Skip to Content
Version 170.26 by Xiaoling on 2022/06/22 11:16
Show last authors
1 (% style="text-align:center" %)
2 [[image:image-20220613162008-1.png||_mstalt="428142" height="579" width="379"]]
3
4
5
6
7
8 (% _mstvisible="1" %)
9 (% _msthash="315238" _msttexthash="18964465" _mstvisible="3" %)**Table of Contents：**
10
11 {{toc/}}
12
13
14
15
16
17 = 1. Introduction =
18
19 == 1.1 What is LHT65N Temperature & Humidity Sensor ==
20
21
22 (((
23 The Dragino LHT65N Temperature & Humidity sensor is a Long Range LoRaWAN Sensor. It includes a (% style="color:#4f81bd" %)**built-in Temperature & Humidity sensor**(%%) and has an external sensor connector to connect to an external (% style="color:#4f81bd" %)**Temperature Sensor.**
24 )))
25
26 (((
27 The LHT65N allows users to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, building automation, and so on.
28 )))
29
30 (((
31 LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
32 )))
33
34 (((
35 LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
36 )))
37
38 (((
39 LHT65N supports (% style="color:#4f81bd" %)**Datalog Feature**(%%). It will record the data when there is no network coverage and users can retrieve the sensor value later to ensure no miss for every sensor reading.
40 )))
41
42 (((
43 *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
44 )))
45
46
47 == 1.2 Features ==
48
49 * Wall mountable
50 * LoRaWAN v1.0.3 Class A protocol
51 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
52 * AT Commands to change parameters
53 * Remote configure parameters via LoRaWAN Downlink
54 * Firmware upgradeable via program port
55 * Built-in 2400mAh battery for up to 10 years of use.
56 * Built-in Temperature & Humidity sensor
57 * Optional External Sensors
58 * Tri-color LED to indicate working status
59 * Datalog feature
60
61
62
63 == 1.3 Specification ==
64
65
66 **Built-in Temperature Sensor:**
67
68 * Resolution: 0.01 °C
69 * Accuracy Tolerance : Typ ±0.3 °C
70 * Long Term Drift: < 0.02 °C/yr
71 * Operating Range: -40 ~~ 85 °C
72
73 **Built-in Humidity Sensor:**
74
75 * Resolution: 0.04 %RH
76 * Accuracy Tolerance : Typ ±3 %RH
77 * Long Term Drift: < 0.02 °C/yr
78 * Operating Range: 0 ~~ 96 %RH
79
80 **External Temperature Sensor:**
81
82 * Resolution: 0.0625 °C
83 * ±0.5°C accuracy from -10°C to +85°C
84 * ±2°C accuracy from -55°C to +125°C
85 * Operating Range: -55 °C ~~ 125 °C
86
87
88
89
90 = 2. Connect LHT65N to IoT Server =
91
92 == 2.1 How does LHT65N work? ==
93
94 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.
95
96 If LHT65N is under the coverage of this LoRaWAN network. LHT65N can join the LoRaWAN network automatically. After successfully joining, LHT65N will start to measure environment temperature and humidity, and start to transmit sensor data to the LoRaWAN server. The default period for each uplink is 20 minutes.
97
98
99 == 2.2 How to Activate LHT65N? ==
100
101 The LHT65N has two working modes:
102
103 * (% 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.
104 * (% 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. 
105
106 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
107
108
109 [[image:image-20220515123819-1.png||_mstalt="430742" _mstvisible="3" height="379" width="317"]]
110
111 [[image:image-20220525110604-2.png||_mstalt="427531" _mstvisible="3"]]
112
113
114
115 == 2.3 Example to join LoRaWAN network ==
116
117 (% _msthash="315240" _msttexthash="9205482" _mstvisible="1" class="wikigeneratedid" %)
118 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.
119
120 (% _mstvisible="1" class="wikigeneratedid" %)
121 [[image:image-20220522232442-1.png||_mstalt="427830" _mstvisible="3" height="387" width="648"]]
122
123
124 (((
125 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:
126 )))
127
128
129
130 === 2.3.1 Step 1: Create Device n TTN ===
131
132 (((
133 Create a device in TTN V3 with the OTAA keys from LHT65N.
134 )))
135
136 (((
137 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
138 )))
139
140 [[image:image-20220617150003-1.jpeg]]
141
142 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
143
144 Add APP EUI in the application.
145
146
147 [[image:image-20220522232916-3.png||_mstalt="430495" _mstvisible="3"]]
148
149
150 [[image:image-20220522232932-4.png||_mstalt="430157" _mstvisible="3"]]
151
152
153 [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
154
155
156 Note: LHT65N use same payload as LHT65.
157
158
159 [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
160
161
162 Input APP EUI,  APP KEY and DEV EUI:
163
164
165 [[image:image-20220522233118-7.png||_mstalt="430430" _mstvisible="3"]]
166
167
168
169
170 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
171
172 (((
173 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.
174 )))
175
176 [[image:image-20220522233300-8.png||_mstalt="428389" _mstvisible="3" height="219" width="722"]]
177
178
179
180
181 == 2.4 Uplink Payload ==
182
183 (((
184 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.
185 )))
186
187 (((
188 After each uplink, the (% _mstvisible="3" style="color:blue" %)**BLUE LED**(%%) will blink once.
189 )))
190
191 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:426px" %)
192 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 97px;" %)(% _mstvisible="5" %)
193 (((
194 (% _mstvisible="6" %)
195 (% _msthash="1817478" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
196 )))|=(% _mstvisible="4" style="width: 39px;" %)(% _mstvisible="5" %)
197 (((
198 (% _mstvisible="6" %)
199 (% _msthash="1817479" _msttexthash="4550" _mstvisible="8" %)**2**
200 )))|=(% _mstvisible="4" style="width: 100px;" %)(% _mstvisible="5" %)
201 (((
202 (% _mstvisible="6" %)
203 (% _msthash="1817480" _msttexthash="4550" _mstvisible="8" %)**2**
204 )))|=(% _mstvisible="4" style="width: 77px;" %)(% _mstvisible="5" %)
205 (((
206 (% _mstvisible="6" %)
207 (% _msthash="1817481" _msttexthash="4550" _mstvisible="8" %)**2**
208 )))|=(% _mstvisible="4" style="width: 47px;" %)(% _mstvisible="5" %)
209 (((
210 (% _mstvisible="6" %)
211 (% _msthash="1817482" _msttexthash="4459" _mstvisible="8" %)**1**
212 )))|=(% _mstvisible="4" style="width: 51px;" %)(% _mstvisible="5" %)
213 (((
214 (% _mstvisible="6" %)
215 (% _msthash="1817483" _msttexthash="4732" _mstvisible="8" %)**4**
216 )))
217 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:97px" %)(% _mstvisible="5" %)
218 (((
219 (% _mstvisible="6" %)
220 (% _msthash="1817484" _msttexthash="60203" _mstvisible="8" %)**Value**
221 )))|(% _mstvisible="4" style="width:39px" %)(% _mstvisible="5" %)
222 (((
223 (% _mstvisible="6" %)
224 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo" _msthash="1817485" _msttexthash="22594" _mstvisible="7"]]
225 )))|(% _mstvisible="4" style="width:100px" %)(% _mstvisible="5" %)
226 (((
227 (% _mstvisible="6" %)
228 (((
229 (% _mstvisible="7" %)
230 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224742" _msttexthash="405769" _mstvisible="8"]]
231 )))
232 )))|(% _mstvisible="4" style="width:77px" %)(% _mstvisible="5" %)
233 (((
234 (% _mstvisible="6" %)
235 (((
236 (% _mstvisible="7" %)
237 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2224743" _msttexthash="105872" _mstvisible="8"]]
238 )))
239
240 (% _mstvisible="6" %)
241 (((
242 (% _mstvisible="7" %)
243 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224744" _msttexthash="117429" _mstvisible="8"]]
244 )))
245 )))|(% _mstvisible="4" style="width:47px" %)(% _mstvisible="5" %)
246 (((
247 (% _mstvisible="6" %)
248 [[Ext>>||anchor="H2.4.5Ext23" _msthash="1817486" _msttexthash="32331" _mstvisible="7"]] #
249 )))|(% _mstvisible="4" style="width:51px" %)(% _mstvisible="5" %)
250 (((
251 (% _mstvisible="6" %)
252 [[Ext value>>||anchor="H2.4.6Extvalue" _msthash="1817487" _msttexthash="116545" _mstvisible="7"]]
253 )))
254
255 * The First 6 bytes: has fix meanings for every LHT65N.
256 * The 7th byte (EXT #): defines the external sensor model.
257 * 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.)
258
259
260 === 2.4.1 Decoder in TTN V3 ===
261
262 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.
263
264 Below is the position to put the decoder and LHT65N decoder can be download from here:
265
266
267 [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0 >>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0||_msthash="315253" _msttexthash="3509064" _mstvisible="2"]]
268
269
270 [[image:image-20220522234118-10.png||_mstalt="451464" _mstvisible="3" height="353" width="729"]]
271
272
273
274
275 === 2.4.2 BAT-Battery Info ===
276
277 These two bytes of BAT include the battery state and the actually voltage
278
279 [[image:image-20220523152839-18.png||_mstalt="457613" _mstvisible="3"]]
280
281
282 [[image:image-20220522235639-1.png||_mstalt="431392" _mstvisible="3" height="139" width="727"]]
283
284
285 Check the battery voltage for LHT65N.
286
287 * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
288 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
289
290 === 2.4.3 Built-in Temperature ===
291
292 [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
293
294 * Temperature:  0x0ABB/100=27.47℃
295
296 [[image:image-20220522235639-3.png||_mstalt="432120" _mstvisible="3"]]
297
298 * Temperature:  (0xF5C6-65536)/100=-26.18℃
299
300 === 2.4.4 Built-in Humidity ===
301
302 [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
303
304 * Humidity:    0x025C/10=60.4%
305
306 === 2.4.5 Ext # ===
307
308 Bytes for External Sensor:
309
310 [[image:image-20220523152822-17.png||_mstalt="454545" _mstvisible="3"]]
311
312
313
314 === 2.4.6 Ext value ===
315
316 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
317
318
319 [[image:image-20220522235639-5.png||_mstalt="432848" _mstvisible="3"]]
320
321
322 * DS18B20 temp=0x0ADD/100=27.81℃
323
324 The last 2 bytes of data are meaningless
325
326 [[image:image-20220522235639-6.png||_mstalt="433212" _mstvisible="3"]]
327
328
329 * External temperature= (0xF54F-65536)/100=-27.37℃
330
331 The last 2 bytes of data are meaningless
332
333 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
334
335
336
337 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
338
339 (((
340 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:
341 )))
342
343 (((
344
345 )))
346
347 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
348 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 96px;" %)(% _mstvisible="5" %)
349 (((
350 (% _mstvisible="6" %)
351 (% _msthash="1817488" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
352 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
353 (((
354 (% _mstvisible="6" %)
355 (% _msthash="1817489" _msttexthash="4550" _mstvisible="8" %)**2**
356 )))|=(% _mstvisible="4" style="width: 99px;" %)(% _mstvisible="5" %)
357 (((
358 (% _mstvisible="6" %)
359 (% _msthash="1817490" _msttexthash="4550" _mstvisible="8" %)**2**
360 )))|=(% _mstvisible="4" style="width: 132px;" %)(% _mstvisible="5" %)
361 (((
362 (% _mstvisible="6" %)
363 (% _msthash="1817491" _msttexthash="4550" _mstvisible="8" %)**2**
364 )))|=(% _mstvisible="4" style="width: 54px;" %)(% _mstvisible="5" %)
365 (((
366 (% _mstvisible="6" %)
367 (% _msthash="1817492" _msttexthash="4459" _mstvisible="8" %)**1**
368 )))|=(% _mstvisible="4" style="width: 64px;" %)(% _mstvisible="5" %)
369 (((
370 (% _mstvisible="6" %)
371 (% _msthash="1817493" _msttexthash="4732" _mstvisible="8" %)**4**
372 )))
373 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:96px" %)(% _mstvisible="5" %)
374 (((
375 (% _mstvisible="6" %)
376 (% _msthash="1817494" _msttexthash="60203" _mstvisible="8" %)**Value**
377 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
378 (((
379 (% _mstvisible="6" %)
380 [[External temperature>>||anchor="H4.2SetExternalSensorMode" _msthash="1817495" _msttexthash="426517" _mstvisible="7"]]
381 )))|(% _mstvisible="4" style="width:99px" %)(% _mstvisible="5" %)
382 (((
383 (% _mstvisible="6" %)
384 (((
385 (% _mstvisible="7" %)
386 [[Built-In>>||anchor="H2.4.3Built-inTemperature" _msthash="2224745" _msttexthash="100464" _mstvisible="8"]]
387 )))
388
389 (% _mstvisible="6" %)
390 (((
391 (% _mstvisible="7" %)
392 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224746" _msttexthash="184041" _mstvisible="8"]]
393 )))
394 )))|(% _mstvisible="4" style="width:132px" %)(% _mstvisible="5" %)
395 (((
396 (% _mstvisible="6" %)
397 (((
398 (% _msthash="2224747" _msttexthash="136331" _mstvisible="7" %)
399 BAT Status &
400 )))
401
402 (% _mstvisible="6" %)
403 (((
404 (% _mstvisible="7" %)
405 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224748" _msttexthash="311181" _mstvisible="8"]]
406 )))
407 )))|(% _mstvisible="4" style="width:54px" %)(% _mstvisible="5" %)
408 (((
409 (% _msthash="1817496" _msttexthash="147225" _mstvisible="6" %)
410 Status & Ext
411 )))|(% _mstvisible="4" style="width:64px" %)(% _mstvisible="5" %)
412 (((
413 (% _mstvisible="6" %)
414 (((
415 (% _mstvisible="7" %)
416 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2224749" _msttexthash="227175" _mstvisible="8"]]
417 )))
418 )))
419
420 (% _mstvisible="1" %)
421 * (% _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**
422
423 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:469px" %)
424 (% _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]
425 (% _mstvisible="3" %)|(% _msthash="1230921" _msttexthash="60203" _mstvisible="4" style="width:65px" %)Value|(% _mstvisible="4" style="width:267px" %)(% _mstvisible="5" %)
426 (((
427 (% _msthash="1817497" _msttexthash="128427" _mstvisible="6" %)
428 BAT Status
429
430 (% _msthash="1817498" _msttexthash="472784" _mstvisible="6" %)
431 00(b): Ultra Low ( BAT <= 2.50v)
432
433 (% _msthash="1817499" _msttexthash="483678" _mstvisible="6" %)
434 01(b): Low  (2.50v <=BAT <= 2.55v)
435
436 (% _msthash="1817500" _msttexthash="440791" _mstvisible="6" %)
437 10(b): OK   (2.55v <= BAT <=2.65v)
438
439 (% _msthash="1817501" _msttexthash="334191" _mstvisible="6" %)
440 11(b): Good   (BAT >= 2.65v)
441 )))|(% _mstvisible="4" style="width:134px" %)(% _mstvisible="5" %)
442 (((
443 (% _mstvisible="6" %)
444 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="1817502" _msttexthash="311181" _mstvisible="7"]]
445
446 (% _mstvisible="6" %)
447
448 )))
449
450 * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
451
452 [[image:image-20220523152434-16.png||_mstalt="453921" _mstvisible="3"]]
453
454 * Poll Message Flag:  1: This message is a poll message reply, 0: means this is a normal uplink.
455 * 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.
456 * 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)
457
458 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
459
460 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
461
462 be used to power the external ADC sensor; user can control the power on time for this
463
464 sensor by setting:
465
466 AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)Time to power this sensor, from 0 ~~ 65535ms
467
468
469
470 == 2.5 Show data on Datacake ==
471
472 (((
473 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:
474 )))
475
476 (((
477
478 )))
479
480 (((
481 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
482 )))
483
484 (((
485 (% 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.
486 )))
487
488 (((
489
490 )))
491
492 (((
493 Add Datacake:
494 )))
495
496
497 [[image:image-20220523000825-7.png||_mstalt="429884" _mstvisible="3" height="262" width="583"]]
498
499
500
501 Select default key as Access Key:
502
503
504 [[image:image-20220523000825-8.png||_mstalt="430248" _mstvisible="3" height="453" width="406"]]
505
506
507 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/||_mstvisible="2"]]) , add LHT65 device.
508
509
510 [[image:image-20220523000825-9.png||_mstalt="430612" _mstvisible="3" height="366" width="392"]]
511
512
513 [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
514
515
516
517 == 2.6 Datalog Feature ==
518
519 (((
520 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.
521 )))
522
523
524
525 === 2.6.1 Ways to get datalog via LoRaWAN ===
526
527 There are two methods:
528
529 1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specify time range.
530 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.
531
532
533 === 2.6.2 Unix TimeStamp ===
534
535
536 LHT65N uses Unix TimeStamp format based on
537
538
539 [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
540
541
542
543 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
544
545 Below is the converter example
546
547 [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
548
549 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
550
551
552
553 === 2.6.3 Set Device Time ===
554
555 There are two ways to set device's time:
556
557 **~1. Through LoRaWAN MAC Command (Default settings)**
558
559 User need to set SYNCMOD=1 to enable sync time via MAC command.
560
561 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).
562
563 (% 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.
564
565
566 **2. Manually Set Time**
567
568 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
569
570
571
572 === 2.6.4 Poll sensor value ===
573
574 User can poll sensor value based on timestamps from the server. Below is the downlink command.
575
576 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
577
578
579 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.
580
581 For example, downlink command **31 5FC5F350 5FC6 0160 05**
582
583 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
584
585 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
586
587
588
589 === 2.6.5 Datalog Uplink payload ===
590
591 (% _msthash="315267" _msttexthash="2245087" _mstvisible="1" %)
592 The Datalog poll reply uplink will use below payload format.
593
594 (% _mstvisible="1" %)
595 (((
596 (% _mstvisible="2" %)
597 (% _msthash="506080" _msttexthash="451581" _mstvisible="4" %)**Retrieval data payload**
598 )))
599
600 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
601 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 93px;" %)(% _mstvisible="5" %)
602 (((
603 (% _mstvisible="6" %)
604 (((
605 (% _mstvisible="7" %)
606 (% _msthash="2224750" _msttexthash="161122" _mstvisible="9" %)**Size(bytes)**
607 )))
608 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
609 (((
610 (% _mstvisible="6" %)
611 (((
612 (% _mstvisible="7" %)
613 (% _msthash="2224751" _msttexthash="4550" _mstvisible="9" %)**2**
614 )))
615 )))|=(% _mstvisible="4" style="width: 102px;" %)(% _mstvisible="5" %)
616 (((
617 (% _mstvisible="6" %)
618 (((
619 (% _mstvisible="7" %)
620 (% _msthash="2224752" _msttexthash="4550" _mstvisible="9" %)**2**
621 )))
622 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
623 (((
624 (% _mstvisible="6" %)
625 (((
626 (% _mstvisible="7" %)
627 (% _msthash="2224753" _msttexthash="4550" _mstvisible="9" %)**2**
628 )))
629 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
630 (((
631 (% _mstvisible="6" %)
632 (((
633 (% _mstvisible="7" %)
634 (% _msthash="2224754" _msttexthash="4459" _mstvisible="9" %)**1**
635 )))
636 )))|=(% _mstvisible="4" style="width: 48px;" %)(% _mstvisible="5" %)
637 (((
638 (% _mstvisible="6" %)
639 (((
640 (% _mstvisible="7" %)
641 (% _msthash="2224755" _msttexthash="4732" _mstvisible="9" %)**4**
642 )))
643 )))
644 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:93px" %)(% _mstvisible="5" %)
645 (((
646 (% _mstvisible="6" %)
647 (((
648 (% _mstvisible="7" %)
649 (% _msthash="2224756" _msttexthash="60203" _mstvisible="9" %)**Value**
650 )))
651 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
652 (((
653 (% _mstvisible="6" %)
654 (((
655 (% _mstvisible="7" %)
656 [[External sensor data>>||anchor="H2.4.6Extvalue" _msthash="2224757" _msttexthash="386672" _mstvisible="8"]]
657 )))
658 )))|(% _mstvisible="4" style="width:102px" %)(% _mstvisible="5" %)
659 (((
660 (% _mstvisible="6" %)
661 (((
662 (% _mstvisible="7" %)
663 (((
664 (% _mstvisible="8" %)
665 [[Built In>>||anchor="H2.4.3Built-inTemperature" _msthash="2671864" _msttexthash="91065" _mstvisible="9"]]
666 )))
667 )))
668
669 (% _mstvisible="6" %)
670 (((
671 (% _mstvisible="7" %)
672 (((
673 (% _mstvisible="8" %)
674 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2671865" _msttexthash="184041" _mstvisible="9"]]
675 )))
676 )))
677 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
678 (((
679 (% _mstvisible="6" %)
680 (((
681 (% _mstvisible="7" %)
682 (((
683 (% _mstvisible="8" %)
684 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2671866" _msttexthash="105872" _mstvisible="9"]]
685 )))
686 )))
687
688 (% _mstvisible="6" %)
689 (((
690 (% _mstvisible="7" %)
691 (((
692 (% _mstvisible="8" %)
693 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2671867" _msttexthash="117429" _mstvisible="9"]]
694 )))
695 )))
696 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
697 (((
698 (% _mstvisible="6" %)
699 (((
700 (% _msthash="2224758" _msttexthash="390390" _mstvisible="7" %)
701 Poll message flag & Ext
702 )))
703 )))|(% _mstvisible="4" style="width:48px" %)(% _mstvisible="5" %)
704 (((
705 (% _mstvisible="6" %)
706 (((
707 (% _mstvisible="7" %)
708 (((
709 (% _mstvisible="8" %)
710 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2671868" _msttexthash="227175" _mstvisible="9"]]
711 )))
712 )))
713
714 (% _mstvisible="6" %)
715 (((
716 (% _mstvisible="7" %)
717 (((
718 (% _mstvisible="8" %)
719
720 )))
721 )))
722 )))
723
724 (% _mstvisible="1" %)
725 (% _msthash="315268" _msttexthash="390390" _mstvisible="3" %)**Poll message flag & Ext**
726
727 (% _mstvisible="1" %)
728 [[image:image-20220523152208-14.png||_mstalt="452920" _mstvisible="3"]]
729
730 (% _mstvisible="1" %)
731 (((
732 (% _mstvisible="2" %)
733 (((
734 (% _msthash="736723" _msttexthash="2005003" _mstvisible="3" %)
735 Poll Message Flag: 1: This message is a poll message reply.
736 )))
737 )))
738
739 (% _mstvisible="1" %)
740 * (% _mstvisible="3" %)
741 (((
742 (% _mstvisible="4" %)
743 (((
744 (% _msthash="1197157" _msttexthash="561548" _mstvisible="5" %)
745 Poll Message Flag is set to 1.
746 )))
747 )))
748 * (% _mstvisible="3" %)
749 (((
750 (% _mstvisible="4" %)
751 (((
752 (% _msthash="1197158" _msttexthash="9284964" _mstvisible="5" %)
753 Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
754 )))
755 )))
756
757 (% _mstvisible="1" %)
758 (((
759 (% _mstvisible="2" %)
760 (((
761 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
762
763
764 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
765 For example, in US915 band, the max payload for different DR is:
766 )))
767 )))
768
769 (% _mstvisible="1" %)
770 (((
771 (% _mstvisible="2" %)
772 (((
773 (% _msthash="736725" _msttexthash="1065532" _mstvisible="3" %)
774 a) DR0: max is 11 bytes so one entry of data
775 )))
776 )))
777
778 (% _mstvisible="1" %)
779 (((
780 (% _mstvisible="2" %)
781 (((
782 (% _msthash="736726" _msttexthash="3265665" _mstvisible="3" %)
783 b) DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
784 )))
785 )))
786
787 (% _mstvisible="1" %)
788 (((
789 (% _mstvisible="2" %)
790 (((
791 (% _msthash="736727" _msttexthash="1454115" _mstvisible="3" style="text-align: left;" %)
792 c) DR2: total payload includes 11 entries of data
793 )))
794 )))
795
796 (% _mstvisible="1" %)
797 (((
798 (% _mstvisible="2" %)
799 (((
800 (% _msthash="736728" _msttexthash="1483924" _mstvisible="3" style="text-align: left;" %)
801 d) DR3: total payload includes 22 entries of data.
802 )))
803 )))
804
805 (% _mstvisible="1" %)
806 (((
807 (% _mstvisible="2" %)
808 (((
809 (% _msthash="736729" _msttexthash="5848349" _mstvisible="3" style="text-align: left;" %)
810 If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0   
811 )))
812 )))
813
814
815 (% _mstvisible="1" style="text-align: left;" %)
816 (% _msthash="315269" _msttexthash="104767" _mstvisible="3" %)**Example:**
817
818 (% _msthash="315270" _msttexthash="913822" _mstvisible="1" style="text-align: left;" %)
819 If LHT65N has below data inside Flash:
820
821 (% _mstvisible="1" %)
822 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
823
824 (% _mstvisible="1" %)
825 (((
826 (% _msthash="506081" _msttexthash="1663961" _mstvisible="2" style="text-align: left;" %)
827 If user sends below downlink command: (% _mstvisible="3" style="background-color:yellow" %)3160065F9760066DA705
828 )))
829
830 (% _mstvisible="1" %)
831 (((
832 (% _msthash="506082" _msttexthash="1092494" _mstvisible="2" style="text-align: left;" %)
833 Where : Start time: 60065F97 = time 21/1/19 04:27:03
834 )))
835
836 (% _mstvisible="1" %)
837 (((
838 (% _msthash="506083" _msttexthash="737269" _mstvisible="2" style="text-align: left;" %)
839 Stop time 60066DA7= time 21/1/19 05:27:(% _msthash="903005" _msttexthash="9672" _mstvisible="2" %)03
840 )))
841
842 (% _mstvisible="1" %)
843 (((
844 (% _mstvisible="2" %)
845
846 )))
847
848 (% _mstvisible="1" %)
849 (((
850 (% _msthash="506084" _msttexthash="751218" _mstvisible="2" style="text-align: left;" %)
851 LHT65N will uplink this payload.
852 )))
853
854 (% _mstvisible="1" %)
855 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
856
857 (% _msthash="315271" _msttexthash="12012546" _mstvisible="1" style="text-align: left;" %)
858 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
859
860 (% _msthash="315237" _msttexthash="1385839" %)
861 Where the first 11 bytes is for the first entry:
862
863 (% _msthash="315238" _msttexthash="274846" %)
864 7FFF089801464160065F97
865
866 (% _msthash="315239" _msttexthash="617435" %)
867 Ext sensor data=0x7FFF/100=327.67
868
869 (% _msthash="315240" _msttexthash="270543" %)
870 Temp=0x0898/100=22.00
871
872 (% _msthash="315241" _msttexthash="211783" %)
873 Hum=0x0146/10=32.6
874
875 (% _msthash="315242" _msttexthash="1569776" %)
876 poll message flag & Ext=0x41,means reply data,Ext=1
877
878 (% _msthash="315243" _msttexthash="1120509" %)
879 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
880
881
882
883 == 2.7 Alarm Mode ==
884
885 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.
886
887 (% style="color:red" %)Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.
888
889 **AT COMMAND FOR ALARM MODE:**
890
891 (% _mstvisible="1" class="box infomessage" %)
892 (((
893 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled)
894
895 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
896
897 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
898
899 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
900
901 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
902 )))
903
904
905
906
907 == 2.8 LED Indicator ==
908
909 The LHT65 has a triple color LED which for easy showing different stage .
910
911 While user press ACT button, the LED will work as per LED status with ACT button.
912
913 In a normal working state:
914
915 * For each uplink, the BLUE LED or RED LED will blink once.
916 BLUE LED when external sensor is connected.
917 * RED LED when external sensor is not connected
918 * For each success downlink, the PURPLE LED will blink once
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 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
957
958 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
959
960 * AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
961
962 * LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
963
964 There are two kinds of commands to configure LHT65N, they are:
965
966 * (% style="color:#4f81bd" %)**General Commands**.
967
968 These commands are to configure:
969
970 1. General system settings like: uplink interval.
971 1. LoRaWAN protocol & radio-related commands.
972
973 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]]
974
975 * (% style="color:#4f81bd" %)**Commands special design for LHT65N**
976
977 These commands are only valid for LHT65N, as below:
978
979
980 == 4.1 Set Transmit Interval Time ==
981
982 Feature: Change LoRaWAN End Node Transmit Interval.
983
984 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
985
986 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
987
988
989 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
990
991 Format: Command Code (0x01) followed by 3 bytes time value.
992
993 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
994
995 * **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
996
997 * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
998
999 == 4.2 Set External Sensor Mode ==
1000
1001 Feature: Change External Sensor Mode.
1002
1003 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1004
1005 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1006
1007
1008 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1009
1010 Total bytes: 2 ~~ 5 bytes
1011
1012 **Example:**
1013
1014 * 0xA201: Set external sensor type to E1
1015
1016 * 0xA209: Same as AT+EXT=9
1017
1018 * 0xA20702003c: Same as AT+SETCNT=60
1019
1020 == 4.3 Enable/Disable uplink Temperature probe ID ==
1021
1022 (((
1023 Feature: If PID is enabled, device will send the temperature probe ID on:
1024 )))
1025
1026 * (((
1027 First Packet after OTAA Join
1028 )))
1029 * (((
1030 Every 24 hours since the first packet.
1031 )))
1032
1033 (((
1034 PID is default set to disable (0)
1035 )))
1036
1037 (% style="color:#4f81bd" %)**AT Command:**
1038
1039 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1040
1041
1042 (% style="color:#4f81bd" %)**Downlink Command:**
1043
1044 * **0xA800**  **~-~->** AT+PID=0
1045 * **0xA801**     **~-~->** AT+PID=1
1046
1047 == 4.4 Set Password ==
1048
1049 Feature: Set device password, max 9 digits
1050
1051 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1052
1053 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1054
1055
1056 (% style="color:#4f81bd" %)**Downlink Command:**
1057
1058 No downlink command for this feature.
1059
1060
1061
1062 == 4.5 Quit AT Command ==
1063
1064 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1065
1066 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1067
1068 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1069
1070
1071 (% style="color:#4f81bd" %)**Downlink Command:**
1072
1073 No downlink command for this feature.
1074
1075
1076
1077 == 4.6 Set to sleep mode ==
1078
1079 Feature: Set device to sleep mode
1080
1081 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1082 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1083
1084 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1085
1086 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1087
1088
1089 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1090
1091 * There is no downlink command to set to Sleep mode.
1092
1093
1094 == 4.7 Set system time ==
1095
1096 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1097
1098 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1099
1100 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1101
1102
1103 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1104
1105 0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1106
1107
1108
1109 == 4.8 Set Time Sync Mode ==
1110
1111 (((
1112 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1113 )))
1114
1115 (((
1116 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.
1117 )))
1118
1119 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1120
1121 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1122
1123
1124 (% style="color:#4f81bd" %)**Downlink Command:**
1125
1126 0x28 01 ~/~/ Same As AT+SYNCMOD=1
1127 0x28 00 ~/~/ Same As AT+SYNCMOD=0
1128
1129
1130
1131 == 4.9 Set Time Sync Interval ==
1132
1133 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1134
1135 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1136
1137 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1138
1139
1140 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1141
1142 **0x29 0A** ~/~/ Same as AT+SYNCTDC=0x0A
1143
1144
1145
1146 == 4.10 Print data entries base on page. ==
1147
1148 Feature: Print the sector data from start page to stop page (max is 416 pages).
1149
1150 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1151
1152 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1153
1154
1155 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1156
1157 No downlink commands for feature
1158
1159
1160
1161 == 4.11 Print last few data entries. ==
1162
1163 Feature: Print the last few data entries
1164
1165 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1166
1167 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1168
1169
1170 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1171
1172 No downlink commands for feature
1173
1174
1175
1176 == 4.12 Clear Flash Record ==
1177
1178 Feature: Clear flash storage for data log feature.
1179
1180
1181 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1182
1183 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1184
1185
1186 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1187
1188 * Example: 0xA301 ~/~/Same as AT+CLRDTA
1189
1190
1191 == 4.13 Auto Send None-ACK messages ==
1192
1193 (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
1194 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.
1195
1196 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1197
1198 (% _msthash="315396" _msttexthash="734682" _mstvisible="1" %)
1199 The default factory setting is 0
1200
1201 (% _mstvisible="1" border="1" style="background-color:#ffffcc; color:green; width:450px" %)
1202 (% _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**
1203 (% _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
1204
1205 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1206
1207 * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1208
1209 = 5. Battery & How to replace =
1210
1211 == 5.1 Battery Type ==
1212
1213 (((
1214 (((
1215 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.
1216 )))
1217 )))
1218
1219 (((
1220
1221 )))
1222
1223 (((
1224 (((
1225 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1226 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1227 )))
1228 )))
1229
1230 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1231
1232
1233 == 5.2 Replace Battery ==
1234
1235 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.
1236
1237 [[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"]]
1238
1239
1240 == 5.3 Battery Life Analyze ==
1241
1242 (((
1243 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:
1244 [[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]]
1245 )))
1246
1247 (((
1248
1249 )))
1250
1251 (((
1252 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]]
1253 )))
1254
1255
1256
1257 = 6. FAQ =
1258
1259 == 6.1 How to use AT Command? ==
1260
1261 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.
1262
1263 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1264
1265
1266 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1267
1268 (% _msthash="506062" _msttexthash="1187732" %)
1269 **✓ (% style="background-color:yellow" %)USB to TTL GND <~-~->GND(%%)**
1270
1271 (% _msthash="506063" _msttexthash="1158313" %)**✓  **(% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1272
1273 (% _msthash="506064" _msttexthash="1175629" %)**✓  **(% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1274
1275 (% _msthash="506065" _msttexthash="1164696" %)**✓  **(% style="background-color:yellow" %)**USB to TTL 3.3V <~-~-> D-**
1276
1277
1278 (((
1279 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.
1280 )))
1281
1282
1283 Input password and ATZ to activate LHT65N,As shown below:
1284
1285 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1286
1287
1288 (% _msthash="506066" _msttexthash="544869" %)
1289 AT Command List is as below:
1290
1291 (% _msthash="506067" _msttexthash="361920" %)
1292 AT+<CMD>? :  Help on <CMD>
1293
1294 (% _msthash="506068" _msttexthash="243061" %)
1295 AT+<CMD> :  Run <CMD>
1296
1297 (% _msthash="506069" _msttexthash="704197" %)
1298 AT+<CMD>=<value> :  Set the value
1299
1300 (% _msthash="506070" _msttexthash="455676" %)
1301 AT+<CMD>=? :  Get the value
1302
1303 (% _msthash="506071" _msttexthash="670553" %)
1304 AT+DEBUG:  Set more info output
1305
1306 (% _msthash="506072" _msttexthash="485888" %)
1307 ATZ:  Trig a reset of the MCU
1308
1309 (% _msthash="506073" _msttexthash="2068872" %)
1310 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1311
1312 (% _msthash="506074" _msttexthash="689169" %)
1313 AT+DEUI:  Get or Set the Device EUI
1314
1315 (% _msthash="506075" _msttexthash="960414" %)
1316 AT+DADDR:  Get or Set the Device Address
1317
1318 (% _msthash="506076" _msttexthash="1079897" %)
1319 AT+APPKEY:  Get or Set the Application Key
1320
1321 (% _msthash="506077" _msttexthash="1326143" %)
1322 AT+NWKSKEY:  Get or Set the Network Session Key
1323
1324 (% _msthash="506078" _msttexthash="1573000" %)
1325 AT+APPSKEY:  Get or Set the Application Session Key
1326
1327 (% _msthash="506079" _msttexthash="1041729" %)
1328 AT+APPEUI:  Get or Set the Application EUI
1329
1330 (% _msthash="506080" _msttexthash="2104206" %)
1331 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1332
1333 (% _msthash="506081" _msttexthash="3369288" %)
1334 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1335
1336 (% _msthash="506082" _msttexthash="1894529" %)
1337 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1338
1339 (% _msthash="506083" _msttexthash="3864172" %)
1340 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1341
1342 (% _msthash="506084" _msttexthash="1712204" %)
1343 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1344
1345 (% _msthash="506085" _msttexthash="1281202" %)
1346 AT+RX2FQ:  Get or Set the Rx2 window frequency
1347
1348 (% _msthash="506086" _msttexthash="2796781" %)
1349 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1350
1351 (% _msthash="506087" _msttexthash="3285165" %)
1352 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1353
1354 (% _msthash="506088" _msttexthash="3286179" %)
1355 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1356
1357 (% _msthash="506089" _msttexthash="4703803" %)
1358 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1359
1360 (% _msthash="506090" _msttexthash="4704999" %)
1361 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1362
1363 (% _msthash="506091" _msttexthash="1528683" %)
1364 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1365
1366 (% _msthash="506092" _msttexthash="757185" %)
1367 AT+NWKID:  Get or Set the Network ID
1368
1369 (% _msthash="506093" _msttexthash="1156597" %)
1370 AT+FCU:  Get or Set the Frame Counter Uplink
1371
1372 (% _msthash="506094" _msttexthash="1273987" %)
1373 AT+FCD:  Get or Set the Frame Counter Downlink
1374
1375 (% _msthash="506095" _msttexthash="859222" %)
1376 AT+CLASS:  Get or Set the Device Class
1377
1378 (% _msthash="506096" _msttexthash="384852" %)
1379 AT+JOIN:  Join network
1380
1381 (% _msthash="506097" _msttexthash="548626" %)
1382 AT+NJS:  Get the join status
1383
1384 (% _msthash="506098" _msttexthash="2546206" %)
1385 AT+SENDB:  Send hexadecimal data along with the application port
1386
1387 (% _msthash="506099" _msttexthash="1932307" %)
1388 AT+SEND:  Send text data along with the application port
1389
1390 (% _msthash="506100" _msttexthash="3560557" %)
1391 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1392
1393 (% _msthash="506101" _msttexthash="1429701" %)
1394 AT+RECV:  Print last received data in raw format
1395
1396 (% _msthash="506102" _msttexthash="1735981" %)
1397 AT+VER:  Get current image version and Frequency Band
1398
1399 (% _msthash="506103" _msttexthash="1189474" %)
1400 AT+CFM:  Get or Set the confirmation mode (0-1)
1401
1402 (% _msthash="506104" _msttexthash="1718210" %)
1403 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1404
1405 (% _msthash="506105" _msttexthash="1339403" %)
1406 AT+SNR:  Get the SNR of the last received packet
1407
1408 (% _msthash="506106" _msttexthash="1452009" %)
1409 AT+RSSI:  Get the RSSI of the last received packet
1410
1411 (% _msthash="506107" _msttexthash="2768142" %)
1412 AT+TDC:  Get or set the application data transmission interval in ms
1413
1414 (% _msthash="506108" _msttexthash="1083914" %)
1415 AT+PORT:  Get or set the application port
1416
1417 (% _msthash="506109" _msttexthash="622440" %)
1418 AT+DISAT:  Disable AT commands
1419
1420 (% _msthash="506110" _msttexthash="868361" %)
1421 AT+PWORD: Set password, max 9 digits
1422
1423 (% _msthash="506111" _msttexthash="2210299" %)
1424 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1425
1426 (% _msthash="506112" _msttexthash="2113462" %)
1427 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1428
1429 (% _msthash="506113" _msttexthash="2087423" %)
1430 AT+PDTA:  Print the sector data from start page to stop page
1431
1432 (% _msthash="506114" _msttexthash="1063127" %)
1433 AT+PLDTA:  Print the last few sets of data
1434
1435 (% _msthash="506115" _msttexthash="1999426" %)
1436 AT+CLRDTA:  Clear the storage, record position back to 1st
1437
1438 (% _msthash="506116" _msttexthash="442130" %)
1439 AT+SLEEP:  Set sleep mode
1440
1441 (% _msthash="506117" _msttexthash="1080222" %)
1442 AT+EXT:  Get or Set external sensor model
1443
1444 (% _msthash="506118" _msttexthash="1309490" %)
1445 AT+BAT:  Get the current battery voltage in mV
1446
1447 (% _msthash="506119" _msttexthash="813891" %)
1448 AT+CFG:  Print all configurations
1449
1450 (% _msthash="506120" _msttexthash="551707" %)
1451 AT+WMOD:  Get or Set Work Mode
1452
1453 (% _msthash="506121" _msttexthash="2631499" %)
1454 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1455
1456 (% _msthash="506122" _msttexthash="3907150" %)
1457 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1458
1459 (% _msthash="506123" _msttexthash="854620" %)
1460 AT+SETCNT:  Set the count at present
1461
1462 (% _msthash="506124" _msttexthash="2554877" %)
1463 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1464
1465 (% _msthash="506125" _msttexthash="771849" %)
1466 AT+RPL:  Get or set response level
1467
1468 (% _msthash="506126" _msttexthash="1484314" %)
1469 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1470
1471 (% _msthash="506127" _msttexthash="741728" %)
1472 AT+LEAPSEC:  Get or Set Leap Second
1473
1474 (% _msthash="506128" _msttexthash="1694017" %)
1475 AT+SYNCMOD:  Get or Set time synchronization method
1476
1477 (% _msthash="506129" _msttexthash="2235948" %)
1478 AT+SYNCTDC:  Get or set time synchronization interval in day
1479
1480 (% _msthash="506130" _msttexthash="425542" %)
1481 AT+PID:  Get or set the PID
1482
1483
1484 == 6.2 Where to use AT commands and Downlink commands ==
1485
1486 (% _msthash="506131" _msttexthash="14585714" %)
1487 AT commands：
1488
1489 [[image:image-20220620153708-1.png||height="603" width="723"]]
1490
1491 (% _msthash="506132" _msttexthash="337922" %)
1492 Downlink commands:
1493
1494
1495 (% _msthash="506133" _msttexthash="33046" %)
1496 **TTN:**
1497
1498 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1499
1500
1501 (% _msthash="506134" _msttexthash="11113791" %)
1502 **Helium：**
1503
1504 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1505
1506
1507 (% _msthash="506135" _msttexthash="4159844" %)
1508 **Chirpstack:The downlink window will not be displayed until the network is accessed**
1509
1510 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1511
1512 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1513
1514
1515 (% _msthash="506136" _msttexthash="39286" %)
1516 **Aws:**
1517
1518 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1519
1520
1521
1522 == 6.3 How to change the uplink interval？ ==
1523
1524 [[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"]]
1525
1526
1527
1528 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1529
1530 [[image:image-20220615153355-1.png]]
1531
1532 [[image:1655802313617-381.png]]
1533
1534
1535 (((
1536 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.
1537 )))
1538
1539
1540 Input password and ATZ to activate LHT65N,As shown below:
1541
1542 [[image:image-20220615154519-3.png||height="672" width="807"]]
1543
1544
1545
1546 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1547
1548
1549 [[image:image-20220615153355-1.png]]
1550
1551
1552 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1553
1554 [[image:image-20220615170542-5.png]]
1555
1556
1557 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1558
1559 (% _msthash="506146" _msttexthash="52173160" %)
1560 First connect the four lines；(% style="display:none" %)
1561
1562 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1563
1564
1565 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1566
1567 [[image:image-20220621170938-2.png]]
1568
1569
1570 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1571
1572 [[image:image-20220615171334-6.png]]
1573
1574
1575 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1576
1577
1578 When this interface appears, it indicates that the download has been completed.
1579
1580 [[image:image-20220620160723-8.png]]
1581
1582
1583 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1584
1585
1586
1587 = 7. Order Info =
1588
1589
1590 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
1591
1592 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1593
1594 (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1595
1596 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1597
1598 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1599
1600 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1601
1602 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1603
1604 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1605
1606 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1607
1608 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1609
1610 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1611
1612 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1613
1614
1615 = 8. Packing Info =
1616
1617
1618 **Package Includes**:
1619
1620 * LHT65N Temperature & Humidity Sensor x 1
1621 * Optional external sensor
1622
1623 **Dimension and weight**:
1624
1625 * Device Size:  10 x 10 x 3.5 cm
1626 * Device Weight: 120.5g
1627
1628 = 9. Reference material =
1629
1630 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1631
1632 = 10. FCC Warning =
1633
1634 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1635
1636 (1) This device may not cause harmful interference；
1637
1638 (2) this device must accept any interference received, including interference that may cause undesired operation.