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Version 201.1 by Bei Jinggeng on 2022/09/27 13:34
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9 (% _msthash="315238" _msttexthash="18964465" _mstvisible="3" %)**Table of Contents：**
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11 {{toc/}}
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15
16
17 = 1. Introduction =
18
19
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 == 1.3 Specification ==
66
67
68 (% style="color:#037691" %)**Built-in Temperature Sensor:**
69
70 * Resolution: 0.01 °C
71 * Accuracy Tolerance : Typ ±0.3 °C
72 * Long Term Drift: < 0.02 °C/yr
73 * Operating Range: -40 ~~ 85 °C
74
75 (% style="color:#037691" %)**Built-in Humidity Sensor:**
76
77 * Resolution: 0.04 %RH
78 * Accuracy Tolerance : Typ ±3 %RH
79 * Long Term Drift: < 0.02 °C/yr
80 * Operating Range: 0 ~~ 96 %RH
81
82 (% style="color:#037691" %)**External Temperature Sensor:**
83
84 * Resolution: 0.0625 °C
85 * ±0.5°C accuracy from -10°C to +85°C
86 * ±2°C accuracy from -55°C to +125°C
87 * Operating Range: -55 °C ~~ 125 °C
88
89
90 = 2. Connect LHT65N to IoT Server =
91
92
93 == 2.1 How does LHT65N work? ==
94
95
96 (((
97 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.
98 )))
99
100 (((
101 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.
102 )))
103
104
105
106 == 2.2 How to Activate LHT65N? ==
107
108
109 (((
110 The LHT65N has two working modes:
111 )))
112
113 * (((
114 (% 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.
115 )))
116 * (((
117 (% 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. 
118 )))
119
120 (((
121 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
122 )))
123
124
125 [[image:image-20220515123819-1.png||_mstalt="430742" _mstvisible="3" height="379" width="317"]]
126
127 [[image:image-20220525110604-2.png||_mstalt="427531" _mstvisible="3"]]
128
129
130
131 == 2.3 Example to join LoRaWAN network ==
132
133
134 (% _msthash="315240" _msttexthash="9205482" _mstvisible="1" class="wikigeneratedid" %)
135 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.
136
137 (% _mstvisible="1" class="wikigeneratedid" %)
138 [[image:image-20220522232442-1.png||_mstalt="427830" _mstvisible="3" height="387" width="648"]]
139
140
141 (((
142 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:
143 )))
144
145
146
147 === 2.3.1 Step 1: Create Device n TTN ===
148
149
150 (((
151 Create a device in TTN V3 with the OTAA keys from LHT65N.
152 )))
153
154 (((
155 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
156 )))
157
158 [[image:image-20220617150003-1.jpeg]]
159
160 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
161
162 Add APP EUI in the application.
163
164
165 [[image:image-20220522232916-3.png||_mstalt="430495" _mstvisible="3"]]
166
167
168 [[image:image-20220522232932-4.png||_mstalt="430157" _mstvisible="3"]]
169
170
171 [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
172
173
174
175 (% style="color:red" %)**Note: LHT65N use same payload as LHT65.**
176
177
178 [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
179
180
181 Input APP EUI,  APP KEY and DEV EUI:
182
183
184 [[image:image-20220522233118-7.png||_mstalt="430430" _mstvisible="3"]]
185
186
187
188
189 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
190
191
192 (((
193 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.
194 )))
195
196 [[image:image-20220522233300-8.png||_mstalt="428389" _mstvisible="3" height="219" width="722"]]
197
198
199
200
201 == 2.4 Uplink Payload ==
202
203
204 (((
205 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.
206 )))
207
208 (((
209 After each uplink, the (% _mstvisible="3" style="color:blue" %)**BLUE LED**(%%) will blink once.
210 )))
211
212 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:426px" %)
213 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 97px;" %)(% _mstvisible="5" %)
214 (((
215 (% _mstvisible="6" %)
216 (% _msthash="1817478" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
217 )))|=(% _mstvisible="4" style="width: 39px;" %)(% _mstvisible="5" %)
218 (((
219 (% _mstvisible="6" %)
220 (% _msthash="1817479" _msttexthash="4550" _mstvisible="8" %)**2**
221 )))|=(% _mstvisible="4" style="width: 100px;" %)(% _mstvisible="5" %)
222 (((
223 (% _mstvisible="6" %)
224 (% _msthash="1817480" _msttexthash="4550" _mstvisible="8" %)**2**
225 )))|=(% _mstvisible="4" style="width: 77px;" %)(% _mstvisible="5" %)
226 (((
227 (% _mstvisible="6" %)
228 (% _msthash="1817481" _msttexthash="4550" _mstvisible="8" %)**2**
229 )))|=(% _mstvisible="4" style="width: 47px;" %)(% _mstvisible="5" %)
230 (((
231 (% _mstvisible="6" %)
232 (% _msthash="1817482" _msttexthash="4459" _mstvisible="8" %)**1**
233 )))|=(% _mstvisible="4" style="width: 51px;" %)(% _mstvisible="5" %)
234 (((
235 (% _mstvisible="6" %)
236 (% _msthash="1817483" _msttexthash="4732" _mstvisible="8" %)**4**
237 )))
238 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:97px" %)(% _mstvisible="5" %)
239 (((
240 (% _mstvisible="6" %)
241 (% _msthash="1817484" _msttexthash="60203" _mstvisible="8" %)**Value**
242 )))|(% _mstvisible="4" style="width:39px" %)(% _mstvisible="5" %)
243 (((
244 (% _mstvisible="6" %)
245 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo" _msthash="1817485" _msttexthash="22594" _mstvisible="7"]]
246 )))|(% _mstvisible="4" style="width:100px" %)(% _mstvisible="5" %)
247 (((
248 (% _mstvisible="6" %)
249 (((
250 (% _mstvisible="7" %)
251 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224742" _msttexthash="405769" _mstvisible="8"]]
252 )))
253 )))|(% _mstvisible="4" style="width:77px" %)(% _mstvisible="5" %)
254 (((
255 (% _mstvisible="6" %)
256 (((
257 (% _mstvisible="7" %)
258 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2224743" _msttexthash="105872" _mstvisible="8"]]
259 )))
260
261 (% _mstvisible="6" %)
262 (((
263 (% _mstvisible="7" %)
264 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224744" _msttexthash="117429" _mstvisible="8"]]
265 )))
266 )))|(% _mstvisible="4" style="width:47px" %)(% _mstvisible="5" %)
267 (((
268 (% _mstvisible="6" %)
269 [[Ext>>||anchor="H2.4.5Ext23" _msthash="1817486" _msttexthash="32331" _mstvisible="7"]] #
270 )))|(% _mstvisible="4" style="width:51px" %)(% _mstvisible="5" %)
271 (((
272 (% _mstvisible="6" %)
273 [[Ext value>>||anchor="H2.4.6Extvalue" _msthash="1817487" _msttexthash="116545" _mstvisible="7"]]
274 )))
275
276 * The First 6 bytes: has fix meanings for every LHT65N.
277 * The 7th byte (EXT #): defines the external sensor model.
278 * 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.)
279
280 === 2.4.1 Decoder in TTN V3 ===
281
282
283 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.
284
285 Below is the position to put the decoder and LHT65N decoder can be download from here:
286
287
288 [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0 >>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0||_msthash="315253" _msttexthash="3509064" _mstvisible="2"]]
289
290
291 [[image:image-20220522234118-10.png||_mstalt="451464" _mstvisible="3" height="353" width="729"]]
292
293
294
295
296 === 2.4.2 BAT-Battery Info ===
297
298
299 These two bytes of BAT include the battery state and the actually voltage
300
301 [[image:image-20220523152839-18.png||_mstalt="457613" _mstvisible="3"]]
302
303
304 [[image:image-20220522235639-1.png||_mstalt="431392" _mstvisible="3" height="139" width="727"]]
305
306
307 Check the battery voltage for LHT65N.
308
309 * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
310 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
311
312 === 2.4.3 Built-in Temperature ===
313
314
315 [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
316
317 * Temperature:  0x0ABB/100=27.47℃
318
319 [[image:image-20220522235639-3.png||_mstalt="432120" _mstvisible="3"]]
320
321 * Temperature:  (0xF5C6-65536)/100=-26.18℃
322
323 === 2.4.4 Built-in Humidity ===
324
325
326 [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
327
328 * Humidity:    0x025C/10=60.4%
329
330 === 2.4.5 Ext # ===
331
332
333 Bytes for External Sensor:
334
335 [[image:image-20220523152822-17.png||_mstalt="454545" _mstvisible="3"]]
336
337
338
339 === 2.4.6 Ext value ===
340
341
342 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
343
344
345 [[image:image-20220522235639-5.png||_mstalt="432848" _mstvisible="3"]]
346
347
348 * DS18B20 temp=0x0ADD/100=27.81℃
349
350 The last 2 bytes of data are meaningless
351
352 [[image:image-20220522235639-6.png||_mstalt="433212" _mstvisible="3"]]
353
354
355 * External temperature= (0xF54F-65536)/100=-27.37℃
356
357 The last 2 bytes of data are meaningless
358
359 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
360
361
362
363 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
364
365
366 (((
367 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:
368 )))
369
370 (((
371
372 )))
373
374 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
375 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 96px;" %)(% _mstvisible="5" %)
376 (((
377 (% _mstvisible="6" %)
378 (% _msthash="1817488" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
379 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
380 (((
381 (% _mstvisible="6" %)
382 (% _msthash="1817489" _msttexthash="4550" _mstvisible="8" %)**2**
383 )))|=(% _mstvisible="4" style="width: 99px;" %)(% _mstvisible="5" %)
384 (((
385 (% _mstvisible="6" %)
386 (% _msthash="1817490" _msttexthash="4550" _mstvisible="8" %)**2**
387 )))|=(% _mstvisible="4" style="width: 132px;" %)(% _mstvisible="5" %)
388 (((
389 (% _mstvisible="6" %)
390 (% _msthash="1817491" _msttexthash="4550" _mstvisible="8" %)**2**
391 )))|=(% _mstvisible="4" style="width: 54px;" %)(% _mstvisible="5" %)
392 (((
393 (% _mstvisible="6" %)
394 (% _msthash="1817492" _msttexthash="4459" _mstvisible="8" %)**1**
395 )))|=(% _mstvisible="4" style="width: 64px;" %)(% _mstvisible="5" %)
396 (((
397 (% _mstvisible="6" %)
398 (% _msthash="1817493" _msttexthash="4732" _mstvisible="8" %)**4**
399 )))
400 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:96px" %)(% _mstvisible="5" %)
401 (((
402 (% _mstvisible="6" %)
403 (% _msthash="1817494" _msttexthash="60203" _mstvisible="8" %)**Value**
404 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
405 (((
406 (% _mstvisible="6" %)
407 [[External temperature>>||anchor="H4.2SetExternalSensorMode" _msthash="1817495" _msttexthash="426517" _mstvisible="7"]]
408 )))|(% _mstvisible="4" style="width:99px" %)(% _mstvisible="5" %)
409 (((
410 (% _mstvisible="6" %)
411 (((
412 (% _mstvisible="7" %)
413 [[Built-In>>||anchor="H2.4.3Built-inTemperature" _msthash="2224745" _msttexthash="100464" _mstvisible="8"]]
414 )))
415
416 (% _mstvisible="6" %)
417 (((
418 (% _mstvisible="7" %)
419 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224746" _msttexthash="184041" _mstvisible="8"]]
420 )))
421 )))|(% _mstvisible="4" style="width:132px" %)(% _mstvisible="5" %)
422 (((
423 (% _mstvisible="6" %)
424 (((
425 (% _msthash="2224747" _msttexthash="136331" _mstvisible="7" %)
426 BAT Status &
427 )))
428
429 (% _mstvisible="6" %)
430 (((
431 (% _mstvisible="7" %)
432 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224748" _msttexthash="311181" _mstvisible="8"]]
433 )))
434 )))|(% _mstvisible="4" style="width:54px" %)(% _mstvisible="5" %)
435 (((
436 (% _msthash="1817496" _msttexthash="147225" _mstvisible="6" %)
437 Status & Ext
438 )))|(% _mstvisible="4" style="width:64px" %)(% _mstvisible="5" %)
439 (((
440 (% _mstvisible="6" %)
441 (((
442 (% _mstvisible="7" %)
443 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2224749" _msttexthash="227175" _mstvisible="8"]]
444 )))
445 )))
446
447 (% _mstvisible="1" %)
448 * (% _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**
449
450 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:469px" %)
451 (% _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]
452 (% _mstvisible="3" %)|(% _msthash="1230921" _msttexthash="60203" _mstvisible="4" style="width:65px" %)Value|(% _mstvisible="4" style="width:267px" %)(% _mstvisible="5" %)
453 (((
454 (% _msthash="1817497" _msttexthash="128427" _mstvisible="6" %)
455 BAT Status
456
457 (% _msthash="1817498" _msttexthash="472784" _mstvisible="6" %)
458 00(b): Ultra Low ( BAT <= 2.50v)
459
460 (% _msthash="1817499" _msttexthash="483678" _mstvisible="6" %)
461 01(b): Low  (2.50v <=BAT <= 2.55v)
462
463 (% _msthash="1817500" _msttexthash="440791" _mstvisible="6" %)
464 10(b): OK   (2.55v <= BAT <=2.65v)
465
466 (% _msthash="1817501" _msttexthash="334191" _mstvisible="6" %)
467 11(b): Good   (BAT >= 2.65v)
468 )))|(% _mstvisible="4" style="width:134px" %)(% _mstvisible="5" %)
469 (((
470 (% _mstvisible="6" %)
471 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="1817502" _msttexthash="311181" _mstvisible="7"]]
472
473 (% _mstvisible="6" %)
474
475 )))
476
477 * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
478
479 (% border="1" cellspacing="8" style="background-color:#ffffcc; color:green; width:520px" %)
480 |(% 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]**
481 |(% 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)
482
483 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
484 * (% 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.
485 * (% 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)
486
487
488 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
489
490
491 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
492
493 be used to power the external ADC sensor; user can control the power on time for this
494
495 sensor by setting:
496
497 AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)**Time to power this sensor, from 0 ~~ 65535ms**
498
499 For example:
500
501 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
502
503
504 Or use **downlink command A2** to set the same.
505
506 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
507
508 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.
509
510 [[image:image-20220628150112-1.png||height="241" width="285"]]
511
512
513 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
514
515 [[image:image-20220628150714-4.png]]
516
517
518 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.
519
520
521 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
522
523 [[image:image-20220628151005-5.png]]
524
525
526 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
527
528 [[image:image-20220628151056-6.png]]
529
530
531 3) Within range
532
533 [[image:image-20220628151143-7.png]]
534
535
536
537 ==== 2.4.6.4 Ext~=2 TMP117 Sensor （Since Firmware v1.3） ====
538
539 [[image:image-20220927095645-1.png||height="534" width="460"]]
540
541 **Ext=2,Temperature Sensor(TMP117)：**
542
543 [[image:image-20220906102307-7.png]]
544
545
546 (% style="color:blue" %)**Interrupt Mode and Counting Mode:**
547
548 The external cable NE2 can be use for MOD4 and MOD8
549
550
551
552
553 ==== 2.4.6.5 Ext~=4 Interrupt Mode （Since Firmware v1.3） ====
554
555
556 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will send an uplink when there is a trigger.**
557
558
559 (% style="color:blue" %)**Interrupt Mode can be used to connect to external interrupt sensors such as:**
560
561 **Case 1: Door Sensor.** 3.3v Out for such sensor is just to detect Open/Close.
562
563 In Open State, the power consumption is the same as if there is no probe
564
565 In Close state, the power consumption will be 3uA higher than normal.
566
567 [[image:image-20220906100852-1.png||height="205" width="377"]]
568
569
570 Ext=4,Interrupt Sensor：
571
572 (% border="2" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:512px" %)
573 |(% style="width:117px" %)(((
574 AT+EXT=4,1
575 )))|(% style="width:371px" %)(((
576 Sent uplink packet in both rising and falling interrupt
577 )))
578 |(% style="width:117px" %)(((
579 AT+EXT=4,2
580 )))|(% style="width:371px" %)(((
581 Sent uplink packet only in falling interrupt
582 )))
583 |(% style="width:117px" %)(((
584 AT+EXT=4,3
585 )))|(% style="width:371px" %)(((
586 Sent uplink packet only in rising interrupt
587 )))
588
589 Trigger by falling edge:
590
591 [[image:image-20220906101145-2.png]]
592
593
594 Trigger by raising edge：
595
596 [[image:image-20220906101145-3.png]]
597
598
599
600
601 ==== 2.4.6.6 Ext~=8 Counting Mode（Since Firmware v1.3） ====
602
603
604 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will count for every interrupt and uplink periodically.**
605
606
607 (% 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.
608
609 [[image:image-20220906101320-4.png||height="366" width="698"]]
610
611
612 (% 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
613
614 [[image:image-20220906101320-5.png||height="353" width="696"]]
615
616 Ext=8, Counting Sensor ( 4 bytes)：
617
618 (% border="2" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:381px" %)
619 |(% style="width:138px" %)(((
620 AT+EXT=8,0
621 )))|(% style="width:240px" %)(((
622 Count at falling interrupt
623 )))
624 |(% style="width:138px" %)(((
625 AT+EXT=8,1
626 )))|(% style="width:240px" %)(((
627 Count at rising interrupt
628 )))
629 |(% style="width:138px" %)(((
630 AT+SETCNT=60
631 )))|(% style="width:240px" %)(((
632 Sent current count to 60
633 )))
634
635 [[image:image-20220906101320-6.png]]
636
637
638 (% style="color:blue" %)**A2 downlink Command：**
639
640 A2 02:  Same as AT+EXT=2 (AT+EXT= second byte)
641
642 A2 06 01 F4:  Same as AT+EXT=6,500 (AT+EXT= second byte, third and fourth bytes)
643
644 A2 04 02:  Same as AT+EXT=4,2 (AT+EXT= second byte, third byte)
645
646 A2 08 01 00:  Same as AT+EXT=8,0 (AT+EXT= second byte, fourth byte)
647
648 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)
649
650
651 (% style="color:blue" %)**Modified ATWOOD command for external sensor TMP117 or DS18B20 temperature alarm.**
652
653
654 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
655
656 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
657
658 0): Cancel
659
660 1): Threshold alarm
661
662 2): Fluctuation alarm
663
664
665 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
666
667 (% 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.**
668
669
670 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
671
672 1):  If Alarm Mode is set to 1: Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
673
674 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
675
676
677 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.
678
679 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
680
681 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
682
683
684 (% style="color:blue" %)** Downlink:**
685
686 0xA5 00 ~-~- AT+WMOD=0.
687
688 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 )
689
690 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
691
692 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.
693
694
695
696
697 == 2.5 Show data on Datacake ==
698
699
700 (((
701 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:
702 )))
703
704 (((
705
706 )))
707
708 (((
709 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
710 )))
711
712 (((
713 (% 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.
714 )))
715
716 (((
717
718 )))
719
720 (((
721 Add Datacake:
722 )))
723
724
725 [[image:image-20220523000825-7.png||_mstalt="429884" _mstvisible="3" height="262" width="583"]]
726
727
728
729 Select default key as Access Key:
730
731
732 [[image:image-20220523000825-8.png||_mstalt="430248" _mstvisible="3" height="453" width="406"]]
733
734
735 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/||_mstvisible="2"]]) , add LHT65 device.
736
737
738 [[image:image-20220523000825-9.png||_mstalt="430612" _mstvisible="3" height="366" width="392"]]
739
740
741 [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
742
743
744
745 == 2.6 Datalog Feature ==
746
747
748 (((
749 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.
750 )))
751
752
753
754 === 2.6.1 Ways to get datalog via LoRaWAN ===
755
756
757 There are two methods:
758
759 1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specifying time range.
760 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.
761
762 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
763
764 [[image:image-20220703111700-2.png||height="381" width="1119"]]
765
766
767 === 2.6.2 Unix TimeStamp ===
768
769
770 LHT65N uses Unix TimeStamp format based on
771
772
773 [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
774
775
776
777 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
778
779 Below is the converter example
780
781 [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
782
783 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
784
785
786
787 === 2.6.3 Set Device Time ===
788
789
790 (((
791 There are two ways to set device's time:
792 )))
793
794 (((
795 **~1. Through LoRaWAN MAC Command (Default settings)**
796 )))
797
798 (((
799 User need to set SYNCMOD=1 to enable sync time via MAC command.
800 )))
801
802 (((
803 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).
804 )))
805
806 (((
807 (% 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.**
808 )))
809
810 (((
811
812 )))
813
814 (((
815 **2. Manually Set Time**
816 )))
817
818 (((
819 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
820 )))
821
822
823
824 === 2.6.4 Poll sensor value ===
825
826
827 User can poll sensor value based on timestamps from the server. Below is the downlink command.
828
829 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
830
831
832 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.
833
834 For example, downlink command **31 5FC5F350 5FC6 0160 05**
835
836 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
837
838 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
839
840
841
842 === 2.6.5 Datalog Uplink payload ===
843
844
845 (% _msthash="315267" _msttexthash="2245087" _mstvisible="1" %)
846 The Datalog poll reply uplink will use below payload format.
847
848 (% _mstvisible="1" %)
849 (((
850 (% _mstvisible="2" %)
851
852
853 (% _mstvisible="2" %)
854 (% _msthash="506080" _msttexthash="451581" _mstvisible="4" %)**Retrieval data payload**
855 )))
856
857 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
858 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 93px;" %)(% _mstvisible="5" %)
859 (((
860 (% _mstvisible="6" %)
861 (((
862 (% _mstvisible="7" %)
863 (% _msthash="2224750" _msttexthash="161122" _mstvisible="9" %)**Size(bytes)**
864 )))
865 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
866 (((
867 (% _mstvisible="6" %)
868 (((
869 (% _mstvisible="7" %)
870 (% _msthash="2224751" _msttexthash="4550" _mstvisible="9" %)**2**
871 )))
872 )))|=(% _mstvisible="4" style="width: 102px;" %)(% _mstvisible="5" %)
873 (((
874 (% _mstvisible="6" %)
875 (((
876 (% _mstvisible="7" %)
877 (% _msthash="2224752" _msttexthash="4550" _mstvisible="9" %)**2**
878 )))
879 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
880 (((
881 (% _mstvisible="6" %)
882 (((
883 (% _mstvisible="7" %)
884 (% _msthash="2224753" _msttexthash="4550" _mstvisible="9" %)**2**
885 )))
886 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
887 (((
888 (% _mstvisible="6" %)
889 (((
890 (% _mstvisible="7" %)
891 (% _msthash="2224754" _msttexthash="4459" _mstvisible="9" %)**1**
892 )))
893 )))|=(% _mstvisible="4" style="width: 48px;" %)(% _mstvisible="5" %)
894 (((
895 (% _mstvisible="6" %)
896 (((
897 (% _mstvisible="7" %)
898 (% _msthash="2224755" _msttexthash="4732" _mstvisible="9" %)**4**
899 )))
900 )))
901 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:93px" %)(% _mstvisible="5" %)
902 (((
903 (% _mstvisible="6" %)
904 (((
905 (% _mstvisible="7" %)
906 (% _msthash="2224756" _msttexthash="60203" _mstvisible="9" %)**Value**
907 )))
908 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
909 (((
910 (% _mstvisible="6" %)
911 (((
912 (% _mstvisible="7" %)
913 [[External sensor data>>||anchor="H2.4.6Extvalue" _msthash="2224757" _msttexthash="386672" _mstvisible="8"]]
914 )))
915 )))|(% _mstvisible="4" style="width:102px" %)(% _mstvisible="5" %)
916 (((
917 (% _mstvisible="6" %)
918 (((
919 (% _mstvisible="7" %)
920 (((
921 (% _mstvisible="8" %)
922 [[Built In>>||anchor="H2.4.3Built-inTemperature" _msthash="2671864" _msttexthash="91065" _mstvisible="9"]]
923 )))
924 )))
925
926 (% _mstvisible="6" %)
927 (((
928 (% _mstvisible="7" %)
929 (((
930 (% _mstvisible="8" %)
931 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2671865" _msttexthash="184041" _mstvisible="9"]]
932 )))
933 )))
934 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
935 (((
936 (% _mstvisible="6" %)
937 (((
938 (% _mstvisible="7" %)
939 (((
940 (% _mstvisible="8" %)
941 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2671866" _msttexthash="105872" _mstvisible="9"]]
942 )))
943 )))
944
945 (% _mstvisible="6" %)
946 (((
947 (% _mstvisible="7" %)
948 (((
949 (% _mstvisible="8" %)
950 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2671867" _msttexthash="117429" _mstvisible="9"]]
951 )))
952 )))
953 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
954 (((
955 (% _mstvisible="6" %)
956 (((
957 (% _msthash="2224758" _msttexthash="390390" _mstvisible="7" %)
958 Poll message flag & Ext
959 )))
960 )))|(% _mstvisible="4" style="width:48px" %)(% _mstvisible="5" %)
961 (((
962 (% _mstvisible="6" %)
963 (((
964 (% _mstvisible="7" %)
965 (((
966 (% _mstvisible="8" %)
967 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2671868" _msttexthash="227175" _mstvisible="9"]]
968 )))
969 )))
970
971 (% _mstvisible="6" %)
972 (((
973 (% _mstvisible="7" %)
974 (((
975 (% _mstvisible="8" %)
976
977 )))
978 )))
979 )))
980
981 (% _mstvisible="1" %)
982 (% _msthash="315268" _msttexthash="390390" _mstvisible="3" %)**Poll message flag & Ext**
983
984 (% _mstvisible="1" %)
985 [[image:image-20220523152208-14.png||_mstalt="452920" _mstvisible="3"]]
986
987 (% _mstvisible="1" %)
988 (((
989 (% _mstvisible="2" %)
990 (((
991 (% _msthash="736723" _msttexthash="2005003" _mstvisible="3" %)
992 (((
993 Poll Message Flag: 1: This message is a poll message reply.
994 )))
995 )))
996 )))
997
998 (% _mstvisible="1" %)
999 * (% _mstvisible="3" %)
1000 (((
1001 (% _mstvisible="4" %)
1002 (((
1003 (% _msthash="1197157" _msttexthash="561548" _mstvisible="5" %)
1004 (((
1005 Poll Message Flag is set to 1.
1006 )))
1007 )))
1008 )))
1009 * (% _mstvisible="3" %)
1010 (((
1011 (% _mstvisible="4" %)
1012 (((
1013 (% _msthash="1197158" _msttexthash="9284964" _mstvisible="5" %)
1014 (((
1015 Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
1016 )))
1017 )))
1018 )))
1019
1020 (% _mstvisible="1" %)
1021 (((
1022 (% _mstvisible="2" %)
1023 (((
1024 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
1025 (((
1026
1027 )))
1028
1029 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
1030 (((
1031 For example, in US915 band, the max payload for different DR is:
1032 )))
1033 )))
1034 )))
1035
1036 (% _mstvisible="1" %)
1037 (((
1038 (% _mstvisible="2" %)
1039 (((
1040 (% _msthash="736725" _msttexthash="1065532" _mstvisible="3" %)
1041 (((
1042 a) DR0: max is 11 bytes so one entry of data
1043 )))
1044 )))
1045 )))
1046
1047 (% _mstvisible="1" %)
1048 (((
1049 (% _mstvisible="2" %)
1050 (((
1051 (% _msthash="736726" _msttexthash="3265665" _mstvisible="3" %)
1052 (((
1053 b) DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
1054 )))
1055 )))
1056 )))
1057
1058 (% _mstvisible="1" %)
1059 (((
1060 (% _mstvisible="2" %)
1061 (((
1062 (% _msthash="736727" _msttexthash="1454115" _mstvisible="3" style="text-align: left;" %)
1063 (((
1064 c) DR2: total payload includes 11 entries of data
1065 )))
1066 )))
1067 )))
1068
1069 (% _mstvisible="1" %)
1070 (((
1071 (% _mstvisible="2" %)
1072 (((
1073 (% _msthash="736728" _msttexthash="1483924" _mstvisible="3" style="text-align: left;" %)
1074 (((
1075 d) DR3: total payload includes 22 entries of data.
1076 )))
1077 )))
1078 )))
1079
1080 (% _mstvisible="1" %)
1081 (((
1082 (% _mstvisible="2" %)
1083 (((
1084 (% _msthash="736729" _msttexthash="5848349" _mstvisible="3" style="text-align: left;" %)
1085 (((
1086 If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0   
1087 )))
1088 )))
1089 )))
1090
1091
1092 (% _mstvisible="1" style="text-align: left;" %)
1093 (% _msthash="315269" _msttexthash="104767" _mstvisible="3" %)**Example:**
1094
1095 (% _msthash="315270" _msttexthash="913822" _mstvisible="1" style="text-align: left;" %)
1096 If LHT65N has below data inside Flash:
1097
1098 (% _mstvisible="1" %)
1099 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
1100
1101 (% _mstvisible="1" %)
1102 (((
1103 (% _msthash="506081" _msttexthash="1663961" _mstvisible="2" style="text-align: left;" %)
1104 If user sends below downlink command: (% _mstvisible="3" style="background-color:yellow" %)3160065F9760066DA705
1105 )))
1106
1107 (% _mstvisible="1" %)
1108 (((
1109 (% _msthash="506082" _msttexthash="1092494" _mstvisible="2" style="text-align: left;" %)
1110 Where : Start time: 60065F97 = time 21/1/19 04:27:03
1111 )))
1112
1113 (% _mstvisible="1" %)
1114 (((
1115 (% _msthash="506083" _msttexthash="737269" _mstvisible="2" style="text-align: left;" %)
1116 Stop time 60066DA7= time 21/1/19 05:27:(% _msthash="903005" _msttexthash="9672" _mstvisible="2" %)03
1117 )))
1118
1119 (% _mstvisible="1" %)
1120 (((
1121 (% _mstvisible="2" %)
1122
1123 )))
1124
1125 (% _mstvisible="1" %)
1126 (((
1127 (% _msthash="506084" _msttexthash="751218" _mstvisible="2" style="text-align: left;" %)
1128 LHT65N will uplink this payload.
1129 )))
1130
1131 (% _mstvisible="1" %)
1132 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
1133
1134 (% _msthash="315271" _msttexthash="12012546" _mstvisible="1" style="text-align: left;" %)
1135 (((
1136 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
1137 )))
1138
1139 (% _msthash="315237" _msttexthash="1385839" %)
1140 (((
1141 Where the first 11 bytes is for the first entry:
1142 )))
1143
1144 (% _msthash="315238" _msttexthash="274846" %)
1145 (((
1146 7FFF089801464160065F97
1147 )))
1148
1149 (% _msthash="315239" _msttexthash="617435" %)
1150 (((
1151 Ext sensor data=0x7FFF/100=327.67
1152 )))
1153
1154 (% _msthash="315240" _msttexthash="270543" %)
1155 (((
1156 Temp=0x0898/100=22.00
1157 )))
1158
1159 (% _msthash="315241" _msttexthash="211783" %)
1160 (((
1161 Hum=0x0146/10=32.6
1162 )))
1163
1164 (% _msthash="315242" _msttexthash="1569776" %)
1165 (((
1166 poll message flag & Ext=0x41,means reply data,Ext=1
1167 )))
1168
1169 (% _msthash="315243" _msttexthash="1120509" %)
1170 (((
1171 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
1172 )))
1173
1174
1175
1176 == 2.7 Alarm Mode ==
1177
1178
1179 (((
1180 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.
1181 )))
1182
1183 (((
1184 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
1185
1186
1187 )))
1188
1189 (((
1190 **AT COMMAND FOR ALARM MODE:**
1191 )))
1192
1193 (% _mstvisible="1" class="box infomessage" %)
1194 (((
1195 (((
1196 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled)
1197 )))
1198
1199 (((
1200 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1201 )))
1202
1203 (((
1204 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1205 )))
1206
1207 (((
1208 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
1209 )))
1210
1211 (((
1212 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1213 )))
1214 )))
1215
1216 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1217
1218 Total bytes: 8 bytes
1219
1220 **Example:**AA0100010001003C
1221
1222 WMOD=01
1223
1224 CITEMP=0001
1225
1226 TEMPlow=0001
1227
1228 TEMPhigh=003C
1229
1230
1231
1232 == 2.8 LED Indicator ==
1233
1234
1235 The LHT65 has a triple color LED which for easy showing different stage .
1236
1237 While user press ACT button, the LED will work as per LED status with ACT button.
1238
1239 In a normal working state:
1240
1241 * For each uplink, the BLUE LED or RED LED will blink once.
1242 BLUE LED when external sensor is connected.
1243 * RED LED when external sensor is not connected
1244 * For each success downlink, the PURPLE LED will blink once
1245
1246
1247 == 2.9 installation ==
1248
1249
1250 (% _mstvisible="1" %)
1251 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
1252
1253
1254
1255 = 3. Sensors and Accessories =
1256
1257
1258 == 3.1 E2 Extension Cable ==
1259
1260
1261 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1262
1263
1264 **1m long breakout cable for LHT65N. Features:**
1265
1266 * (((
1267 Use for AT Command， works for both LHT52/LHT65N
1268 )))
1269 * (((
1270 Update firmware for LHT65N, works for both LHT52/LHT65N
1271 )))
1272 * (((
1273 Supports ADC mode to monitor external ADC
1274 )))
1275 * (((
1276 Supports Interrupt mode
1277 )))
1278 * (((
1279 Exposed All pins from the LHT65N Type-C connector.
1280
1281
1282
1283 )))
1284
1285 [[image:image-20220619092421-3.png||height="371" width="529"]]
1286
1287
1288
1289
1290 == 3.2 E3 Temperature Probe ==
1291
1292
1293 [[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"]]
1294
1295
1296 Temperature sensor with 2 meters cable long
1297
1298 * Resolution: 0.0625 °C
1299 * ±0.5°C accuracy from -10°C to +85°C
1300 * ±2°C accuracy from -55°C to +125°C
1301 * Operating Range: -40 ~~ 125 °C
1302 * Working voltage 2.35v ~~ 5v
1303
1304 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1305
1306
1307 (((
1308 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1309 )))
1310
1311 * (((
1312 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1313 )))
1314
1315 * (((
1316 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1317 )))
1318
1319 (((
1320 There are two kinds of commands to configure LHT65N, they are:
1321 )))
1322
1323 * (((
1324 (% style="color:#4f81bd" %)**General Commands**.
1325 )))
1326
1327 (((
1328 These commands are to configure:
1329 )))
1330
1331 1. (((
1332 General system settings like: uplink interval.
1333 )))
1334 1. (((
1335 LoRaWAN protocol & radio-related commands.
1336 )))
1337
1338 (((
1339 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]]
1340 )))
1341
1342 * (((
1343 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1344 )))
1345
1346 (((
1347 These commands are only valid for LHT65N, as below:
1348 )))
1349
1350
1351
1352 == 4.1 Set Transmit Interval Time ==
1353
1354
1355 Feature: Change LoRaWAN End Node Transmit Interval.
1356
1357
1358 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1359
1360 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
1361
1362
1363 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1364
1365 Format: Command Code (0x01) followed by 3 bytes time value.
1366
1367 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1368
1369 * **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1370
1371 * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1372
1373
1374 == 4.2 Set External Sensor Mode ==
1375
1376
1377 Feature: Change External Sensor Mode.
1378
1379
1380 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1381
1382 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1383
1384
1385 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1386
1387 Total bytes: 2 ~~ 5 bytes
1388
1389 **Example:**
1390
1391 * 0xA201: Set external sensor type to E1
1392
1393 * 0xA209: Same as AT+EXT=9
1394
1395 * 0xA20702003c: Same as AT+SETCNT=60
1396
1397
1398 == 4.3 Enable/Disable uplink Temperature probe ID ==
1399
1400
1401 (((
1402 Feature: If PID is enabled, device will send the temperature probe ID on:
1403 )))
1404
1405 * (((
1406 First Packet after OTAA Join
1407 )))
1408 * (((
1409 Every 24 hours since the first packet.
1410 )))
1411
1412 (((
1413 PID is default set to disable (0)
1414
1415
1416 )))
1417
1418 (% style="color:#4f81bd" %)**AT Command:**
1419
1420 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1421
1422
1423 (% style="color:#4f81bd" %)**Downlink Command:**
1424
1425 * **0xA800**  **~-~->** AT+PID=0
1426 * **0xA801**     **~-~->** AT+PID=1
1427
1428
1429 == 4.4 Set Password ==
1430
1431
1432 Feature: Set device password, max 9 digits
1433
1434
1435 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1436
1437 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1438
1439
1440 (% style="color:#4f81bd" %)**Downlink Command:**
1441
1442 No downlink command for this feature.
1443
1444
1445
1446 == 4.5 Quit AT Command ==
1447
1448
1449 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1450
1451
1452 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1453
1454 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1455
1456
1457 (% style="color:#4f81bd" %)**Downlink Command:**
1458
1459 No downlink command for this feature.
1460
1461
1462
1463 == 4.6 Set to sleep mode ==
1464
1465
1466 Feature: Set device to sleep mode
1467
1468 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1469 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1470
1471 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1472
1473 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1474
1475
1476 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1477
1478 * There is no downlink command to set to Sleep mode.
1479
1480
1481 == 4.7 Set system time ==
1482
1483
1484 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1485
1486
1487 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1488
1489 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1490
1491
1492 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1493
1494 0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1495
1496
1497
1498 == 4.8 Set Time Sync Mode ==
1499
1500
1501 (((
1502 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1503 )))
1504
1505 (((
1506 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.
1507
1508
1509 )))
1510
1511 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1512
1513 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1514
1515
1516 (% style="color:#4f81bd" %)**Downlink Command:**
1517
1518 0x28 01 ~/~/ Same As AT+SYNCMOD=1
1519 0x28 00 ~/~/ Same As AT+SYNCMOD=0
1520
1521
1522
1523 == 4.9 Set Time Sync Interval ==
1524
1525
1526 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1527
1528
1529 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1530
1531 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1532
1533
1534 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1535
1536 **0x29 0A** ~/~/ Same as AT+SYNCTDC=0x0A
1537
1538
1539
1540 == 4.10 Print data entries base on page. ==
1541
1542
1543 Feature: Print the sector data from start page to stop page (max is 416 pages).
1544
1545
1546 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1547
1548 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1549
1550
1551 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1552
1553 No downlink commands for feature
1554
1555
1556
1557 == 4.11 Print last few data entries. ==
1558
1559
1560 Feature: Print the last few data entries
1561
1562
1563 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1564
1565 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1566
1567
1568 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1569
1570 No downlink commands for feature
1571
1572
1573
1574 == 4.12 Clear Flash Record ==
1575
1576
1577 Feature: Clear flash storage for data log feature.
1578
1579
1580 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1581
1582 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1583
1584
1585 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1586
1587 * Example: 0xA301 ~/~/Same as AT+CLRDTA
1588
1589
1590 == 4.13 Auto Send None-ACK messages ==
1591
1592
1593 (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
1594 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.
1595
1596
1597 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1598
1599 (% _msthash="315396" _msttexthash="734682" _mstvisible="1" %)
1600 The default factory setting is 0
1601
1602 (% _mstvisible="1" border="1" style="background-color:#ffffcc; color:green; width:450px" %)
1603 (% _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**
1604 (% _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
1605
1606 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1607
1608 * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1609
1610
1611 = 5. Battery & How to replace =
1612
1613
1614 == 5.1 Battery Type ==
1615
1616
1617 (((
1618 (((
1619 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.
1620 )))
1621 )))
1622
1623 (((
1624
1625 )))
1626
1627 (((
1628 (((
1629 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1630 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1631 )))
1632 )))
1633
1634 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1635
1636
1637
1638 == 5.2 Replace Battery ==
1639
1640
1641 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.
1642
1643 [[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"]]
1644
1645
1646 == 5.3 Battery Life Analyze ==
1647
1648
1649 (((
1650 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:
1651 [[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]]
1652 )))
1653
1654 (((
1655
1656 )))
1657
1658 (((
1659 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]]
1660 )))
1661
1662
1663
1664 = 6. FAQ =
1665
1666
1667 == 6.1 How to use AT Command? ==
1668
1669
1670 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.
1671
1672 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1673
1674
1675 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1676
1677 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1678 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1679 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1680 * (% style="background-color:yellow" %)**USB to TTL 3.3V <~-~-> D-**
1681
1682 (((
1683 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.
1684 )))
1685
1686
1687 Input password and ATZ to activate LHT65N,As shown below:
1688
1689 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1690
1691
1692 (% _msthash="506066" _msttexthash="544869" %)
1693 AT Command List is as below:
1694
1695 (% _msthash="506067" _msttexthash="361920" %)
1696 AT+<CMD>? :  Help on <CMD>
1697
1698 (% _msthash="506068" _msttexthash="243061" %)
1699 AT+<CMD> :  Run <CMD>
1700
1701 (% _msthash="506069" _msttexthash="704197" %)
1702 AT+<CMD>=<value> :  Set the value
1703
1704 (% _msthash="506070" _msttexthash="455676" %)
1705 AT+<CMD>=? :  Get the value
1706
1707 (% _msthash="506071" _msttexthash="670553" %)
1708 AT+DEBUG:  Set more info output
1709
1710 (% _msthash="506072" _msttexthash="485888" %)
1711 ATZ:  Trig a reset of the MCU
1712
1713 (% _msthash="506073" _msttexthash="2068872" %)
1714 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1715
1716 (% _msthash="506074" _msttexthash="689169" %)
1717 AT+DEUI:  Get or Set the Device EUI
1718
1719 (% _msthash="506075" _msttexthash="960414" %)
1720 AT+DADDR:  Get or Set the Device Address
1721
1722 (% _msthash="506076" _msttexthash="1079897" %)
1723 AT+APPKEY:  Get or Set the Application Key
1724
1725 (% _msthash="506077" _msttexthash="1326143" %)
1726 AT+NWKSKEY:  Get or Set the Network Session Key
1727
1728 (% _msthash="506078" _msttexthash="1573000" %)
1729 AT+APPSKEY:  Get or Set the Application Session Key
1730
1731 (% _msthash="506079" _msttexthash="1041729" %)
1732 AT+APPEUI:  Get or Set the Application EUI
1733
1734 (% _msthash="506080" _msttexthash="2104206" %)
1735 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1736
1737 (% _msthash="506081" _msttexthash="3369288" %)
1738 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1739
1740 (% _msthash="506082" _msttexthash="1894529" %)
1741 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1742
1743 (% _msthash="506083" _msttexthash="3864172" %)
1744 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1745
1746 (% _msthash="506084" _msttexthash="1712204" %)
1747 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1748
1749 (% _msthash="506085" _msttexthash="1281202" %)
1750 AT+RX2FQ:  Get or Set the Rx2 window frequency
1751
1752 (% _msthash="506086" _msttexthash="2796781" %)
1753 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1754
1755 (% _msthash="506087" _msttexthash="3285165" %)
1756 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1757
1758 (% _msthash="506088" _msttexthash="3286179" %)
1759 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1760
1761 (% _msthash="506089" _msttexthash="4703803" %)
1762 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1763
1764 (% _msthash="506090" _msttexthash="4704999" %)
1765 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1766
1767 (% _msthash="506091" _msttexthash="1528683" %)
1768 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1769
1770 (% _msthash="506092" _msttexthash="757185" %)
1771 AT+NWKID:  Get or Set the Network ID
1772
1773 (% _msthash="506093" _msttexthash="1156597" %)
1774 AT+FCU:  Get or Set the Frame Counter Uplink
1775
1776 (% _msthash="506094" _msttexthash="1273987" %)
1777 AT+FCD:  Get or Set the Frame Counter Downlink
1778
1779 (% _msthash="506095" _msttexthash="859222" %)
1780 AT+CLASS:  Get or Set the Device Class
1781
1782 (% _msthash="506096" _msttexthash="384852" %)
1783 AT+JOIN:  Join network
1784
1785 (% _msthash="506097" _msttexthash="548626" %)
1786 AT+NJS:  Get the join status
1787
1788 (% _msthash="506098" _msttexthash="2546206" %)
1789 AT+SENDB:  Send hexadecimal data along with the application port
1790
1791 (% _msthash="506099" _msttexthash="1932307" %)
1792 AT+SEND:  Send text data along with the application port
1793
1794 (% _msthash="506100" _msttexthash="3560557" %)
1795 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1796
1797 (% _msthash="506101" _msttexthash="1429701" %)
1798 AT+RECV:  Print last received data in raw format
1799
1800 (% _msthash="506102" _msttexthash="1735981" %)
1801 AT+VER:  Get current image version and Frequency Band
1802
1803 (% _msthash="506103" _msttexthash="1189474" %)
1804 AT+CFM:  Get or Set the confirmation mode (0-1)
1805
1806 (% _msthash="506104" _msttexthash="1718210" %)
1807 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1808
1809 (% _msthash="506105" _msttexthash="1339403" %)
1810 AT+SNR:  Get the SNR of the last received packet
1811
1812 (% _msthash="506106" _msttexthash="1452009" %)
1813 AT+RSSI:  Get the RSSI of the last received packet
1814
1815 (% _msthash="506107" _msttexthash="2768142" %)
1816 AT+TDC:  Get or set the application data transmission interval in ms
1817
1818 (% _msthash="506108" _msttexthash="1083914" %)
1819 AT+PORT:  Get or set the application port
1820
1821 (% _msthash="506109" _msttexthash="622440" %)
1822 AT+DISAT:  Disable AT commands
1823
1824 (% _msthash="506110" _msttexthash="868361" %)
1825 AT+PWORD: Set password, max 9 digits
1826
1827 (% _msthash="506111" _msttexthash="2210299" %)
1828 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1829
1830 (% _msthash="506112" _msttexthash="2113462" %)
1831 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1832
1833 (% _msthash="506113" _msttexthash="2087423" %)
1834 AT+PDTA:  Print the sector data from start page to stop page
1835
1836 (% _msthash="506114" _msttexthash="1063127" %)
1837 AT+PLDTA:  Print the last few sets of data
1838
1839 (% _msthash="506115" _msttexthash="1999426" %)
1840 AT+CLRDTA:  Clear the storage, record position back to 1st
1841
1842 (% _msthash="506116" _msttexthash="442130" %)
1843 AT+SLEEP:  Set sleep mode
1844
1845 (% _msthash="506117" _msttexthash="1080222" %)
1846 AT+EXT:  Get or Set external sensor model
1847
1848 (% _msthash="506118" _msttexthash="1309490" %)
1849 AT+BAT:  Get the current battery voltage in mV
1850
1851 (% _msthash="506119" _msttexthash="813891" %)
1852 AT+CFG:  Print all configurations
1853
1854 (% _msthash="506120" _msttexthash="551707" %)
1855 AT+WMOD:  Get or Set Work Mode
1856
1857 (% _msthash="506121" _msttexthash="2631499" %)
1858 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1859
1860 (% _msthash="506122" _msttexthash="3907150" %)
1861 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1862
1863 (% _msthash="506123" _msttexthash="854620" %)
1864 AT+SETCNT:  Set the count at present
1865
1866 (% _msthash="506124" _msttexthash="2554877" %)
1867 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1868
1869 (% _msthash="506125" _msttexthash="771849" %)
1870 AT+RPL:  Get or set response level
1871
1872 (% _msthash="506126" _msttexthash="1484314" %)
1873 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1874
1875 (% _msthash="506127" _msttexthash="741728" %)
1876 AT+LEAPSEC:  Get or Set Leap Second
1877
1878 (% _msthash="506128" _msttexthash="1694017" %)
1879 AT+SYNCMOD:  Get or Set time synchronization method
1880
1881 (% _msthash="506129" _msttexthash="2235948" %)
1882 AT+SYNCTDC:  Get or set time synchronization interval in day
1883
1884 (% _msthash="506130" _msttexthash="425542" %)
1885 AT+PID:  Get or set the PID
1886
1887
1888
1889 == 6.2 Where to use AT commands and Downlink commands ==
1890
1891
1892 **AT commands：**
1893
1894 [[image:image-20220620153708-1.png||height="603" width="723"]]
1895
1896
1897 **Downlink commands:**
1898
1899
1900
1901 (% style="color:blue" %)**TTN:**
1902
1903 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1904
1905
1906
1907 (% style="color:blue" %)**Helium：**
1908
1909 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1910
1911
1912
1913 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1914
1915
1916 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1917
1918
1919 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1920
1921
1922
1923 (% style="color:blue" %)**Aws:**
1924
1925 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1926
1927
1928
1929 == 6.3 How to change the uplink interval？ ==
1930
1931
1932 [[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"]]
1933
1934
1935
1936 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1937
1938
1939 [[image:image-20220615153355-1.png]]
1940
1941 [[image:1655802313617-381.png]]
1942
1943
1944 (((
1945 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.
1946 )))
1947
1948
1949 Input password and ATZ to activate LHT65N,As shown below:
1950
1951 [[image:image-20220615154519-3.png||height="672" width="807"]]
1952
1953
1954
1955 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1956
1957
1958 [[image:image-20220615153355-1.png]]
1959
1960
1961 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1962
1963 [[image:image-20220615170542-5.png]]
1964
1965
1966 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1967
1968 (% _msthash="506146" _msttexthash="52173160" %)
1969 First connect the four lines；(% style="display:none" %)
1970
1971 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1972
1973
1974 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1975
1976 [[image:image-20220621170938-2.png]]
1977
1978
1979 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1980
1981 [[image:image-20220615171334-6.png]]
1982
1983
1984 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1985
1986
1987 When this interface appears, it indicates that the download has been completed.
1988
1989 [[image:image-20220620160723-8.png]]
1990
1991
1992 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1993
1994
1995
1996 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1997
1998
1999 [[image:image-20220623110706-1.png]]
2000
2001
2002 [[image:image-20220623112117-4.png||height="459" width="343"]]
2003
2004
2005 (((
2006 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.
2007 )))
2008
2009
2010 Input password and ATZ to activate LHT65N,As shown below:
2011
2012 [[image:image-20220615154519-3.png||height="672" width="807"]]
2013
2014
2015
2016 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
2017
2018
2019 [[image:image-20220623110706-1.png]]
2020
2021
2022 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
2023
2024 [[image:image-20220615170542-5.png]]
2025
2026
2027 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
2028
2029 (% _msthash="506146" _msttexthash="52173160" %)
2030 First connect the four lines；
2031
2032 (% _msthash="506146" _msttexthash="52173160" %)
2033 [[image:image-20220623113959-5.png||height="528" width="397"]]
2034
2035 (% _msthash="506146" _msttexthash="52173160" %)
2036 Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
2037
2038
2039 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
2040
2041 [[image:image-20220615171334-6.png]]
2042
2043
2044 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
2045
2046
2047 When this interface appears, it indicates that the download has been completed.
2048
2049 [[image:image-20220620160723-8.png]]
2050
2051
2052 Finally,restart reset device again
2053
2054
2055
2056 = 7. Order Info =
2057
2058
2059 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
2060
2061 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
2062
2063 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
2064 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
2065 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
2066 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
2067 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
2068 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
2069 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
2070 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
2071
2072 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
2073
2074 * (% style="color:red" %)**E3**(%%): External Temperature Probe
2075
2076
2077 = 8. Packing Info =
2078
2079
2080 **Package Includes**:
2081
2082 * LHT65N Temperature & Humidity Sensor x 1
2083 * Optional external sensor
2084
2085 **Dimension and weight**:
2086
2087 * Device Size:  10 x 10 x 3.5 cm
2088 * Device Weight: 120.5g
2089
2090
2091 = 9. Reference material =
2092
2093
2094 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
2095
2096
2097 = 10. FCC Warning =
2098
2099
2100 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
2101
2102 (1) This device may not cause harmful interference；
2103
2104 (2) this device must accept any interference received, including interference that may cause undesired operation.
2105
2106
2107