mstalt="427531" _mstvisible="3"]]
107
108
109
110 == 2.3 Example to join LoRaWAN network ==
111
112 (% _msthash="315240" _msttexthash="9205482" _mstvisible="1" class="wikigeneratedid" %)
113 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.
114
115 (% _mstvisible="1" class="wikigeneratedid" %)
116 [[image:image-20220522232442-1.png||_mstalt="427830" _mstvisible="3" height="387" width="648"]]
117
118
119 (((
120 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:
121 )))
122
123
124
125 === 2.3.1 Step 1: Create Device n TTN ===
126
127 (((
128 Create a device in TTN V3 with the OTAA keys from LHT65N.
129 )))
130
131 (((
132 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
133 )))
134
135 [[image:image-20220617150003-1.jpeg]]
136
137 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
138
139 Add APP EUI in the application.
140
141
142 [[image:image-20220522232916-3.png||_mstalt="430495" _mstvisible="3"]]
143
144
145 [[image:image-20220522232932-4.png||_mstalt="430157" _mstvisible="3"]]
146
147
148 [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
149
150
151 Note: LHT65N use same payload as LHT65.
152
153
154 [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
155
156
157 Input APP EUI,  APP KEY and DEV EUI:
158
159
160 [[image:image-20220522233118-7.png||_mstalt="430430" _mstvisible="3"]]
161
162
163
164
165 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
166
167 (((
168 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.
169 )))
170
171 [[image:image-20220522233300-8.png||_mstalt="428389" _mstvisible="3" height="219" width="722"]]
172
173
174
175
176 == 2.4 Uplink Payload ==
177
178 (((
179 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.
180 )))
181
182 (((
183 After each uplink, the (% _mstvisible="3" style="color:blue" %)**BLUE LED**(%%) will blink once.
184 )))
185
186 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:426px" %)
187 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 97px;" %)(% _mstvisible="5" %)
188 (((
189 (% _mstvisible="6" %)
190 (% _msthash="1817478" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
191 )))|=(% _mstvisible="4" style="width: 39px;" %)(% _mstvisible="5" %)
192 (((
193 (% _mstvisible="6" %)
194 (% _msthash="1817479" _msttexthash="4550" _mstvisible="8" %)**2**
195 )))|=(% _mstvisible="4" style="width: 100px;" %)(% _mstvisible="5" %)
196 (((
197 (% _mstvisible="6" %)
198 (% _msthash="1817480" _msttexthash="4550" _mstvisible="8" %)**2**
199 )))|=(% _mstvisible="4" style="width: 77px;" %)(% _mstvisible="5" %)
200 (((
201 (% _mstvisible="6" %)
202 (% _msthash="1817481" _msttexthash="4550" _mstvisible="8" %)**2**
203 )))|=(% _mstvisible="4" style="width: 47px;" %)(% _mstvisible="5" %)
204 (((
205 (% _mstvisible="6" %)
206 (% _msthash="1817482" _msttexthash="4459" _mstvisible="8" %)**1**
207 )))|=(% _mstvisible="4" style="width: 51px;" %)(% _mstvisible="5" %)
208 (((
209 (% _mstvisible="6" %)
210 (% _msthash="1817483" _msttexthash="4732" _mstvisible="8" %)**4**
211 )))
212 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:97px" %)(% _mstvisible="5" %)
213 (((
214 (% _mstvisible="6" %)
215 (% _msthash="1817484" _msttexthash="60203" _mstvisible="8" %)**Value**
216 )))|(% _mstvisible="4" style="width:39px" %)(% _mstvisible="5" %)
217 (((
218 (% _mstvisible="6" %)
219 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo" _msthash="1817485" _msttexthash="22594" _mstvisible="7"]]
220 )))|(% _mstvisible="4" style="width:100px" %)(% _mstvisible="5" %)
221 (((
222 (% _mstvisible="6" %)
223 (((
224 (% _mstvisible="7" %)
225 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224742" _msttexthash="405769" _mstvisible="8"]]
226 )))
227 )))|(% _mstvisible="4" style="width:77px" %)(% _mstvisible="5" %)
228 (((
229 (% _mstvisible="6" %)
230 (((
231 (% _mstvisible="7" %)
232 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2224743" _msttexthash="105872" _mstvisible="8"]]
233 )))
234
235 (% _mstvisible="6" %)
236 (((
237 (% _mstvisible="7" %)
238 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224744" _msttexthash="117429" _mstvisible="8"]]
239 )))
240 )))|(% _mstvisible="4" style="width:47px" %)(% _mstvisible="5" %)
241 (((
242 (% _mstvisible="6" %)
243 [[Ext>>||anchor="H2.4.5Ext23" _msthash="1817486" _msttexthash="32331" _mstvisible="7"]] #
244 )))|(% _mstvisible="4" style="width:51px" %)(% _mstvisible="5" %)
245 (((
246 (% _mstvisible="6" %)
247 [[Ext value>>||anchor="H2.4.6Extvalue" _msthash="1817487" _msttexthash="116545" _mstvisible="7"]]
248 )))
249
250 * The First 6 bytes: has fix meanings for every LHT65N.
251 * The 7th byte (EXT #): defines the external sensor model.
252 * 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.)
253
254
255
256 === 2.4.1 Decoder in TTN V3 ===
257
258 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.
259
260 Below is the position to put the decoder and LHT65N decoder can be download from here:
261
262
263 [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0 >>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0||_msthash="315253" _msttexthash="3509064" _mstvisible="2"]]
264
265
266 [[image:image-20220522234118-10.png||_mstalt="451464" _mstvisible="3" height="353" width="729"]]
267
268
269
270
271 === 2.4.2 BAT-Battery Info ===
272
273 These two bytes of BAT include the battery state and the actually voltage
274
275 [[image:image-20220523152839-18.png||_mstalt="457613" _mstvisible="3"]]
276
277
278 [[image:image-20220522235639-1.png||_mstalt="431392" _mstvisible="3" height="139" width="727"]]
279
280
281 Check the battery voltage for LHT65N.
282
283 * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
284 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
285
286
287 === 2.4.3 Built-in Temperature ===
288
289 [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
290
291 * Temperature:  0x0ABB/100=27.47℃
292
293 [[image:image-20220522235639-3.png||_mstalt="432120" _mstvisible="3"]]
294
295 * Temperature:  (0xF5C6-65536)/100=-26.18℃
296
297 === 2.4.4 Built-in Humidity ===
298
299 [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
300
301 * Humidity:    0x025C/10=60.4%
302
303 === 2.4.5 Ext # ===
304
305 Bytes for External Sensor:
306
307 [[image:image-20220523152822-17.png||_mstalt="454545" _mstvisible="3"]]
308
309
310
311 === 2.4.6 Ext value ===
312
313 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
314
315
316 [[image:image-20220522235639-5.png||_mstalt="432848" _mstvisible="3"]]
317
318
319 * DS18B20 temp=0x0ADD/100=27.81℃
320
321 The last 2 bytes of data are meaningless
322
323 [[image:image-20220522235639-6.png||_mstalt="433212" _mstvisible="3"]]
324
325
326 * External temperature= (0xF54F-65536)/100=-27.37℃
327
328 The last 2 bytes of data are meaningless
329
330 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
331
332
333
334 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
335
336 (((
337 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:
338 )))
339
340 (((
341
342 )))
343
344 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
345 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 96px;" %)(% _mstvisible="5" %)
346 (((
347 (% _mstvisible="6" %)
348 (% _msthash="1817488" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
349 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
350 (((
351 (% _mstvisible="6" %)
352 (% _msthash="1817489" _msttexthash="4550" _mstvisible="8" %)**2**
353 )))|=(% _mstvisible="4" style="width: 99px;" %)(% _mstvisible="5" %)
354 (((
355 (% _mstvisible="6" %)
356 (% _msthash="1817490" _msttexthash="4550" _mstvisible="8" %)**2**
357 )))|=(% _mstvisible="4" style="width: 132px;" %)(% _mstvisible="5" %)
358 (((
359 (% _mstvisible="6" %)
360 (% _msthash="1817491" _msttexthash="4550" _mstvisible="8" %)**2**
361 )))|=(% _mstvisible="4" style="width: 54px;" %)(% _mstvisible="5" %)
362 (((
363 (% _mstvisible="6" %)
364 (% _msthash="1817492" _msttexthash="4459" _mstvisible="8" %)**1**
365 )))|=(% _mstvisible="4" style="width: 64px;" %)(% _mstvisible="5" %)
366 (((
367 (% _mstvisible="6" %)
368 (% _msthash="1817493" _msttexthash="4732" _mstvisible="8" %)**4**
369 )))
370 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:96px" %)(% _mstvisible="5" %)
371 (((
372 (% _mstvisible="6" %)
373 (% _msthash="1817494" _msttexthash="60203" _mstvisible="8" %)**Value**
374 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
375 (((
376 (% _mstvisible="6" %)
377 [[External temperature>>||anchor="H4.2SetExternalSensorMode" _msthash="1817495" _msttexthash="426517" _mstvisible="7"]]
378 )))|(% _mstvisible="4" style="width:99px" %)(% _mstvisible="5" %)
379 (((
380 (% _mstvisible="6" %)
381 (((
382 (% _mstvisible="7" %)
383 [[Built-In>>||anchor="H2.4.3Built-inTemperature" _msthash="2224745" _msttexthash="100464" _mstvisible="8"]]
384 )))
385
386 (% _mstvisible="6" %)
387 (((
388 (% _mstvisible="7" %)
389 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224746" _msttexthash="184041" _mstvisible="8"]]
390 )))
391 )))|(% _mstvisible="4" style="width:132px" %)(% _mstvisible="5" %)
392 (((
393 (% _mstvisible="6" %)
394 (((
395 (% _msthash="2224747" _msttexthash="136331" _mstvisible="7" %)
396 BAT Status &
397 )))
398
399 (% _mstvisible="6" %)
400 (((
401 (% _mstvisible="7" %)
402 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224748" _msttexthash="311181" _mstvisible="8"]]
403 )))
404 )))|(% _mstvisible="4" style="width:54px" %)(% _mstvisible="5" %)
405 (((
406 (% _msthash="1817496" _msttexthash="147225" _mstvisible="6" %)
407 Status & Ext
408 )))|(% _mstvisible="4" style="width:64px" %)(% _mstvisible="5" %)
409 (((
410 (% _mstvisible="6" %)
411 (((
412 (% _mstvisible="7" %)
413 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2224749" _msttexthash="227175" _mstvisible="8"]]
414 )))
415 )))
416
417 (% _mstvisible="1" %)
418 * (% _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**
419
420 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:469px" %)
421 (% _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]
422 (% _mstvisible="3" %)|(% _msthash="1230921" _msttexthash="60203" _mstvisible="4" style="width:65px" %)Value|(% _mstvisible="4" style="width:267px" %)(% _mstvisible="5" %)
423 (((
424 (% _msthash="1817497" _msttexthash="128427" _mstvisible="6" %)
425 BAT Status
426
427 (% _msthash="1817498" _msttexthash="472784" _mstvisible="6" %)
428 00(b): Ultra Low ( BAT <= 2.50v)
429
430 (% _msthash="1817499" _msttexthash="483678" _mstvisible="6" %)
431 01(b): Low  (2.50v <=BAT <= 2.55v)
432
433 (% _msthash="1817500" _msttexthash="440791" _mstvisible="6" %)
434 10(b): OK   (2.55v <= BAT <=2.65v)
435
436 (% _msthash="1817501" _msttexthash="334191" _mstvisible="6" %)
437 11(b): Good   (BAT >= 2.65v)
438 )))|(% _mstvisible="4" style="width:134px" %)(% _mstvisible="5" %)
439 (((
440 (% _mstvisible="6" %)
441 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="1817502" _msttexthash="311181" _mstvisible="7"]]
442
443 (% _mstvisible="6" %)
444
445 )))
446
447 * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
448
449 [[image:image-20220523152434-16.png||_mstalt="453921" _mstvisible="3"]]
450
451 * Poll Message Flag:  1: This message is a poll message reply, 0: means this is a normal uplink.
452 * 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.
453 * 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)
454
455
456 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
457
458 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
459
460 be used to power the external ADC sensor; user can control the power on time for this
461
462 sensor by setting:
463
464 AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)Time to power this sensor, from 0 ~~ 65535ms
465
466
467
468 == 2.5 Show data on Datacake ==
469
470 (((
471 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:
472 )))
473
474 (((
475
476 )))
477
478 (((
479 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
480 )))
481
482 (((
483 (% 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.
484 )))
485
486 (((
487
488 )))
489
490 (((
491 Add Datacake:
492 )))
493
494
495 [[image:image-20220523000825-7.png||_mstalt="429884" _mstvisible="3" height="262" width="583"]]
496
497
498
499 Select default key as Access Key:
500
501
502 [[image:image-20220523000825-8.png||_mstalt="430248" _mstvisible="3" height="453" width="406"]]
503
504
505 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/||_mstvisible="2"]]) , add LHT65 device.
506
507
508 [[image:image-20220523000825-9.png||_mstalt="430612" _mstvisible="3" height="366" width="392"]]
509
510
511 [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
512
513
514
515 == 2.6 Datalog Feature ==
516
517 (((
518 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.
519 )))
520
521
522
523 === 2.6.1 Ways to get datalog via LoRaWAN ===
524
525 There are two methods:
526
527 1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specify time range.
528 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.
529
530
531
532 === 2.6.2 Unix TimeStamp ===
533
534
535 LHT65N uses Unix TimeStamp format based on
536
537
538 [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
539
540
541
542 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
543
544 Below is the converter example
545
546 [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
547
548 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
549
550
551
552 === 2.6.3 Set Device Time ===
553
554 There are two ways to set device's time:
555
556 **~1. Through LoRaWAN MAC Command (Default settings)**
557
558 User need to set SYNCMOD=1 to enable sync time via MAC command.
559
560 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).
561
562 (% 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.
563
564
565 **2. Manually Set Time**
566
567 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
568
569
570
571 === 2.6.4 Poll sensor value ===
572
573 User can poll sensor value based on timestamps from the server. Below is the downlink command.
574
575 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
576
577
578 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.
579
580 For example, downlink command **31 5FC5F350 5FC6 0160 05**
581
582 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
583
584 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
585
586
587
588 === 2.6.5 Datalog Uplink payload ===
589
590 (% _msthash="315267" _msttexthash="2245087" _mstvisible="1" %)
591 The Datalog poll reply uplink will use below payload format.
592
593 (% _mstvisible="1" %)
594 (((
595 (% _mstvisible="2" %)
596 (% _msthash="506080" _msttexthash="451581" _mstvisible="4" %)**Retrieval data payload**
597 )))
598
599 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
600 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 93px;" %)(% _mstvisible="5" %)
601 (((
602 (% _mstvisible="6" %)
603 (((
604 (% _mstvisible="7" %)
605 (% _msthash="2224750" _msttexthash="161122" _mstvisible="9" %)**Size(bytes)**
606 )))
607 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
608 (((
609 (% _mstvisible="6" %)
610 (((
611 (% _mstvisible="7" %)
612 (% _msthash="2224751" _msttexthash="4550" _mstvisible="9" %)**2**
613 )))
614 )))|=(% _mstvisible="4" style="width: 102px;" %)(% _mstvisible="5" %)
615 (((
616 (% _mstvisible="6" %)
617 (((
618 (% _mstvisible="7" %)
619 (% _msthash="2224752" _msttexthash="4550" _mstvisible="9" %)**2**
620 )))
621 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
622 (((
623 (% _mstvisible="6" %)
624 (((
625 (% _mstvisible="7" %)
626 (% _msthash="2224753" _msttexthash="4550" _mstvisible="9" %)**2**
627 )))
628 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
629 (((
630 (% _mstvisible="6" %)
631 (((
632 (% _mstvisible="7" %)
633 (% _msthash="2224754" _msttexthash="4459" _mstvisible="9" %)**1**
634 )))
635 )))|=(% _mstvisible="4" style="width: 48px;" %)(% _mstvisible="5" %)
636 (((
637 (% _mstvisible="6" %)
638 (((
639 (% _mstvisible="7" %)
640 (% _msthash="2224755" _msttexthash="4732" _mstvisible="9" %)**4**
641 )))
642 )))
643 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:93px" %)(% _mstvisible="5" %)
644 (((
645 (% _mstvisible="6" %)
646 (((
647 (% _mstvisible="7" %)
648 (% _msthash="2224756" _msttexthash="60203" _mstvisible="9" %)**Value**
649 )))
650 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
651 (((
652 (% _mstvisible="6" %)
653 (((
654 (% _mstvisible="7" %)
655 [[External sensor data>>||anchor="H2.4.6Extvalue" _msthash="2224757" _msttexthash="386672" _mstvisible="8"]]
656 )))
657 )))|(% _mstvisible="4" style="width:102px" %)(% _mstvisible="5" %)
658 (((
659 (% _mstvisible="6" %)
660 (((
661 (% _mstvisible="7" %)
662 (((
663 (% _mstvisible="8" %)
664 [[Built In>>||anchor="H2.4.3Built-inTemperature" _msthash="2671864" _msttexthash="91065" _mstvisible="9"]]
665 )))
666 )))
667
668 (% _mstvisible="6" %)
669 (((
670 (% _mstvisible="7" %)
671 (((
672 (% _mstvisible="8" %)
673 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2671865" _msttexthash="184041" _mstvisible="9"]]
674 )))
675 )))
676 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
677 (((
678 (% _mstvisible="6" %)
679 (((
680 (% _mstvisible="7" %)
681 (((
682 (% _mstvisible="8" %)
683 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2671866" _msttexthash="105872" _mstvisible="9"]]
684 )))
685 )))
686
687 (% _mstvisible="6" %)
688 (((
689 (% _mstvisible="7" %)
690 (((
691 (% _mstvisible="8" %)
692 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2671867" _msttexthash="117429" _mstvisible="9"]]
693 )))
694 )))
695 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
696 (((
697 (% _mstvisible="6" %)
698 (((
699 (% _msthash="2224758" _msttexthash="390390" _mstvisible="7" %)
700 Poll message flag & Ext
701 )))
702 )))|(% _mstvisible="4" style="width:48px" %)(% _mstvisible="5" %)
703 (((
704 (% _mstvisible="6" %)
705 (((
706 (% _mstvisible="7" %)
707 (((
708 (% _mstvisible="8" %)
709 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2671868" _msttexthash="227175" _mstvisible="9"]]
710 )))
711 )))
712
713 (% _mstvisible="6" %)
714 (((
715 (% _mstvisible="7" %)
716 (((
717 (% _mstvisible="8" %)
718
719 )))
720 )))
721 )))
722
723 (% _mstvisible="1" %)
724 (% _msthash="315268" _msttexthash="390390" _mstvisible="3" %)**Poll message flag & Ext**
725
726 (% _mstvisible="1" %)
727 [[image:image-20220523152208-14.png||_mstalt="452920" _mstvisible="3"]]
728
729 (% _mstvisible="1" %)
730 (((
731 (% _mstvisible="2" %)
732 (((
733 (% _msthash="736723" _msttexthash="2005003" _mstvisible="3" %)
734 Poll Message Flag: 1: This message is a poll message reply.
735 )))
736 )))
737
738 (% _mstvisible="1" %)
739 * (% _mstvisible="3" %)
740 (((
741 (% _mstvisible="4" %)
742 (((
743 (% _msthash="1197157" _msttexthash="561548" _mstvisible="5" %)
744 Poll Message Flag is set to 1.
745 )))
746 )))
747 * (% _mstvisible="3" %)
748 (((
749 (% _mstvisible="4" %)
750 (((
751 (% _msthash="1197158" _msttexthash="9284964" _mstvisible="5" %)
752 Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
753 )))
754 )))
755
756 (% _mstvisible="1" %)
757 (((
758 (% _mstvisible="2" %)
759 (((
760 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
761
762
763 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
764 For example, in US915 band, the max payload for different DR is:
765 )))
766 )))
767
768 (% _mstvisible="1" %)
769 (((
770 (% _mstvisible="2" %)
771 (((
772 (% _msthash="736725" _msttexthash="1065532" _mstvisible="3" %)
773 a) DR0: max is 11 bytes so one entry of data
774 )))
775 )))
776
777 (% _mstvisible="1" %)
778 (((
779 (% _mstvisible="2" %)
780 (((
781 (% _msthash="736726" _msttexthash="3265665" _mstvisible="3" %)
782 b) DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
783 )))
784 )))
785
786 (% _mstvisible="1" %)
787 (((
788 (% _mstvisible="2" %)
789 (((
790 (% _msthash="736727" _msttexthash="1454115" _mstvisible="3" style="text-align: left;" %)
791 c) DR2: total payload includes 11 entries of data
792 )))
793 )))
794
795 (% _mstvisible="1" %)
796 (((
797 (% _mstvisible="2" %)
798 (((
799 (% _msthash="736728" _msttexthash="1483924" _mstvisible="3" style="text-align: left;" %)
800 d) DR3: total payload includes 22 entries of data.
801 )))
802 )))
803
804 (% _mstvisible="1" %)
805 (((
806 (% _mstvisible="2" %)
807 (((
808 (% _msthash="736729" _msttexthash="5848349" _mstvisible="3" style="text-align: left;" %)
809 If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0   
810 )))
811 )))
812
813
814 (% _mstvisible="1" style="text-align: left;" %)
815 (% _msthash="315269" _msttexthash="104767" _mstvisible="3" %)**Example:**
816
817 (% _msthash="315270" _msttexthash="913822" _mstvisible="1" style="text-align: left;" %)
818 If LHT65N has below data inside Flash:
819
820 (% _mstvisible="1" %)
821 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
822
823 (% _mstvisible="1" %)
824 (((
825 (% _msthash="506081" _msttexthash="1663961" _mstvisible="2" style="text-align: left;" %)
826 If user sends below downlink command: (% _mstvisible="3" style="background-color:yellow" %)3160065F9760066DA705
827 )))
828
829 (% _mstvisible="1" %)
830 (((
831 (% _msthash="506082" _msttexthash="1092494" _mstvisible="2" style="text-align: left;" %)
832 Where : Start time: 60065F97 = time 21/1/19 04:27:03
833 )))
834
835 (% _mstvisible="1" %)
836 (((
837 (% _msthash="506083" _msttexthash="737269" _mstvisible="2" style="text-align: left;" %)
838 Stop time 60066DA7= time 21/1/19 05:27:(% _msthash="903005" _msttexthash="9672" _mstvisible="2" %)03
839 )))
840
841 (% _mstvisible="1" %)
842 (((
843 (% _mstvisible="2" %)
844
845 )))
846
847 (% _mstvisible="1" %)
848 (((
849 (% _msthash="506084" _msttexthash="751218" _mstvisible="2" style="text-align: left;" %)
850 LHT65N will uplink this payload.
851 )))
852
853 (% _mstvisible="1" %)
854 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
855
856 (% _msthash="315271" _msttexthash="12012546" _mstvisible="1" style="text-align: left;" %)
857 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
858
859 (% _msthash="315237" _msttexthash="1385839" %)
860 Where the first 11 bytes is for the first entry:
861
862 (% _msthash="315238" _msttexthash="274846" %)
863 7FFF089801464160065F97
864
865 (% _msthash="315239" _msttexthash="617435" %)
866 Ext sensor data=0x7FFF/100=327.67
867
868 (% _msthash="315240" _msttexthash="270543" %)
869 Temp=0x0898/100=22.00
870
871 (% _msthash="315241" _msttexthash="211783" %)
872 Hum=0x0146/10=32.6
873
874 (% _msthash="315242" _msttexthash="1569776" %)
875 poll message flag & Ext=0x41,means reply data,Ext=1
876
877 (% _msthash="315243" _msttexthash="1120509" %)
878 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
879
880
881
882 == 2.7 Alarm Mode ==
883
884 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.
885
886 (% style="color:red" %)Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.
887
888 **AT COMMAND FOR ALARM MODE:**
889
890 (% _mstvisible="1" class="box infomessage" %)
891 (((
892 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled)
893
894 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
895
896 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
897
898 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
899
900 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
901 )))
902
903
904
905
906 == 2.8 LED Indicator ==
907
908 The LHT65 has a triple color LED which for easy showing different stage .
909
910 While user press ACT button, the LED will work as per LED status with ACT button.
911
912 In a normal working state:
913
914 * For each uplink, the BLUE LED or RED LED will blink once.
915 BLUE LED when external sensor is connected.
916 * RED LED when external sensor is not connected
917 * For each success downlink, the PURPLE LED will blink once
918
919
920
921 == 2.9 installation ==
922
923 (% _mstvisible="1" %)
924 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
925
926
927
928 = 3. Sensors and Accessories =
929
930 == 3.1 E2 Extension Cable ==
931
932 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
933
934 1m long breakout cable for LHT65N
935
936 [[image:image-20220619092421-3.png||height="371" width="529"]]
937
938
939
940
941 == 3.2 E3 Temperature Probe ==
942
943
944 [[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"]]
945
946
947 Temperature sensor with 2 meters cable long
948
949 * Resolution: 0.0625 °C
950 * ±0.5°C accuracy from -10°C to +85°C
951 * ±2°C accuracy from -55°C to +125°C
952 * Operating Range: -40 ~~ 125 °C
953 * Working voltage 2.35v ~~ 5v
954
955
956
957 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
958
959 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
960
961 * AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
962
963 * LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
964
965 There are two kinds of commands to configure LHT65N, they are:
966
967 * (% style="color:#4f81bd" %)**General Commands**.
968
969 These commands are to configure:
970
971 1. General system settings like: uplink interval.
972 1. LoRaWAN protocol & radio-related commands.
973
974 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]]
975
976 * (% style="color:#4f81bd" %)**Commands special design for LHT65N**
977
978 These commands are only valid for LHT65N, as below:
979
980
981 == 4.1 Set Transmit Interval Time ==
982
983 Feature: Change LoRaWAN End Node Transmit Interval.
984
985 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
986
987 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
988
989
990 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
991
992 Format: Command Code (0x01) followed by 3 bytes time value.
993
994 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
995
996 * **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
997
998 * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
999
1000 == 4.2 Set External Sensor Mode ==
1001
1002 Feature: Change External Sensor Mode.
1003
1004 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1005
1006 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1007
1008
1009 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1010
1011 Total bytes: 2 ~~ 5 bytes
1012
1013 **Example:**
1014
1015 * 0xA201: Set external sensor type to E1
1016
1017 * 0xA209: Same as AT+EXT=9
1018
1019 * 0xA20702003c: Same as AT+SETCNT=60
1020
1021
1022 == 4.3 Enable/Disable uplink Temperature probe ID ==
1023
1024 (((
1025 Feature: If PID is enabled, device will send the temperature probe ID on:
1026 )))
1027
1028 * (((
1029 First Packet after OTAA Join
1030 )))
1031 * (((
1032 Every 24 hours since the first packet.
1033 )))
1034
1035 (((
1036 PID is default set to disable (0)
1037 )))
1038
1039 (% style="color:#4f81bd" %)**AT Command:**
1040
1041 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1042
1043
1044 (% style="color:#4f81bd" %)**Downlink Command:**
1045
1046 * **0xA800**  **~-~->** AT+PID=0
1047 * **0xA801**     **~-~->** AT+PID=1
1048
1049
1050 == 4.4 Set Password ==
1051
1052 Feature: Set device password, max 9 digits
1053
1054 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1055
1056 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1057
1058
1059 (% style="color:#4f81bd" %)**Downlink Command:**
1060
1061 No downlink command for this feature.
1062
1063
1064
1065 == 4.5 Quit AT Command ==
1066
1067 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1068
1069 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1070
1071 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1072
1073
1074 (% style="color:#4f81bd" %)**Downlink Command:**
1075
1076 No downlink command for this feature.
1077
1078
1079
1080 == 4.6 Set to sleep mode ==
1081
1082 Feature: Set device to sleep mode
1083
1084 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1085 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1086
1087 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1088
1089 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1090
1091
1092 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1093
1094 * There is no downlink command to set to Sleep mode.
1095
1096
1097
1098 == 4.7 Set system time ==
1099
1100 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1101
1102 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1103
1104 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1105
1106
1107 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1108
1109 0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1110
1111
1112
1113 == 4.8 Set Time Sync Mode ==
1114
1115 (((
1116 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1117 )))
1118
1119 (((
1120 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.
1121 )))
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 (% style="color:#4f81bd" %)**Downlink Command:**
1129
1130 0x28 01 ~/~/ Same As AT+SYNCMOD=1
1131 0x28 00 ~/~/ Same As AT+SYNCMOD=0
1132
1133
1134
1135 == 4.9 Set Time Sync Interval ==
1136
1137 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1138
1139 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1140
1141 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1142
1143
1144 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1145
1146 **0x29 0A** ~/~/ Same as AT+SYNCTDC=0x0A
1147
1148
1149
1150 == 4.10 Print data entries base on page. ==
1151
1152 Feature: Print the sector data from start page to stop page (max is 416 pages).
1153
1154 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1155
1156 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1157
1158
1159 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1160
1161 No downlink commands for feature
1162
1163
1164
1165 == 4.11 Print last few data entries. ==
1166
1167 Feature: Print the last few data entries
1168
1169 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1170
1171 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1172
1173
1174 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1175
1176 No downlink commands for feature
1177
1178
1179
1180 == 4.12 Clear Flash Record ==
1181
1182 Feature: Clear flash storage for data log feature.
1183
1184
1185 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1186
1187 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1188
1189
1190 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1191
1192 * Example: 0xA301 ~/~/Same as AT+CLRDTA
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 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1211
1212 * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1213
1214
1215 = 5. Battery & How to replace =
1216
1217 == 5.1 Battery Type ==
1218
1219 (((
1220 (((
1221 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.
1222 )))
1223 )))
1224
1225 (((
1226
1227 )))
1228
1229 (((
1230 (((
1231 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1232 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1233 )))
1234 )))
1235
1236 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1237
1238
1239 == 5.2 Replace Battery ==
1240
1241 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.
1242
1243 [[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"]]
1244
1245
1246 == 5.3 Battery Life Analyze ==
1247
1248 (((
1249 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:
1250 [[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]]
1251 )))
1252
1253 (((
1254
1255 )))
1256
1257 (((
1258 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]]
1259 )))
1260
1261
1262
1263 = 6. FAQ =
1264
1265 == 6.1 How to use AT Command? ==
1266
1267 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.
1268
1269 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1270
1271
1272 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1273
1274 (% _msthash="506062" _msttexthash="1187732" %)
1275 **✓ (% style="background-color:yellow" %)USB to TTL GND <~-~->GND(%%)**
1276
1277 (% _msthash="506063" _msttexthash="1158313" %)**✓  **(% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1278
1279 (% _msthash="506064" _msttexthash="1175629" %)**✓  **(% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1280
1281 (% _msthash="506065" _msttexthash="1164696" %)**✓  **(% style="background-color:yellow" %)**USB to TTL 3.3V <~-~-> D-**
1282
1283
1284 (((
1285 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.
1286 )))
1287
1288
1289 Input password and ATZ to activate LHT65N,As shown below:
1290
1291 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1292
1293
1294 (% _msthash="506066" _msttexthash="544869" %)
1295 AT Command List is as below:
1296
1297 (% _msthash="506067" _msttexthash="361920" %)
1298 AT+<CMD>? :  Help on <CMD>
1299
1300 (% _msthash="506068" _msttexthash="243061" %)
1301 AT+<CMD> :  Run <CMD>
1302
1303 (% _msthash="506069" _msttexthash="704197" %)
1304 AT+<CMD>=<value> :  Set the value
1305
1306 (% _msthash="506070" _msttexthash="455676" %)
1307 AT+<CMD>=? :  Get the value
1308
1309 (% _msthash="506071" _msttexthash="670553" %)
1310 AT+DEBUG:  Set more info output
1311
1312 (% _msthash="506072" _msttexthash="485888" %)
1313 ATZ:  Trig a reset of the MCU
1314
1315 (% _msthash="506073" _msttexthash="2068872" %)
1316 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1317
1318 (% _msthash="506074" _msttexthash="689169" %)
1319 AT+DEUI:  Get or Set the Device EUI
1320
1321 (% _msthash="506075" _msttexthash="960414" %)
1322 AT+DADDR:  Get or Set the Device Address
1323
1324 (% _msthash="506076" _msttexthash="1079897" %)
1325 AT+APPKEY:  Get or Set the Application Key
1326
1327 (% _msthash="506077" _msttexthash="1326143" %)
1328 AT+NWKSKEY:  Get or Set the Network Session Key
1329
1330 (% _msthash="506078" _msttexthash="1573000" %)
1331 AT+APPSKEY:  Get or Set the Application Session Key
1332
1333 (% _msthash="506079" _msttexthash="1041729" %)
1334 AT+APPEUI:  Get or Set the Application EUI
1335
1336 (% _msthash="506080" _msttexthash="2104206" %)
1337 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1338
1339 (% _msthash="506081" _msttexthash="3369288" %)
1340 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1341
1342 (% _msthash="506082" _msttexthash="1894529" %)
1343 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1344
1345 (% _msthash="506083" _msttexthash="3864172" %)
1346 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1347
1348 (% _msthash="506084" _msttexthash="1712204" %)
1349 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1350
1351 (% _msthash="506085" _msttexthash="1281202" %)
1352 AT+RX2FQ:  Get or Set the Rx2 window frequency
1353
1354 (% _msthash="506086" _msttexthash="2796781" %)
1355 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1356
1357 (% _msthash="506087" _msttexthash="3285165" %)
1358 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1359
1360 (% _msthash="506088" _msttexthash="3286179" %)
1361 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1362
1363 (% _msthash="506089" _msttexthash="4703803" %)
1364 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1365
1366 (% _msthash="506090" _msttexthash="4704999" %)
1367 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1368
1369 (% _msthash="506091" _msttexthash="1528683" %)
1370 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1371
1372 (% _msthash="506092" _msttexthash="757185" %)
1373 AT+NWKID:  Get or Set the Network ID
1374
1375 (% _msthash="506093" _msttexthash="1156597" %)
1376 AT+FCU:  Get or Set the Frame Counter Uplink
1377
1378 (% _msthash="506094" _msttexthash="1273987" %)
1379 AT+FCD:  Get or Set the Frame Counter Downlink
1380
1381 (% _msthash="506095" _msttexthash="859222" %)
1382 AT+CLASS:  Get or Set the Device Class
1383
1384 (% _msthash="506096" _msttexthash="384852" %)
1385 AT+JOIN:  Join network
1386
1387 (% _msthash="506097" _msttexthash="548626" %)
1388 AT+NJS:  Get the join status
1389
1390 (% _msthash="506098" _msttexthash="2546206" %)
1391 AT+SENDB:  Send hexadecimal data along with the application port
1392
1393 (% _msthash="506099" _msttexthash="1932307" %)
1394 AT+SEND:  Send text data along with the application port
1395
1396 (% _msthash="506100" _msttexthash="3560557" %)
1397 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1398
1399 (% _msthash="506101" _msttexthash="1429701" %)
1400 AT+RECV:  Print last received data in raw format
1401
1402 (% _msthash="506102" _msttexthash="1735981" %)
1403 AT+VER:  Get current image version and Frequency Band
1404
1405 (% _msthash="506103" _msttexthash="1189474" %)
1406 AT+CFM:  Get or Set the confirmation mode (0-1)
1407
1408 (% _msthash="506104" _msttexthash="1718210" %)
1409 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1410
1411 (% _msthash="506105" _msttexthash="1339403" %)
1412 AT+SNR:  Get the SNR of the last received packet
1413
1414 (% _msthash="506106" _msttexthash="1452009" %)
1415 AT+RSSI:  Get the RSSI of the last received packet
1416
1417 (% _msthash="506107" _msttexthash="2768142" %)
1418 AT+TDC:  Get or set the application data transmission interval in ms
1419
1420 (% _msthash="506108" _msttexthash="1083914" %)
1421 AT+PORT:  Get or set the application port
1422
1423 (% _msthash="506109" _msttexthash="622440" %)
1424 AT+DISAT:  Disable AT commands
1425
1426 (% _msthash="506110" _msttexthash="868361" %)
1427 AT+PWORD: Set password, max 9 digits
1428
1429 (% _msthash="506111" _msttexthash="2210299" %)
1430 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1431
1432 (% _msthash="506112" _msttexthash="2113462" %)
1433 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1434
1435 (% _msthash="506113" _msttexthash="2087423" %)
1436 AT+PDTA:  Print the sector data from start page to stop page
1437
1438 (% _msthash="506114" _msttexthash="1063127" %)
1439 AT+PLDTA:  Print the last few sets of data
1440
1441 (% _msthash="506115" _msttexthash="1999426" %)
1442 AT+CLRDTA:  Clear the storage, record position back to 1st
1443
1444 (% _msthash="506116" _msttexthash="442130" %)
1445 AT+SLEEP:  Set sleep mode
1446
1447 (% _msthash="506117" _msttexthash="1080222" %)
1448 AT+EXT:  Get or Set external sensor model
1449
1450 (% _msthash="506118" _msttexthash="1309490" %)
1451 AT+BAT:  Get the current battery voltage in mV
1452
1453 (% _msthash="506119" _msttexthash="813891" %)
1454 AT+CFG:  Print all configurations
1455
1456 (% _msthash="506120" _msttexthash="551707" %)
1457 AT+WMOD:  Get or Set Work Mode
1458
1459 (% _msthash="506121" _msttexthash="2631499" %)
1460 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1461
1462 (% _msthash="506122" _msttexthash="3907150" %)
1463 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1464
1465 (% _msthash="506123" _msttexthash="854620" %)
1466 AT+SETCNT:  Set the count at present
1467
1468 (% _msthash="506124" _msttexthash="2554877" %)
1469 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1470
1471 (% _msthash="506125" _msttexthash="771849" %)
1472 AT+RPL:  Get or set response level
1473
1474 (% _msthash="506126" _msttexthash="1484314" %)
1475 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1476
1477 (% _msthash="506127" _msttexthash="741728" %)
1478 AT+LEAPSEC:  Get or Set Leap Second
1479
1480 (% _msthash="506128" _msttexthash="1694017" %)
1481 AT+SYNCMOD:  Get or Set time synchronization method
1482
1483 (% _msthash="506129" _msttexthash="2235948" %)
1484 AT+SYNCTDC:  Get or set time synchronization interval in day
1485
1486 (% _msthash="506130" _msttexthash="425542" %)
1487 AT+PID:  Get or set the PID
1488
1489
1490 == 6.2 Where to use AT commands and Downlink commands ==
1491
1492 (% _msthash="506131" _msttexthash="14585714" %)
1493 AT commands：
1494
1495 [[image:image-20220620153708-1.png||height="603" width="723"]]
1496
1497 (% _msthash="506132" _msttexthash="337922" %)
1498 Downlink commands:
1499
1500
1501 (% _msthash="506133" _msttexthash="33046" %)
1502 **TTN:**
1503
1504 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1505
1506
1507 (% _msthash="506134" _msttexthash="11113791" %)
1508 **Helium：**
1509
1510 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1511
1512
1513 (% _msthash="506135" _msttexthash="4159844" %)
1514 **Chirpstack:The downlink window will not be displayed until the network is accessed**
1515
1516 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1517
1518 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1519
1520
1521 (% _msthash="506136" _msttexthash="39286" %)
1522 **Aws:**
1523
1524 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1525
1526
1527
1528 == 6.3 How to change the uplink interval？ ==
1529
1530 [[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"]]
1531
1532
1533
1534 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1535
1536 [[image:image-20220615153355-1.png]]
1537
1538 [[image:1655802313617-381.png]]
1539
1540
1541 (((
1542 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.
1543 )))
1544
1545
1546 Input password and ATZ to activate LHT65N,As shown below:
1547
1548 [[image:image-20220615154519-3.png||height="672" width="807"]]
1549
1550
1551
1552 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1553
1554
1555 [[image:image-20220615153355-1.png]]
1556
1557
1558 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1559
1560 [[image:image-20220615170542-5.png]]
1561
1562
1563 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1564
1565 (% _msthash="506146" _msttexthash="52173160" %)
1566 First connect the four lines；(% style="display:none" %)
1567
1568 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1569
1570
1571 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1572
1573 [[image:image-20220621170938-2.png]]
1574
1575
1576 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1577
1578 [[image:image-20220615171334-6.png]]
1579
1580
1581 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1582
1583
1584 When this interface appears, it indicates that the download has been completed.
1585
1586 [[image:image-20220620160723-8.png]]
1587
1588
1589 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1590
1591
1592
1593 = 7. Order Info =
1594
1595
1596 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
1597
1598 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1599
1600 (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1601
1602 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1603
1604 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1605
1606 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1607
1608 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1609
1610 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1611
1612 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1613
1614 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1615
1616 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1617
1618 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1619
1620
1621
1622 = 8. Packing Info =
1623
1624
1625 **Package Includes**:
1626
1627 * LHT65N Temperature & Humidity Sensor x 1
1628 * Optional external sensor
1629
1630 **Dimension and weight**:
1631
1632 * Device Size:  10 x 10 x 3.5 cm
1633 * Device Weight: 120.5g
1634
1635
1636 = 9. Reference material =
1637
1638 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1639
1640 = 10. FCC Warning =
1641
1642 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1643
1644 (1) This device may not cause harmful interference；
1645
1646 (2) this device must accept any interference received, including interference that may cause undesired operation.