Version 207.1 by Edwin Chen on 2022/10/18 09:59
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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
484 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
485
486
487 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
488
489 be used to power the external ADC sensor; user can control the power on time for this
490
491 sensor by setting:
492
493 AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)**Time to power this sensor, from 0 ~~ 65535ms**
494
495 For example:
496
497 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
498
499
500 Or use **downlink command A2** to set the same.
501
502 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
503
504 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.
505
506 [[image:image-20220628150112-1.png||height="241" width="285"]]
507
508
509 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
510
511 [[image:image-20220628150714-4.png]]
512
513
514 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.
515
516
517 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
518
519 [[image:image-20220628151005-5.png]]
520
521
522 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
523
524 [[image:image-20220628151056-6.png]]
525
526
527 3) Within range
528
529 [[image:image-20220628151143-7.png]]
530
531
532
533 ==== 2.4.6.4 Ext~=2 TMP117 Sensor （Since Firmware v1.3） ====
534
535
536 [[image:image-20220927095645-1.png||height="534" width="460"]]
537
538
539 **Ext=2,Temperature Sensor(TMP117)：**
540
541 [[image:image-20220906102307-7.png]]
542
543
544 (% style="color:blue" %)**Interrupt Mode and Counting Mode:**
545
546 The external cable NE2 can be use for MOD4 and MOD8
547
548
549
550
551 ==== 2.4.6.5 Ext~=4 Interrupt Mode （Since Firmware v1.3） ====
552
553
554 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will send an uplink when there is a trigger.**
555
556
557 (% style="color:blue" %)**Interrupt Mode can be used to connect to external interrupt sensors such as:**
558
559 **Case 1: Door Sensor.** 3.3v Out for such sensor is just to detect Open/Close.
560
561 In Open State, the power consumption is the same as if there is no probe
562
563 In Close state, the power consumption will be 3uA higher than normal.
564
565 [[image:image-20220906100852-1.png||height="205" width="377"]]
566
567
568 Ext=4,Interrupt Sensor：
569
570 (% border="2" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:512px" %)
571 |(% style="width:117px" %)(((
572 AT+EXT=4,1
573 )))|(% style="width:371px" %)(((
574 Sent uplink packet in both rising and falling interrupt
575 )))
576 |(% style="width:117px" %)(((
577 AT+EXT=4,2
578 )))|(% style="width:371px" %)(((
579 Sent uplink packet only in falling interrupt
580 )))
581 |(% style="width:117px" %)(((
582 AT+EXT=4,3
583 )))|(% style="width:371px" %)(((
584 Sent uplink packet only in rising interrupt
585 )))
586
587 Trigger by falling edge:
588
589 [[image:image-20220906101145-2.png]]
590
591
592 Trigger by raising edge：
593
594 [[image:image-20220906101145-3.png]]
595
596
597
598
599 ==== 2.4.6.6 Ext~=8 Counting Mode（Since Firmware v1.3） ====
600
601
602 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will count for every interrupt and uplink periodically.**
603
604
605 (% 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.
606
607 [[image:image-20220906101320-4.png||height="366" width="698"]]
608
609
610 (% 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
611
612 [[image:image-20220906101320-5.png||height="353" width="696"]]
613
614 Ext=8, Counting Sensor ( 4 bytes)：
615
616 (% border="2" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:381px" %)
617 |(% style="width:138px" %)(((
618 AT+EXT=8,0
619 )))|(% style="width:240px" %)(((
620 Count at falling interrupt
621 )))
622 |(% style="width:138px" %)(((
623 AT+EXT=8,1
624 )))|(% style="width:240px" %)(((
625 Count at rising interrupt
626 )))
627 |(% style="width:138px" %)(((
628 AT+SETCNT=60
629 )))|(% style="width:240px" %)(((
630 Sent current count to 60
631 )))
632
633 [[image:image-20220906101320-6.png]]
634
635
636 (% style="color:blue" %)**A2 downlink Command：**
637
638 A2 02:  Same as AT+EXT=2 (AT+EXT= second byte)
639
640 A2 06 01 F4:  Same as AT+EXT=6,500 (AT+EXT= second byte, third and fourth bytes)
641
642 A2 04 02:  Same as AT+EXT=4,2 (AT+EXT= second byte, third byte)
643
644 A2 08 01 00:  Same as AT+EXT=8,0 (AT+EXT= second byte, fourth byte)
645
646 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)
647
648
649 (% style="color:blue" %)**Modified ATWOOD command for external sensor TMP117 or DS18B20 temperature alarm.**
650
651
652 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
653
654 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
655
656 0): Cancel
657
658 1): Threshold alarm
659
660 2): Fluctuation alarm
661
662
663 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
664
665 (% 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.**
666
667
668 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
669
670 1):  If Alarm Mode is set to 1: Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
671
672 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
673
674
675 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.
676
677 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
678
679 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
680
681
682 (% style="color:blue" %)** Downlink:**
683
684 0xA5 00 ~-~- AT+WMOD=0.
685
686 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 )
687
688 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
689
690 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.
691
692
693
694
695 == 2.5 Show data on Datacake ==
696
697
698 (((
699 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:
700 )))
701
702 (((
703
704 )))
705
706 (((
707 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
708 )))
709
710 (((
711 (% 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.
712 )))
713
714 (((
715
716 )))
717
718 (((
719 Add Datacake:
720 )))
721
722
723 [[image:image-20220523000825-7.png||_mstalt="429884" _mstvisible="3" height="262" width="583"]]
724
725
726
727 Select default key as Access Key:
728
729
730 [[image:image-20220523000825-8.png||_mstalt="430248" _mstvisible="3" height="453" width="406"]]
731
732
733 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/||_mstvisible="2"]]) , add LHT65 device.
734
735
736 [[image:image-20220523000825-9.png||_mstalt="430612" _mstvisible="3" height="366" width="392"]]
737
738
739 [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
740
741
742
743 == 2.6 Datalog Feature ==
744
745
746 (((
747 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.
748 )))
749
750
751
752 === 2.6.1 Ways to get datalog via LoRaWAN ===
753
754
755 There are two methods:
756
757 **Method 1**: IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specified time range.
758
759
760 **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.
761
762 **Note for method 2:**
763
764 * a) LHT65N will do an ACK check for data records sending to make sure every data arrive server.
765 * 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.
766
767 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
768
769
770 [[image:image-20220703111700-2.png||height="381" width="1119"]]
771
772
773 === 2.6.2 Unix TimeStamp ===
774
775
776 LHT65N uses Unix TimeStamp format based on
777
778
779 [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
780
781
782
783 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
784
785 Below is the converter example
786
787 [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
788
789 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
790
791
792
793 === 2.6.3 Set Device Time ===
794
795
796 (((
797 There are two ways to set device's time:
798 )))
799
800 (((
801 **~1. Through LoRaWAN MAC Command (Default settings)**
802 )))
803
804 (((
805 User need to set SYNCMOD=1 to enable sync time via MAC command.
806 )))
807
808 (((
809 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).
810 )))
811
812 (((
813 (% 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.**
814 )))
815
816 (((
817
818 )))
819
820 (((
821 **2. Manually Set Time**
822 )))
823
824 (((
825 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
826 )))
827
828
829
830 === 2.6.4 Poll sensor value ===
831
832
833 User can poll sensor value based on timestamps from the server. Below is the downlink command.
834
835 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
836
837
838 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.
839
840 For example, downlink command **31 5FC5F350 5FC6 0160 05**
841
842 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
843
844 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
845
846
847
848 === 2.6.5 Datalog Uplink payload ===
849
850
851 (% _msthash="315267" _msttexthash="2245087" _mstvisible="1" %)
852 The Datalog poll reply uplink will use below payload format.
853
854 (% _mstvisible="1" %)
855 (((
856 (% _mstvisible="2" %)
857
858
859 (% _mstvisible="2" %)
860 (% _msthash="506080" _msttexthash="451581" _mstvisible="4" %)**Retrieval data payload**
861 )))
862
863 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
864 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 93px;" %)(% _mstvisible="5" %)
865 (((
866 (% _mstvisible="6" %)
867 (((
868 (% _mstvisible="7" %)
869 (% _msthash="2224750" _msttexthash="161122" _mstvisible="9" %)**Size(bytes)**
870 )))
871 )))|=(% _mstvisible="4" style="width: 71px;" %)(% _mstvisible="5" %)
872 (((
873 (% _mstvisible="6" %)
874 (((
875 (% _mstvisible="7" %)
876 (% _msthash="2224751" _msttexthash="4550" _mstvisible="9" %)**2**
877 )))
878 )))|=(% _mstvisible="4" style="width: 102px;" %)(% _mstvisible="5" %)
879 (((
880 (% _mstvisible="6" %)
881 (((
882 (% _mstvisible="7" %)
883 (% _msthash="2224752" _msttexthash="4550" _mstvisible="9" %)**2**
884 )))
885 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
886 (((
887 (% _mstvisible="6" %)
888 (((
889 (% _mstvisible="7" %)
890 (% _msthash="2224753" _msttexthash="4550" _mstvisible="9" %)**2**
891 )))
892 )))|=(% _mstvisible="4" style="width: 86px;" %)(% _mstvisible="5" %)
893 (((
894 (% _mstvisible="6" %)
895 (((
896 (% _mstvisible="7" %)
897 (% _msthash="2224754" _msttexthash="4459" _mstvisible="9" %)**1**
898 )))
899 )))|=(% _mstvisible="4" style="width: 48px;" %)(% _mstvisible="5" %)
900 (((
901 (% _mstvisible="6" %)
902 (((
903 (% _mstvisible="7" %)
904 (% _msthash="2224755" _msttexthash="4732" _mstvisible="9" %)**4**
905 )))
906 )))
907 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:93px" %)(% _mstvisible="5" %)
908 (((
909 (% _mstvisible="6" %)
910 (((
911 (% _mstvisible="7" %)
912 (% _msthash="2224756" _msttexthash="60203" _mstvisible="9" %)**Value**
913 )))
914 )))|(% _mstvisible="4" style="width:71px" %)(% _mstvisible="5" %)
915 (((
916 (% _mstvisible="6" %)
917 (((
918 (% _mstvisible="7" %)
919 [[External sensor data>>||anchor="H2.4.6Extvalue" _msthash="2224757" _msttexthash="386672" _mstvisible="8"]]
920 )))
921 )))|(% _mstvisible="4" style="width:102px" %)(% _mstvisible="5" %)
922 (((
923 (% _mstvisible="6" %)
924 (((
925 (% _mstvisible="7" %)
926 (((
927 (% _mstvisible="8" %)
928 [[Built In>>||anchor="H2.4.3Built-inTemperature" _msthash="2671864" _msttexthash="91065" _mstvisible="9"]]
929 )))
930 )))
931
932 (% _mstvisible="6" %)
933 (((
934 (% _mstvisible="7" %)
935 (((
936 (% _mstvisible="8" %)
937 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2671865" _msttexthash="184041" _mstvisible="9"]]
938 )))
939 )))
940 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
941 (((
942 (% _mstvisible="6" %)
943 (((
944 (% _mstvisible="7" %)
945 (((
946 (% _mstvisible="8" %)
947 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2671866" _msttexthash="105872" _mstvisible="9"]]
948 )))
949 )))
950
951 (% _mstvisible="6" %)
952 (((
953 (% _mstvisible="7" %)
954 (((
955 (% _mstvisible="8" %)
956 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2671867" _msttexthash="117429" _mstvisible="9"]]
957 )))
958 )))
959 )))|(% _mstvisible="4" style="width:86px" %)(% _mstvisible="5" %)
960 (((
961 (% _mstvisible="6" %)
962 (((
963 (% _msthash="2224758" _msttexthash="390390" _mstvisible="7" %)
964 Poll message flag & Ext
965 )))
966 )))|(% _mstvisible="4" style="width:48px" %)(% _mstvisible="5" %)
967 (((
968 (% _mstvisible="6" %)
969 (((
970 (% _mstvisible="7" %)
971 (((
972 (% _mstvisible="8" %)
973 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2671868" _msttexthash="227175" _mstvisible="9"]]
974 )))
975 )))
976
977 (% _mstvisible="6" %)
978 (((
979 (% _mstvisible="7" %)
980 (((
981 (% _mstvisible="8" %)
982
983 )))
984 )))
985 )))
986
987 (% _mstvisible="1" %)
988 (% _msthash="315268" _msttexthash="390390" _mstvisible="3" %)**Poll message flag & Ext**
989
990 (% _mstvisible="1" %)
991 (((
992 (% _mstvisible="2" %)
993 (((
994 (% _msthash="736723" _msttexthash="2005003" _mstvisible="3" %)
995 (((
996 [[image:image-20221006192726-1.png||height="112" width="754"]]
997
998 (% 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)
999
1000 (% class="mark" %)**Poll Message Flag**(%%): 1: This message is a poll message reply.
1001
1002
1003 )))
1004 )))
1005 )))
1006
1007 (% _mstvisible="1" %)
1008 * (% _mstvisible="3" %)
1009 (((
1010 (% _mstvisible="4" %)
1011 (((
1012 (% _msthash="1197157" _msttexthash="561548" _mstvisible="5" %)
1013 (((
1014 Poll Message Flag is set to 1.
1015 )))
1016 )))
1017 )))
1018 * (% _mstvisible="3" %)
1019 (((
1020 (% _mstvisible="4" %)
1021 (((
1022 (% _msthash="1197158" _msttexthash="9284964" _mstvisible="5" %)
1023 (((
1024 Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
1025 )))
1026 )))
1027 )))
1028
1029 (% _mstvisible="1" %)
1030 (((
1031 (% _mstvisible="2" %)
1032 (((
1033 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
1034 (((
1035
1036 )))
1037
1038 (% _msthash="736724" _msttexthash="2242344" _mstvisible="3" %)
1039 (((
1040 For example, in US915 band, the max payload for different DR is:
1041 )))
1042 )))
1043 )))
1044
1045 (% _mstvisible="1" %)
1046 (((
1047 (% _mstvisible="2" %)
1048 (((
1049 (% _msthash="736725" _msttexthash="1065532" _mstvisible="3" %)
1050 (((
1051 **a) DR0:** max is 11 bytes so one entry of data
1052 )))
1053 )))
1054 )))
1055
1056 (% _mstvisible="1" %)
1057 (((
1058 (% _mstvisible="2" %)
1059 (((
1060 (% _msthash="736726" _msttexthash="3265665" _mstvisible="3" %)
1061 (((
1062 **b) DR1:** max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
1063 )))
1064 )))
1065 )))
1066
1067 (% _mstvisible="1" %)
1068 (((
1069 (% _mstvisible="2" %)
1070 (((
1071 (% _msthash="736727" _msttexthash="1454115" _mstvisible="3" style="text-align: left;" %)
1072 (((
1073 **c) DR2:** total payload includes 11 entries of data
1074 )))
1075 )))
1076 )))
1077
1078 (% _mstvisible="1" %)
1079 (((
1080 (% _mstvisible="2" %)
1081 (((
1082 (% _msthash="736728" _msttexthash="1483924" _mstvisible="3" style="text-align: left;" %)
1083 (((
1084 **d) DR3: **total payload includes 22 entries of data.
1085 )))
1086 )))
1087 )))
1088
1089 (% _mstvisible="1" %)
1090 (((
1091 (% _mstvisible="2" %)
1092 (((
1093 (% _msthash="736729" _msttexthash="5848349" _mstvisible="3" style="text-align: left;" %)
1094 (((
1095 If devise doesn't have any data in the polling time. Device will uplink 11 bytes of 0   
1096 )))
1097 )))
1098 )))
1099
1100
1101 (% _mstvisible="1" style="text-align: left;" %)
1102 (% _msthash="315269" _msttexthash="104767" _mstvisible="3" %)**Example:**
1103
1104 (% _msthash="315270" _msttexthash="913822" _mstvisible="1" style="text-align: left;" %)
1105 If LHT65N has below data inside Flash:
1106
1107 (% _mstvisible="1" %)
1108 [[image:image-20220523144455-1.png||_mstalt="430040" _mstvisible="3" height="335" width="735"]]
1109
1110 (% _mstvisible="1" %)
1111 (((
1112 (% _msthash="506081" _msttexthash="1663961" _mstvisible="2" style="text-align: left;" %)
1113 If user sends below downlink command: (% _mstvisible="3" style="background-color:yellow" %)3160065F9760066DA705
1114 )))
1115
1116 (% _mstvisible="1" %)
1117 (((
1118 (% _msthash="506082" _msttexthash="1092494" _mstvisible="2" style="text-align: left;" %)
1119 Where : Start time: 60065F97 = time 21/1/19 04:27:03
1120 )))
1121
1122 (% _mstvisible="1" %)
1123 (((
1124 (% _msthash="506083" _msttexthash="737269" _mstvisible="2" style="text-align: left;" %)
1125 Stop time 60066DA7= time 21/1/19 05:27:(% _msthash="903005" _msttexthash="9672" _mstvisible="2" %)03
1126 )))
1127
1128 (% _mstvisible="1" %)
1129 (((
1130 (% _mstvisible="2" %)
1131
1132 )))
1133
1134 (% _mstvisible="1" %)
1135 (((
1136 (% _msthash="506084" _msttexthash="751218" _mstvisible="2" style="text-align: left;" %)
1137 LHT65N will uplink this payload.
1138 )))
1139
1140 (% _mstvisible="1" %)
1141 [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
1142
1143
1144 (% _msthash="315271" _msttexthash="12012546" _mstvisible="1" style="text-align: left;" %)
1145 (((
1146 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
1147 )))
1148
1149 (% _msthash="315237" _msttexthash="1385839" %)
1150 (((
1151 Where the first 11 bytes is for the first entry:
1152 )))
1153
1154 (% _msthash="315238" _msttexthash="274846" %)
1155 (((
1156 7FFF089801464160065F97
1157 )))
1158
1159 (% _msthash="315239" _msttexthash="617435" %)
1160 (((
1161 Ext sensor data=0x7FFF/100=327.67
1162 )))
1163
1164 (% _msthash="315240" _msttexthash="270543" %)
1165 (((
1166 Temp=0x0898/100=22.00
1167 )))
1168
1169 (% _msthash="315241" _msttexthash="211783" %)
1170 (((
1171 Hum=0x0146/10=32.6
1172 )))
1173
1174 (% _msthash="315242" _msttexthash="1569776" %)
1175 (((
1176 poll message flag & Ext=0x41,means reply data,Ext=1
1177 )))
1178
1179 (% _msthash="315243" _msttexthash="1120509" %)
1180 (((
1181 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
1182 )))
1183
1184
1185
1186 == 2.7 Alarm Mode ==
1187
1188
1189 (((
1190 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.
1191 )))
1192
1193 (((
1194 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
1195
1196 === **2.7.1 ALARM MODE ( Since v1.3.1 firmware)** ===
1197
1198 (((
1199 (% class="box infomessage" %)
1200 (((
1201 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
1202
1203 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1204
1205 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1206
1207 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
1208
1209 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1210 )))
1211 )))
1212
1213
1214
1215 )))
1216
1217 (((
1218 === **2.7.2 ALARM MODE ( Before v1.3.1 firmware)** ===
1219 )))
1220
1221 (% _mstvisible="1" class="box infomessage" %)
1222 (((
1223 (((
1224 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
1225 )))
1226
1227 (((
1228 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
1229 )))
1230
1231 (((
1232 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
1233 )))
1234
1235 (((
1236 **AT+ARTEMP=？ **:  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
1237 )))
1238
1239 (((
1240 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
1241 )))
1242 )))
1243
1244 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
1245
1246 Total bytes: 8 bytes
1247
1248 **Example:**AA0100010001003C
1249
1250 WMOD=01
1251
1252 CITEMP=0001
1253
1254 TEMPlow=0001
1255
1256 TEMPhigh=003C
1257
1258
1259
1260 == 2.8 LED Indicator ==
1261
1262
1263 The LHT65 has a triple color LED which for easy showing different stage .
1264
1265 While user press ACT button, the LED will work as per LED status with ACT button.
1266
1267 In a normal working state:
1268
1269 * For each uplink, the BLUE LED or RED LED will blink once.
1270 BLUE LED when external sensor is connected.
1271 * RED LED when external sensor is not connected
1272 * For each success downlink, the PURPLE LED will blink once
1273
1274 == 2.9 installation ==
1275
1276
1277 (% _mstvisible="1" %)
1278 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
1279
1280
1281
1282 = 3. Sensors and Accessories =
1283
1284
1285 == 3.1 E2 Extension Cable ==
1286
1287
1288 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
1289
1290
1291 **1m long breakout cable for LHT65N. Features:**
1292
1293 * (((
1294 Use for AT Command， works for both LHT52/LHT65N
1295 )))
1296 * (((
1297 Update firmware for LHT65N, works for both LHT52/LHT65N
1298 )))
1299 * (((
1300 Supports ADC mode to monitor external ADC
1301 )))
1302 * (((
1303 Supports Interrupt mode
1304 )))
1305 * (((
1306 Exposed All pins from the LHT65N Type-C connector.
1307
1308
1309
1310 )))
1311
1312 [[image:image-20220619092421-3.png||height="371" width="529"]]
1313
1314
1315
1316
1317 == 3.2 E3 Temperature Probe ==
1318
1319
1320 [[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"]]
1321
1322
1323 Temperature sensor with 2 meters cable long
1324
1325 * Resolution: 0.0625 °C
1326 * ±0.5°C accuracy from -10°C to +85°C
1327 * ±2°C accuracy from -55°C to +125°C
1328 * Operating Range: -40 ~~ 125 °C
1329 * Working voltage 2.35v ~~ 5v
1330
1331 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1332
1333
1334 (((
1335 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1336 )))
1337
1338 * (((
1339 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1340 )))
1341
1342 * (((
1343 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1344 )))
1345
1346 (((
1347 There are two kinds of commands to configure LHT65N, they are:
1348 )))
1349
1350 * (((
1351 (% style="color:#4f81bd" %)**General Commands**.
1352 )))
1353
1354 (((
1355 These commands are to configure:
1356 )))
1357
1358 1. (((
1359 General system settings like: uplink interval.
1360 )))
1361 1. (((
1362 LoRaWAN protocol & radio-related commands.
1363 )))
1364
1365 (((
1366 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]]
1367 )))
1368
1369 * (((
1370 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1371 )))
1372
1373 (((
1374 These commands are only valid for LHT65N, as below:
1375 )))
1376
1377
1378
1379 == 4.1 Set Transmit Interval Time ==
1380
1381
1382 Feature: Change LoRaWAN End Node Transmit Interval.
1383
1384
1385 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1386
1387 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
1388
1389
1390 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1391
1392 Format: Command Code (0x01) followed by 3 bytes time value.
1393
1394 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1395
1396 * **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1397
1398 * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1399
1400 == 4.2 Set External Sensor Mode ==
1401
1402
1403 Feature: Change External Sensor Mode.
1404
1405
1406 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1407
1408 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
1409
1410
1411 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1412
1413 Total bytes: 2 ~~ 5 bytes
1414
1415 **Example:**
1416
1417 * 0xA201: Set external sensor type to E1
1418
1419 * 0xA209: Same as AT+EXT=9
1420
1421 * 0xA20702003c: Same as AT+SETCNT=60
1422
1423 == 4.3 Enable/Disable uplink Temperature probe ID ==
1424
1425
1426 (((
1427 Feature: If PID is enabled, device will send the temperature probe ID on:
1428 )))
1429
1430 * (((
1431 First Packet after OTAA Join
1432 )))
1433 * (((
1434 Every 24 hours since the first packet.
1435 )))
1436
1437 (((
1438 PID is default set to disable (0)
1439
1440
1441 )))
1442
1443 (% style="color:#4f81bd" %)**AT Command:**
1444
1445 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
1446
1447
1448 (% style="color:#4f81bd" %)**Downlink Command:**
1449
1450 * **0xA800**  **~-~->** AT+PID=0
1451 * **0xA801**     **~-~->** AT+PID=1
1452
1453 == 4.4 Set Password ==
1454
1455
1456 Feature: Set device password, max 9 digits
1457
1458
1459 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1460
1461 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
1462
1463
1464 (% style="color:#4f81bd" %)**Downlink Command:**
1465
1466 No downlink command for this feature.
1467
1468
1469
1470 == 4.5 Quit AT Command ==
1471
1472
1473 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1474
1475
1476 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1477
1478 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
1479
1480
1481 (% style="color:#4f81bd" %)**Downlink Command:**
1482
1483 No downlink command for this feature.
1484
1485
1486
1487 == 4.6 Set to sleep mode ==
1488
1489
1490 Feature: Set device to sleep mode
1491
1492 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1493 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1494
1495 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1496
1497 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
1498
1499
1500 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1501
1502 * There is no downlink command to set to Sleep mode.
1503
1504 == 4.7 Set system time ==
1505
1506
1507 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1508
1509
1510 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1511
1512 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1513
1514
1515 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1516
1517 0x306007806000  ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1518
1519
1520
1521 == 4.8 Set Time Sync Mode ==
1522
1523
1524 (((
1525 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1526 )))
1527
1528 (((
1529 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.
1530
1531
1532 )))
1533
1534 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1535
1536 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1537
1538
1539 (% style="color:#4f81bd" %)**Downlink Command:**
1540
1541 0x28 01  ~/~/  Same As AT+SYNCMOD=1
1542 0x28 00  ~/~/  Same As AT+SYNCMOD=0
1543
1544
1545
1546 == 4.9 Set Time Sync Interval ==
1547
1548
1549 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1550
1551
1552 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1553
1554 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1555
1556
1557 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1558
1559 **0x29 0A**  ~/~/ Same as AT+SYNCTDC=0x0A
1560
1561
1562
1563 == 4.10 Print data entries base on page. ==
1564
1565
1566 Feature: Print the sector data from start page to stop page (max is 416 pages).
1567
1568
1569 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1570
1571 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1572
1573
1574 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1575
1576 No downlink commands for feature
1577
1578
1579
1580 == 4.11 Print last few data entries. ==
1581
1582
1583 Feature: Print the last few data entries
1584
1585
1586 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1587
1588 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1589
1590
1591 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1592
1593 No downlink commands for feature
1594
1595
1596
1597 == 4.12 Clear Flash Record ==
1598
1599
1600 Feature: Clear flash storage for data log feature.
1601
1602
1603 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1604
1605 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1606
1607
1608 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1609
1610 * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1611
1612 == 4.13 Auto Send None-ACK messages ==
1613
1614
1615 (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
1616 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.
1617
1618
1619 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1620
1621 (% _msthash="315396" _msttexthash="734682" _mstvisible="1" %)
1622 The default factory setting is 0
1623
1624 (% _mstvisible="1" border="1" style="background-color:#ffffcc; color:green; width:450px" %)
1625 (% _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**
1626 (% _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
1627
1628 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1629
1630 * Example: 0x3401 ~/~/  Same as AT+PNACKMD=1
1631
1632 = 5. Battery & How to replace =
1633
1634
1635 == 5.1 Battery Type ==
1636
1637
1638 (((
1639 (((
1640 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.
1641 )))
1642 )))
1643
1644 (((
1645
1646 )))
1647
1648 (((
1649 (((
1650 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1651 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1652 )))
1653 )))
1654
1655 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1656
1657
1658
1659 == 5.2 Replace Battery ==
1660
1661
1662 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.
1663
1664 [[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"]]
1665
1666
1667 == 5.3 Battery Life Analyze ==
1668
1669
1670 (((
1671 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:
1672 [[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]]
1673 )))
1674
1675 (((
1676
1677 )))
1678
1679 (((
1680 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]]
1681 )))
1682
1683
1684
1685 = 6. FAQ =
1686
1687
1688 == 6.1 How to use AT Command? ==
1689
1690
1691 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.
1692
1693 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1694
1695
1696 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1697
1698 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1699 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1700 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1701
1702 (((
1703 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.
1704 )))
1705
1706
1707 Input password and ATZ to activate LHT65N,As shown below:
1708
1709 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1710
1711
1712 (% _msthash="506066" _msttexthash="544869" %)
1713 AT Command List is as below:
1714
1715 (% _msthash="506067" _msttexthash="361920" %)
1716 AT+<CMD>? :  Help on <CMD>
1717
1718 (% _msthash="506068" _msttexthash="243061" %)
1719 AT+<CMD> :  Run <CMD>
1720
1721 (% _msthash="506069" _msttexthash="704197" %)
1722 AT+<CMD>=<value> :  Set the value
1723
1724 (% _msthash="506070" _msttexthash="455676" %)
1725 AT+<CMD>=? :  Get the value
1726
1727 (% _msthash="506071" _msttexthash="670553" %)
1728 AT+DEBUG:  Set more info output
1729
1730 (% _msthash="506072" _msttexthash="485888" %)
1731 ATZ:  Trig a reset of the MCU
1732
1733 (% _msthash="506073" _msttexthash="2068872" %)
1734 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1735
1736 (% _msthash="506074" _msttexthash="689169" %)
1737 AT+DEUI:  Get or Set the Device EUI
1738
1739 (% _msthash="506075" _msttexthash="960414" %)
1740 AT+DADDR:  Get or Set the Device Address
1741
1742 (% _msthash="506076" _msttexthash="1079897" %)
1743 AT+APPKEY:  Get or Set the Application Key
1744
1745 (% _msthash="506077" _msttexthash="1326143" %)
1746 AT+NWKSKEY:  Get or Set the Network Session Key
1747
1748 (% _msthash="506078" _msttexthash="1573000" %)
1749 AT+APPSKEY:  Get or Set the Application Session Key
1750
1751 (% _msthash="506079" _msttexthash="1041729" %)
1752 AT+APPEUI:  Get or Set the Application EUI
1753
1754 (% _msthash="506080" _msttexthash="2104206" %)
1755 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1756
1757 (% _msthash="506081" _msttexthash="3369288" %)
1758 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1759
1760 (% _msthash="506082" _msttexthash="1894529" %)
1761 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1762
1763 (% _msthash="506083" _msttexthash="3864172" %)
1764 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1765
1766 (% _msthash="506084" _msttexthash="1712204" %)
1767 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1768
1769 (% _msthash="506085" _msttexthash="1281202" %)
1770 AT+RX2FQ:  Get or Set the Rx2 window frequency
1771
1772 (% _msthash="506086" _msttexthash="2796781" %)
1773 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1774
1775 (% _msthash="506087" _msttexthash="3285165" %)
1776 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1777
1778 (% _msthash="506088" _msttexthash="3286179" %)
1779 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1780
1781 (% _msthash="506089" _msttexthash="4703803" %)
1782 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1783
1784 (% _msthash="506090" _msttexthash="4704999" %)
1785 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1786
1787 (% _msthash="506091" _msttexthash="1528683" %)
1788 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1789
1790 (% _msthash="506092" _msttexthash="757185" %)
1791 AT+NWKID:  Get or Set the Network ID
1792
1793 (% _msthash="506093" _msttexthash="1156597" %)
1794 AT+FCU:  Get or Set the Frame Counter Uplink
1795
1796 (% _msthash="506094" _msttexthash="1273987" %)
1797 AT+FCD:  Get or Set the Frame Counter Downlink
1798
1799 (% _msthash="506095" _msttexthash="859222" %)
1800 AT+CLASS:  Get or Set the Device Class
1801
1802 (% _msthash="506096" _msttexthash="384852" %)
1803 AT+JOIN:  Join network
1804
1805 (% _msthash="506097" _msttexthash="548626" %)
1806 AT+NJS:  Get the join status
1807
1808 (% _msthash="506098" _msttexthash="2546206" %)
1809 AT+SENDB:  Send hexadecimal data along with the application port
1810
1811 (% _msthash="506099" _msttexthash="1932307" %)
1812 AT+SEND:  Send text data along with the application port
1813
1814 (% _msthash="506100" _msttexthash="3560557" %)
1815 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1816
1817 (% _msthash="506101" _msttexthash="1429701" %)
1818 AT+RECV:  Print last received data in raw format
1819
1820 (% _msthash="506102" _msttexthash="1735981" %)
1821 AT+VER:  Get current image version and Frequency Band
1822
1823 (% _msthash="506103" _msttexthash="1189474" %)
1824 AT+CFM:  Get or Set the confirmation mode (0-1)
1825
1826 (% _msthash="506104" _msttexthash="1718210" %)
1827 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1828
1829 (% _msthash="506105" _msttexthash="1339403" %)
1830 AT+SNR:  Get the SNR of the last received packet
1831
1832 (% _msthash="506106" _msttexthash="1452009" %)
1833 AT+RSSI:  Get the RSSI of the last received packet
1834
1835 (% _msthash="506107" _msttexthash="2768142" %)
1836 AT+TDC:  Get or set the application data transmission interval in ms
1837
1838 (% _msthash="506108" _msttexthash="1083914" %)
1839 AT+PORT:  Get or set the application port
1840
1841 (% _msthash="506109" _msttexthash="622440" %)
1842 AT+DISAT:  Disable AT commands
1843
1844 (% _msthash="506110" _msttexthash="868361" %)
1845 AT+PWORD: Set password, max 9 digits
1846
1847 (% _msthash="506111" _msttexthash="2210299" %)
1848 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1849
1850 (% _msthash="506112" _msttexthash="2113462" %)
1851 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1852
1853 (% _msthash="506113" _msttexthash="2087423" %)
1854 AT+PDTA:  Print the sector data from start page to stop page
1855
1856 (% _msthash="506114" _msttexthash="1063127" %)
1857 AT+PLDTA:  Print the last few sets of data
1858
1859 (% _msthash="506115" _msttexthash="1999426" %)
1860 AT+CLRDTA:  Clear the storage, record position back to 1st
1861
1862 (% _msthash="506116" _msttexthash="442130" %)
1863 AT+SLEEP:  Set sleep mode
1864
1865 (% _msthash="506117" _msttexthash="1080222" %)
1866 AT+EXT:  Get or Set external sensor model
1867
1868 (% _msthash="506118" _msttexthash="1309490" %)
1869 AT+BAT:  Get the current battery voltage in mV
1870
1871 (% _msthash="506119" _msttexthash="813891" %)
1872 AT+CFG:  Print all configurations
1873
1874 (% _msthash="506120" _msttexthash="551707" %)
1875 AT+WMOD:  Get or Set Work Mode
1876
1877 (% _msthash="506121" _msttexthash="2631499" %)
1878 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1879
1880 (% _msthash="506122" _msttexthash="3907150" %)
1881 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1882
1883 (% _msthash="506123" _msttexthash="854620" %)
1884 AT+SETCNT:  Set the count at present
1885
1886 (% _msthash="506124" _msttexthash="2554877" %)
1887 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1888
1889 (% _msthash="506125" _msttexthash="771849" %)
1890 AT+RPL:  Get or set response level
1891
1892 (% _msthash="506126" _msttexthash="1484314" %)
1893 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1894
1895 (% _msthash="506127" _msttexthash="741728" %)
1896 AT+LEAPSEC:  Get or Set Leap Second
1897
1898 (% _msthash="506128" _msttexthash="1694017" %)
1899 AT+SYNCMOD:  Get or Set time synchronization method
1900
1901 (% _msthash="506129" _msttexthash="2235948" %)
1902 AT+SYNCTDC:  Get or set time synchronization interval in day
1903
1904 (% _msthash="506130" _msttexthash="425542" %)
1905 AT+PID:  Get or set the PID
1906
1907
1908
1909 == 6.2 Where to use AT commands and Downlink commands ==
1910
1911
1912 **AT commands：**
1913
1914 [[image:image-20220620153708-1.png||height="603" width="723"]]
1915
1916
1917 **Downlink commands:**
1918
1919
1920
1921 (% style="color:blue" %)**TTN:**
1922
1923 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1924
1925
1926
1927 (% style="color:blue" %)**Helium：**
1928
1929 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1930
1931
1932
1933 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1934
1935
1936 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1937
1938
1939 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1940
1941
1942
1943 (% style="color:blue" %)**Aws:**
1944
1945 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1946
1947
1948
1949 == 6.3 How to change the uplink interval？ ==
1950
1951
1952 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);"]]
1953
1954
1955
1956 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1957
1958
1959 [[image:image-20220615153355-1.png]]
1960
1961 [[image:1655802313617-381.png]]
1962
1963
1964 (((
1965 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.
1966 )))
1967
1968
1969 Input password and ATZ to activate LHT65N,As shown below:
1970
1971 [[image:image-20220615154519-3.png||height="672" width="807"]]
1972
1973
1974
1975 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1976
1977
1978 [[image:image-20220615153355-1.png]]
1979
1980
1981 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
1982
1983 [[image:image-20220615170542-5.png]]
1984
1985
1986
1987 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1988
1989 (% _msthash="506146" _msttexthash="52173160" %)
1990 First connect the four lines；(% style="display:none" %)
1991
1992 [[image:image-20220621170938-1.png||height="413" width="419"]](% _mstvisible="1" %)，(% style="display:none" %)
1993
1994
1995 (% _mstvisible="1" %)Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1996
1997 [[image:image-20220621170938-2.png]]
1998
1999
2000
2001 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
2002
2003 [[image:image-20220615171334-6.png]]
2004
2005
2006 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
2007
2008
2009 When this interface appears, it indicates that the download has been completed.
2010
2011 [[image:image-20220620160723-8.png]]
2012
2013
2014 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
2015
2016
2017
2018 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
2019
2020
2021 [[image:image-20220623110706-1.png]]
2022
2023
2024 [[image:image-20220623112117-4.png||height="459" width="343"]]
2025
2026
2027 (((
2028 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.
2029 )))
2030
2031
2032 Input password and ATZ to activate LHT65N,As shown below:
2033
2034 [[image:image-20220615154519-3.png||height="672" width="807"]]
2035
2036
2037
2038 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
2039
2040
2041 [[image:image-20220623110706-1.png]]
2042
2043
2044 (% style="color:blue" %)**Step1**(%%): Install TremoProgrammer  first.
2045
2046 [[image:image-20220615170542-5.png]]
2047
2048
2049
2050 (% style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
2051
2052 (% _msthash="506146" _msttexthash="52173160" %)
2053 First connect the four lines；
2054
2055 (% _msthash="506146" _msttexthash="52173160" %)
2056 [[image:image-20220623113959-5.png||height="528" width="397"]]
2057
2058 (% _msthash="506146" _msttexthash="52173160" %)
2059 Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
2060
2061
2062
2063 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
2064
2065 [[image:image-20220615171334-6.png]]
2066
2067
2068 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
2069
2070
2071 When this interface appears, it indicates that the download has been completed.
2072
2073 [[image:image-20220620160723-8.png]]
2074
2075
2076 Finally,restart reset device again
2077
2078
2079
2080 = 7. Order Info =
2081
2082
2083 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
2084
2085 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
2086
2087 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
2088 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
2089 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
2090 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
2091 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
2092 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
2093 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
2094 * (% style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
2095
2096 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
2097
2098 * (% style="color:red" %)**E3**(%%): External Temperature Probe
2099
2100 = 8. Packing Info =
2101
2102
2103 **Package Includes**:
2104
2105 * LHT65N Temperature & Humidity Sensor x 1
2106 * Optional external sensor
2107
2108 **Dimension and weight**:
2109
2110 * Device Size:  10 x 10 x 3.5 cm
2111 * Device Weight: 120.5g
2112
2113 = 9. Reference material =
2114
2115
2116 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
2117
2118 = 10. FCC Warning =
2119
2120
2121 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
2122
2123 (1) This device may not cause harmful interference；
2124
2125 (2) this device must accept any interference received, including interference that may cause undesired operation.
2126
2127
2128

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