Version 208.1 by Edwin Chen on 2022/10/18 10:07
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9 (% _msthash="315238" _msttexthash="18964465" _mstvisible="3" %)**Table of Contents：**
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11 {{toc/}}
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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 == 1.3 Specification ==
65
66
67 (% style="color:#037691" %)**Built-in Temperature Sensor:**
68
69 * Resolution: 0.01 °C
70 * Accuracy Tolerance : Typ ±0.3 °C
71 * Long Term Drift: < 0.02 °C/yr
72 * Operating Range: -40 ~~ 85 °C
73
74 (% style="color:#037691" %)**Built-in Humidity Sensor:**
75
76 * Resolution: 0.04 %RH
77 * Accuracy Tolerance : Typ ±3 %RH
78 * Long Term Drift: < 0.02 °C/yr
79 * Operating Range: 0 ~~ 96 %RH
80
81 (% style="color:#037691" %)**External Temperature Sensor:**
82
83 * Resolution: 0.0625 °C
84 * ±0.5°C accuracy from -10°C to +85°C
85 * ±2°C accuracy from -55°C to +125°C
86 * Operating Range: -55 °C ~~ 125 °C
87
88 = 2. Connect LHT65N to IoT Server =
89
90
91 == 2.1 How does LHT65N work? ==
92
93
94 (((
95 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.
96 )))
97
98 (((
99 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.
100 )))
101
102
103
104 == 2.2 How to Activate LHT65N? ==
105
106
107 (((
108 The LHT65N has two working modes:
109 )))
110
111 * (((
112 (% 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.
113 )))
114 * (((
115 (% 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. 
116 )))
117
118 (((
119 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
120 )))
121
122
123 [[image:image-20220515123819-1.png||_mstalt="430742" _mstvisible="3" height="379" width="317"]]
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125 [[image:image-20220525110604-2.png||_mstalt="427531" _mstvisible="3"]]
126
127
128
129 == 2.3 Example to join LoRaWAN network ==
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131
132 (% _msthash="315240" _msttexthash="9205482" _mstvisible="1" class="wikigeneratedid" %)
133 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.
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135
136 (% _mstvisible="1" class="wikigeneratedid" %)
137 [[image:image-20220522232442-1.png||_mstalt="427830" _mstvisible="3" height="387" width="648"]]
138
139
140 (((
141 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:
142 )))
143
144
145
146 === 2.3.1 Step 1: Create Device n TTN ===
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148
149 (((
150 Create a device in TTN V3 with the OTAA keys from LHT65N.
151 )))
152
153 (((
154 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
155 )))
156
157 [[image:image-20220617150003-1.jpeg]]
158
159 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
160
161 Add APP EUI in the application.
162
163
164 [[image:image-20220522232916-3.png||_mstalt="430495" _mstvisible="3"]]
165
166
167 [[image:image-20220522232932-4.png||_mstalt="430157" _mstvisible="3"]]
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170 [[image:image-20220522232954-5.png||_mstalt="431847" _mstvisible="3"]]
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173
174 (% style="color:red" %)**Note: LHT65N use same payload as LHT65.**
175
176
177 [[image:image-20220522233026-6.png||_mstalt="429403" _mstvisible="3"]]
178
179
180 Input APP EUI,  APP KEY and DEV EUI:
181
182
183 [[image:image-20220522233118-7.png||_mstalt="430430" _mstvisible="3"]]
184
185
186
187
188 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
189
190
191 (((
192 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.
193 )))
194
195 [[image:image-20220522233300-8.png||_mstalt="428389" _mstvisible="3" height="219" width="722"]]
196
197
198
199
200 == 2.4 Uplink Payload   ( Fport~=2) ==
201
202
203 (((
204 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.
205 )))
206
207 (((
208 After each uplink, the (% _mstvisible="3" style="color:blue" %)**BLUE LED**(%%) will blink once.
209 )))
210
211 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:426px" %)
212 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 97px;" %)(% _mstvisible="5" %)
213 (((
214 (% _mstvisible="6" %)
215 (% _msthash="1817478" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
216 )))|=(% _mstvisible="4" style="width: 39px;" %)(% _mstvisible="5" %)
217 (((
218 (% _mstvisible="6" %)
219 (% _msthash="1817479" _msttexthash="4550" _mstvisible="8" %)**2**
220 )))|=(% _mstvisible="4" style="width: 100px;" %)(% _mstvisible="5" %)
221 (((
222 (% _mstvisible="6" %)
223 (% _msthash="1817480" _msttexthash="4550" _mstvisible="8" %)**2**
224 )))|=(% _mstvisible="4" style="width: 77px;" %)(% _mstvisible="5" %)
225 (((
226 (% _mstvisible="6" %)
227 (% _msthash="1817481" _msttexthash="4550" _mstvisible="8" %)**2**
228 )))|=(% _mstvisible="4" style="width: 47px;" %)(% _mstvisible="5" %)
229 (((
230 (% _mstvisible="6" %)
231 (% _msthash="1817482" _msttexthash="4459" _mstvisible="8" %)**1**
232 )))|=(% _mstvisible="4" style="width: 51px;" %)(% _mstvisible="5" %)
233 (((
234 (% _mstvisible="6" %)
235 (% _msthash="1817483" _msttexthash="4732" _mstvisible="8" %)**4**
236 )))
237 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:97px" %)(% _mstvisible="5" %)
238 (((
239 (% _mstvisible="6" %)
240 (% _msthash="1817484" _msttexthash="60203" _mstvisible="8" %)**Value**
241 )))|(% _mstvisible="4" style="width:39px" %)(% _mstvisible="5" %)
242 (((
243 (% _mstvisible="6" %)
244 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo" _msthash="1817485" _msttexthash="22594" _mstvisible="7"]]
245 )))|(% _mstvisible="4" style="width:100px" %)(% _mstvisible="5" %)
246 (((
247 (% _mstvisible="6" %)
248 (((
249 (% _mstvisible="7" %)
250 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224742" _msttexthash="405769" _mstvisible="8"]]
251 )))
252 )))|(% _mstvisible="4" style="width:77px" %)(% _mstvisible="5" %)
253 (((
254 (% _mstvisible="6" %)
255 (((
256 (% _mstvisible="7" %)
257 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2224743" _msttexthash="105872" _mstvisible="8"]]
258 )))
259
260 (% _mstvisible="6" %)
261 (((
262 (% _mstvisible="7" %)
263 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224744" _msttexthash="117429" _mstvisible="8"]]
264 )))
265 )))|(% _mstvisible="4" style="width:47px" %)(% _mstvisible="5" %)
266 (((
267 (% _mstvisible="6" %)
268 [[Ext>>||anchor="H2.4.5Ext23" _msthash="1817486" _msttexthash="32331" _mstvisible="7"]] #
269 )))|(% _mstvisible="4" style="width:51px" %)(% _mstvisible="5" %)
270 (((
271 (% _mstvisible="6" %)
272 [[Ext value>>||anchor="H2.4.6Extvalue" _msthash="1817487" _msttexthash="116545" _mstvisible="7"]]
273 )))
274
275 * The First 6 bytes: has fix meanings for every LHT65N.
276 * The 7th byte (EXT #): defines the external sensor model.
277 * 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.)
278
279 === 2.4.1 Decoder in TTN V3 ===
280
281
282 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.
283
284 Below is the position to put the decoder and LHT65N decoder can be download from here: [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
285
286
287 [[image:image-20220522234118-10.png||_mstalt="451464" _mstvisible="3" height="353" width="729"]]
288
289
290
291
292 === 2.4.2 BAT-Battery Info ===
293
294
295 These two bytes of BAT include the battery state and the actually voltage
296
297 [[image:image-20220523152839-18.png||_mstalt="457613" _mstvisible="3"]]
298
299
300 [[image:image-20220522235639-1.png||_mstalt="431392" _mstvisible="3" height="139" width="727"]]
301
302
303 Check the battery voltage for LHT65N.
304
305 * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
306 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
307
308 === 2.4.3 Built-in Temperature ===
309
310
311 [[image:image-20220522235639-2.png||_mstalt="431756" _mstvisible="3" height="138" width="722"]]
312
313 * Temperature:  0x0ABB/100=27.47℃
314
315 [[image:image-20220522235639-3.png||_mstalt="432120" _mstvisible="3"]]
316
317 * Temperature:  (0xF5C6-65536)/100=-26.18℃
318
319 === 2.4.4 Built-in Humidity ===
320
321
322 [[image:image-20220522235639-4.png||_mstalt="432484" _mstvisible="3" height="138" width="722"]]
323
324 * Humidity:    0x025C/10=60.4%
325
326 === 2.4.5 Ext # ===
327
328
329 Bytes for External Sensor:
330
331 [[image:image-20220523152822-17.png||_mstalt="454545" _mstvisible="3"]]
332
333
334
335 === 2.4.6 Ext value ===
336
337
338 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
339
340
341 [[image:image-20220522235639-5.png||_mstalt="432848" _mstvisible="3"]]
342
343
344 * DS18B20 temp=0x0ADD/100=27.81℃
345
346 The last 2 bytes of data are meaningless
347
348 [[image:image-20220522235639-6.png||_mstalt="433212" _mstvisible="3"]]
349
350
351 * External temperature= (0xF54F-65536)/100=-27.37℃
352
353 The last 2 bytes of data are meaningless
354
355 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
356
357
358
359 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
360
361
362 (((
363 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:
364 )))
365
366 (((
367
368 )))
369
370 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
371 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 96px;" %)(% _mstvisible="5" %)
372 (((
373 (% _mstvisible="6" %)
374 (% _msthash="1817488" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
375 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
376 (((
377 (% _mstvisible="6" %)
378 (% _msthash="1817489" _msttexthash="4550" _mstvisible="8" %)**2**
379 )))|=(% _mstvisible="4" style="width: 99px;" %)(% _mstvisible="5" %)
380 (((
381 (% _mstvisible="6" %)
382 (% _msthash="1817490" _msttexthash="4550" _mstvisible="8" %)**2**
383 )))|=(% _mstvisible="4" style="width: 132px;" %)(% _mstvisible="5" %)
384 (((
385 (% _mstvisible="6" %)
386 (% _msthash="1817491" _msttexthash="4550" _mstvisible="8" %)**2**
387 )))|=(% _mstvisible="4" style="width: 54px;" %)(% _mstvisible="5" %)
388 (((
389 (% _mstvisible="6" %)
390 (% _msthash="1817492" _msttexthash="4459" _mstvisible="8" %)**1**
391 )))|=(% _mstvisible="4" style="width: 64px;" %)(% _mstvisible="5" %)
392 (((
393 (% _mstvisible="6" %)
394 (% _msthash="1817493" _msttexthash="4732" _mstvisible="8" %)**4**
395 )))
396 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:96px" %)(% _mstvisible="5" %)
397 (((
398 (% _mstvisible="6" %)
399 (% _msthash="1817494" _msttexthash="60203" _mstvisible="8" %)**Value**
400 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
401 (((
402 (% _mstvisible="6" %)
403 [[External temperature>>||anchor="H4.2SetExternalSensorMode" _msthash="1817495" _msttexthash="426517" _mstvisible="7"]]
404 )))|(% _mstvisible="4" style="width:99px" %)(% _mstvisible="5" %)
405 (((
406 (% _mstvisible="6" %)
407 (((
408 (% _mstvisible="7" %)
409 [[Built-In>>||anchor="H2.4.3Built-inTemperature" _msthash="2224745" _msttexthash="100464" _mstvisible="8"]]
410 )))
411
412 (% _mstvisible="6" %)
413 (((
414 (% _mstvisible="7" %)
415 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224746" _msttexthash="184041" _mstvisible="8"]]
416 )))
417 )))|(% _mstvisible="4" style="width:132px" %)(% _mstvisible="5" %)
418 (((
419 (% _mstvisible="6" %)
420 (((
421 (% _msthash="2224747" _msttexthash="136331" _mstvisible="7" %)
422 BAT Status &
423 )))
424
425 (% _mstvisible="6" %)
426 (((
427 (% _mstvisible="7" %)
428 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224748" _msttexthash="311181" _mstvisible="8"]]
429 )))
430 )))|(% _mstvisible="4" style="width:54px" %)(% _mstvisible="5" %)
431 (((
432 (% _msthash="1817496" _msttexthash="147225" _mstvisible="6" %)
433 Status & Ext
434 )))|(% _mstvisible="4" style="width:64px" %)(% _mstvisible="5" %)
435 (((
436 (% _mstvisible="6" %)
437 (((
438 (% _mstvisible="7" %)
439 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2224749" _msttexthash="227175" _mstvisible="8"]]
440 )))
441 )))
442
443 (% _mstvisible="1" %)
444 * (% _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**
445
446 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:469px" %)
447 (% _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]
448 (% _mstvisible="3" %)|(% _msthash="1230921" _msttexthash="60203" _mstvisible="4" style="width:65px" %)Value|(% _mstvisible="4" style="width:267px" %)(% _mstvisible="5" %)
449 (((
450 (% _msthash="1817497" _msttexthash="128427" _mstvisible="6" %)
451 BAT Status
452
453 (% _msthash="1817498" _msttexthash="472784" _mstvisible="6" %)
454 00(b): Ultra Low ( BAT <= 2.50v)
455
456 (% _msthash="1817499" _msttexthash="483678" _mstvisible="6" %)
457 01(b): Low  (2.50v <=BAT <= 2.55v)
458
459 (% _msthash="1817500" _msttexthash="440791" _mstvisible="6" %)
460 10(b): OK   (2.55v <= BAT <=2.65v)
461
462 (% _msthash="1817501" _msttexthash="334191" _mstvisible="6" %)
463 11(b): Good   (BAT >= 2.65v)
464 )))|(% _mstvisible="4" style="width:134px" %)(% _mstvisible="5" %)
465 (((
466 (% _mstvisible="6" %)
467 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="1817502" _msttexthash="311181" _mstvisible="7"]]
468
469 (% _mstvisible="6" %)
470
471 )))
472
473 * (% _msthash="504956" _msttexthash="245037" _mstvisible="4" %)**Status & Ext Byte**
474
475 (% border="1" cellspacing="8" style="background-color:#ffffcc; color:green; width:520px" %)
476 |(% 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]**
477 |(% 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)
478
479 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
480 * (% 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.
481 * (% 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)
482
483 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
484
485
486 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
487
488 be used to power the external ADC sensor; user can control the power on time for this
489
490 sensor by setting:
491
492 AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)**Time to power this sensor, from 0 ~~ 65535ms**
493
494 For example:
495
496 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
497
498
499 Or use **downlink command A2** to set the same.
500
501 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
502
503 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.
504
505 [[image:image-20220628150112-1.png||height="241" width="285"]]
506
507
508 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
509
510 [[image:image-20220628150714-4.png]]
511
512
513 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.
514
515
516 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
517
518 [[image:image-20220628151005-5.png]]
519
520
521 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
522
523 [[image:image-20220628151056-6.png]]
524
525
526 3) Within range
527
528 [[image:image-20220628151143-7.png]]
529
530
531
532 ==== 2.4.6.4 Ext~=2 TMP117 Sensor （Since Firmware v1.3） ====
533
534
535 [[image:image-20220927095645-1.png||height="534" width="460"]]
536
537
538 **Ext=2,Temperature Sensor(TMP117)：**
539
540 [[image:image-20220906102307-7.png]]
541
542
543 (% style="color:blue" %)**Interrupt Mode and Counting Mode:**
544
545 The external cable NE2 can be use for MOD4 and MOD8
546
547
548
549
550 ==== 2.4.6.5 Ext~=4 Interrupt Mode （Since Firmware v1.3） ====
551
552
553 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will send an uplink when there is a trigger.**
554
555
556 (% style="color:blue" %)**Interrupt Mode can be used to connect to external interrupt sensors such as:**
557
558 **Case 1: Door Sensor.** 3.3v Out for such sensor is just to detect Open/Close.
559
560 In Open State, the power consumption is the same as if there is no probe
561
562 In Close state, the power consumption will be 3uA higher than normal.
563
564 [[image:image-20220906100852-1.png||height="205" width="377"]]
565
566
567 Ext=4,Interrupt Sensor：
568
569 (% border="2" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:512px" %)
570 |(% style="width:117px" %)(((
571 AT+EXT=4,1
572 )))|(% style="width:371px" %)(((
573 Sent uplink packet in both rising and falling interrupt
574 )))
575 |(% style="width:117px" %)(((
576 AT+EXT=4,2
577 )))|(% style="width:371px" %)(((
578 Sent uplink packet only in falling interrupt
579 )))
580 |(% style="width:117px" %)(((
581 AT+EXT=4,3
582 )))|(% style="width:371px" %)(((
583 Sent uplink packet only in rising interrupt
584 )))
585
586 Trigger by falling edge:
587
588 [[image:image-20220906101145-2.png]]
589
590
591 Trigger by raising edge：
592
593 [[image:image-20220906101145-3.png]]
594
595
596
597
598 ==== 2.4.6.6 Ext~=8 Counting Mode（Since Firmware v1.3） ====
599
600
601 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will count for every interrupt and uplink periodically.**
602
603
604 (% 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.
605
606 [[image:image-20220906101320-4.png||height="366" width="698"]]
607
608
609 (% 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
610
611 [[image:image-20220906101320-5.png||height="353" width="696"]]
612
613 Ext=8, Counting Sensor ( 4 bytes)：
614
615 (% border="2" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:381px" %)
616 |(% style="width:138px" %)(((
617 AT+EXT=8,0
618 )))|(% style="width:240px" %)(((
619 Count at falling interrupt
620 )))
621 |(% style="width:138px" %)(((
622 AT+EXT=8,1
623 )))|(% style="width:240px" %)(((
624 Count at rising interrupt
625 )))
626 |(% style="width:138px" %)(((
627 AT+SETCNT=60
628 )))|(% style="width:240px" %)(((
629 Sent current count to 60
630 )))
631
632 [[image:image-20220906101320-6.png]]
633
634
635 (% style="color:blue" %)**A2 downlink Command：**
636
637 A2 02:  Same as AT+EXT=2 (AT+EXT= second byte)
638
639 A2 06 01 F4:  Same as AT+EXT=6,500 (AT+EXT= second byte, third and fourth bytes)
640
641 A2 04 02:  Same as AT+EXT=4,2 (AT+EXT= second byte, third byte)
642
643 A2 08 01 00:  Same as AT+EXT=8,0 (AT+EXT= second byte, fourth byte)
644
645 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)
646
647
648 (% style="color:blue" %)**Modified ATWOOD command for external sensor TMP117 or DS18B20 temperature alarm.**
649
650
651 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
652
653 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
654
655 0): Cancel
656
657 1): Threshold alarm
658
659 2): Fluctuation alarm
660
661
662 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
663
664 (% 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.**
665
666
667 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
668
669 1):  If Alarm Mode is set to 1: Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
670
671 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
672
673
674 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.
675
676 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
677
678 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
679
680
681 (% style="color:blue" %)** Downlink:**
682
683 0xA5 00 ~-~- AT+WMOD=0.
684
685 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 )
686
687 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
688
689 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.
690
691
692
693
694 == 2.5 Show data on Datacake ==
695
696
697 (((
698 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:
699 )))
700
701 (((
702
703 )))
704
705 (((
706 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
707 )))
708
709 (((
710 (% 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.
711 )))
712
713 (((
714
715 )))
716
717 (((
718 Add Datacake:
719 )))
720
721
722 [[image:image-20220523000825-7.png||_mstalt="429884" _mstvisible="3" height="262" width="583"]]
723
724
725
726 Select default key as Access Key:
727
728
729 [[image:image-20220523000825-8.png||_mstalt="430248" _mstvisible="3" height="453" width="406"]]
730
731
732 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/||_mstvisible="2"]]) , add LHT65 device.
733
734
735 [[image:image-20220523000825-9.png||_mstalt="430612" _mstvisible="3" height="366" width="392"]]
736
737
738 [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
739
740
741
742 == 2.6 Datalog Feature ==
743
744
745 (((
746 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.
747 )))
748
749
750
751 === 2.6.1 Ways to get datalog via LoRaWAN ===
752
753
754 There are two methods:
755
756 **Method 1**: IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specified time range.
757
758
759 **Method 2: **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 messages and store the sensor data, and it will send all messages (10s interval) after the network recovery.
760
761 **Note for method 2:**
762
763 * a) LHT65N will do an ACK check for data records sending to make sure every data arrive server.
764 * b) LHT65N will send data in **CONFIRMED Mode** when PNACKMD=1, but LHT65N won't re-transmit the packet if it doesn't get ACK, it will just mark it as a NONE-ACK message. In a future uplink if LHT65N gets a ACK, LHT65N will consider there is a network connection and resend all NONE-ACK Message.
765
766 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
767
768
769 [[image:image-20220703111700-2.png||height="381" width="1119"]]
770
771
772 === 2.6.2 Unix TimeStamp ===
773
774
775 LHT65N uses Unix TimeStamp format based on
776
777
778 [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
779
780
781
782 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
783
784 Below is the converter example
785
786 [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
787
788 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
789
790
791
792 === 2.6.3 Set Device Time ===
793
794
795 (((
796 There are two ways to set device's time:
797 )))
798
799 (((
800 **~1. Through LoRaWAN MAC Command (Default settings)**
801 )))
802
803 (((
804 User need to set SYNCMOD=1 to enable sync time via MAC command.
805 )))
806
807 (((
808 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).
809 )))
810
811 (((
812 (% 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.**
813 )))
814
815 (((
816
817 )))
818
819 (((
820 **2. Manually Set Time**
821 )))
822
823 (((
824 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
825 )))
826
827
828
829 === 2.6.4 Poll sensor value ===
830
831
832 User can poll sensor value based on timestamps from the server. Below is the downlink command.
833
834 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
835
836
837 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.
838
839 For example, downlink command **31 5FC5F350 5FC6 0160 05**
840
841 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
842
843 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
844
845
846
847 === 2.6.5 Datalog Uplink payload ===
848
849
850 (% _msthash="315267" _msttexthash="2245087" _mstvisible="1" %)
851 The Datalog poll reply uplink will use below payload format.
852
853 (% _mstvisible="1" %)
854 (((
855 (% _mstvisible="2" %)
856
857
858 (% _mstvisible="2" %)
859 (% _msthash="506080" _msttexthash="451581" _mstvisible="4" %)**Retrieval data payload**
860 )))
861
862 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
863 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 93px;" %)(% _mstvisible="5" %)
864 (((
865 (% _mstvisible="6" %)
866 (((
867 (% _mstvisible="7" %)
868 (% _msthash="2224750" _msttexthash="161122" _mstvisible="9" %)**Size(bytes)**
869 )))
870 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
871 (((
872 (% _mstvisible="6" %)
873 (((
874 (% _mstvisible="7" %)
875 (% _msthash="2224751" _msttexthash="4550" _mstvisible="9" %)**2**
876 )))
877 )))|=(% _mstvisible="4" style="width: 102px;" %)(% _mstvisible="5" %)
878 (((
879 (% _mstvisible="6" %)
880 (((
881 (% _mstvisible="7" %)
882 (% _msthash="2224752" _msttexthash="4550" _mstvisible="9" %)**2**
883 )))
884 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
885 (((
886 (% _mstvisible="6" %)
887 (((
888 (% _mstvisible="7" %)
889 (% _msthash="2224753" _msttexthash="4550" _mstvisible="9" %)**2**
890 )))
891 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
892 (((
893 (% _mstvisible="6" %)
894 (((
895 (% _mstvisible="7" %)
896 (% _msthash="2224754" _msttexthash="4459" _mstvisible="9" %)**1**
897 )))
898 )))|=(% _mstvisible="4" style="width: 48px;" %)(% _mstvisible="5" %)
899 (((
900 (% _mstvisible="6" %)
901 (((
902 (% _mstvisible="7" %)
903 (% _msthash="2224755" _msttexthash="4732" _mstvisible="9" %)**4**
904 )))
905 )))
906 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:93px" %)(% _mstvisible="5" %)
907 (((
908 (% _mstvisible="6" %)
909 (((
910 (% _mstvisible="7" %)
911 (% _msthash="2224756" _msttexthash="60203" _mstvisible="9" %)**Value**
912 )))
913 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
914 (((
915 (% _mstvisible="6" %)
916 (((
917 (% _mstvisible="7" %)
918 [[External sensor data>>||anchor="H2.4.6Extvalue" _msthash="2224757" _msttexthash="386672" _mstvisible="8"]]
919 )))
920 )))|(% _mstvisible="4" style="width:102px" %)(% _mstvisible="5" %)
921 (((
922 (% _mstvisible="6" %)
923 (((
924 (% _mstvisible="7" %)
925 (((
926 (% _mstvisible="8" %)
927 [[Built In>>||anchor="H2.4.3Built-inTemperature" _msthash="2671864" _msttexthash="91065" _mstvisible="9"]]
928 )))
929 )))
930
931 (% _mstvisible="6" %)
932 (((
933 (% _mstvisible="7" %)
934 (((
935 (% _mstvisible="8" %)
936 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2671865" _msttexthash="184041" _mstvisible="9"]]
937 )))
938 )))
939 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
940 (((
941 (% _mstvisible="6" %)
942 (((
943 (% _mstvisible="7" %)
944 (((
945 (% _mstvisible="8" %)
946 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2671866" _msttexthash="105872" _mstvisible="9"]]
947 )))
948 )))
949
950 (% _mstvisible="6" %)
951 (((
952 (% _mstvisible="7" %)
953 (((
954 (% _mstvisible="8" %)
955 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2671867" _msttexthash="117429" _mstvisible="9"]]
956 )))
957 )))
958 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
959 (((
960 (% _mstvisible="6" %)
961 (((
962 (% _msthash="2224758" _msttexthash="390390" _mstvisible="7" %)
963 Poll message flag & Ext
964 )))
965 )))|(% _mstvisible="4" style="width:48px" %)(% _mstvisible="5" %)
966 (((
967 (% _mstvisible="6" %)
968 (((
969 (% _mstvisible="7" %)
970 (((
971 (% _mstvisible="8" %)
972 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2671868" _msttexthash="227175" _mstvisible="9"]]
973 )))
974 )))
975
976 (% _mstvisible="6" %)
977 (((
978 (% _mstvisible="7" %)
979 (((
980 (% _mstvisible="8" %)
981
982 )))
983 )))
984 )))
985
986 (% _mstvisible="1" %)
987 (% _msthash="315268" _msttexthash="390390" _mstvisible="3" %)**Poll message flag & Ext**
988
989 (% _mstvisible="1" %)
990 (((
991 (% _mstvisible="2" %)
992 (((
993 (% _msthash="736723" _msttexthash="2005003" _mstvisible="3" %)
994 (((
995 [[image:image-20221006192726-1.png||height="112" width="754"]]
996
997 (% class="mark" %)**No ACK Message**(%%): 1: This message means this payload is fromn Uplink Message which doesn't get ACK from the server before ( for [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]] feature)
998
999 (% class="mark" %)**Poll Message Flag**(%%): 1: This message is a poll message reply.
1000
1001
1002 )))
1003 )))
1004 )))
1005
1006 (% _mstvisible="1" %)
1007 * (% _mstvisible="3" %)
1008 (((
1009 (% _mstvisible="4" %)
1010 (((
1011 (% _msthash="1197157" _msttexthash="561548" _mstvisible="5" %)
1012 (((
1013 Poll Message Flag is set to 1.
1014 )))
1015 )))
1016 )))
1017 * (% _mstvisible="3" %)
1018 (((
1019 (% _mstvisible="4" %)
1020 (((
1021 (% _msthash="1197158" _msttexthash="9284964" _mstvisible="5" %)
1022 (((
1023 Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
1024 )))
1025 )))
1026 )))
1027
1028 (% _mstvisible="1" %)
1029 (((
1030 (% _mstvisible="2" %)
1031 (((
1032 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
1033 (((
1034
1035 )))
1036
1037 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
1038 (((
1039 For example, in US915 band, the max payload for different DR is:
1040 )))
1041 )))
1042 )))
1043
1044 (% _mstvisible="1" %)
1045 (((
1046 (% _mstvisible="2" %)
1047 (((
1048 (% _msthash="736725" _msttexthash="1065532" _mstvisible="3" %)
1049 (((
1050 **a) DR0:** max is 11 bytes so one entry of data
1051 )))
1052 )))
1053 )))
1054
1055 (% _mstvisible="1" %)
1056 (((
1057 (% _mstvisible="2" %)
1058 (((
1059 (% _msthash="736726" _msttexthash="3265665" _mstvisible="3" %)
1060 (((
1061 **b) DR1:** max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
1062 )))
1063 )))
1064 )))
1065
1066 (% _mstvisible="1" %)
1067 (((
1068 (% _mstvisible="2" %)
1069 (((
1070 (% _msthash="736727" _msttexthash="1454115" _mstvisible="3" style="text-align: left;" %)
1071 (((
1072 **c) DR2:** total payload includes 11 entries of data
1073 )))
1074 )))
1075 )))
1076
1077 (% _mstvisible="1" %)
1078 (((
1079 (% _mstvisible="2" %)
1080 (((
1081 (% _msthash="736728" _msttexthash="1483924" _mstvisible="3" style="text-align: left;" %)
1082 (((
1083 **d) DR3: **total payload includes 22 entries of data.
1084 )))
1085 )))
1086 )))
1087
1088 (% _mstvisible="1" %)
1089 (((
1090 (% _mstvisible="2" %)
1091 (((
1092 (% _msthash="736729" _msttexthash="5848349" _mstvisible="3" style="text-align: left;" %)
1093 (((
1094 If devise doesn't have any data in the polling time. Device will uplink 11 bytes of 0   
1095 )))
1096 )))
1097 )))
1098
1099
1100 (% _mstvisible="1" style="text-align: left;" %)
1101 (% _msthash="315269" _msttexthash="104767" _mstvisible="3" %)**Example:**
1102
1103 (% _msthash="315270" _msttexthash="913822" _mstvisible="1" style="text-align: left;" %)
1104 If LHT65N has below data inside Flash:
1105
1106 (% _mstvisible="1" %)
1107 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
1108
1109 (% _mstvisible="1" %)
1110 (((
1111 (% _msthash="506081" _msttexthash="1663961" _mstvisible="2" style="text-align: left;" %)
1112 If user sends below downlink command: (% _mstvisible="3" style="background-color:yellow" %)3160065F9760066DA705
1113 )))
1114
1115 (% _mstvisible="1" %)
1116 (((
1117 (% _msthash="506082" _msttexthash="1092494" _mstvisible="2" style="text-align: left;" %)
1118 Where : Start time: 60065F97 = time 21/1/19 04:27:03
1119 )))
1120
1121 (% _mstvisible="1" %)
1122 (((
1123 (% _msthash="506083" _msttexthash="737269" _mstvisible="2" style="text-align: left;" %)
1124 Stop time 60066DA7= time 21/1/19 05:27:(% _msthash="903005" _msttexthash="9672" _mstvisible="2" %)03
1125 )))
1126
1127 (% _mstvisible="1" %)
1128 (((
1129 (% _mstvisible="2" %)
1130
1131 )))
1132
1133 (% _mstvisible="1" %)
1134 (((
1135 (% _msthash="506084" _msttexthash="751218" _mstvisible="2" style="text-align: left;" %)
1136 LHT65N will uplink this payload.
1137 )))
1138
1139 (% _mstvisible="1" %)
1140 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
1141
1142
1143 (% _msthash="315271" _msttexthash="12012546" _mstvisible="1" style="text-align: left;" %)
1144 (((
1145 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
1146 )))
1147
1148 (% _msthash="315237" _msttexthash="1385839" %)
1149 (((
1150 Where the first 11 bytes is for the first entry:
1151 )))
1152
1153 (% _msthash="315238" _msttexthash="274846" %)
1154 (((
1155 7FFF089801464160065F97
1156 )))
1157
1158 (% _msthash="315239" _msttexthash="617435" %)
1159 (((
1160 Ext sensor data=0x7FFF/100=327.67
1161 )))
1162
1163 (% _msthash="315240" _msttexthash="270543" %)
1164 (((
1165 Temp=0x0898/100=22.00
1166 )))
1167
1168 (% _msthash="315241" _msttexthash="211783" %)
1169 (((
1170 Hum=0x0146/10=32.6
1171 )))
1172
1173 (% _msthash="315242" _msttexthash="1569776" %)
1174 (((
1175 poll message flag & Ext=0x41,means reply data,Ext=1
1176 )))
1177
1178 (% _msthash="315243" _msttexthash="1120509" %)
1179 (((
1180 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
1181 )))
1182
1183
1184
1185 == 2.7 Alarm Mode ==
1186
1187
1188 (((
1189 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.
1190 )))
1191
1192 (((
1193 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
1194
1195 === **2.7.1 ALARM MODE ( Since v1.3.1 firmware)** ===
1196
1197 (((
1198 (% class="box infomessage" %)
1199 (((
1200 **AT+WMOD=3,**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
1201
1202 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1203
1204 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1205
1206 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
1207
1208 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1209
1210 **AT+LEDALARM=1** :       Enable LED visual Alarm.
1211 )))
1212 )))
1213
1214
1215
1216 )))
1217
1218 (((
1219 === **2.7.2 ALARM MODE ( Before v1.3.1 firmware)** ===
1220 )))
1221
1222 (% _mstvisible="1" class="box infomessage" %)
1223 (((
1224 (((
1225 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
1226 )))
1227
1228 (((
1229 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1230 )))
1231
1232 (((
1233 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1234 )))
1235
1236 (((
1237 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
1238 )))
1239
1240 (((
1241 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1242 )))
1243 )))
1244
1245 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1246
1247 Total bytes: 8 bytes
1248
1249 **Example:**AA0100010001003C
1250
1251 WMOD=01
1252
1253 CITEMP=0001
1254
1255 TEMPlow=0001
1256
1257 TEMPhigh=003C
1258
1259
1260
1261 == 2.8 LED Indicator ==
1262
1263
1264 The LHT65 has a triple color LED which for easy showing different stage .
1265
1266 While user press ACT button, the LED will work as per LED status with ACT button.
1267
1268 In a normal working state:
1269
1270 * For each uplink, the BLUE LED or RED LED will blink once.
1271 BLUE LED when external sensor is connected.
1272 * RED LED when external sensor is not connected
1273 * For each success downlink, the PURPLE LED will blink once
1274
1275 == 2.9 installation ==
1276
1277
1278 (% _mstvisible="1" %)
1279 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
1280
1281
1282
1283 = 3. Sensors and Accessories =
1284
1285
1286 == 3.1 E2 Extension Cable ==
1287
1288
1289 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1290
1291
1292 **1m long breakout cable for LHT65N. Features:**
1293
1294 * (((
1295 Use for AT Command， works for both LHT52/LHT65N
1296 )))
1297 * (((
1298 Update firmware for LHT65N, works for both LHT52/LHT65N
1299 )))
1300 * (((
1301 Supports ADC mode to monitor external ADC
1302 )))
1303 * (((
1304 Supports Interrupt mode
1305 )))
1306 * (((
1307 Exposed All pins from the LHT65N Type-C connector.
1308
1309
1310
1311 )))
1312
1313 [[image:image-20220619092421-3.png||height="371" width="529"]]
1314
1315
1316
1317
1318 == 3.2 E3 Temperature Probe ==
1319
1320
1321 [[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"]]
1322
1323
1324 Temperature sensor with 2 meters cable long
1325
1326 * Resolution: 0.0625 °C
1327 * ±0.5°C accuracy from -10°C to +85°C
1328 * ±2°C accuracy from -55°C to +125°C
1329 * Operating Range: -40 ~~ 125 °C
1330 * Working voltage 2.35v ~~ 5v
1331
1332 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1333
1334
1335 (((
1336 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1337 )))
1338
1339 * (((
1340 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1341 )))
1342
1343 * (((
1344 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1345 )))
1346
1347 (((
1348 There are two kinds of commands to configure LHT65N, they are:
1349 )))
1350
1351 * (((
1352 (% style="color:#4f81bd" %)**General Commands**.
1353 )))
1354
1355 (((
1356 These commands are to configure:
1357 )))
1358
1359 1. (((
1360 General system settings like: uplink interval.
1361 )))
1362 1. (((
1363 LoRaWAN protocol & radio-related commands.
1364 )))
1365
1366 (((
1367 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]]
1368 )))
1369
1370 * (((
1371 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1372 )))
1373
1374 (((
1375 These commands are only valid for LHT65N, as below:
1376 )))
1377
1378
1379
1380 == 4.1 Set Transmit Interval Time ==
1381
1382
1383 Feature: Change LoRaWAN End Node Transmit Interval.
1384
1385
1386 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1387
1388 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
1389
1390
1391 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1392
1393 Format: Command Code (0x01) followed by 3 bytes time value.
1394
1395 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1396
1397 * **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1398
1399 * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1400
1401 == 4.2 Set External Sensor Mode ==
1402
1403
1404 Feature: Change External Sensor Mode.
1405
1406
1407 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1408
1409 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1410
1411
1412 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1413
1414 Total bytes: 2 ~~ 5 bytes
1415
1416 **Example:**
1417
1418 * 0xA201: Set external sensor type to E1
1419
1420 * 0xA209: Same as AT+EXT=9
1421
1422 * 0xA20702003c: Same as AT+SETCNT=60
1423
1424 == 4.3 Enable/Disable uplink Temperature probe ID ==
1425
1426
1427 (((
1428 Feature: If PID is enabled, device will send the temperature probe ID on:
1429 )))
1430
1431 * (((
1432 First Packet after OTAA Join
1433 )))
1434 * (((
1435 Every 24 hours since the first packet.
1436 )))
1437
1438 (((
1439 PID is default set to disable (0)
1440
1441
1442 )))
1443
1444 (% style="color:#4f81bd" %)**AT Command:**
1445
1446 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1447
1448
1449 (% style="color:#4f81bd" %)**Downlink Command:**
1450
1451 * **0xA800**  **~-~->** AT+PID=0
1452 * **0xA801**     **~-~->** AT+PID=1
1453
1454 == 4.4 Set Password ==
1455
1456
1457 Feature: Set device password, max 9 digits
1458
1459
1460 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1461
1462 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1463
1464
1465 (% style="color:#4f81bd" %)**Downlink Command:**
1466
1467 No downlink command for this feature.
1468
1469
1470
1471 == 4.5 Quit AT Command ==
1472
1473
1474 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1475
1476
1477 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1478
1479 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1480
1481
1482 (% style="color:#4f81bd" %)**Downlink Command:**
1483
1484 No downlink command for this feature.
1485
1486
1487
1488 == 4.6 Set to sleep mode ==
1489
1490
1491 Feature: Set device to sleep mode
1492
1493 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1494 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1495
1496 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1497
1498 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1499
1500
1501 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1502
1503 * There is no downlink command to set to Sleep mode.
1504
1505 == 4.7 Set system time ==
1506
1507
1508 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1509
1510
1511 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1512
1513 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1514
1515
1516 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1517
1518 0x306007806000  ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1519
1520
1521
1522 == 4.8 Set Time Sync Mode ==
1523
1524
1525 (((
1526 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1527 )))
1528
1529 (((
1530 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.
1531
1532
1533 )))
1534
1535 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1536
1537 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1538
1539
1540 (% style="color:#4f81bd" %)**Downlink Command:**
1541
1542 0x28 01  ~/~/  Same As AT+SYNCMOD=1
1543 0x28 00  ~/~/  Same As AT+SYNCMOD=0
1544
1545
1546
1547 == 4.9 Set Time Sync Interval ==
1548
1549
1550 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1551
1552
1553 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1554
1555 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1556
1557
1558 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1559
1560 **0x29 0A**  ~/~/ Same as AT+SYNCTDC=0x0A
1561
1562
1563
1564 == 4.10 Print data entries base on page. ==
1565
1566
1567 Feature: Print the sector data from start page to stop page (max is 416 pages).
1568
1569
1570 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1571
1572 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1573
1574
1575 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1576
1577 No downlink commands for feature
1578
1579
1580
1581 == 4.11 Print last few data entries. ==
1582
1583
1584 Feature: Print the last few data entries
1585
1586
1587 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1588
1589 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1590
1591
1592 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1593
1594 No downlink commands for feature
1595
1596
1597
1598 == 4.12 Clear Flash Record ==
1599
1600
1601 Feature: Clear flash storage for data log feature.
1602
1603
1604 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1605
1606 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1607
1608
1609 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1610
1611 * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1612
1613 == 4.13 Auto Send None-ACK messages ==
1614
1615
1616 (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
1617 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.
1618
1619
1620 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1621
1622 (% _msthash="315396" _msttexthash="734682" _mstvisible="1" %)
1623 The default factory setting is 0
1624
1625 (% _mstvisible="1" border="1" style="background-color:#ffffcc; color:green; width:450px" %)
1626 (% _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**
1627 (% _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
1628
1629 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1630
1631 * Example: 0x3401 ~/~/  Same as AT+PNACKMD=1
1632
1633 = 5. Battery & How to replace =
1634
1635
1636 == 5.1 Battery Type ==
1637
1638
1639 (((
1640 (((
1641 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.
1642 )))
1643 )))
1644
1645 (((
1646
1647 )))
1648
1649 (((
1650 (((
1651 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1652 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1653 )))
1654 )))
1655
1656 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1657
1658
1659
1660 == 5.2 Replace Battery ==
1661
1662
1663 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.
1664
1665 [[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"]]
1666
1667
1668 == 5.3 Battery Life Analyze ==
1669
1670
1671 (((
1672 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:
1673 [[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]]
1674 )))
1675
1676 (((
1677
1678 )))
1679
1680 (((
1681 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]]
1682 )))
1683
1684
1685
1686 = 6. FAQ =
1687
1688
1689 == 6.1 How to use AT Command? ==
1690
1691
1692 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.
1693
1694 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1695
1696
1697 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1698
1699 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1700 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1701 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1702
1703 (((
1704 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.
1705 )))
1706
1707
1708 Input password and ATZ to activate LHT65N,As shown below:
1709
1710 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1711
1712
1713 (% _msthash="506066" _msttexthash="544869" %)
1714 AT Command List is as below:
1715
1716 (% _msthash="506067" _msttexthash="361920" %)
1717 AT+<CMD>? :  Help on <CMD>
1718
1719 (% _msthash="506068" _msttexthash="243061" %)
1720 AT+<CMD> :  Run <CMD>
1721
1722 (% _msthash="506069" _msttexthash="704197" %)
1723 AT+<CMD>=<value> :  Set the value
1724
1725 (% _msthash="506070" _msttexthash="455676" %)
1726 AT+<CMD>=? :  Get the value
1727
1728 (% _msthash="506071" _msttexthash="670553" %)
1729 AT+DEBUG:  Set more info output
1730
1731 (% _msthash="506072" _msttexthash="485888" %)
1732 ATZ:  Trig a reset of the MCU
1733
1734 (% _msthash="506073" _msttexthash="2068872" %)
1735 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1736
1737 (% _msthash="506074" _msttexthash="689169" %)
1738 AT+DEUI:  Get or Set the Device EUI
1739
1740 (% _msthash="506075" _msttexthash="960414" %)
1741 AT+DADDR:  Get or Set the Device Address
1742
1743 (% _msthash="506076" _msttexthash="1079897" %)
1744 AT+APPKEY:  Get or Set the Application Key
1745
1746 (% _msthash="506077" _msttexthash="1326143" %)
1747 AT+NWKSKEY:  Get or Set the Network Session Key
1748
1749 (% _msthash="506078" _msttexthash="1573000" %)
1750 AT+APPSKEY:  Get or Set the Application Session Key
1751
1752 (% _msthash="506079" _msttexthash="1041729" %)
1753 AT+APPEUI:  Get or Set the Application EUI
1754
1755 (% _msthash="506080" _msttexthash="2104206" %)
1756 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1757
1758 (% _msthash="506081" _msttexthash="3369288" %)
1759 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1760
1761 (% _msthash="506082" _msttexthash="1894529" %)
1762 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1763
1764 (% _msthash="506083" _msttexthash="3864172" %)
1765 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1766
1767 (% _msthash="506084" _msttexthash="1712204" %)
1768 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1769
1770 (% _msthash="506085" _msttexthash="1281202" %)
1771 AT+RX2FQ:  Get or Set the Rx2 window frequency
1772
1773 (% _msthash="506086" _msttexthash="2796781" %)
1774 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1775
1776 (% _msthash="506087" _msttexthash="3285165" %)
1777 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1778
1779 (% _msthash="506088" _msttexthash="3286179" %)
1780 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1781
1782 (% _msthash="506089" _msttexthash="4703803" %)
1783 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1784
1785 (% _msthash="506090" _msttexthash="4704999" %)
1786 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1787
1788 (% _msthash="506091" _msttexthash="1528683" %)
1789 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1790
1791 (% _msthash="506092" _msttexthash="757185" %)
1792 AT+NWKID:  Get or Set the Network ID
1793
1794 (% _msthash="506093" _msttexthash="1156597" %)
1795 AT+FCU:  Get or Set the Frame Counter Uplink
1796
1797 (% _msthash="506094" _msttexthash="1273987" %)
1798 AT+FCD:  Get or Set the Frame Counter Downlink
1799
1800 (% _msthash="506095" _msttexthash="859222" %)
1801 AT+CLASS:  Get or Set the Device Class
1802
1803 (% _msthash="506096" _msttexthash="384852" %)
1804 AT+JOIN:  Join network
1805
1806 (% _msthash="506097" _msttexthash="548626" %)
1807 AT+NJS:  Get the join status
1808
1809 (% _msthash="506098" _msttexthash="2546206" %)
1810 AT+SENDB:  Send hexadecimal data along with the application port
1811
1812 (% _msthash="506099" _msttexthash="1932307" %)
1813 AT+SEND:  Send text data along with the application port
1814
1815 (% _msthash="506100" _msttexthash="3560557" %)
1816 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1817
1818 (% _msthash="506101" _msttexthash="1429701" %)
1819 AT+RECV:  Print last received data in raw format
1820
1821 (% _msthash="506102" _msttexthash="1735981" %)
1822 AT+VER:  Get current image version and Frequency Band
1823
1824 (% _msthash="506103" _msttexthash="1189474" %)
1825 AT+CFM:  Get or Set the confirmation mode (0-1)
1826
1827 (% _msthash="506104" _msttexthash="1718210" %)
1828 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1829
1830 (% _msthash="506105" _msttexthash="1339403" %)
1831 AT+SNR:  Get the SNR of the last received packet
1832
1833 (% _msthash="506106" _msttexthash="1452009" %)
1834 AT+RSSI:  Get the RSSI of the last received packet
1835
1836 (% _msthash="506107" _msttexthash="2768142" %)
1837 AT+TDC:  Get or set the application data transmission interval in ms
1838
1839 (% _msthash="506108" _msttexthash="1083914" %)
1840 AT+PORT:  Get or set the application port
1841
1842 (% _msthash="506109" _msttexthash="622440" %)
1843 AT+DISAT:  Disable AT commands
1844
1845 (% _msthash="506110" _msttexthash="868361" %)
1846 AT+PWORD: Set password, max 9 digits
1847
1848 (% _msthash="506111" _msttexthash="2210299" %)
1849 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1850
1851 (% _msthash="506112" _msttexthash="2113462" %)
1852 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1853
1854 (% _msthash="506113" _msttexthash="2087423" %)
1855 AT+PDTA:  Print the sector data from start page to stop page
1856
1857 (% _msthash="506114" _msttexthash="1063127" %)
1858 AT+PLDTA:  Print the last few sets of data
1859
1860 (% _msthash="506115" _msttexthash="1999426" %)
1861 AT+CLRDTA:  Clear the storage, record position back to 1st
1862
1863 (% _msthash="506116" _msttexthash="442130" %)
1864 AT+SLEEP:  Set sleep mode
1865
1866 (% _msthash="506117" _msttexthash="1080222" %)
1867 AT+EXT:  Get or Set external sensor model
1868
1869 (% _msthash="506118" _msttexthash="1309490" %)
1870 AT+BAT:  Get the current battery voltage in mV
1871
1872 (% _msthash="506119" _msttexthash="813891" %)
1873 AT+CFG:  Print all configurations
1874
1875 (% _msthash="506120" _msttexthash="551707" %)
1876 AT+WMOD:  Get or Set Work Mode
1877
1878 (% _msthash="506121" _msttexthash="2631499" %)
1879 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1880
1881 (% _msthash="506122" _msttexthash="3907150" %)
1882 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1883
1884 (% _msthash="506123" _msttexthash="854620" %)
1885 AT+SETCNT:  Set the count at present
1886
1887 (% _msthash="506124" _msttexthash="2554877" %)
1888 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1889
1890 (% _msthash="506125" _msttexthash="771849" %)
1891 AT+RPL:  Get or set response level
1892
1893 (% _msthash="506126" _msttexthash="1484314" %)
1894 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1895
1896 (% _msthash="506127" _msttexthash="741728" %)
1897 AT+LEAPSEC:  Get or Set Leap Second
1898
1899 (% _msthash="506128" _msttexthash="1694017" %)
1900 AT+SYNCMOD:  Get or Set time synchronization method
1901
1902 (% _msthash="506129" _msttexthash="2235948" %)
1903 AT+SYNCTDC:  Get or set time synchronization interval in day
1904
1905 (% _msthash="506130" _msttexthash="425542" %)
1906 AT+PID:  Get or set the PID
1907
1908
1909
1910 == 6.2 Where to use AT commands and Downlink commands ==
1911
1912
1913 **AT commands：**
1914
1915 [[image:image-20220620153708-1.png||height="603" width="723"]]
1916
1917
1918 **Downlink commands:**
1919
1920
1921
1922 (% style="color:blue" %)**TTN:**
1923
1924 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1925
1926
1927
1928 (% style="color:blue" %)**Helium：**
1929
1930 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1931
1932
1933
1934 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1935
1936
1937 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1938
1939
1940 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1941
1942
1943
1944 (% style="color:blue" %)**Aws:**
1945
1946 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1947
1948
1949
1950 == 6.3 How to change the uplink interval？ ==
1951
1952
1953 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);"]]
1954
1955
1956
1957 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1958
1959
1960 [[image:image-20220615153355-1.png]]
1961
1962 [[image:1655802313617-381.png]]
1963
1964
1965 (((
1966 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.
1967 )))
1968
1969
1970 Input password and ATZ to activate LHT65N,As shown below:
1971
1972 [[image:image-20220615154519-3.png||height="672" width="807"]]
1973
1974
1975
1976 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1977
1978
1979 [[image:image-20220615153355-1.png]]
1980
1981
1982 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1983
1984 [[image:image-20220615170542-5.png]]
1985
1986
1987
1988 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1989
1990 (% _msthash="506146" _msttexthash="52173160" %)
1991 First connect the four lines；(% style="display:none" %)
1992
1993 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1994
1995
1996 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1997
1998 [[image:image-20220621170938-2.png]]
1999
2000
2001
2002 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
2003
2004 [[image:image-20220615171334-6.png]]
2005
2006
2007 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
2008
2009
2010 When this interface appears, it indicates that the download has been completed.
2011
2012 [[image:image-20220620160723-8.png]]
2013
2014
2015 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
2016
2017
2018
2019 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
2020
2021
2022 [[image:image-20220623110706-1.png]]
2023
2024
2025 [[image:image-20220623112117-4.png||height="459" width="343"]]
2026
2027
2028 (((
2029 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.
2030 )))
2031
2032
2033 Input password and ATZ to activate LHT65N,As shown below:
2034
2035 [[image:image-20220615154519-3.png||height="672" width="807"]]
2036
2037
2038
2039 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
2040
2041
2042 [[image:image-20220623110706-1.png]]
2043
2044
2045 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
2046
2047 [[image:image-20220615170542-5.png]]
2048
2049
2050
2051 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
2052
2053 (% _msthash="506146" _msttexthash="52173160" %)
2054 First connect the four lines；
2055
2056 (% _msthash="506146" _msttexthash="52173160" %)
2057 [[image:image-20220623113959-5.png||height="528" width="397"]]
2058
2059 (% _msthash="506146" _msttexthash="52173160" %)
2060 Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
2061
2062
2063
2064 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
2065
2066 [[image:image-20220615171334-6.png]]
2067
2068
2069 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
2070
2071
2072 When this interface appears, it indicates that the download has been completed.
2073
2074 [[image:image-20220620160723-8.png]]
2075
2076
2077 Finally,restart reset device again
2078
2079
2080
2081 = 7. Order Info =
2082
2083
2084 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
2085
2086 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
2087
2088 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
2089 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
2090 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
2091 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
2092 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
2093 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
2094 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
2095 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
2096
2097 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
2098
2099 * (% style="color:red" %)**E3**(%%): External Temperature Probe
2100
2101 = 8. Packing Info =
2102
2103
2104 **Package Includes**:
2105
2106 * LHT65N Temperature & Humidity Sensor x 1
2107 * Optional external sensor
2108
2109 **Dimension and weight**:
2110
2111 * Device Size:  10 x 10 x 3.5 cm
2112 * Device Weight: 120.5g
2113
2114 = 9. Reference material =
2115
2116
2117 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
2118
2119 = 10. FCC Warning =
2120
2121
2122 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
2123
2124 (1) This device may not cause harmful interference；
2125
2126 (2) this device must accept any interference received, including interference that may cause undesired operation.
2127
2128
2129

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