Skip to Content
Version 202.1 by Edwin Chen on 2022/10/06 19:27
Show last authors
1 (% style="text-align:center" %)
2 [[image:image-20220613162008-1.png||_mstalt="428142" height="510" width="334"]]
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
20 == 1.1 What is LHT65N Temperature & Humidity Sensor ==
21
22
23 (((
24 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.**
25 )))
26
27 (((
28 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.
29 )))
30
31 (((
32 LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
33 )))
34
35 (((
36 LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
37 )))
38
39 (((
40 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.
41 )))
42
43 (((
44 *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
45 )))
46
47
48
49 == 1.2 Features ==
50
51
52 * Wall mountable
53 * LoRaWAN v1.0.3 Class A protocol
54 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
55 * AT Commands to change parameters
56 * Remote configure parameters via LoRaWAN Downlink
57 * Firmware upgradeable via program port
58 * Built-in 2400mAh battery for up to 10 years of use.
59 * Built-in Temperature & Humidity sensor
60 * Optional External Sensors
61 * Tri-color LED to indicate working status
62 * Datalog feature (Max 3328 records)
63
64
65
66 == 1.3 Specification ==
67
68
69 (% style="color:#037691" %)**Built-in Temperature Sensor:**
70
71 * Resolution: 0.01 °C
72 * Accuracy Tolerance : Typ ±0.3 °C
73 * Long Term Drift: < 0.02 °C/yr
74 * Operating Range: -40 ~~ 85 °C
75
76 (% style="color:#037691" %)**Built-in Humidity Sensor:**
77
78 * Resolution: 0.04 %RH
79 * Accuracy Tolerance : Typ ±3 %RH
80 * Long Term Drift: < 0.02 °C/yr
81 * Operating Range: 0 ~~ 96 %RH
82
83 (% style="color:#037691" %)**External Temperature Sensor:**
84
85 * Resolution: 0.0625 °C
86 * ±0.5°C accuracy from -10°C to +85°C
87 * ±2°C accuracy from -55°C to +125°C
88 * Operating Range: -55 °C ~~ 125 °C
89
90
91
92 = 2. Connect LHT65N to IoT Server =
93
94
95 == 2.1 How does LHT65N work? ==
96
97
98 (((
99 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.
100 )))
101
102 (((
103 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.
104 )))
105
106
107
108 == 2.2 How to Activate LHT65N? ==
109
110
111 (((
112 The LHT65N has two working modes:
113 )))
114
115 * (((
116 (% 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.
117 )))
118 * (((
119 (% 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. 
120 )))
121
122 (((
123 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
124 )))
125
126
127 [[image:image-20220515123819-1.png||_mstalt="430742" _mstvisible="3" height="379" width="317"]]
128
129 [[image:image-20220525110604-2.png||_mstalt="427531" _mstvisible="3"]]
130
131
132
133 == 2.3 Example to join LoRaWAN network ==
134
135
136 (% _msthash="315240" _msttexthash="9205482" _mstvisible="1" class="wikigeneratedid" %)
137 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.
138
139
140 (% _mstvisible="1" class="wikigeneratedid" %)
141 [[image:image-20220522232442-1.png||_mstalt="427830" _mstvisible="3" height="387" width="648"]]
142
143
144 (((
145 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:
146 )))
147
148
149
150 === 2.3.1 Step 1: Create Device n TTN ===
151
152
153 (((
154 Create a device in TTN V3 with the OTAA keys from LHT65N.
155 )))
156
157 (((
158 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
159 )))
160
161 [[image:image-20220617150003-1.jpeg]]
162
163 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
164
165 Add APP EUI in the application.
166
167
168 [[image:image-20220522232916-3.png||_mstalt="430495" _mstvisible="3"]]
169
170
171 [[image:image-20220522232932-4.png||_mstalt="430157" _mstvisible="3"]]
172
173
174 [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
175
176
177
178 (% style="color:red" %)**Note: LHT65N use same payload as LHT65.**
179
180
181 [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
182
183
184 Input APP EUI,  APP KEY and DEV EUI:
185
186
187 [[image:image-20220522233118-7.png||_mstalt="430430" _mstvisible="3"]]
188
189
190
191
192 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
193
194
195 (((
196 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.
197 )))
198
199 [[image:image-20220522233300-8.png||_mstalt="428389" _mstvisible="3" height="219" width="722"]]
200
201
202
203
204 == 2.4 Uplink Payload ==
205
206
207 (((
208 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.
209 )))
210
211 (((
212 After each uplink, the (% _mstvisible="3" style="color:blue" %)**BLUE LED**(%%) will blink once.
213 )))
214
215 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:426px" %)
216 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 97px;" %)(% _mstvisible="5" %)
217 (((
218 (% _mstvisible="6" %)
219 (% _msthash="1817478" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
220 )))|=(% _mstvisible="4" style="width: 39px;" %)(% _mstvisible="5" %)
221 (((
222 (% _mstvisible="6" %)
223 (% _msthash="1817479" _msttexthash="4550" _mstvisible="8" %)**2**
224 )))|=(% _mstvisible="4" style="width: 100px;" %)(% _mstvisible="5" %)
225 (((
226 (% _mstvisible="6" %)
227 (% _msthash="1817480" _msttexthash="4550" _mstvisible="8" %)**2**
228 )))|=(% _mstvisible="4" style="width: 77px;" %)(% _mstvisible="5" %)
229 (((
230 (% _mstvisible="6" %)
231 (% _msthash="1817481" _msttexthash="4550" _mstvisible="8" %)**2**
232 )))|=(% _mstvisible="4" style="width: 47px;" %)(% _mstvisible="5" %)
233 (((
234 (% _mstvisible="6" %)
235 (% _msthash="1817482" _msttexthash="4459" _mstvisible="8" %)**1**
236 )))|=(% _mstvisible="4" style="width: 51px;" %)(% _mstvisible="5" %)
237 (((
238 (% _mstvisible="6" %)
239 (% _msthash="1817483" _msttexthash="4732" _mstvisible="8" %)**4**
240 )))
241 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:97px" %)(% _mstvisible="5" %)
242 (((
243 (% _mstvisible="6" %)
244 (% _msthash="1817484" _msttexthash="60203" _mstvisible="8" %)**Value**
245 )))|(% _mstvisible="4" style="width:39px" %)(% _mstvisible="5" %)
246 (((
247 (% _mstvisible="6" %)
248 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo" _msthash="1817485" _msttexthash="22594" _mstvisible="7"]]
249 )))|(% _mstvisible="4" style="width:100px" %)(% _mstvisible="5" %)
250 (((
251 (% _mstvisible="6" %)
252 (((
253 (% _mstvisible="7" %)
254 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224742" _msttexthash="405769" _mstvisible="8"]]
255 )))
256 )))|(% _mstvisible="4" style="width:77px" %)(% _mstvisible="5" %)
257 (((
258 (% _mstvisible="6" %)
259 (((
260 (% _mstvisible="7" %)
261 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2224743" _msttexthash="105872" _mstvisible="8"]]
262 )))
263
264 (% _mstvisible="6" %)
265 (((
266 (% _mstvisible="7" %)
267 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224744" _msttexthash="117429" _mstvisible="8"]]
268 )))
269 )))|(% _mstvisible="4" style="width:47px" %)(% _mstvisible="5" %)
270 (((
271 (% _mstvisible="6" %)
272 [[Ext>>||anchor="H2.4.5Ext23" _msthash="1817486" _msttexthash="32331" _mstvisible="7"]] #
273 )))|(% _mstvisible="4" style="width:51px" %)(% _mstvisible="5" %)
274 (((
275 (% _mstvisible="6" %)
276 [[Ext value>>||anchor="H2.4.6Extvalue" _msthash="1817487" _msttexthash="116545" _mstvisible="7"]]
277 )))
278
279 * The First 6 bytes: has fix meanings for every LHT65N.
280 * The 7th byte (EXT #): defines the external sensor model.
281 * 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.)
282
283
284
285
286 === 2.4.1 Decoder in TTN V3 ===
287
288
289 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.
290
291 Below is the position to put the decoder and LHT65N decoder can be download from here:
292
293
294 [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0 >>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0||_msthash="315253" _msttexthash="3509064" _mstvisible="2"]]
295
296
297 [[image:image-20220522234118-10.png||_mstalt="451464" _mstvisible="3" height="353" width="729"]]
298
299
300
301
302 === 2.4.2 BAT-Battery Info ===
303
304
305 These two bytes of BAT include the battery state and the actually voltage
306
307 [[image:image-20220523152839-18.png||_mstalt="457613" _mstvisible="3"]]
308
309
310 [[image:image-20220522235639-1.png||_mstalt="431392" _mstvisible="3" height="139" width="727"]]
311
312
313 Check the battery voltage for LHT65N.
314
315 * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
316 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
317
318
319
320
321 === 2.4.3 Built-in Temperature ===
322
323
324 [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
325
326 * Temperature:  0x0ABB/100=27.47℃
327
328 [[image:image-20220522235639-3.png||_mstalt="432120" _mstvisible="3"]]
329
330 * Temperature:  (0xF5C6-65536)/100=-26.18℃
331
332
333
334
335 === 2.4.4 Built-in Humidity ===
336
337
338 [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
339
340 * Humidity:    0x025C/10=60.4%
341
342
343
344
345 === 2.4.5 Ext # ===
346
347
348 Bytes for External Sensor:
349
350 [[image:image-20220523152822-17.png||_mstalt="454545" _mstvisible="3"]]
351
352
353
354 === 2.4.6 Ext value ===
355
356
357 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
358
359
360 [[image:image-20220522235639-5.png||_mstalt="432848" _mstvisible="3"]]
361
362
363 * DS18B20 temp=0x0ADD/100=27.81℃
364
365 The last 2 bytes of data are meaningless
366
367 [[image:image-20220522235639-6.png||_mstalt="433212" _mstvisible="3"]]
368
369
370 * External temperature= (0xF54F-65536)/100=-27.37℃
371
372 The last 2 bytes of data are meaningless
373
374 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
375
376
377
378 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
379
380
381 (((
382 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:
383 )))
384
385 (((
386
387 )))
388
389 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
390 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 96px;" %)(% _mstvisible="5" %)
391 (((
392 (% _mstvisible="6" %)
393 (% _msthash="1817488" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
394 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
395 (((
396 (% _mstvisible="6" %)
397 (% _msthash="1817489" _msttexthash="4550" _mstvisible="8" %)**2**
398 )))|=(% _mstvisible="4" style="width: 99px;" %)(% _mstvisible="5" %)
399 (((
400 (% _mstvisible="6" %)
401 (% _msthash="1817490" _msttexthash="4550" _mstvisible="8" %)**2**
402 )))|=(% _mstvisible="4" style="width: 132px;" %)(% _mstvisible="5" %)
403 (((
404 (% _mstvisible="6" %)
405 (% _msthash="1817491" _msttexthash="4550" _mstvisible="8" %)**2**
406 )))|=(% _mstvisible="4" style="width: 54px;" %)(% _mstvisible="5" %)
407 (((
408 (% _mstvisible="6" %)
409 (% _msthash="1817492" _msttexthash="4459" _mstvisible="8" %)**1**
410 )))|=(% _mstvisible="4" style="width: 64px;" %)(% _mstvisible="5" %)
411 (((
412 (% _mstvisible="6" %)
413 (% _msthash="1817493" _msttexthash="4732" _mstvisible="8" %)**4**
414 )))
415 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:96px" %)(% _mstvisible="5" %)
416 (((
417 (% _mstvisible="6" %)
418 (% _msthash="1817494" _msttexthash="60203" _mstvisible="8" %)**Value**
419 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
420 (((
421 (% _mstvisible="6" %)
422 [[External temperature>>||anchor="H4.2SetExternalSensorMode" _msthash="1817495" _msttexthash="426517" _mstvisible="7"]]
423 )))|(% _mstvisible="4" style="width:99px" %)(% _mstvisible="5" %)
424 (((
425 (% _mstvisible="6" %)
426 (((
427 (% _mstvisible="7" %)
428 [[Built-In>>||anchor="H2.4.3Built-inTemperature" _msthash="2224745" _msttexthash="100464" _mstvisible="8"]]
429 )))
430
431 (% _mstvisible="6" %)
432 (((
433 (% _mstvisible="7" %)
434 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224746" _msttexthash="184041" _mstvisible="8"]]
435 )))
436 )))|(% _mstvisible="4" style="width:132px" %)(% _mstvisible="5" %)
437 (((
438 (% _mstvisible="6" %)
439 (((
440 (% _msthash="2224747" _msttexthash="136331" _mstvisible="7" %)
441 BAT Status &
442 )))
443
444 (% _mstvisible="6" %)
445 (((
446 (% _mstvisible="7" %)
447 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224748" _msttexthash="311181" _mstvisible="8"]]
448 )))
449 )))|(% _mstvisible="4" style="width:54px" %)(% _mstvisible="5" %)
450 (((
451 (% _msthash="1817496" _msttexthash="147225" _mstvisible="6" %)
452 Status & Ext
453 )))|(% _mstvisible="4" style="width:64px" %)(% _mstvisible="5" %)
454 (((
455 (% _mstvisible="6" %)
456 (((
457 (% _mstvisible="7" %)
458 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2224749" _msttexthash="227175" _mstvisible="8"]]
459 )))
460 )))
461
462 (% _mstvisible="1" %)
463 * (% _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**
464
465 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:469px" %)
466 (% _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]
467 (% _mstvisible="3" %)|(% _msthash="1230921" _msttexthash="60203" _mstvisible="4" style="width:65px" %)Value|(% _mstvisible="4" style="width:267px" %)(% _mstvisible="5" %)
468 (((
469 (% _msthash="1817497" _msttexthash="128427" _mstvisible="6" %)
470 BAT Status
471
472 (% _msthash="1817498" _msttexthash="472784" _mstvisible="6" %)
473 00(b): Ultra Low ( BAT <= 2.50v)
474
475 (% _msthash="1817499" _msttexthash="483678" _mstvisible="6" %)
476 01(b): Low  (2.50v <=BAT <= 2.55v)
477
478 (% _msthash="1817500" _msttexthash="440791" _mstvisible="6" %)
479 10(b): OK   (2.55v <= BAT <=2.65v)
480
481 (% _msthash="1817501" _msttexthash="334191" _mstvisible="6" %)
482 11(b): Good   (BAT >= 2.65v)
483 )))|(% _mstvisible="4" style="width:134px" %)(% _mstvisible="5" %)
484 (((
485 (% _mstvisible="6" %)
486 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="1817502" _msttexthash="311181" _mstvisible="7"]]
487
488 (% _mstvisible="6" %)
489
490 )))
491
492 * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
493
494 (% border="1" cellspacing="8" style="background-color:#ffffcc; color:green; width:520px" %)
495 |(% style="width:60px" %)**Bits**|(% style="width:90px" %)**7**|(% style="width:100px" %)**6**|(% style="width:90px" %)**5**|(% style="width:100px" %)**4**|(% style="width:60px" %)**[3:0]**
496 |(% style="width:96px" %)**Status&Ext**|(% style="width:124px" %)None-ACK Flag|(% style="width:146px" %)Poll Message FLAG|(% style="width:109px" %)Sync time OK|(% style="width:143px" %)Unix Time Request|(% style="width:106px" %)Ext: 0b(1001)
497
498 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
499 * (% style="color:blue" %)**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.
500 * (% style="color:blue" %)**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)
501
502
503
504
505 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
506
507
508 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
509
510 be used to power the external ADC sensor; user can control the power on time for this
511
512 sensor by setting:
513
514 AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)**Time to power this sensor, from 0 ~~ 65535ms**
515
516 For example:
517
518 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
519
520
521 Or use **downlink command A2** to set the same.
522
523 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
524
525 When the measured output voltage of the sensor is not within the range of 0.1V and 1.1V, the output voltage terminal of the sensor shall be divided The example in the following figure is to reduce the output voltage of the sensor by three times If it is necessary to reduce more times, calculate according to the formula in the figure and connect the corresponding resistance in series.
526
527 [[image:image-20220628150112-1.png||height="241" width="285"]]
528
529
530 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
531
532 [[image:image-20220628150714-4.png]]
533
534
535 When the voltage collected by ADC_IN1 is less than the minimum range, the minimum range will be used as the output; Similarly, when the collected voltage is greater than the maximum range, the maximum range will be used as the output.
536
537
538 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
539
540 [[image:image-20220628151005-5.png]]
541
542
543 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
544
545 [[image:image-20220628151056-6.png]]
546
547
548 3) Within range
549
550 [[image:image-20220628151143-7.png]]
551
552
553
554 ==== 2.4.6.4 Ext~=2 TMP117 Sensor （Since Firmware v1.3） ====
555
556
557 [[image:image-20220927095645-1.png||height="534" width="460"]]
558
559
560 **Ext=2,Temperature Sensor(TMP117)：**
561
562 [[image:image-20220906102307-7.png]]
563
564
565 (% style="color:blue" %)**Interrupt Mode and Counting Mode:**
566
567 The external cable NE2 can be use for MOD4 and MOD8
568
569
570
571
572 ==== 2.4.6.5 Ext~=4 Interrupt Mode （Since Firmware v1.3） ====
573
574
575 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will send an uplink when there is a trigger.**
576
577
578 (% style="color:blue" %)**Interrupt Mode can be used to connect to external interrupt sensors such as:**
579
580 **Case 1: Door Sensor.** 3.3v Out for such sensor is just to detect Open/Close.
581
582 In Open State, the power consumption is the same as if there is no probe
583
584 In Close state, the power consumption will be 3uA higher than normal.
585
586 [[image:image-20220906100852-1.png||height="205" width="377"]]
587
588
589 Ext=4,Interrupt Sensor：
590
591 (% border="2" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:512px" %)
592 |(% style="width:117px" %)(((
593 AT+EXT=4,1
594 )))|(% style="width:371px" %)(((
595 Sent uplink packet in both rising and falling interrupt
596 )))
597 |(% style="width:117px" %)(((
598 AT+EXT=4,2
599 )))|(% style="width:371px" %)(((
600 Sent uplink packet only in falling interrupt
601 )))
602 |(% style="width:117px" %)(((
603 AT+EXT=4,3
604 )))|(% style="width:371px" %)(((
605 Sent uplink packet only in rising interrupt
606 )))
607
608 Trigger by falling edge:
609
610 [[image:image-20220906101145-2.png]]
611
612
613 Trigger by raising edge：
614
615 [[image:image-20220906101145-3.png]]
616
617
618
619
620 ==== 2.4.6.6 Ext~=8 Counting Mode（Since Firmware v1.3） ====
621
622
623 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will count for every interrupt and uplink periodically.**
624
625
626 (% style="color:blue" %)**Case 1**(%%):  Low power consumption Flow Sensor, such flow sensor has pulse output and the power consumption in uA level and can be powered by LHT65N.
627
628 [[image:image-20220906101320-4.png||height="366" width="698"]]
629
630
631 (% style="color:blue" %)**Case 2**(%%):  Normal Flow Sensor: Such flow sensor has higher power consumption and is not suitable to be powered by LHT65N. It is powered by external power and output <3.3v pulse
632
633 [[image:image-20220906101320-5.png||height="353" width="696"]]
634
635 Ext=8, Counting Sensor ( 4 bytes)：
636
637 (% border="2" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:381px" %)
638 |(% style="width:138px" %)(((
639 AT+EXT=8,0
640 )))|(% style="width:240px" %)(((
641 Count at falling interrupt
642 )))
643 |(% style="width:138px" %)(((
644 AT+EXT=8,1
645 )))|(% style="width:240px" %)(((
646 Count at rising interrupt
647 )))
648 |(% style="width:138px" %)(((
649 AT+SETCNT=60
650 )))|(% style="width:240px" %)(((
651 Sent current count to 60
652 )))
653
654 [[image:image-20220906101320-6.png]]
655
656
657 (% style="color:blue" %)**A2 downlink Command：**
658
659 A2 02:  Same as AT+EXT=2 (AT+EXT= second byte)
660
661 A2 06 01 F4:  Same as AT+EXT=6,500 (AT+EXT= second byte, third and fourth bytes)
662
663 A2 04 02:  Same as AT+EXT=4,2 (AT+EXT= second byte, third byte)
664
665 A2 08 01 00:  Same as AT+EXT=8,0 (AT+EXT= second byte, fourth byte)
666
667 A2 08 02 00 00 00 3C:  Same as AT+ SETCNT=60  (AT+ SETCNT = 4th byte and 5th byte and 6th byte and 7th byte)
668
669
670 (% style="color:blue" %)**Modified ATWOOD command for external sensor TMP117 or DS18B20 temperature alarm.**
671
672
673 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
674
675 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
676
677 0): Cancel
678
679 1): Threshold alarm
680
681 2): Fluctuation alarm
682
683
684 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
685
686 (% style="color:red" %)**Note: When the collection time is less than 60 seconds and always exceeds the set alarm threshold, the sending interval will not be the collection time, but will be sent every 60 seconds.**
687
688
689 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
690
691 1):  If Alarm Mode is set to 1: Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
692
693 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
694
695
696 2):  If Alarm Mode is set to 2: Parameter 3 is valid, which represents the difference between the currently collected temperature and the last uploaded temperature.
697
698 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
699
700 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
701
702
703 (% style="color:blue" %)** Downlink:**
704
705 0xA5 00 ~-~- AT+WMOD=0.
706
707 0xA5 01 0A 11 94 29 04 ~-~- AT+WMOD=1,10,45,105  (AT+WMOD = second byte, third byte, fourth and fifth bytes divided by 100, sixth and seventh bytes divided by 100 )
708
709 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
710
711 0xA5 FF ~-~- After the device receives it, upload the current alarm configuration (FPORT=8). Such as 01 0A 11 94 29 04 or 02 0A 02.
712
713
714
715
716 == 2.5 Show data on Datacake ==
717
718
719 (((
720 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:
721 )))
722
723 (((
724
725 )))
726
727 (((
728 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
729 )))
730
731 (((
732 (% 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.
733 )))
734
735 (((
736
737 )))
738
739 (((
740 Add Datacake:
741 )))
742
743
744 [[image:image-20220523000825-7.png||_mstalt="429884" _mstvisible="3" height="262" width="583"]]
745
746
747
748 Select default key as Access Key:
749
750
751 [[image:image-20220523000825-8.png||_mstalt="430248" _mstvisible="3" height="453" width="406"]]
752
753
754 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/||_mstvisible="2"]]) , add LHT65 device.
755
756
757 [[image:image-20220523000825-9.png||_mstalt="430612" _mstvisible="3" height="366" width="392"]]
758
759
760 [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
761
762
763
764 == 2.6 Datalog Feature ==
765
766
767 (((
768 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.
769 )))
770
771
772
773 === 2.6.1 Ways to get datalog via LoRaWAN ===
774
775
776 There are two methods:
777
778 1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specifying time range.
779 1. Set [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]], LHT65N will wait for ACK for every uplink, when there is no LoRaWAN network, LHT65N will mark these records with non-ack message and store the sensor data, and it will send all messages (10s interval) after the network recovery. note: a) LHT65N will do ack check for data records sending to make sure every data arrive server. b) LHT65N will send data in CONFIRMED Mode when PNACKMD=1, but it won't re-transmit the same packet , it will just mark it as NONE-ACK and resend after network is detected.
780
781 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
782
783
784 [[image:image-20220703111700-2.png||height="381" width="1119"]]
785
786
787 === 2.6.2 Unix TimeStamp ===
788
789
790 LHT65N uses Unix TimeStamp format based on
791
792
793 [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
794
795
796
797 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
798
799 Below is the converter example
800
801 [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
802
803 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
804
805
806
807 === 2.6.3 Set Device Time ===
808
809
810 (((
811 There are two ways to set device's time:
812 )))
813
814 (((
815 **~1. Through LoRaWAN MAC Command (Default settings)**
816 )))
817
818 (((
819 User need to set SYNCMOD=1 to enable sync time via MAC command.
820 )))
821
822 (((
823 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).
824 )))
825
826 (((
827 (% 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.**
828 )))
829
830 (((
831
832 )))
833
834 (((
835 **2. Manually Set Time**
836 )))
837
838 (((
839 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
840 )))
841
842
843
844 === 2.6.4 Poll sensor value ===
845
846
847 User can poll sensor value based on timestamps from the server. Below is the downlink command.
848
849 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
850
851
852 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.
853
854 For example, downlink command **31 5FC5F350 5FC6 0160 05**
855
856 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
857
858 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
859
860
861
862 === 2.6.5 Datalog Uplink payload ===
863
864
865 (% _msthash="315267" _msttexthash="2245087" _mstvisible="1" %)
866 The Datalog poll reply uplink will use below payload format.
867
868 (% _mstvisible="1" %)
869 (((
870 (% _mstvisible="2" %)
871
872
873 (% _mstvisible="2" %)
874 (% _msthash="506080" _msttexthash="451581" _mstvisible="4" %)**Retrieval data payload**
875 )))
876
877 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
878 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 93px;" %)(% _mstvisible="5" %)
879 (((
880 (% _mstvisible="6" %)
881 (((
882 (% _mstvisible="7" %)
883 (% _msthash="2224750" _msttexthash="161122" _mstvisible="9" %)**Size(bytes)**
884 )))
885 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
886 (((
887 (% _mstvisible="6" %)
888 (((
889 (% _mstvisible="7" %)
890 (% _msthash="2224751" _msttexthash="4550" _mstvisible="9" %)**2**
891 )))
892 )))|=(% _mstvisible="4" style="width: 102px;" %)(% _mstvisible="5" %)
893 (((
894 (% _mstvisible="6" %)
895 (((
896 (% _mstvisible="7" %)
897 (% _msthash="2224752" _msttexthash="4550" _mstvisible="9" %)**2**
898 )))
899 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
900 (((
901 (% _mstvisible="6" %)
902 (((
903 (% _mstvisible="7" %)
904 (% _msthash="2224753" _msttexthash="4550" _mstvisible="9" %)**2**
905 )))
906 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
907 (((
908 (% _mstvisible="6" %)
909 (((
910 (% _mstvisible="7" %)
911 (% _msthash="2224754" _msttexthash="4459" _mstvisible="9" %)**1**
912 )))
913 )))|=(% _mstvisible="4" style="width: 48px;" %)(% _mstvisible="5" %)
914 (((
915 (% _mstvisible="6" %)
916 (((
917 (% _mstvisible="7" %)
918 (% _msthash="2224755" _msttexthash="4732" _mstvisible="9" %)**4**
919 )))
920 )))
921 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:93px" %)(% _mstvisible="5" %)
922 (((
923 (% _mstvisible="6" %)
924 (((
925 (% _mstvisible="7" %)
926 (% _msthash="2224756" _msttexthash="60203" _mstvisible="9" %)**Value**
927 )))
928 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
929 (((
930 (% _mstvisible="6" %)
931 (((
932 (% _mstvisible="7" %)
933 [[External sensor data>>||anchor="H2.4.6Extvalue" _msthash="2224757" _msttexthash="386672" _mstvisible="8"]]
934 )))
935 )))|(% _mstvisible="4" style="width:102px" %)(% _mstvisible="5" %)
936 (((
937 (% _mstvisible="6" %)
938 (((
939 (% _mstvisible="7" %)
940 (((
941 (% _mstvisible="8" %)
942 [[Built In>>||anchor="H2.4.3Built-inTemperature" _msthash="2671864" _msttexthash="91065" _mstvisible="9"]]
943 )))
944 )))
945
946 (% _mstvisible="6" %)
947 (((
948 (% _mstvisible="7" %)
949 (((
950 (% _mstvisible="8" %)
951 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2671865" _msttexthash="184041" _mstvisible="9"]]
952 )))
953 )))
954 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
955 (((
956 (% _mstvisible="6" %)
957 (((
958 (% _mstvisible="7" %)
959 (((
960 (% _mstvisible="8" %)
961 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2671866" _msttexthash="105872" _mstvisible="9"]]
962 )))
963 )))
964
965 (% _mstvisible="6" %)
966 (((
967 (% _mstvisible="7" %)
968 (((
969 (% _mstvisible="8" %)
970 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2671867" _msttexthash="117429" _mstvisible="9"]]
971 )))
972 )))
973 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
974 (((
975 (% _mstvisible="6" %)
976 (((
977 (% _msthash="2224758" _msttexthash="390390" _mstvisible="7" %)
978 Poll message flag & Ext
979 )))
980 )))|(% _mstvisible="4" style="width:48px" %)(% _mstvisible="5" %)
981 (((
982 (% _mstvisible="6" %)
983 (((
984 (% _mstvisible="7" %)
985 (((
986 (% _mstvisible="8" %)
987 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2671868" _msttexthash="227175" _mstvisible="9"]]
988 )))
989 )))
990
991 (% _mstvisible="6" %)
992 (((
993 (% _mstvisible="7" %)
994 (((
995 (% _mstvisible="8" %)
996
997 )))
998 )))
999 )))
1000
1001 (% _mstvisible="1" %)
1002 (% _msthash="315268" _msttexthash="390390" _mstvisible="3" %)**Poll message flag & Ext**
1003
1004 (% _mstvisible="1" %)
1005 [[image:image-20220523152208-14.png||_mstalt="452920" _mstvisible="3"]]
1006
1007 (% _mstvisible="1" %)
1008 (((
1009 (% _mstvisible="2" %)
1010 (((
1011 (% _msthash="736723" _msttexthash="2005003" _mstvisible="3" %)
1012 (((
1013 Poll Message Flag: 1: This message is a poll message reply.
1014 )))
1015 )))
1016 )))
1017
1018 (% _mstvisible="1" %)
1019 * (% _mstvisible="3" %)
1020 (((
1021 (% _mstvisible="4" %)
1022 (((
1023 (% _msthash="1197157" _msttexthash="561548" _mstvisible="5" %)
1024 (((
1025 Poll Message Flag is set to 1.
1026 )))
1027 )))
1028 )))
1029 * (% _mstvisible="3" %)
1030 (((
1031 (% _mstvisible="4" %)
1032 (((
1033 (% _msthash="1197158" _msttexthash="9284964" _mstvisible="5" %)
1034 (((
1035 Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
1036 )))
1037 )))
1038 )))
1039
1040 (% _mstvisible="1" %)
1041 (((
1042 (% _mstvisible="2" %)
1043 (((
1044 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
1045 (((
1046
1047 )))
1048
1049 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
1050 (((
1051 For example, in US915 band, the max payload for different DR is:
1052 )))
1053 )))
1054 )))
1055
1056 (% _mstvisible="1" %)
1057 (((
1058 (% _mstvisible="2" %)
1059 (((
1060 (% _msthash="736725" _msttexthash="1065532" _mstvisible="3" %)
1061 (((
1062 a) DR0: max is 11 bytes so one entry of data
1063 )))
1064 )))
1065 )))
1066
1067 (% _mstvisible="1" %)
1068 (((
1069 (% _mstvisible="2" %)
1070 (((
1071 (% _msthash="736726" _msttexthash="3265665" _mstvisible="3" %)
1072 (((
1073 b) DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
1074 )))
1075 )))
1076 )))
1077
1078 (% _mstvisible="1" %)
1079 (((
1080 (% _mstvisible="2" %)
1081 (((
1082 (% _msthash="736727" _msttexthash="1454115" _mstvisible="3" style="text-align: left;" %)
1083 (((
1084 c) DR2: total payload includes 11 entries of data
1085 )))
1086 )))
1087 )))
1088
1089 (% _mstvisible="1" %)
1090 (((
1091 (% _mstvisible="2" %)
1092 (((
1093 (% _msthash="736728" _msttexthash="1483924" _mstvisible="3" style="text-align: left;" %)
1094 (((
1095 d) DR3: total payload includes 22 entries of data.
1096 )))
1097 )))
1098 )))
1099
1100 (% _mstvisible="1" %)
1101 (((
1102 (% _mstvisible="2" %)
1103 (((
1104 (% _msthash="736729" _msttexthash="5848349" _mstvisible="3" style="text-align: left;" %)
1105 (((
1106 If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0   
1107 )))
1108 )))
1109 )))
1110
1111
1112 (% _mstvisible="1" style="text-align: left;" %)
1113 (% _msthash="315269" _msttexthash="104767" _mstvisible="3" %)**Example:**
1114
1115 (% _msthash="315270" _msttexthash="913822" _mstvisible="1" style="text-align: left;" %)
1116 If LHT65N has below data inside Flash:
1117
1118 (% _mstvisible="1" %)
1119 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
1120
1121 (% _mstvisible="1" %)
1122 (((
1123 (% _msthash="506081" _msttexthash="1663961" _mstvisible="2" style="text-align: left;" %)
1124 If user sends below downlink command: (% _mstvisible="3" style="background-color:yellow" %)3160065F9760066DA705
1125 )))
1126
1127 (% _mstvisible="1" %)
1128 (((
1129 (% _msthash="506082" _msttexthash="1092494" _mstvisible="2" style="text-align: left;" %)
1130 Where : Start time: 60065F97 = time 21/1/19 04:27:03
1131 )))
1132
1133 (% _mstvisible="1" %)
1134 (((
1135 (% _msthash="506083" _msttexthash="737269" _mstvisible="2" style="text-align: left;" %)
1136 Stop time 60066DA7= time 21/1/19 05:27:(% _msthash="903005" _msttexthash="9672" _mstvisible="2" %)03
1137 )))
1138
1139 (% _mstvisible="1" %)
1140 (((
1141 (% _mstvisible="2" %)
1142
1143 )))
1144
1145 (% _mstvisible="1" %)
1146 (((
1147 (% _msthash="506084" _msttexthash="751218" _mstvisible="2" style="text-align: left;" %)
1148 LHT65N will uplink this payload.
1149 )))
1150
1151 (% _mstvisible="1" %)
1152 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
1153
1154
1155 (% _msthash="315271" _msttexthash="12012546" _mstvisible="1" style="text-align: left;" %)
1156 (((
1157 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
1158 )))
1159
1160 (% _msthash="315237" _msttexthash="1385839" %)
1161 (((
1162 Where the first 11 bytes is for the first entry:
1163 )))
1164
1165 (% _msthash="315238" _msttexthash="274846" %)
1166 (((
1167 7FFF089801464160065F97
1168 )))
1169
1170 (% _msthash="315239" _msttexthash="617435" %)
1171 (((
1172 Ext sensor data=0x7FFF/100=327.67
1173 )))
1174
1175 (% _msthash="315240" _msttexthash="270543" %)
1176 (((
1177 Temp=0x0898/100=22.00
1178 )))
1179
1180 (% _msthash="315241" _msttexthash="211783" %)
1181 (((
1182 Hum=0x0146/10=32.6
1183 )))
1184
1185 (% _msthash="315242" _msttexthash="1569776" %)
1186 (((
1187 poll message flag & Ext=0x41,means reply data,Ext=1
1188 )))
1189
1190 (% _msthash="315243" _msttexthash="1120509" %)
1191 (((
1192 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
1193 )))
1194
1195
1196
1197 == 2.7 Alarm Mode ==
1198
1199
1200 (((
1201 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.
1202 )))
1203
1204 (((
1205 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
1206
1207
1208 )))
1209
1210 (((
1211 **AT COMMAND FOR ALARM MODE:**
1212 )))
1213
1214 (% _mstvisible="1" class="box infomessage" %)
1215 (((
1216 (((
1217 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled)
1218 )))
1219
1220 (((
1221 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1222 )))
1223
1224 (((
1225 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1226 )))
1227
1228 (((
1229 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
1230 )))
1231
1232 (((
1233 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1234 )))
1235 )))
1236
1237 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1238
1239 Total bytes: 8 bytes
1240
1241 **Example:**AA0100010001003C
1242
1243 WMOD=01
1244
1245 CITEMP=0001
1246
1247 TEMPlow=0001
1248
1249 TEMPhigh=003C
1250
1251
1252
1253 == 2.8 LED Indicator ==
1254
1255
1256 The LHT65 has a triple color LED which for easy showing different stage .
1257
1258 While user press ACT button, the LED will work as per LED status with ACT button.
1259
1260 In a normal working state:
1261
1262 * For each uplink, the BLUE LED or RED LED will blink once.
1263 BLUE LED when external sensor is connected.
1264 * RED LED when external sensor is not connected
1265 * For each success downlink, the PURPLE LED will blink once
1266
1267
1268
1269
1270 == 2.9 installation ==
1271
1272
1273 (% _mstvisible="1" %)
1274 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
1275
1276
1277
1278 = 3. Sensors and Accessories =
1279
1280
1281 == 3.1 E2 Extension Cable ==
1282
1283
1284 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1285
1286
1287 **1m long breakout cable for LHT65N. Features:**
1288
1289 * (((
1290 Use for AT Command， works for both LHT52/LHT65N
1291 )))
1292 * (((
1293 Update firmware for LHT65N, works for both LHT52/LHT65N
1294 )))
1295 * (((
1296 Supports ADC mode to monitor external ADC
1297 )))
1298 * (((
1299 Supports Interrupt mode
1300 )))
1301 * (((
1302 Exposed All pins from the LHT65N Type-C connector.
1303
1304
1305
1306 )))
1307
1308 [[image:image-20220619092421-3.png||height="371" width="529"]]
1309
1310
1311
1312
1313 == 3.2 E3 Temperature Probe ==
1314
1315
1316 [[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"]]
1317
1318
1319 Temperature sensor with 2 meters cable long
1320
1321 * Resolution: 0.0625 °C
1322 * ±0.5°C accuracy from -10°C to +85°C
1323 * ±2°C accuracy from -55°C to +125°C
1324 * Operating Range: -40 ~~ 125 °C
1325 * Working voltage 2.35v ~~ 5v
1326
1327
1328
1329
1330 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1331
1332
1333 (((
1334 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1335 )))
1336
1337 * (((
1338 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1339 )))
1340
1341 * (((
1342 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1343 )))
1344
1345 (((
1346 There are two kinds of commands to configure LHT65N, they are:
1347 )))
1348
1349 * (((
1350 (% style="color:#4f81bd" %)**General Commands**.
1351 )))
1352
1353 (((
1354 These commands are to configure:
1355 )))
1356
1357 1. (((
1358 General system settings like: uplink interval.
1359 )))
1360 1. (((
1361 LoRaWAN protocol & radio-related commands.
1362 )))
1363
1364 (((
1365 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]]
1366 )))
1367
1368 * (((
1369 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1370 )))
1371
1372 (((
1373 These commands are only valid for LHT65N, as below:
1374 )))
1375
1376
1377
1378 == 4.1 Set Transmit Interval Time ==
1379
1380
1381 Feature: Change LoRaWAN End Node Transmit Interval.
1382
1383
1384 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1385
1386 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
1387
1388
1389 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1390
1391 Format: Command Code (0x01) followed by 3 bytes time value.
1392
1393 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1394
1395 * **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1396
1397 * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1398
1399
1400
1401
1402 == 4.2 Set External Sensor Mode ==
1403
1404
1405 Feature: Change External Sensor Mode.
1406
1407
1408 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1409
1410 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1411
1412
1413 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1414
1415 Total bytes: 2 ~~ 5 bytes
1416
1417 **Example:**
1418
1419 * 0xA201: Set external sensor type to E1
1420
1421 * 0xA209: Same as AT+EXT=9
1422
1423 * 0xA20702003c: Same as AT+SETCNT=60
1424
1425
1426
1427
1428 == 4.3 Enable/Disable uplink Temperature probe ID ==
1429
1430
1431 (((
1432 Feature: If PID is enabled, device will send the temperature probe ID on:
1433 )))
1434
1435 * (((
1436 First Packet after OTAA Join
1437 )))
1438 * (((
1439 Every 24 hours since the first packet.
1440 )))
1441
1442 (((
1443 PID is default set to disable (0)
1444
1445
1446 )))
1447
1448 (% style="color:#4f81bd" %)**AT Command:**
1449
1450 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1451
1452
1453 (% style="color:#4f81bd" %)**Downlink Command:**
1454
1455 * **0xA800**  **~-~->** AT+PID=0
1456 * **0xA801**     **~-~->** AT+PID=1
1457
1458
1459
1460
1461 == 4.4 Set Password ==
1462
1463
1464 Feature: Set device password, max 9 digits
1465
1466
1467 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1468
1469 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1470
1471
1472 (% style="color:#4f81bd" %)**Downlink Command:**
1473
1474 No downlink command for this feature.
1475
1476
1477
1478 == 4.5 Quit AT Command ==
1479
1480
1481 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1482
1483
1484 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1485
1486 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1487
1488
1489 (% style="color:#4f81bd" %)**Downlink Command:**
1490
1491 No downlink command for this feature.
1492
1493
1494
1495 == 4.6 Set to sleep mode ==
1496
1497
1498 Feature: Set device to sleep mode
1499
1500 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1501 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1502
1503 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1504
1505 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1506
1507
1508 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1509
1510 * There is no downlink command to set to Sleep mode.
1511
1512
1513
1514
1515 == 4.7 Set system time ==
1516
1517
1518 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1519
1520
1521 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1522
1523 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1524
1525
1526 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1527
1528 0x306007806000  ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1529
1530
1531
1532 == 4.8 Set Time Sync Mode ==
1533
1534
1535 (((
1536 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1537 )))
1538
1539 (((
1540 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.
1541
1542
1543 )))
1544
1545 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1546
1547 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1548
1549
1550 (% style="color:#4f81bd" %)**Downlink Command:**
1551
1552 0x28 01  ~/~/  Same As AT+SYNCMOD=1
1553 0x28 00  ~/~/  Same As AT+SYNCMOD=0
1554
1555
1556
1557 == 4.9 Set Time Sync Interval ==
1558
1559
1560 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1561
1562
1563 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1564
1565 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1566
1567
1568 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1569
1570 **0x29 0A** ~/~/ Same as AT+SYNCTDC=0x0A
1571
1572
1573
1574 == 4.10 Print data entries base on page. ==
1575
1576
1577 Feature: Print the sector data from start page to stop page (max is 416 pages).
1578
1579
1580 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1581
1582 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1583
1584
1585 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1586
1587 No downlink commands for feature
1588
1589
1590
1591 == 4.11 Print last few data entries. ==
1592
1593
1594 Feature: Print the last few data entries
1595
1596
1597 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1598
1599 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1600
1601
1602 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1603
1604 No downlink commands for feature
1605
1606
1607
1608 == 4.12 Clear Flash Record ==
1609
1610
1611 Feature: Clear flash storage for data log feature.
1612
1613
1614 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1615
1616 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1617
1618
1619 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1620
1621 * Example: 0xA301 ~/~/Same as AT+CLRDTA
1622
1623
1624
1625
1626 == 4.13 Auto Send None-ACK messages ==
1627
1628
1629 (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
1630 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.
1631
1632
1633 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1634
1635 (% _msthash="315396" _msttexthash="734682" _mstvisible="1" %)
1636 The default factory setting is 0
1637
1638 (% _mstvisible="1" border="1" style="background-color:#ffffcc; color:green; width:450px" %)
1639 (% _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**
1640 (% _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
1641
1642 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1643
1644 * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1645
1646
1647
1648
1649 = 5. Battery & How to replace =
1650
1651
1652 == 5.1 Battery Type ==
1653
1654
1655 (((
1656 (((
1657 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.
1658 )))
1659 )))
1660
1661 (((
1662
1663 )))
1664
1665 (((
1666 (((
1667 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1668 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1669 )))
1670 )))
1671
1672 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1673
1674
1675
1676 == 5.2 Replace Battery ==
1677
1678
1679 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.
1680
1681 [[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"]]
1682
1683
1684 == 5.3 Battery Life Analyze ==
1685
1686
1687 (((
1688 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:
1689 [[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]]
1690 )))
1691
1692 (((
1693
1694 )))
1695
1696 (((
1697 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]]
1698 )))
1699
1700
1701
1702 = 6. FAQ =
1703
1704
1705 == 6.1 How to use AT Command? ==
1706
1707
1708 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.
1709
1710 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1711
1712
1713 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1714
1715 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1716 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1717 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1718 * (% style="background-color:yellow" %)**USB to TTL 3.3V <~-~-> D-**
1719
1720 (((
1721 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.
1722 )))
1723
1724
1725 Input password and ATZ to activate LHT65N,As shown below:
1726
1727 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1728
1729
1730 (% _msthash="506066" _msttexthash="544869" %)
1731 AT Command List is as below:
1732
1733 (% _msthash="506067" _msttexthash="361920" %)
1734 AT+<CMD>? :  Help on <CMD>
1735
1736 (% _msthash="506068" _msttexthash="243061" %)
1737 AT+<CMD> :  Run <CMD>
1738
1739 (% _msthash="506069" _msttexthash="704197" %)
1740 AT+<CMD>=<value> :  Set the value
1741
1742 (% _msthash="506070" _msttexthash="455676" %)
1743 AT+<CMD>=? :  Get the value
1744
1745 (% _msthash="506071" _msttexthash="670553" %)
1746 AT+DEBUG:  Set more info output
1747
1748 (% _msthash="506072" _msttexthash="485888" %)
1749 ATZ:  Trig a reset of the MCU
1750
1751 (% _msthash="506073" _msttexthash="2068872" %)
1752 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1753
1754 (% _msthash="506074" _msttexthash="689169" %)
1755 AT+DEUI:  Get or Set the Device EUI
1756
1757 (% _msthash="506075" _msttexthash="960414" %)
1758 AT+DADDR:  Get or Set the Device Address
1759
1760 (% _msthash="506076" _msttexthash="1079897" %)
1761 AT+APPKEY:  Get or Set the Application Key
1762
1763 (% _msthash="506077" _msttexthash="1326143" %)
1764 AT+NWKSKEY:  Get or Set the Network Session Key
1765
1766 (% _msthash="506078" _msttexthash="1573000" %)
1767 AT+APPSKEY:  Get or Set the Application Session Key
1768
1769 (% _msthash="506079" _msttexthash="1041729" %)
1770 AT+APPEUI:  Get or Set the Application EUI
1771
1772 (% _msthash="506080" _msttexthash="2104206" %)
1773 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1774
1775 (% _msthash="506081" _msttexthash="3369288" %)
1776 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1777
1778 (% _msthash="506082" _msttexthash="1894529" %)
1779 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1780
1781 (% _msthash="506083" _msttexthash="3864172" %)
1782 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1783
1784 (% _msthash="506084" _msttexthash="1712204" %)
1785 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1786
1787 (% _msthash="506085" _msttexthash="1281202" %)
1788 AT+RX2FQ:  Get or Set the Rx2 window frequency
1789
1790 (% _msthash="506086" _msttexthash="2796781" %)
1791 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1792
1793 (% _msthash="506087" _msttexthash="3285165" %)
1794 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1795
1796 (% _msthash="506088" _msttexthash="3286179" %)
1797 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1798
1799 (% _msthash="506089" _msttexthash="4703803" %)
1800 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1801
1802 (% _msthash="506090" _msttexthash="4704999" %)
1803 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1804
1805 (% _msthash="506091" _msttexthash="1528683" %)
1806 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1807
1808 (% _msthash="506092" _msttexthash="757185" %)
1809 AT+NWKID:  Get or Set the Network ID
1810
1811 (% _msthash="506093" _msttexthash="1156597" %)
1812 AT+FCU:  Get or Set the Frame Counter Uplink
1813
1814 (% _msthash="506094" _msttexthash="1273987" %)
1815 AT+FCD:  Get or Set the Frame Counter Downlink
1816
1817 (% _msthash="506095" _msttexthash="859222" %)
1818 AT+CLASS:  Get or Set the Device Class
1819
1820 (% _msthash="506096" _msttexthash="384852" %)
1821 AT+JOIN:  Join network
1822
1823 (% _msthash="506097" _msttexthash="548626" %)
1824 AT+NJS:  Get the join status
1825
1826 (% _msthash="506098" _msttexthash="2546206" %)
1827 AT+SENDB:  Send hexadecimal data along with the application port
1828
1829 (% _msthash="506099" _msttexthash="1932307" %)
1830 AT+SEND:  Send text data along with the application port
1831
1832 (% _msthash="506100" _msttexthash="3560557" %)
1833 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1834
1835 (% _msthash="506101" _msttexthash="1429701" %)
1836 AT+RECV:  Print last received data in raw format
1837
1838 (% _msthash="506102" _msttexthash="1735981" %)
1839 AT+VER:  Get current image version and Frequency Band
1840
1841 (% _msthash="506103" _msttexthash="1189474" %)
1842 AT+CFM:  Get or Set the confirmation mode (0-1)
1843
1844 (% _msthash="506104" _msttexthash="1718210" %)
1845 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1846
1847 (% _msthash="506105" _msttexthash="1339403" %)
1848 AT+SNR:  Get the SNR of the last received packet
1849
1850 (% _msthash="506106" _msttexthash="1452009" %)
1851 AT+RSSI:  Get the RSSI of the last received packet
1852
1853 (% _msthash="506107" _msttexthash="2768142" %)
1854 AT+TDC:  Get or set the application data transmission interval in ms
1855
1856 (% _msthash="506108" _msttexthash="1083914" %)
1857 AT+PORT:  Get or set the application port
1858
1859 (% _msthash="506109" _msttexthash="622440" %)
1860 AT+DISAT:  Disable AT commands
1861
1862 (% _msthash="506110" _msttexthash="868361" %)
1863 AT+PWORD: Set password, max 9 digits
1864
1865 (% _msthash="506111" _msttexthash="2210299" %)
1866 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1867
1868 (% _msthash="506112" _msttexthash="2113462" %)
1869 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1870
1871 (% _msthash="506113" _msttexthash="2087423" %)
1872 AT+PDTA:  Print the sector data from start page to stop page
1873
1874 (% _msthash="506114" _msttexthash="1063127" %)
1875 AT+PLDTA:  Print the last few sets of data
1876
1877 (% _msthash="506115" _msttexthash="1999426" %)
1878 AT+CLRDTA:  Clear the storage, record position back to 1st
1879
1880 (% _msthash="506116" _msttexthash="442130" %)
1881 AT+SLEEP:  Set sleep mode
1882
1883 (% _msthash="506117" _msttexthash="1080222" %)
1884 AT+EXT:  Get or Set external sensor model
1885
1886 (% _msthash="506118" _msttexthash="1309490" %)
1887 AT+BAT:  Get the current battery voltage in mV
1888
1889 (% _msthash="506119" _msttexthash="813891" %)
1890 AT+CFG:  Print all configurations
1891
1892 (% _msthash="506120" _msttexthash="551707" %)
1893 AT+WMOD:  Get or Set Work Mode
1894
1895 (% _msthash="506121" _msttexthash="2631499" %)
1896 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1897
1898 (% _msthash="506122" _msttexthash="3907150" %)
1899 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1900
1901 (% _msthash="506123" _msttexthash="854620" %)
1902 AT+SETCNT:  Set the count at present
1903
1904 (% _msthash="506124" _msttexthash="2554877" %)
1905 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1906
1907 (% _msthash="506125" _msttexthash="771849" %)
1908 AT+RPL:  Get or set response level
1909
1910 (% _msthash="506126" _msttexthash="1484314" %)
1911 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1912
1913 (% _msthash="506127" _msttexthash="741728" %)
1914 AT+LEAPSEC:  Get or Set Leap Second
1915
1916 (% _msthash="506128" _msttexthash="1694017" %)
1917 AT+SYNCMOD:  Get or Set time synchronization method
1918
1919 (% _msthash="506129" _msttexthash="2235948" %)
1920 AT+SYNCTDC:  Get or set time synchronization interval in day
1921
1922 (% _msthash="506130" _msttexthash="425542" %)
1923 AT+PID:  Get or set the PID
1924
1925
1926
1927 == 6.2 Where to use AT commands and Downlink commands ==
1928
1929
1930 **AT commands：**
1931
1932 [[image:image-20220620153708-1.png||height="603" width="723"]]
1933
1934
1935 **Downlink commands:**
1936
1937
1938
1939 (% style="color:blue" %)**TTN:**
1940
1941 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1942
1943
1944
1945 (% style="color:blue" %)**Helium：**
1946
1947 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1948
1949
1950
1951 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1952
1953
1954 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1955
1956
1957 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1958
1959
1960
1961 (% style="color:blue" %)**Aws:**
1962
1963 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1964
1965
1966
1967 == 6.3 How to change the uplink interval？ ==
1968
1969
1970 Please see this link: [[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" style="background-color: rgb(255, 255, 255);"]]
1971
1972
1973
1974 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1975
1976
1977 [[image:image-20220615153355-1.png]]
1978
1979 [[image:1655802313617-381.png]]
1980
1981
1982 (((
1983 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.
1984 )))
1985
1986
1987 Input password and ATZ to activate LHT65N,As shown below:
1988
1989 [[image:image-20220615154519-3.png||height="672" width="807"]]
1990
1991
1992
1993 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1994
1995
1996 [[image:image-20220615153355-1.png]]
1997
1998
1999 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
2000
2001 [[image:image-20220615170542-5.png]]
2002
2003
2004
2005 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
2006
2007 (% _msthash="506146" _msttexthash="52173160" %)
2008 First connect the four lines；(% style="display:none" %)
2009
2010 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
2011
2012
2013 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
2014
2015 [[image:image-20220621170938-2.png]]
2016
2017
2018
2019 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
2020
2021 [[image:image-20220615171334-6.png]]
2022
2023
2024 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
2025
2026
2027 When this interface appears, it indicates that the download has been completed.
2028
2029 [[image:image-20220620160723-8.png]]
2030
2031
2032 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
2033
2034
2035
2036 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
2037
2038
2039 [[image:image-20220623110706-1.png]]
2040
2041
2042 [[image:image-20220623112117-4.png||height="459" width="343"]]
2043
2044
2045 (((
2046 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.
2047 )))
2048
2049
2050 Input password and ATZ to activate LHT65N,As shown below:
2051
2052 [[image:image-20220615154519-3.png||height="672" width="807"]]
2053
2054
2055
2056 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
2057
2058
2059 [[image:image-20220623110706-1.png]]
2060
2061
2062 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
2063
2064 [[image:image-20220615170542-5.png]]
2065
2066
2067
2068 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
2069
2070 (% _msthash="506146" _msttexthash="52173160" %)
2071 First connect the four lines；
2072
2073 (% _msthash="506146" _msttexthash="52173160" %)
2074 [[image:image-20220623113959-5.png||height="528" width="397"]]
2075
2076 (% _msthash="506146" _msttexthash="52173160" %)
2077 Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
2078
2079
2080
2081 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
2082
2083 [[image:image-20220615171334-6.png]]
2084
2085
2086 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
2087
2088
2089 When this interface appears, it indicates that the download has been completed.
2090
2091 [[image:image-20220620160723-8.png]]
2092
2093
2094 Finally,restart reset device again
2095
2096
2097
2098 = 7. Order Info =
2099
2100
2101 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
2102
2103 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
2104
2105 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
2106 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
2107 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
2108 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
2109 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
2110 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
2111 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
2112 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
2113
2114 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
2115
2116 * (% style="color:red" %)**E3**(%%): External Temperature Probe
2117
2118
2119
2120
2121 = 8. Packing Info =
2122
2123
2124 **Package Includes**:
2125
2126 * LHT65N Temperature & Humidity Sensor x 1
2127 * Optional external sensor
2128
2129 **Dimension and weight**:
2130
2131 * Device Size:  10 x 10 x 3.5 cm
2132 * Device Weight: 120.5g
2133
2134
2135
2136
2137 = 9. Reference material =
2138
2139
2140 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
2141
2142
2143
2144
2145 = 10. FCC Warning =
2146
2147
2148 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
2149
2150 (1) This device may not cause harmful interference；
2151
2152 (2) this device must accept any interference received, including interference that may cause undesired operation.
2153
2154
2155