Version 107.1 by Bei Jinggeng on 2022/05/25 17:24
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2 [[image:image-20220523115324-1.jpeg||_mstalt="469677" height="317" width="317"]]
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5 (% _msthash="315237" _msttexthash="1697033" %)**LHT65N LoRaWAN Temperature & Humidity Sensor Manual**
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10 (% _msthash="315238" _msttexthash="18964465" %)**Table of Contents：**
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12 {{toc/}}
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17 = (% _msthash="277498" _msttexthash="253045" %)1. Introduction(%%) =
18
19 == (% _msthash="1532895" _msttexthash="1426958" %)1.1 What is LHT65N Temperature & Humidity Sensor(%%) ==
20
21 (((
22 (% _msthash="506051" _msttexthash="24333127" %)
23 The Dragino LHT65N Temperature & Humidity sensor is a Long Range LoRaWAN Sensor. It includes a (% style="color:#4f81bd" %)**built-in Temperature & Humidity sensor**(%%) and has an external sensor connector to connect to an external (% style="color:#4f81bd" %)**Temperature Sensor**(%%)**.**
24 )))
25
26 (((
27 (% _msthash="506052" _msttexthash="66005810" %)
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 (% _msthash="506053" _msttexthash="4298047" %)
33 LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
34 )))
35
36 (((
37 (% _msthash="506054" _msttexthash="6016374" %)
38 LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
39 )))
40
41 (((
42 (% _msthash="506055" _msttexthash="17023136" %)
43 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.
44 )))
45
46 (((
47 (% _msthash="506056" _msttexthash="5557097" %)
48 *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
49 )))
50
51 == (% _msthash="182559" _msttexthash="163319" %)1.2 Features(%%) ==
52
53 * Wall mountable
54 * LoRaWAN v1.0.3 Class A protocol
55 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
56 * AT Commands to change parameters
57 * Remote configure parameters via LoRaWAN Downlink
58 * Firmware upgradeable via program port
59 * Built-in 2400mAh battery for up to 10 years of use.
60 * Built-in Temperature & Humidity sensor
61 * Optional External Sensors
62 * Tri-color LED to indicate working status
63 * Datalog feature
64
65 == (% _msthash="323570" _msttexthash="297635" %)1.3 Specification(%%) ==
66
67 (((
68 (% _msthash="506057" _msttexthash="671437" %)**Built-in Temperature Sensor:**
69 )))
70
71 * (((
72 (% _msthash="902993" _msttexthash="294424" %)
73 Resolution: 0.01 °C
74 )))
75 * (((
76 (% _msthash="902994" _msttexthash="690664" %)
77 Accuracy Tolerance : Typ ±0.3 °C
78 )))
79 * (((
80 (% _msthash="902995" _msttexthash="504647" %)
81 Long Term Drift: < 0.02 °C/yr
82 )))
83 * (((
84 (% _msthash="902996" _msttexthash="478257" %)
85 Operating Range: -40 ~~ 85 °C
86 )))
87
88 (((
89 (% _msthash="506058" _msttexthash="544453" %)**Built-in Humidity Sensor:**
90 )))
91
92 * (((
93 (% _msthash="902997" _msttexthash="282438" %)
94 Resolution: 0.04 %RH
95 )))
96 * (((
97 (% _msthash="902998" _msttexthash="628771" %)
98 Accuracy Tolerance : Typ ±3 %RH
99 )))
100 * (((
101 (% _msthash="902999" _msttexthash="504647" %)
102 Long Term Drift: < 0.02 °C/yr
103 )))
104 * (((
105 (% _msthash="903000" _msttexthash="421291" %)
106 Operating Range: 0 ~~ 96 %RH
107 )))
108
109 (((
110 (% _msthash="506059" _msttexthash="680537" %)**External Temperature Sensor:**
111 )))
112
113 * (((
114 (% _msthash="903001" _msttexthash="332254" %)
115 Resolution: 0.0625 °C
116 )))
117 * (((
118 (% _msthash="903002" _msttexthash="782600" %)
119 ±0.5°C accuracy from -10°C to +85°C
120 )))
121 * (((
122 (% _msthash="903003" _msttexthash="729482" %)
123 ±2°C accuracy from -55°C to +125°C
124 )))
125 * (((
126 (% _msthash="903004" _msttexthash="592540" %)
127 Operating Range: -55 °C ~~ 125 °C
128 )))
129
130 = (% _msthash="655759" _msttexthash="618618" %)2. Connect LHT65N to IoT Server(%%) =
131
132 == (% _msthash="462371" _msttexthash="410332" %)2.1 How does LHT65N work?(%%) ==
133
134 (((
135 (% _msthash="506060" _msttexthash="28254538" %)
136 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.
137 )))
138
139 (((
140 (% _msthash="506061" _msttexthash="48200724" %)
141 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.
142 )))
143
144 == (% _msthash="514384" _msttexthash="458666" %)2.2 How to Activate LHT65N?(%%) ==
145
146 (% _msthash="315239" _msttexthash="748241" %)
147 The LHT65N has two working modes:
148
149 * **Deep Sleep Mode**: LHT65N doesn’t have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.
150 * **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, LHT65 will be in STOP mode (IDLE mode), in STOP mode, LHT65N has the same power consumption as Deep Sleep mode. 
151
152 (((
153 (% _msthash="506062" _msttexthash="6036823" %)
154 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
155 )))
156
157 [[image:image-20220515123819-1.png||_mstalt="430742" height="379" width="317"]]
158
159 [[image:image-20220525110604-2.png||_mstalt="427531"]]
160
161 == (% _msthash="882726" _msttexthash="838526" %)2.3 Example to join LoRaWAN network(%%) ==
162
163 (% _msthash="315240" _msttexthash="9205482" class="wikigeneratedid" %)
164 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.
165
166 (% class="wikigeneratedid" %)
167 [[image:image-20220522232442-1.png||_mstalt="427830" height="387" width="648"]]
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169 (% _msthash="315241" _msttexthash="10802155" %)
170 Assume the LPS8N is already set to connect to [[TTN V3 network>>url:https://eu1.cloud.thethings.network]], So it provides network coverage for LHT65N. Next we need to add the LHT65N device in TTN V3:
171
172
173 === (% _msthash="670592" _msttexthash="634075" %)2.3.1 Step 1: Create Device n TTN(%%) ===
174
175 (% _msthash="315242" _msttexthash="1601782" %)
176 Create a device in TTN V3 with the OTAA keys from LHT65N.
177
178 (% _msthash="315243" _msttexthash="3694444" %)
179 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
180
181 [[image:image-20220522232812-2.png||_mstalt="428467" height="219" width="279"]]
182
183 (% _msthash="315244" _msttexthash="3659149" %)
184 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
185
186 (% _msthash="315245" _msttexthash="642889" %)
187 Add APP EUI in the application.
188
189 [[image:image-20220522232916-3.png||_mstalt="430495"]]
190
191 [[image:image-20220522232932-4.png||_mstalt="430157"]]
192
193 [[image:image-20220522232954-5.png||_mstalt="431847"]]
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195 (% _msthash="315246" _msttexthash="878800" %)
196 Note: LHT65N use same payload as LHT65.
197
198 [[image:image-20220522233026-6.png||_mstalt="429403"]]
199
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201 (% _msthash="315247" _msttexthash="595543" %)
202 Input APP EUI,  APP KEY and DEV EUI:
203
204 [[image:image-20220522233118-7.png||_mstalt="430430"]]
205
206
207 === (% _msthash="3537456" _msttexthash="3448549" %)2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds.(%%) ===
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209 (% _msthash="315248" _msttexthash="14452321" %)
210 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.
211
212 [[image:image-20220522233300-8.png||_mstalt="428389" height="219" width="722"]]
213
214
215 == (% _msthash="320879" _msttexthash="294970" %)2.4 Uplink Payload(%%) ==
216
217 (% _msthash="315249" _msttexthash="7722962" %)
218 The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and (% style="color:#4f81bd" %)**every 20 minutes**(%%) send one uplink by default.
219
220 (% _msthash="315250" _msttexthash="1322711" %)
221 After each uplink, the (% style="color:blue" %)**BLUE LED**(%%) will blink once.
222
223 (% border="1" style="background-color:#ffffcc; color:green; width:426px" %)
224 |(% style="width:97px" %)(((
225 (% _msthash="1817478" _msttexthash="161122" %)**Size(bytes)**
226 )))|(% style="width:39px" %)(((
227 (% _msthash="1817479" _msttexthash="4550" %)**2**
228 )))|(% style="width:100px" %)(((
229 (% _msthash="1817480" _msttexthash="4550" %)**2**
230 )))|(% style="width:77px" %)(((
231 (% _msthash="1817481" _msttexthash="4550" %)**2**
232 )))|(% style="width:47px" %)(((
233 (% _msthash="1817482" _msttexthash="4459" %)**1**
234 )))|(% style="width:51px" %)(((
235 (% _msthash="1817483" _msttexthash="4732" %)**4**
236 )))
237 |(% style="width:97px" %)(((
238 (% _msthash="1817484" _msttexthash="60203" %)**Value**
239 )))|(% style="width:39px" %)(((
240 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo" _msthash="1817485" _msttexthash="22594"]]
241 )))|(% style="width:100px" %)(((
242 (((
243 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224742" _msttexthash="405769"]]
244 )))
245 )))|(% style="width:77px" %)(((
246 (((
247 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2224743" _msttexthash="105872"]]
248 )))
249
250 (((
251 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224744" _msttexthash="117429"]]
252 )))
253 )))|(% style="width:47px" %)(((
254 [[Ext>>||anchor="H2.4.5Ext23" _msthash="1817486" _msttexthash="32331"]] #
255 )))|(% style="width:51px" %)(((
256 [[Ext value>>||anchor="H2.4.6Extvalue" _msthash="1817487" _msttexthash="116545"]]
257 )))
258
259 * The First 6 bytes: has fix meanings for every LHT65N.
260 * The 7th byte (EXT #): defines the external sensor model.
261 * The 8(% _msthash="734721" _msttexthash="21372" %)^^th^^(%%) ~~ 11(% _msthash="734864" _msttexthash="21372" %)^^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.)
262
263 === (% _msthash="360269" _msttexthash="333762" %)2.4.1 Decoder in TTN V3(%%) ===
264
265 (% _msthash="315251" _msttexthash="9786491" %)
266 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.
267
268 (% _msthash="315252" _msttexthash="3928483" %)
269 Below is the position to put the decoder and LHT65N decoder can be download from here:
270
271 [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0 >>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0||_msthash="315253" _msttexthash="3509064"]]
272
273 [[image:image-20220522234118-10.png||_mstalt="451464" height="353" width="729"]]
274
275 === (% _msthash="411411" _msttexthash="383656" %)2.4.2 BAT-Battery Info(%%) ===
276
277 (% _msthash="315254" _msttexthash="3122912" %)
278 These two bytes of BAT include the battery state and the actually voltage
279
280 [[image:image-20220523152839-18.png||_mstalt="457613"]]
281
282 [[image:image-20220522235639-1.png||_mstalt="431392" height="139" width="727"]]
283
284 (% _msthash="315255" _msttexthash="871611" %)
285 Check the battery voltage for LHT65N.
286
287 * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
288 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
289
290 === (% _msthash="600769" _msttexthash="565838" %)2.4.3 Built-in Temperature(%%) ===
291
292 [[image:image-20220522235639-2.png||_mstalt="431756" height="138" width="722"]]
293
294 * Temperature:  0x0ABB/100=27.47℃
295
296 [[image:image-20220522235639-3.png||_mstalt="432120"]]
297
298 * Temperature:  (0xF5C6-65536)/100=-26.18℃
299
300 === (% _msthash="475891" _msttexthash="445120" %)2.4.4 Built-in Humidity(%%) ===
301
302 [[image:image-20220522235639-4.png||_mstalt="432484" height="138" width="722"]]
303
304 * Humidity:    0x025C/10=60.4%
305
306 === (% _msthash="116532" _msttexthash="87958" %)2.4.5 Ext #(%%) ===
307
308 (% _msthash="315256" _msttexthash="552240" %)
309 Bytes for External Sensor:
310
311 [[image:image-20220523152822-17.png||_mstalt="454545"]]
312
313 === (% _msthash="221429" _msttexthash="200655" %)2.4.6 Ext value(%%) ===
314
315 ==== (% _msthash="1005901" _msttexthash="877578" %)2.4.6.1 Ext~=1, E3 Temperature Sensor(%%) ====
316
317 [[image:image-20220522235639-5.png||_mstalt="432848"]]
318
319 * DS18B20 temp=0x0ADD/100=27.81℃
320
321 (% _msthash="315257" _msttexthash="1038479" %)
322 The last 2 bytes of data are meaningless
323
324 [[image:image-20220522235639-6.png||_mstalt="433212"]]
325
326 * External temperature= (0xF54F-65536)/100=-27.37℃
327
328 (((
329 (% _msthash="506063" _msttexthash="1038479" %)
330 The last 2 bytes of data are meaningless
331 )))
332
333 (((
334 (% _msthash="506064" _msttexthash="21185632" %)
335 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
336 )))
337
338
339 ==== (% _msthash="1389752" _msttexthash="1234766" %)2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp(%%) ====
340
341 (% _msthash="315258" _msttexthash="41539368" %)
342 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:
343
344 (% border="1" style="background-color:#ffffcc; color:green; width:510px" %)
345 |(% style="width:96px" %)(((
346 (% _msthash="1817488" _msttexthash="161122" %)**Size(bytes)**
347 )))|(% style="width:71px" %)(((
348 (% _msthash="1817489" _msttexthash="4550" %)**2**
349 )))|(% style="width:99px" %)(((
350 (% _msthash="1817490" _msttexthash="4550" %)**2**
351 )))|(% style="width:132px" %)(((
352 (% _msthash="1817491" _msttexthash="4550" %)**2**
353 )))|(% style="width:54px" %)(((
354 (% _msthash="1817492" _msttexthash="4459" %)**1**
355 )))|(% style="width:64px" %)(((
356 (% _msthash="1817493" _msttexthash="4732" %)**4**
357 )))
358 |(% style="width:96px" %)(((
359 (% _msthash="1817494" _msttexthash="60203" %)**Value**
360 )))|(% style="width:71px" %)(((
361 [[External temperature>>||anchor="H4.2SetExternalSensorMode" _msthash="1817495" _msttexthash="426517"]]
362 )))|(% style="width:99px" %)(((
363 (((
364 [[Built-In>>||anchor="H2.4.3Built-inTemperature" _msthash="2224745" _msttexthash="100464"]]
365 )))
366
367 (((
368 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224746" _msttexthash="184041"]]
369 )))
370 )))|(% style="width:132px" %)(((
371 (((
372 (% _msthash="2224747" _msttexthash="136331" %)
373 BAT Status &
374 )))
375
376 (((
377 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224748" _msttexthash="311181"]]
378 )))
379 )))|(% style="width:54px" %)(((
380 (% _msthash="1817496" _msttexthash="147225" %)
381 Status & Ext
382 )))|(% style="width:64px" %)(((
383 (((
384 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2224749" _msttexthash="227175"]]
385 )))
386 )))
387
388 * (% _msthash="504958" _msttexthash="857922" %)**Battery status & (% class="wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink" %)Built-in Humidity(%%)**
389
390 (% border="1" style="background-color:#ffffcc; color:green; width:469px" %)
391 |(% _msthash="1230918" _msttexthash="93158" style="width:65px" %)Bit(bit)|(% _msthash="1230919" _msttexthash="57954" style="width:267px" %)[15:14]|(% _msthash="1230920" _msttexthash="48022" style="width:134px" %)[11:0]
392 |(% _msthash="1230921" _msttexthash="60203" style="width:65px" %)Value|(% style="width:267px" %)(((
393 (% _msthash="1817497" _msttexthash="128427" %)
394 BAT Status
395
396 (% _msthash="1817498" _msttexthash="472784" %)
397 00(b): Ultra Low ( BAT <= 2.50v)
398
399 (% _msthash="1817499" _msttexthash="483678" %)
400 01(b): Low  (2.50v <=BAT <= 2.55v)
401
402 (% _msthash="1817500" _msttexthash="440791" %)
403 10(b): OK   (2.55v <= BAT <=2.65v)
404
405 (% _msthash="1817501" _msttexthash="334191" %)
406 11(b): Good   (BAT >= 2.65v)
407 )))|(% style="width:134px" %)(((
408 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="1817502" _msttexthash="311181"]]
409
410
411 )))
412
413 * (% _msthash="504959" _msttexthash="245037" %)**Status & Ext Byte**
414
415 [[image:image-20220523152434-16.png||_mstalt="453921"]]
416
417 * Poll Message Flag: 1: This message is a poll message reply, 0: means this is a normal uplink.
418 * 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.
419 * 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)
420
421 == (% _msthash="487097" _msttexthash="454818" %)2.5 Show data on Datacake(%%) ==
422
423 (% _msthash="315259" _msttexthash="20933341" %)
424 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:
425
426 (((
427 (% _msthash="506065" _msttexthash="4753983" %)
428 **Step 1**: Be sure that your device is programmed and properly connected to the LoRaWAN network.
429 )))
430
431 (((
432 (% _msthash="506066" _msttexthash="14696682" %)
433 **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.
434 )))
435
436 (((
437 (% _msthash="506067" _msttexthash="180297" %)
438 Add Datacake:
439 )))
440
441 [[image:image-20220523000825-7.png||_mstalt="429884" height="262" width="583"]]
442
443
444 (% _msthash="315260" _msttexthash="750178" %)
445 Select default key as Access Key:
446
447 [[image:image-20220523000825-8.png||_mstalt="430248" height="453" width="406"]]
448
449 (% _msthash="315261" _msttexthash="2134964" %)
450 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/]]) , add LHT65 device.
451
452 [[image:image-20220523000825-9.png||_mstalt="430612" height="366" width="392"]]
453
454 [[image:image-20220523000825-10.png||_mstalt="450619" height="413" width="728"]]
455
456 == (% _msthash="350454" _msttexthash="323544" %)2.6 Datalog Feature(%%) ==
457
458 (% _msthash="315262" _msttexthash="32283004" %)
459 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.
460
461 === (% _msthash="886158" _msttexthash="842426" %)2.6.1 Ways to get datalog via LoRaWAN(%%) ===
462
463 (% _msthash="315263" _msttexthash="409604" %)
464 There are two methods:
465
466 1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specify time range.
467 1. Set [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]], LHT65N will wait for ACK for every uplink, when there is no LoRaWAN network, LHT65N will store the sensor data, and it will send all messages after network recover.
468
469 === (% _msthash="369915" _msttexthash="342797" %)2.6.2 Unix TimeStamp(%%) ===
470
471 (% _msthash="315264" _msttexthash="1182285" %)
472 LHT65N uses Unix TimeStamp format based on
473
474 [[image:image-20220523001219-11.png||_mstalt="450450" height="97" width="627"]]
475
476
477 (((
478 (% _msthash="506068" _msttexthash="2717234" %)
479 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
480 )))
481
482 (((
483 (% _msthash="506069" _msttexthash="709813" %)
484 Below is the converter example
485 )))
486
487 [[image:image-20220523001219-12.png||_mstalt="450827" height="298" width="720"]]
488
489 (% _msthash="315265" _msttexthash="15137317" %)
490 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
491
492 === (% _msthash="359294" _msttexthash="332748" %)2.6.3 Set Device Time(%%) ===
493
494 (((
495 (% _msthash="506070" _msttexthash="4521946" %)
496 There are two ways to set device’s time:
497 )))
498
499 (((
500 (% _msthash="506071" _msttexthash="1498471" %)**1. Through LoRaWAN MAC Command (Default settings)**
501 )))
502
503 (((
504 (% _msthash="506072" _msttexthash="2126267" %)
505 User need to set SYNCMOD=1 to enable sync time via MAC command.
506 )))
507
508 (((
509 (% _msthash="506073" _msttexthash="54430324" %)
510 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).
511 )))
512
513 (((
514 (% _msthash="506074" _msttexthash="92531127" %)
515 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.
516 )))
517
518 (((
519
520 )))
521
522 (((
523 (% _msthash="506075" _msttexthash="329719" %)**2. Manually Set Time**
524 )))
525
526 (((
527 (% _msthash="506076" _msttexthash="7889297" %)
528 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
529 )))
530
531 === (% _msthash="460759" _msttexthash="430001" %)2.6.4 Poll sensor value(%%) ===
532
533 (% _msthash="315266" _msttexthash="4955821" %)
534 User can poll sensor value based on timestamps from the server. Below is the downlink command.
535
536 [[image:image-20220523152302-15.png||_mstalt="451581"]]
537
538 (((
539 (% _msthash="506077" _msttexthash="14670916" %)
540 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.
541 )))
542
543 (((
544 For example, downlink command (% _mstmutation="1" %)**31 5FC5F350 5FC6 0160 05**(% style="display:none" %)
545 )))
546
547 (((
548 (% _msthash="506079" _msttexthash="6907459" %)
549 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
550 )))
551
552 (((
553 (% _msthash="506080" _msttexthash="23531573" %)
554 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
555 )))
556
557
558 === (% _msthash="650923" _msttexthash="614185" %)2.6.5 Datalog Uplink payload(%%) ===
559
560 (% _msthash="315267" _msttexthash="2245087" %)
561 The Datalog poll reply uplink will use below payload format.
562
563 (((
564 (% _msthash="506081" _msttexthash="451581" %)**Retrieval data payload**
565 )))
566
567 (% border="1" style="background-color:#ffffcc; color:green; width:510px" %)
568 |(% style="width:93px" %)(((
569 (((
570 (% _msthash="2224750" _msttexthash="161122" %)**Size(bytes)**
571 )))
572 )))|(% style="width:71px" %)(((
573 (((
574 (% _msthash="2224751" _msttexthash="4550" %)**2**
575 )))
576 )))|(% style="width:102px" %)(((
577 (((
578 (% _msthash="2224752" _msttexthash="4550" %)**2**
579 )))
580 )))|(% style="width:86px" %)(((
581 (((
582 (% _msthash="2224753" _msttexthash="4550" %)**2**
583 )))
584 )))|(% style="width:86px" %)(((
585 (((
586 (% _msthash="2224754" _msttexthash="4459" %)**1**
587 )))
588 )))|(% style="width:48px" %)(((
589 (((
590 (% _msthash="2224755" _msttexthash="4732" %)**4**
591 )))
592 )))
593 |(% style="width:93px" %)(((
594 (((
595 (% _msthash="2224756" _msttexthash="60203" %)**Value**
596 )))
597 )))|(% style="width:71px" %)(((
598 (((
599 [[External sensor data>>||anchor="H2.4.6Extvalue" _msthash="2224757" _msttexthash="386672"]]
600 )))
601 )))|(% style="width:102px" %)(((
602 (((
603 (((
604 [[Built In>>||anchor="H2.4.3Built-inTemperature" _msthash="2671864" _msttexthash="91065"]]
605 )))
606 )))
607
608 (((
609 (((
610 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2671865" _msttexthash="184041"]]
611 )))
612 )))
613 )))|(% style="width:86px" %)(((
614 (((
615 (((
616 [[Built-in>>||anchor="H2.4.4Built-inHumidity" _msthash="2671866" _msttexthash="105872"]]
617 )))
618 )))
619
620 (((
621 (((
622 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2671867" _msttexthash="117429"]]
623 )))
624 )))
625 )))|(% style="width:86px" %)(((
626 (((
627 (% _msthash="2224758" _msttexthash="390390" %)
628 Poll message flag & Ext
629 )))
630 )))|(% style="width:48px" %)(((
631 (((
632 (((
633 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp" _msthash="2671868" _msttexthash="227175"]]
634 )))
635 )))
636
637 (((
638 (((
639
640 )))
641 )))
642 )))
643
644 (% _msthash="315268" _msttexthash="390390" %)**Poll message flag & Ext**
645
646 [[image:image-20220523152208-14.png||_mstalt="452920"]]
647
648 (((
649 (((
650 (% _msthash="736723" _msttexthash="2005003" %)
651 Poll Message Flag: 1: This message is a poll message reply.
652 )))
653 )))
654
655 * (((
656 (((
657 (% _msthash="1197157" _msttexthash="561548" %)
658 Poll Message Flag is set to 1.
659 )))
660 )))
661 * (((
662 (((
663 (% _msthash="1197158" _msttexthash="9284964" %)
664 Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
665 )))
666 )))
667
668 (((
669 (((
670 (% _msthash="736724" _msttexthash="2242344" %)
671 For example, in US915 band, the max payload for different DR is:
672 )))
673 )))
674
675 (((
676 (((
677 (% _msthash="736725" _msttexthash="1065532" %)
678 a) DR0: max is 11 bytes so one entry of data
679 )))
680 )))
681
682 (((
683 (((
684 (% _msthash="736726" _msttexthash="3265665" %)
685 b) DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
686 )))
687 )))
688
689 (((
690 (((
691 (% _msthash="736727" _msttexthash="1454115" %)
692 c) DR2: total payload includes 11 entries of data
693 )))
694 )))
695
696 (((
697 (((
698 (% _msthash="736728" _msttexthash="1483924" %)
699 d) DR3: total payload includes 22 entries of data.
700 )))
701 )))
702
703 (((
704 (((
705 (% _msthash="736729" _msttexthash="5848349" %)
706 If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0   
707 )))
708 )))
709
710
711 (% _msthash="315269" _msttexthash="104767" %)**Example:**
712
713 (% _msthash="315270" _msttexthash="913822" %)
714 If LHT65N has below data inside Flash:
715
716 [[image:image-20220523144455-1.png||_mstalt="430040" height="335" width="735"]]
717
718 (((
719 (% _msthash="506082" _msttexthash="1663961" %)
720 If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705
721 )))
722
723 (((
724 (% _msthash="506083" _msttexthash="1092494" %)
725 Where : Start time: 60065F97 = time 21/1/19 04:27:03
726 )))
727
728 (((
729 (% _msthash="506084" _msttexthash="737269" %)
730 Stop time 60066DA7= time 21/1/19 05:27:03
731 )))
732
733 (((
734
735 )))
736
737 (((
738 (% _msthash="506085" _msttexthash="751218" %)
739 LHT65N will uplink this payload.
740 )))
741
742 [[image:image-20220523001219-13.png||_mstalt="451204" height="421" width="727"]]
743
744 (% _msthash="315271" _msttexthash="12012546" %)
745 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
746
747 (% _msthash="315272" _msttexthash="95618250" %)
748 其中，前 11 个字节表示第一个条目：
749
750 (% _msthash="315273" _msttexthash="274846" %)
751 7FFF089801464160065F97
752
753 (% _msthash="315274" _msttexthash="23352186" %)
754 外部传感器数据=0x7FFF/100=327.67
755
756 (% _msthash="315275" _msttexthash="5286827" %)
757 温度=0x0898/100=22.00
758
759 (% _msthash="315276" _msttexthash="7131241" %)
760 嗡嗡声=0x0146/10=32.6
761
762 (% _msthash="315277" _msttexthash="118235416" %)
763 轮询消息标志 & Ext=0x41，表示回复数据，Ext=1
764
765 (% _msthash="315278" _msttexthash="95647201" %)
766 Unix 时间是 0x60065F97=1611030423s=21/1/19 04：27：03
767
768
769 == (% _msthash="197717" _msttexthash="16752736" %)2.7 报警模式(%%) ==
770
771 (% _msthash="315279" _msttexthash="614443986" %)
772 当设备处于报警模式时，它会在短时间内检查内置传感器温度。如果温度超过预配置范围，它将立即发送上行链路。
773
774 (((
775 (% _msthash="506086" _msttexthash="304704764" style="color:red" %)注意：报警模式会增加一点功耗，我们建议在启用此功能时延长正常读取时间。
776 )))
777
778 (% _msthash="315280" _msttexthash="38172992" %)**报警模式的 AT 命令：**
779
780 (% class="box infomessage" %)
781 (((
782 (% _istranslated="1" _mstmutation="1" %)**AT+WMOD=1**(%%)：启用/禁用报警模式。（0：禁用，1：启用）
783
784 (% _msthash="506088" _msttexthash="258873758" %)
785 (% _istranslated="1" %)**AT+CITEMP=1**(%%)：检查警报温度的时间间隔。（单位：分钟）
786
787 (% _msthash="506089" _msttexthash="154134227" %)
788 (% _istranslated="1" %)**AT+ARTEMP**(%%)： 获取或设置内部温度传感器报警范围
789
790 (% _istranslated="1" _mstmutation="1" %)**AT+ARTEMP=？ **(%%)：获取内部温度传感器报警范围(% style="display:none" %)
791
792 (% _msthash="506091" _msttexthash="225614246" %)
793 (% _istranslated="1" %)**AT+ARTEMP=45，105**(%%)：将内部温度传感器报警范围设置为 45 至 105。
794 )))
795
796 == ==
797
798 == (% _msthash="276471" _msttexthash="12239526" %)2.8 指示灯(%%) ==
799
800 (((
801 (% _msthash="506092" _msttexthash="130028808" %)
802 LHT65N具有三色LED，可轻松显示不同的舞台。
803 )))
804
805 (((
806 (% _msthash="506093" _msttexthash="151611343" %)
807 按下 ACT 按钮时，LED 将按照带有 ACT 按钮的 LED 状态工作。
808 )))
809
810 (((
811 (% _msthash="506094" _msttexthash="33759063" %)
812 正常工作状态下：
813 )))
814
815 * (((
816 (% _msthash="903005" _msttexthash="141916112" %)
817 对于每个上行链路，蓝色 LED 或红色 LED 将闪烁一次。
818 )))
819 * (((
820 (% _msthash="903006" _msttexthash="49182913" %)
821 连接外部传感器时的蓝色 LED
822 )))
823 * (((
824 (% _msthash="903007" _msttexthash="55309774" %)
825 未连接外部传感器时的红色 LED
826 )))
827 * (((
828 (% _msthash="903008" _msttexthash="126991982" %)
829 对于每个成功的下行链路，紫色 LED 将闪烁一次
830 )))
831
832 ----
833
834 == (% _msthash="298350" _msttexthash="8069152" %)2.9 安装(%%) ==
835
836 [[image:image-20220516231650-1.png||_mstalt="5390151" alt="图片-20220516231650-1.png" height="436" width="428"]]
837
838 = (% _msthash="528658" _msttexthash="22116432" %)3. 传感器和配件(%%) =
839
840 == (% _msthash="487110" _msttexthash="17620759" %)3.1 E3温度探头(%%) ==
841
842 [[image:image-20220515080154-4.png||_mstalt="5391243" alt="图片-20220515080154-4.png" height="182" width="161"]] [[image:image-20220515080330-5.png||_mstalt="5390346" alt="图片-20220515080330-5.png" height="201" width="195"]]
843
844
845 (% _msthash="315354" _msttexthash="50315928" %)
846 带 2 米电缆长的温度传感器
847
848 * 分辨率：0.0625°C
849 * -10°C 至 +85°C 范围内的 ±0.5°C 精度
850 * -55°C 至 +125°C 范围内的 ±2°C 精度
851 * 工作范围： -40 ~~ 125 °C
852 * -55°C 至 125°C
853 * 工作电压 2.35v ~~ 5v
854
855 = (% _msthash="1745419" _msttexthash="88144758" %)4. 通过 AT 命令或 LoRaWAN 下行链路配置 LHT65N(%%) =
856
857 (((
858 (% _msthash="506246" _msttexthash="2005926" %)
859 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
860 )))
861
862 * (((
863 (% _msthash="903318" _msttexthash="635544" %)
864 AT Command Connection: See [[FAQ>>path:#AT_COMMAND]].
865 )))
866 * (((
867 (% _msthash="903319" _msttexthash="2004301" %)
868 LoRaWAN Downlink instruction for different platforms:
869 )))
870
871 (((
872 [[http:~~/~~/wiki.dragino.com/index.php?title=Main_Page#Use_Note_for_Server>>url:http://wiki.dragino.com/index.php?title=Main_Page#Use_Note_for_Server||_msthash="506247" _msttexthash="3599349"]]
873 )))
874
875 (((
876 (% _msthash="506248" _msttexthash="2144051" %)
877 There are two kinds of commands to configure LHT65N, they are:
878 )))
879
880 (((
881 (% _msthash="506249" _msttexthash="317850" style="color:#4f81bd" %)* **General Commands**.
882 )))
883
884 (((
885 (% _msthash="506250" _msttexthash="774527" %)
886 These commands are to configure:
887 )))
888
889 * (((
890 (% _msthash="903320" _msttexthash="1503580" %)
891 General system settings like: uplink interval.
892 )))
893 * (((
894 (% _msthash="903321" _msttexthash="1244334" %)
895 LoRaWAN protocol & radio-related commands.
896 )))
897
898 (((
899 (% _msthash="506251" _msttexthash="8343023" %)
900 They are the same for all Dragino Devices which supports DLWS-005 LoRaWAN Stack(Note~*~*). These commands can be found on the wiki:
901 )))
902
903 (((
904 [[http:~~/~~/wiki.dragino.com/index.php?title=End_Device_Downlink_Command>>url:http://wiki.dragino.com/index.php?title=End_Device_Downlink_Command||_msthash="506252" _msttexthash="3434769"]]
905 )))
906
907 (((
908 (% style="color:#4f81bd" %)* (% _msthash="506253" _msttexthash="792038" %)**Commands special design for LHT65N**
909 )))
910
911 (((
912 (% _msthash="506254" _msttexthash="1501357" %)
913 These commands are only valid for LHT65N, as below:
914 )))
915
916 == (% _msthash="708253" _msttexthash="668772" %)4.1 Set Transmit Interval Time(%%) ==
917
918 (% _msthash="315355" _msttexthash="1659268" %)
919 Feature: Change LoRaWAN End Node Transmit Interval.
920
921 (% _msthash="315356" _msttexthash="241696" %)**AT Command: AT+TDC**
922
923 [[image:image-20220523150701-2.png||_mstalt="427453"]]
924
925 (((
926 (% _msthash="506255" _msttexthash="381992" %)**Downlink Command: 0x01**
927 )))
928
929 (((
930 (% _msthash="506256" _msttexthash="1996592" %)
931 Format: Command Code (0x01) followed by 3 bytes time value.
932 )))
933
934 (((
935 (% _msthash="506257" _msttexthash="12934649" %)
936 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
937 )))
938
939 * (((
940 (% _msthash="903322" _msttexthash="3250546" %)
941 **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
942 )))
943 * (((
944 (% _msthash="903323" _msttexthash="3253315" %)
945 **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
946 )))
947
948 == (% _msthash="614770" _msttexthash="578240" %)4.2 Set External Sensor Mode(%%) ==
949
950 (% _msthash="315357" _msttexthash="975117" %)
951 Feature: Change External Sensor Mode.
952
953 (% _msthash="315358" _msttexthash="248118" %)**AT Command: AT+EXT**
954
955 [[image:image-20220523150759-3.png||_mstalt="432146"]]
956
957 (((
958 (% _msthash="506258" _msttexthash="387855" %)**Downlink Command: 0xA2**
959 )))
960
961 (((
962 (% _msthash="506259" _msttexthash="395629" %)
963 Total bytes: 2 ~~ 5 bytes
964 )))
965
966 (((
967 (% _msthash="506260" _msttexthash="104767" %)**Example:**
968 )))
969
970 * (((
971 (% _msthash="903324" _msttexthash="934973" %)
972 0xA201: Set external sensor type to E1
973 )))
974 * (((
975 (% _msthash="903325" _msttexthash="354770" %)
976 0xA209: Same as AT+EXT=9
977 )))
978 * (((
979 (% _msthash="903326" _msttexthash="639067" %)
980 0xA20702003c,Same as AT+SETCNT=60
981 )))
982
983 == (% _msthash="1562483" _msttexthash="1445717" %)4.3 Enable/Disable uplink Temperature probe ID(%%) ==
984
985 (% _msthash="315359" _msttexthash="2977572" %)
986 Feature: If PID is enabled, device will send the temperature probe ID on:
987
988 * First Packet after OTAA Join
989 * Every 24 hours since the first packet.
990
991 (% _msthash="315360" _msttexthash="658814" %)
992 PID is default set to disable (0)
993
994 (% _msthash="315361" _msttexthash="137488" %)**AT Command:**
995
996 [[image:image-20220523150928-4.png||_mstalt="431821"]]
997
998 (% _msthash="315362" _msttexthash="298038" %)**Downlink Command:**
999
1000 * 0xA800  **~-~->** AT+PID=0
1001 * 0xA801     **~-~->** AT+PID=1
1002
1003 == (% _msthash="266344" _msttexthash="242879" %)4.4 Set Password(%%) ==
1004
1005 (% _msthash="315363" _msttexthash="1170728" %)
1006 Feature: Set device password, max 9 digits
1007
1008 (% _msthash="315364" _msttexthash="295009" %)**AT Command: AT+PWORD**
1009
1010 [[image:image-20220523151052-5.png||_mstalt="428623"]]
1011
1012 (((
1013 (% _msthash="506261" _msttexthash="298038" %)**Downlink Command:**
1014 )))
1015
1016 (((
1017 (% _msthash="506262" _msttexthash="974311" %)
1018 No downlink command for this feature.
1019 )))
1020
1021 == (% _msthash="306956" _msttexthash="281918" %)4.5 Quit AT Command(%%) ==
1022
1023 (% _msthash="315365" _msttexthash="4616456" %)
1024 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1025
1026 (% _msthash="315366" _msttexthash="289120" %)**AT Command: AT+DISAT**
1027
1028 [[image:image-20220523151132-6.png||_mstalt="428649"]]
1029
1030 (% _msthash="315367" _msttexthash="298038" %)**Downlink Command:**
1031
1032 (% _msthash="315368" _msttexthash="974311" %)
1033 No downlink command for this feature.
1034
1035 == (% _msthash="362752" _msttexthash="334919" %)4.6 Set to sleep mode(%%) ==
1036
1037 (% _msthash="315369" _msttexthash="779688" %)
1038 Feature: Set device to sleep mode
1039
1040 (% _msthash="315370" _msttexthash="289783" %)**AT Command: AT+SLEEP**
1041
1042 [[image:image-20220523151218-7.png||_mstalt="430703"]]
1043
1044 (% _msthash="315371" _msttexthash="298038" %)**Downlink Command:**
1045
1046 * There is no downlink command to set to Sleep mode.
1047
1048 == (% _msthash="336557" _msttexthash="309712" %)4.7 Set system time(%%) ==
1049
1050 (% _msthash="315372" _msttexthash="2565524" %)
1051 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1052
1053 (% _msthash="315373" _msttexthash="137488" %)**AT Command:**
1054
1055 [[image:image-20220523151253-8.png||_mstalt="430677"]]
1056
1057 (% _msthash="315374" _msttexthash="298038" %)**Downlink Command:**
1058
1059 (% _msthash="315375" _msttexthash="2898571" %)
1060 0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1061
1062 == (% _msthash="376779" _msttexthash="348712" %)4.8 Set Time Sync Mode(%%) ==
1063
1064 (((
1065 (% _msthash="506263" _msttexthash="11748321" %)
1066 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1067 )))
1068
1069 (((
1070 (% _msthash="506264" _msttexthash="6530264" %)
1071 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.
1072 )))
1073
1074 (((
1075 (% _msthash="506265" _msttexthash="137488" %)**AT Command:**
1076 )))
1077
1078 [[image:image-20220523151336-9.png||_mstalt="431717"]]
1079
1080 (% _msthash="315376" _msttexthash="298038" %)**Downlink Command:**
1081
1082 (% _msthash="315377" _msttexthash="479648" %)
1083 0x28 01 ~/~/ Same As AT+SYNCMOD=1
1084
1085 (% _msthash="315378" _msttexthash="479076" %)
1086 0x28 00 ~/~/ Same As AT+SYNCMOD=0
1087
1088 == (% _msthash="536432" _msttexthash="502528" %)4.9 Set Time Sync Interval(%%) ==
1089
1090 (% _msthash="315379" _msttexthash="3065777" %)
1091 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1092
1093 (% _msthash="315380" _msttexthash="137488" %)**AT Command:**
1094
1095 [[image:image-20220523151411-10.png||_mstalt="449696"]]
1096
1097 (% _msthash="315381" _msttexthash="298038" %)**Downlink Command:**
1098
1099 (% _msthash="315382" _msttexthash="590044" %)
1100 0x29 0A ~/~/ Same as AT+SYNCTDC=0x0A
1101
1102 == (% _msthash="927901" _msttexthash="882570" %)4.10 Print data entries base on page.(%%) ==
1103
1104 (% _msthash="315383" _msttexthash="3233334" %)
1105 Feature: Print the sector data from start page to stop page (max is 416 pages).
1106
1107 (% _msthash="315384" _msttexthash="264953" %)**AT Command: AT+PDTA**
1108
1109 [[image:image-20220523151450-11.png||_mstalt="451035"]]
1110
1111 (% _msthash="315385" _msttexthash="298038" %)**Downlink Command:**
1112
1113 (% _msthash="315386" _msttexthash="799539" %)
1114 No downlink commands for feature
1115
1116 == (% _msthash="788762" _msttexthash="747149" %)4.11 Print last few data entries.(%%) ==
1117
1118 (% _msthash="315387" _msttexthash="1101009" %)
1119 Feature: Print the last few data entries
1120
1121 (% _msthash="315388" _msttexthash="288522" %)**AT Command: AT+PLDTA**
1122
1123 [[image:image-20220523151524-12.png||_mstalt="452101"]]
1124
1125 (% _msthash="315389" _msttexthash="298038" %)**Downlink Command:**
1126
1127 (% _msthash="315390" _msttexthash="799539" %)
1128 No downlink commands for feature
1129
1130 == (% _msthash="437814" _msttexthash="408057" %)4.12 Clear Flash Record(%%) ==
1131
1132 (% _msthash="315391" _msttexthash="1609075" %)
1133 Feature: Clear flash storage for data log feature.
1134
1135 (% _msthash="315392" _msttexthash="311415" %)**AT Command: AT+CLRDTA**
1136
1137 [[image:image-20220523151556-13.png||_mstalt="454129"]]
1138
1139 (% _msthash="315393" _msttexthash="388193" %)**Downlink Command: 0xA3**
1140
1141 * Example: 0xA301 ~/~/Same as AT+CLRDTA
1142
1143 == (% _msthash="740532" _msttexthash="701363" %)4.13 Auto Send None-ACK messages(%%) ==
1144
1145 (% _msthash="315394" _msttexthash="51837149" %)
1146 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.
1147
1148
1149 (% _msthash="315395" _msttexthash="334256" %)**AT Command: AT+PNACKMD**
1150
1151 (% _msthash="315396" _msttexthash="734682" %)
1152 The default factory setting is 0
1153
1154 (% border="1" style="background-color:#ffffcc; color:green; width:450px" %)
1155 |=(% style="width: 171px;" %)(% _msthash="1231737" _msttexthash="251862" %)**Command Example**|=(% style="width: 219px;" %)(% _msthash="1231738" _msttexthash="116025" %)**Function**|=(% style="width: 119px;" %)(% _msthash="1231739" _msttexthash="116831" %)**Response**
1156 |(% _msthash="1231321" _msttexthash="130455" style="width:171px" %)AT+PNACKMD=1|(% _msthash="1231322" _msttexthash="377026" style="width:219px" %)Poll None-ACK message|(% _msthash="1231323" _msttexthash="14989" style="width:119px" %)OK
1157
1158 (% _msthash="315397" _msttexthash="383981" %)**Downlink Command: 0x34**
1159
1160 * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1161
1162 = (% _msthash="568737" _msttexthash="502827" %)5. Battery & How to replace(%%) =
1163
1164 == (% _msthash="265486" _msttexthash="242073" %)5.1 Battery Type(%%) ==
1165
1166 (% _msthash="315398" _msttexthash="33754799" %)
1167 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.
1168
1169 (((
1170 The discharge curve is not linear so can’t simply use percentage to show the battery level. Below is the battery performance.
1171 [[image:image-20220515075034-1.png||_mstalt="428961" height="208" width="644"]]
1172 )))
1173
1174 (((
1175 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1176
1177 )))
1178
1179 == (% _msthash="353795" _msttexthash="326703" %)5.2 Replace Battery(%%) ==
1180
1181 (% _msthash="315399" _msttexthash="11289278" %)
1182 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.
1183
1184 [[image:image-20220515075440-2.png||_mstalt="429546" height="338" width="272"]][[image:image-20220515075625-3.png||_mstalt="431574" height="193" width="257"]]
1185
1186 == (% _msthash="494650" _msttexthash="462241" %)5.3 Battery Life Analyze(%%) ==
1187
1188 (((
1189 (% _msthash="506268" _msttexthash="35479028" %)
1190 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:
1191 https:~/~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf
1192 )))
1193
1194 = (% _msthash="183170" _msttexthash="163566" %)6. Order Info(%%) =
1195
1196 (((
1197 (% _msthash="506269" _msttexthash="432432" %)
1198 Part Number: (% style="color:#4f81bd" %)** LHT65N-XX-YY**
1199 )))
1200
1201 (((
1202 (% _msthash="506270" _msttexthash="686946" %)
1203 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1204 )))
1205
1206 * (((
1207 (% _msthash="903327" _msttexthash="393341" %)
1208 (% style="color:#4f81bd" %)** AS923**(%%): LoRaWAN AS923 band
1209 )))
1210 * (((
1211 (% _msthash="903328" _msttexthash="394576" %)
1212 (% style="color:#4f81bd" %)** AU915**(%%): LoRaWAN AU915 band
1213 )))
1214 * (((
1215 (% _msthash="903329" _msttexthash="393913" %)
1216 (% style="color:#4f81bd" %)** EU433**(%%): LoRaWAN EU433 band
1217 )))
1218 * (((
1219 (% _msthash="903330" _msttexthash="399087" %)
1220 (% style="color:#4f81bd" %)** EU868**(%%): LoRaWAN EU868 band
1221 )))
1222 * (((
1223 (% _msthash="903331" _msttexthash="395109" %)
1224 (% style="color:#4f81bd" %)** KR920**(%%): LoRaWAN KR920 band
1225 )))
1226 * (((
1227 (% _msthash="903332" _msttexthash="400842" %)
1228 (% style="color:#4f81bd" %)** US915**(%%): LoRaWAN US915 band
1229 )))
1230 * (((
1231 (% _msthash="903333" _msttexthash="396487" %)
1232 (% style="color:#4f81bd" %)** IN865**(%%): LoRaWAN IN865 band
1233 )))
1234 * (((
1235 (% _msthash="903334" _msttexthash="390923" %)
1236 (% style="color:#4f81bd" %)** CN470**(%%): LoRaWAN CN470 band
1237 )))
1238
1239 (((
1240 (% _msthash="506271" _msttexthash="443495" %)
1241 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1242 )))
1243
1244 * (((
1245 (% _msthash="903335" _msttexthash="720135" %)
1246 (% style="color:#4f81bd" %)**E3**(%%): External Temperature Probe
1247 )))
1248
1249 = (% _msthash="233363" _msttexthash="211237" %)7. Packing Info(%%) =
1250
1251 (((
1252 (% _msthash="506272" _msttexthash="295386" %)
1253 **Package Includes**:
1254 )))
1255
1256 * (((
1257 (% _msthash="903336" _msttexthash="1033149" %)
1258 LHT65N Temperature & Humidity Sensor x 1
1259 )))
1260 * (((
1261 (% _msthash="903337" _msttexthash="242567" %)
1262 Program cable x 1
1263 )))
1264 * (((
1265 (% _msthash="903338" _msttexthash="544167" %)
1266 Optional external sensor
1267 )))
1268
1269 (((
1270 (% _msthash="506273" _msttexthash="403858" %)
1271 **Dimension and weight**:
1272 )))
1273
1274 * (((
1275 (% _msthash="903339" _msttexthash="391807" %)
1276 Device Size:  13.5 x 7 x 3 cm
1277 )))
1278 * (((
1279 (% _msthash="903340" _msttexthash="285298" %)
1280 Device Weight: 105g
1281 )))
1282 * (((
1283 (% _msthash="903341" _msttexthash="562926" %)
1284 Package Size / pcs : 14.5 x 8 x 5 cm
1285 )))
1286 * (((
1287 (% _msthash="903342" _msttexthash="227084" %)
1288 Weight / pcs : 170g
1289 )))
1290
1291 = (% _msthash="198744" _msttexthash="178776" %)8. FCC Warning(%%) =
1292
1293 (((
1294 (% _msthash="506274" _msttexthash="6034353" %)
1295 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1296 )))
1297
1298 (((
1299 (% _msthash="506275" _msttexthash="44097638" %)
1300 (1) This device may not cause harmful interference；
1301 )))
1302
1303 (((
1304 (% _msthash="506276" _msttexthash="7559773" %)
1305 (2) this device must accept any interference received, including interference that may cause undesired operation.
1306 )))

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