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Version 201.1 by Xiaoling on 2022/06/21 11:41
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8 (% _msthash="315238" _msttexthash="18964465" _mstvisible="3" %)**Table of Contents：**
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17 = (% _msthash="277498" _msttexthash="253045" _mstvisible="3" %)1.  Introduction(%%) =
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19 (% _mstvisible="1" %)
20 == (% _msthash="1532895" _msttexthash="1426958" _mstvisible="3" %)1.1  What is LHT52 Temperature & Humidity Sensor(%%) ==
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23 (((
24 (% _msthash="506051" _msttexthash="24333127" _mstvisible="2" %)
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26
27 The Dragino LHT52 Temperature & Humidity sensor is a Long Range LoRaWAN Sensor. It includes a (% style="color:blue" %)**built-in Temperature & Humidity sensor** (%%)and has a USB Type-C sensor connector to connect to external sensors such as external Temperature Sensor.
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29 LHT52 (% style="color:blue" %)**senses environment temperature and humidity**(%%) and send these values via long-range wireless LoRaWAN protocol. It targets professional wireless sensor network applications such as food service, smart metering, smart cities, building automation, and so on.
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31 LHT52 supports(% style="color:blue" %)** 2 x AAA batteries **(%%)and works for a long time up to several years. Use can replace the batteries easily after they are finished.
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33 LHT52 is fully compatible with LoRaWAN v1.0.3 protocol, it can work with standard LoRaWAN gateway.
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35 LHT52 supports(% style="color:blue" %)** Datalog feature** (%%)to make sure users won’t miss sensor data. It records sensor value for every uplink. These values can be retrieved by LoRaWAN server via downlink command.
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37 LHT52 supports(% style="color:blue" %)** temperature alarm feature**(%%). It can uplink alarm in a short interval while temperature exceeds preset limits.
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39 *Battery life depends how often to send data, please see [[battery analyzer>>||anchor="H4.2A0PowerConsumptionAnalyze"]].
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42 [[image:1655774519494-861.png]]
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47 (% _msthash="506056" _msttexthash="5557097" _mstvisible="2" %)
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51 (% _mstvisible="1" %)
52 == (% _msthash="182559" _msttexthash="163319" _mstvisible="3" %)1.2  Features(%%) ==
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55 * Wall Attachable.
56 * LoRaWAN v1.0.3 Class A protocol.
57 * Built-in Temperature & Humidity sensor
58 * Optional External Probe
59 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
60 * AT Commands to change parameters
61 * Remote configure parameters via LoRaWAN Downlink
62 * Firmware upgradable via program port
63 * Support 2 x AAA LR03 batteries.
64 * Datalog feature
65 * IP Rating: IP52
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70 (% _mstvisible="1" %)
71 == (% _msthash="323570" _msttexthash="297635" _mstvisible="3" %)1.3  Specification(%%) ==
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79 (% _msthash="506057" _msttexthash="671437" _mstvisible="4" %)**Built-in Temperature Sensor:**
80 )))
81
82 * Resolution: 0.01 °C
83 * Accuracy Tolerance: Typ ±0.3 °C
84 * Long Term Drift: < 0.02 °C/yr
85 * Operating Range: -20 ~~ 50 °C
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92 (% _mstvisible="2" %)
93 (% _msthash="506058" _msttexthash="544453" _mstvisible="4" %)**Built-in Humidity Sensor:**
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95
96 * Resolution: 0.1 %RH
97 * Accuracy Tolerance: Typ ±3 %RH
98 * Long Term Drift: < 0.02 °C/yr
99 * Operating Range: 0 ~~ 99.0 %RH(no Dew)
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104 (% _mstvisible="2" %)
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113 (% _msthash="903004" _msttexthash="592540" _mstvisible="4" %)
114 == 1.4  Power Consumption ==
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116 LHT52 (without external sensor): Idle: 5uA, Transmit: max 110mA
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118 LHT52 + External Temperature Probe (AS-01): Idle: 6uA, Transmit: max 110mA.
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120
121
122 == 1.5  Storage & Operation Temperature ==
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124 -20°C to +50°C
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126
127
128 == 1.6  Applications ==
129
130 * Smart Buildings & Home Automation
131 * Logistics and Supply Chain Management
132 * Smart Metering
133 * Smart Agriculture
134 * Smart Cities
135 * Smart Factory
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138 )))
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140 (% _mstvisible="1" %)
141 = (% _msthash="655759" _msttexthash="618618" _mstvisible="3" %)2.  O(%%)peration Mode =
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143 (% _mstvisible="1" %)
144 == (% _msthash="462371" _msttexthash="410332" _mstvisible="3" %)2.1 How it work?(%%) ==
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149 Each LHT52 is shipped with a worldwide unique set of LoRaWAN OTAA keys. To use LHT52 in a LoRaWAN network, user needs to input the OTAA keys in LoRaWAN network server. After this, if LHT52 is under this LoRaWAN network coverage, LHT52 can join the LoRaWAN network and start to transmit sensor data. The default period for each uplink is** 20 minutes**.
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161 (% _mstvisible="1" %)
162 == (% _msthash="514384" _msttexthash="458666" _mstvisible="3" %)2.2 How to Activate LHT52?(%%) ==
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164 (% style="color:red" %)** 1.  Open enclosure from below position.**
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166 [[image:image-20220621093835-1.png]]
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169 (% style="color:red" %)** 2.  Insert 2 x AAA LR03 batteries.**
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171 [[image:image-20220621093835-2.png]]
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174 (% style="color:red" %)** 3.  Press the reset button to activate device.**
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176 [[image:image-20220621093835-3.png]]
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179 User can check [[LED Status>>||anchor="H2.8A0LEDIndicator"]] to know the working state of LHT52.
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183 (% _mstvisible="1" %)
184 == (% _msthash="882726" _msttexthash="838526" _mstvisible="3" %)2.3 Example to join LoRaWAN network(%%) ==
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186 This section shows an example for how to join the [[TheThingsNetwork>>url:https://www.thethingsnetwork.org/]] LoRaWAN IoT server. Usages with other LoRaWAN IoT servers are of similar procedure.
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188 (% _mstvisible="1" class="wikigeneratedid" %)
189 [[image:1655775912928-657.png]]
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191 Assume the DLOS8 is already set to connect to [[TTN V3 network >>url:https://eu1.cloud.thethings.network/]]. We need to add the LHT52 device in TTN V3 portal. 
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194 (% style="color:blue" %)**Step 1**(%%):  Create a device in TTN V3 with the OTAA keys from LHT52.
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196 Each LHT52 is shipped with a sticker with the default DEV EUI as below:
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199 [[image:image-20220617150003-1.jpeg]]
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202 Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
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204 Add APP EUI in the application.
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206 choose to create the device manually.
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208 Add APP KEY and DEV EUI
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211 (% _msthash="315245" _msttexthash="642889" _mstvisible="1" %)
212 [[image:image-20220522232916-3.png||_mstalt="430495" _mstvisible="3"]]
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214 (% _msthash="315245" _msttexthash="642889" _mstvisible="1" %)
215 [[image:1655776122894-257.png]]
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219 **Default mode OTAA**
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223 [[image:1655776241177-240.png]]
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227 (% style="color:blue" %)**Step 2**(%%):  Use ACT button to activate LHT52 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.
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229 [[image:image-20220621095134-4.png]]
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233 (% _mstvisible="1" %)
234 == (% _msthash="320879" _msttexthash="294970" _mstvisible="3" %)2.4  Uplink Payload(%%) ==
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236 Uplink payloads include two types: Valid Sensor Value and other status / control command.
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238 * Valid Sensor Value: Use FPORT=2
239 * Other control command: Use FPORT other than 2.
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243 (% _mstvisible="1" %)
244 === (% _msthash="360269" _msttexthash="333762" _mstvisible="3" %)2.4.1  U(%%)plink FPORT~=5, Device Status ===
245
246 Uplink the device configures with FPORT=5. Once LHT52 Joined the network, it will uplink this message to the server. After first uplink, LHT52 will uplink Device Status every 12 hours.
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248 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:462px" %)
249 |=(% style="width: 99px;" %)**Size (bytes)**|=(% style="width: 62px;" %)**1**|=(% style="width: 80px;" %)**2**|=(% style="width: 82px;" %)**1**|=(% style="width: 85px;" %)**1**|=(% style="width: 46px;" %)**2**
250 |(% style="width:99px" %)**Value**|(% style="width:62px" %)Sensor Model|(% style="width:80px" %)Firmware Version|(% style="width:82px" %)Frequency Band|(% style="width:85px" %)Sub-band|(% style="width:46px" %)BAT
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252 [[image:image-20220621100550-5.png]]
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254 Example Payload (FPort=5):  [[image:image-20220621105116-11.png]]
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257 (% style="color:#4472c4" %)**Sensor Model**(%%): For LHT52, this value is 0x09.
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260 (% style="color:#4472c4" %)**Firmware Version**(%%): 0x0100, Means: v1.0.0 version.
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263 (% style="color:#4472c4" %)**Frequency Band**:
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265 *0x01: EU868
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267 *0x02: US915
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269 *0x03: IN865
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271 *0x04: AU915
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273 *0x05: KZ865
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275 *0x06: RU864
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277 *0x07: AS923
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279 *0x08: AS923-1
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281 *0x09: AS923-2
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283 *0x0a: AS923-3
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286 (% style="color:#4472c4" %)**Sub-Band**(%%): value 0x00 ~~ 0x08(only for CN470, AU915,US915. Others are0x00)
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289 (% style="color:#4472c4" %)**BAT**(%%): shows the battery voltage for LHT52.
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291 Ex1: 0x0B3A = 2874mV
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295 Use can also get the Device Status uplink through the downlink command:
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297 (% style="color:#4472c4" %)**Downlink:  0x2301**
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300 [[image:image-20220621100550-6.png||height="504" width="1491"]]
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303
304
305 === 2.4.2 plink FPORT~=2, Real time sensor value ===
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307 LHT52 will send this uplink after Device Status uplink once join LoRaWAN network successfully. And it will periodically send this uplink. Default interval is 20 minutes and [[can be changed>>||anchor="H3.1A0DownlinkCommandSet"]].
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309 Uplink uses FPORT=2 and every 20 minutes send one uplink by default.
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311 (% _mstvisible="1" border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:426px" %)
312 (% _mstvisible="3" %)|=(% _mstvisible="4" style="width: 97px;" %)(% _mstvisible="5" %)
313 (((
314 (% _mstvisible="6" %)
315 (% _msthash="1817478" _msttexthash="161122" _mstvisible="8" %)**Size(bytes)**
316 )))|=(% _mstvisible="4" style="width: 39px;" %)(% _mstvisible="5" %)
317 (((
318 (% _mstvisible="6" %)
319 (% _msthash="1817479" _msttexthash="4550" _mstvisible="8" %)**2**
320 )))|=(% _mstvisible="4" style="width: 100px;" %)(% _mstvisible="5" %)
321 (((
322 (% _mstvisible="6" %)
323 (% _msthash="1817480" _msttexthash="4550" _mstvisible="8" %)**2**
324 )))|=(% _mstvisible="4" style="width: 77px;" %)(% _mstvisible="5" %)
325 (((
326 (% _mstvisible="6" %)
327 (% _msthash="1817481" _msttexthash="4550" _mstvisible="8" %)**2**
328 )))|=(% _mstvisible="4" style="width: 47px;" %)(% _mstvisible="5" %)
329 (((
330 (% _mstvisible="6" %)
331 (% _msthash="1817482" _msttexthash="4459" _mstvisible="8" %)**1**
332 )))|=(% _mstvisible="4" style="width: 51px;" %)(% _mstvisible="5" %)
333 (((
334 (% _mstvisible="6" %)
335 (% _msthash="1817483" _msttexthash="4732" _mstvisible="8" %)**4**
336 )))
337 (% _mstvisible="3" %)|(% _mstvisible="4" style="width:97px" %)(% _mstvisible="5" %)
338 (((
339 (% _mstvisible="6" %)
340 (% _msthash="1817484" _msttexthash="60203" _mstvisible="8" %)**Value**
341 )))|(% _mstvisible="4" style="width:39px" %)(% _mstvisible="5" %)
342 (((
343 (% _mstvisible="6" %)
344 [[Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224742" _msttexthash="405769" _mstvisible="8"]]
345 )))|(% _mstvisible="4" style="width:100px" %)(% _mstvisible="5" %)
346 (((
347 (% _mstvisible="6" %)
348 (((
349 (% _mstvisible="7" %)
350 [[Humidity>>||anchor="H2.4.4Built-inHumidity" _msthash="2224744" _msttexthash="117429" _mstvisible="8"]]
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352 (% _mstvisible="7" %)
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354 )))
355 )))|(% _mstvisible="4" style="width:77px" %)(% _mstvisible="5" %)
356 (((
357 (% _mstvisible="6" %)
358 (((
359 (% _mstvisible="7" %)
360 [[External Temperature>>||anchor="H2.4.3Built-inTemperature" _msthash="2224742" _msttexthash="405769" _mstvisible="8"]]
361 )))
362 )))|(% _mstvisible="4" style="width:47px" %)(% _mstvisible="5" %)
363 (((
364 (% _mstvisible="6" %)
365 [[Ext>>||anchor="H2.4.5Ext23" _msthash="1817486" _msttexthash="32331" _mstvisible="7"]] #
366 )))|(% _mstvisible="4" style="width:51px" %)(((
367 [[Unix TimeStamp>>||anchor="H2.4.6Extvalue" _msthash="1817487" _msttexthash="116545" _mstvisible="7"]]
368 )))
369
370 **Temperature:**
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372 [[image:image-20220621101526-7.png]]
373
374 Example Payload (FPort=2):
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376 08 CD 02 20 7F FF 01 61 CD 4E DD
377
378
379 ==== **Temperature & External Temperature:** ====
380
381 * Example1:  0x08CD/100=22.53℃
382 * Example2:  (0xF5C6-65536)/100=-26.18℃
383
384
385 ==== **Humidity:** ====
386
387 * Humidity:    0x0220/10=54.4%
388
389
390 ==== **Extension #** ====
391
392 Bytes for External Sensor:
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394 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:310px" %)
395 |=(% style="width: 103px;" %)**EXT # Value**|=(% style="width: 203px;" %)**External Sensor Probe**
396 |(% style="width:103px" %)0x01|(% style="width:203px" %)Sensor AS-01, Temperature
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400 (% _mstvisible="1" %)
401 === (% _msthash="600769" _msttexthash="565838" _mstvisible="3" %)2.4.3  U(%%)plink FPORT~=3, Datalog sensor value ===
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403 LHT52 stores sensor value and user can retrieve these history value via downlink command. The Datalog sensor value are sent via FPORT=3.
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405 [[image:image-20220621101659-8.png]]
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407
408 * Each data entry is 11 bytes, to save airtime and battery, LHT52 will send max bytes according to the current DR and Frequency bands.
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410 For example, in US915 band, the max payload for different DR is:
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412 1. DR0: max is 11 bytes so one entry of data
413 1. DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
414 1. DR2: total payload includes 11 entries of data
415 1. DR3: total payload includes 22 entries of data.
416
417 (% style="color:red" %)**Notice**: LHT52 will save 178 set of history data, If device doesn't have any data in the polling time. Device will uplink 11 bytes of 0.
418
419 See more info about the [[Datalog feature>>||anchor="H"]].
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423 (% _mstvisible="1" %)
424 === (% _msthash="475891" _msttexthash="445120" _mstvisible="3" %)2.4.4  U(%%)plink FPORT~=4, DS18B20 ID ===
425
426 User can get external DS18B20 ID through the downlink command.
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428 Downlink:0x2302
429
430 [[image:image-20220621101853-9.png]]
431
432 Example Payload (FPort=4):
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434 28 86 63 B2 00 00 00 9F
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436
437 The External DS18B20 ID is 0x28 86 63 B2 00 00 00 9F
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441 (% _mstvisible="1" %)
442 === (% _msthash="116532" _msttexthash="87958" _mstvisible="3" %)2.4.5  D(%%)ecoder in TTN V3 ===
443
444 In LoRaWAN protocol, the uplink payload is HEX format, user need to add a payload formatter/decoder in LoRaWAN Server to get human friendly string.
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446 In TTN , add formatter as below:
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448 [[image:image-20220621102026-10.png]]
449
450 (((
451 Please check the decoder from this link:
452
453 (((
454 [[https:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LHT52/Decoder/>>url:https://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LHT52/Decoder/]]
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458 (% _mstvisible="1" %)
459 == (% _msthash="487097" _msttexthash="454818" _mstvisible="3" %)2.5 Show data on Datacake(%%) ==
460
461 Datacake IoT platform provides a human friendly interface to show the sensor data in charts, 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:
462
463
464 **Step 1**: Be sure that your device is programmed and properly connected to the LoRaWAN network.
465
466 **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.
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468 ~1. Add Datacake:
469
470 2. Select default key as Access Key:
471
472 3. In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/]]) , add LHT52:
473
474  Please refer to the figure below
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477 [[image:image-20220621112422-1.png]]
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479
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481 Log in to DATACAKE, copy the API under the account[[image:image-20220621112422-2.png]]
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484 [[image:image-20220621112422-3.png]]
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486
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488 [[image:image-20220621112422-4.png]]
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491 [[image:image-20220621112422-5.png]]
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494 [[image:image-20220621112422-6.png]]
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497 [[image:image-20220621112422-7.png]]
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499 [[image:image-20220621112422-8.png]]
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501 [[image:image-20220621112422-9.png]]
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503
504 [[image:image-20220621112422-10.png]]
505
506
507 Copy and paste the [[TTN decoder>>url:https://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LHT52/Decoder/]] here and save
508
509 [[image:image-20220621112422-11.png]]
510
511
512 Visual widgets please read the DATACAKE documentation
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514 [[image:image-20220621112422-12.png]]
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516
517
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519 (% _mstvisible="1" %)
520 == (% _msthash="350454" _msttexthash="323544" _mstvisible="3" %)2.6  Datalog Feature(%%) ==
521
522 (% _msthash="315262" _msttexthash="32283004" _mstvisible="1" %)
523 When user want to retrieve sensor value, he can send a poll command from the IoT platform to ask sensor to send value in the required time slot.
524
525
526 (% _mstvisible="1" %)
527 === (% _msthash="369915" _msttexthash="342797" _mstvisible="3" %)2.6.1  Unix TimeStamp(%%) ===
528
529 (% _msthash="315264" _msttexthash="1182285" _mstvisible="1" %)
530 Unix TimeStamp shows the sampling time of uplink payload. format base on
531
532 (% _mstvisible="1" %)
533 [[image:image-20220523001219-11.png||_mstalt="450450" _mstvisible="3" height="97" width="627"]]
534
535
536 (% _mstvisible="1" %)
537 (((
538 (% _msthash="506068" _msttexthash="2717234" _mstvisible="2" %)
539 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/||_mstvisible="3"]] :
540 )))
541
542 (% _mstvisible="1" %)
543 (((
544 For example: if the Unix Timestamp we got is hex 0x60137afd, we can convert it to Decimal: 1611889405. and then convert to the time: 2021 – Jan ~-~- 29 Friday 03:03:25 (GMT)
545 )))
546
547 (% _mstvisible="1" %)
548 [[image:1655782409139-256.png]]
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551 (% _mstvisible="1" %)
552 (((
553 (% _msthash="506076" _msttexthash="7889297" _mstvisible="2" %)
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555 )))
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557 (% _mstvisible="1" %)
558 === (% _msthash="460759" _msttexthash="430001" _mstvisible="3" %)2.6.2  Poll sensor value(%%) ===
559
560 (% _msthash="315266" _msttexthash="4955821" _mstvisible="1" %)
561 User can poll sensor value based on timestamps from the server. Below is the downlink command.
562
563 (% _mstvisible="1" %)
564 [[image:image-20220523152302-15.png||_mstalt="451581" _mstvisible="3"]]
565
566 (% _mstvisible="1" %)
567 (((
568 (% _msthash="506077" _msttexthash="14670916" _mstvisible="2" %)
569 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.
570 )))
571
572 (% _mstvisible="1" %)
573 (((
574 (% _mstvisible="2" %)
575 For example, downlink command [[image:image-20220621113526-13.png]] (% _mstvisible="3" style="display:none" %)
576 )))
577
578 (% _mstvisible="1" %)
579 (((
580 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00's data
581
582 Uplink Internal =5s，means LHT52 will send one packet every 5s. range 5~~255s.
583
584 (% _msthash="506078" _msttexthash="6907459" _mstvisible="2" %)
585
586 )))
587
588
589 (% _mstvisible="1" %)
590 === (% _msthash="650923" _msttexthash="614185" _mstvisible="3" %)2.6.5 Datalog Uplink payload(%%) ===
591
592 See [[Uplink FPORT=3, Datalog sensor value>>path:#Datalog_Payload]]
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594
595
596 (% _mstvisible="1" style="text-align: left;" %)
597 == (% _msthash="244504" _msttexthash="177736" _mstvisible="3" %)2.7 Alarm Mode(%%) ==
598
599 (% _msthash="315279" _msttexthash="16493308" _mstvisible="1" style="text-align: left;" %)
600 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.
601
602 (% _mstvisible="1" %)
603 (((
604 (% _mstvisible="2" style="text-align: left;" %)
605 (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.
606 )))
607
608 (% _mstvisible="1" style="text-align: left;" %)
609 (% _msthash="315280" _msttexthash="363480" _mstvisible="3" %)**AT COMMAND FOR ALARM MODE:**
610
611 (% _mstvisible="1" class="box infomessage" %)
612 (((
613 (% _msthash="506086" _msttexthash="2193529" _mstvisible="2" style="text-align: left;" %)
614 (% _istranslated="1" _mstmutation="1" _mstvisible="4" %)**AT+WMOD=1**(%%):  Enable/disable alarm mode. (0: Disabled, 1: Enabled)
615
616 (% _msthash="506087" _msttexthash="3671265" _mstvisible="2" style="text-align: left;" %)
617 (% _istranslated="1" _mstvisible="4" %)**AT+CITEMP=1**(%%):  The interval between checking the alarm temperature. (In minutes)
618
619 (% _msthash="506088" _msttexthash="3310437" _mstvisible="2" style="text-align: left;" %)
620 (% _istranslated="1" _mstvisible="4" %)**AT+ARTEMP**(%%):  Gets or sets the alarm range of the internal temperature sensor
621
622 (% _mstvisible="2" style="text-align: left;" %)
623 (% _istranslated="1" _mstmutation="1" %)**AT+ARTEMP=？ **(%%):  Gets the alarm range of the internal temperature sensor(% _mstvisible="3" style="display:none" %)
624
625 (% _msthash="506089" _msttexthash="3590067" _mstvisible="2" style="text-align: left;" %)
626 (% _istranslated="1" _mstvisible="4" %)**AT+ARTEMP=45,105**(%%):  Set the internal temperature sensor alarm range from 45 to 105.
627 )))
628
629
630
631 (% _msthash="72514" _msttexthash="253149" _mstvisible="1" style="text-align: left;" %)
632 == (% _istranslated="1" _msthash="168103" _msttexthash="59969" _mstvisible="3" %)2.8 (%%)LED Indicator ==
633
634 (% _mstvisible="1" %)
635 (((
636 (% _msthash="197769" _msttexthash="2924142" style="text-align: left;" %)
637 The LHT65 has a triple color LED which for easy showing different stage .
638
639 (% _msthash="289211" _msttexthash="3402659" style="text-align: left;" %)
640 While user press ACT button, the LED will work as per LED status with ACT button.
641 )))
642
643 (% _mstvisible="1" %)
644 (((
645 (% _msthash="506092" _msttexthash="521573" _mstvisible="2" style="text-align: left;" %)
646 In a normal working state:
647 )))
648
649 (% _mstvisible="1" %)
650 * (% _mstvisible="3" %)
651 (((
652 (% _msthash="903005" _msttexthash="1647204" _mstvisible="4" %)
653 For each uplink, the BLUE LED or RED LED will blink (% _msthash="903005" _msttexthash="46254" _mstvisible="3" %)once(%%).(% style="display:none" %)
654
655 (% _msthash="197771" _msttexthash="1202526" %)
656 (% _msthash="903005" _msttexthash="1647204" _mstvisible="3" %)BLUE LED when external sensor is connected
657 )))
658 * (% _mstvisible="3" %)
659 (((
660 (% _msthash="903007" _msttexthash="1334749" _mstvisible="4" %)
661 RED LED when external sensor is not connected
662 )))
663 * (% _mstvisible="3" %)
664 (((
665 (% _msthash="903008" _msttexthash="1875640" _mstvisible="4" %)
666 For each success downlink, the PURPLE LED will blink once
667
668
669
670 )))
671
672 (% _mstvisible="1" style="text-align: left;" %)
673 == (% _msthash="112034" _msttexthash="277511" _mstvisible="3" %)2.9 installation(%%) ==
674
675 (% _mstvisible="1" %)
676 [[image:image-20220516231650-1.png||_mstalt="428597" _mstvisible="3" height="436" width="428"]]
677
678
679 (% _msthash="604150" _msttexthash="563212" _mstvisible="1" style="text-align: left;" %)
680 = (% _msthash="401388" _msttexthash="566956" _mstvisible="3" %)3. S(% _msthash="903005" _msttexthash="1647204" _mstvisible="2" %)ensors(% _msthash="401388" _msttexthash="40417" _mstvisible="3" %) and A(% _msthash="903005" _msttexthash="1647204" _mstvisible="2" %)ccessories(%%) =
681
682 (% _msthidden="1" _mstvisible="1" style="text-align: left;" %)
683 == (% _msthash="903005" _msttexthash="1647204" _mstvisible="2" %)3.1(% _msthash="487110" _msttexthash="455390" %) E2 Extension Cable(%%) ==
684
685 [[image:image-20220619092222-1.png||height="182" width="188"]][[image:image-20220619092313-2.png||height="182" width="173"]]
686
687 1m long breakout cable for LHT65N
688
689 [[image:image-20220619092421-3.png||height="371" width="529"]]
690
691
692
693 (% _msthidden="1" _mstvisible="1" style="text-align: left;" %)
694 == (% _msthash="903005" _msttexthash="1647204" _mstvisible="2" %)3.1(% _msthash="487110" _msttexthash="455390" %) E3 Temperature Probe(%%) ==
695
696 (% _mstvisible="1" %)
697 [[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"]]
698
699
700 (% _msthash="315354" _msttexthash="1270971" _mstvisible="1" style="text-align: left;" %)
701 Temperature sensor with 2 meters cable long
702
703 (% _mstvisible="1" %)
704 * Resolution: 0.0625 °C
705 * ±0.5°C accuracy from -10°C to +85°C
706 * ±2°C accuracy from -55°C to +125°C
707 * Operating Range: -40 ~~ 125 °C
708 * -55°C to 125°C
709 * Working voltage 2.35v ~~ 5v
710
711 (% _mstvisible="1" style="text-align: left;" %)
712 = (% _msthash="1940107" _msttexthash="1714063" _mstvisible="3" %)4. Configure LHT65N via AT command or LoRaWAN downlink(%%) =
713
714 (% _mstvisible="1" %)
715 (((
716 (% _msthash="506246" _msttexthash="2005926" _mstvisible="2" style="text-align: left;" %)
717 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
718 )))
719
720 (% _mstvisible="1" %)
721 * (% _mstvisible="3" %)
722 (((
723 (% _msthash="903318" _msttexthash="635544" _mstvisible="4" %)
724 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
725 )))
726 * (% _mstvisible="3" %)
727 (((
728 (% _msthash="903319" _msttexthash="3225859" _mstvisible="4" %)
729 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
730 )))
731
732 (% _mstvisible="1" %)
733 (((
734 (% _mstvisible="2" style="text-align: left;" %)
735
736 )))
737
738 (% _mstvisible="1" %)
739 (((
740 (% _msthash="506248" _msttexthash="2144051" _mstvisible="2" style="text-align: left;" %)
741 There are two kinds of commands to configure LHT65N, they are:
742 )))
743
744 (% _mstvisible="1" %)
745 (((
746 (% _mstvisible="2" style="text-align: left;" %)
747 (% _msthash="506249" _msttexthash="317850" _mstvisible="3" style="color:#4f81bd" %)* (% _msthash="506249" _mstmutation="1" _msttexthash="317850" _mstvisible="4" style="color:#4f81bd" %)**General Commands**(% _msthash="506249" _mstmutation="1" _msttexthash="317850" _mstvisible="3" style="color:#4f81bd" %).
748 )))
749
750 (% _mstvisible="1" %)
751 (((
752 (% _msthash="506250" _msttexthash="774527" _mstvisible="2" style="text-align: left;" %)
753 These commands are to configure:
754 )))
755
756 (% _mstvisible="1" %)
757 * (% _mstvisible="3" %)
758 (((
759 (% _msthash="903320" _msttexthash="1503580" _mstvisible="4" %)
760 General system settings like: uplink interval.
761 )))
762 * (% _mstvisible="3" %)
763 (((
764 (% _msthash="903321" _msttexthash="1244334" _mstvisible="4" %)
765 LoRaWAN protocol & radio-related commands.
766 )))
767
768 (% _mstvisible="1" %)
769 (((
770 (% _msthash="506251" _msttexthash="12349142" _mstvisible="2" style="text-align: left;" %)
771 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]]
772 )))
773
774 (% _mstvisible="1" %)
775 (((
776 (% _mstvisible="2" style="text-align: left;" %)
777
778 )))
779
780 (% _mstvisible="1" %)
781 (((
782 (% _mstvisible="2" style="text-align: left;" %)
783 (% _mstvisible="3" style="color:#4f81bd" %)* (% _msthash="506249" _mstmutation="1" _msttexthash="317850" _mstvisible="4" style="color:#4f81bd" %)**Commands special design for LHT65N**
784 )))
785
786 (% _mstvisible="1" %)
787 (((
788 (% _msthash="506254" _msttexthash="1501357" _mstvisible="2" style="text-align: left;" %)
789 These commands are only valid for LHT65N, as below:
790
791
792 (% _msthash="506254" _msttexthash="1501357" _mstvisible="2" style="text-align: left;" %)
793
794 )))
795
796 (% _mstvisible="1" style="text-align: left;" %)
797 == (% _msthash="708253" _msttexthash="668772" _mstvisible="3" %)4.1 Set Transmit Interval Time(%%) ==
798
799 (% _msthash="315355" _msttexthash="1659268" _mstvisible="1" style="text-align: left;" %)
800 Feature: Change LoRaWAN End Node Transmit Interval.
801
802 (% _mstvisible="1" style="text-align: left;" %)
803 (% _msthash="315244" _msttexthash="241696" style="color:#4f81bd" %)**AT Command: AT+TDC**
804
805 (% _mstvisible="1" %)
806 [[image:image-20220523150701-2.png||_mstalt="427453" _mstvisible="3"]]
807
808 (% _mstvisible="1" %)
809 (((
810 (% _mstvisible="2" style="text-align: left;" %)
811
812
813 (% _mstvisible="2" style="text-align: left;" %)
814 (% _msthash="506055" _msttexthash="381992" style="color:#4f81bd" %)**Downlink Command: 0x01**
815 )))
816
817 (% _mstvisible="1" %)
818 (((
819 (% _msthash="506256" _msttexthash="1996592" _mstvisible="2" style="text-align: left;" %)
820 Format: Command Code (0x01) followed by 3 bytes time value.
821 )))
822
823 (% _mstvisible="1" %)
824 (((
825 (% _msthash="506257" _msttexthash="12934649" _mstvisible="2" style="text-align: left;" %)
826 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
827 )))
828
829 (% _mstvisible="1" %)
830 * (% _mstvisible="3" %)
831 (((
832 (% _msthash="903322" _msttexthash="3250546" _mstvisible="4" %)
833 (% _mstvisible="5" %)**Example 1**(%%): Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
834 )))
835 * (% _mstvisible="3" %)
836 (((
837 (% _msthash="903323" _msttexthash="3253315" _mstvisible="4" %)
838 (% _mstvisible="5" %)**Example 2**(%%): Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
839
840
841 (% _msthash="903323" _msttexthash="3253315" _mstvisible="4" %)
842
843 )))
844
845 (% _mstvisible="1" style="text-align: left;" %)
846 == (% _msthash="614770" _msttexthash="578240" _mstvisible="3" %)4.2 Set External Sensor Mode(%%) ==
847
848 (% _msthash="315357" _msttexthash="975117" _mstvisible="1" style="text-align: left;" %)
849 Feature: Change External Sensor Mode.
850
851 (% _mstvisible="1" style="text-align: left;" %)
852 (% _msthash="315245" _msttexthash="248118" style="color:#4f81bd" %)**AT Command: AT+EXT**
853
854 (% _mstvisible="1" %)
855 [[image:image-20220523150759-3.png||_mstalt="432146" _mstvisible="3"]]
856
857 (% _mstvisible="1" %)
858 (((
859 (% _mstvisible="2" style="text-align: left;" %)
860
861
862 (% _mstvisible="2" style="text-align: left;" %)
863 (% _msthash="506056" _msttexthash="387855" style="color:#4f81bd" %)**Downlink Command: 0xA2**
864 )))
865
866 (% _mstvisible="1" %)
867 (((
868 (% _msthash="506259" _msttexthash="395629" _mstvisible="2" style="text-align: left;" %)
869 Total bytes: 2 ~~ 5 bytes
870 )))
871
872 (% _mstvisible="1" %)
873 (((
874 (% _mstvisible="2" %)
875 (% _msthash="506260" _msttexthash="104767" _mstvisible="4" %)**Example:**
876 )))
877
878 (% _mstvisible="1" %)
879 * (% _mstvisible="3" %)
880 (((
881 (% _msthash="903324" _msttexthash="934973" _mstvisible="4" %)
882 0xA201: Set external sensor type to E1
883 )))
884 * (% _mstvisible="3" %)
885 (((
886 (% _msthash="903325" _msttexthash="354770" _mstvisible="4" %)
887 0xA209: Same as AT+EXT=9
888 )))
889 * (% _mstvisible="3" %)
890 (((
891 (% _msthash="903326" _msttexthash="639067" _mstvisible="4" %)
892 0xA20702003c,Same as AT+SETCNT=60
893
894
895 (% _msthash="903326" _msttexthash="639067" _mstvisible="4" %)
896
897 )))
898
899 (% _mstvisible="1" style="text-align: left;" %)
900 == (% _msthash="1562483" _msttexthash="1445717" _mstvisible="3" %)4.3 Enable/Disable uplink Temperature probe ID(%%) ==
901
902 (% _msthash="315359" _msttexthash="2977572" _mstvisible="1" style="text-align: left;" %)
903 Feature: If PID is enabled, device will send the temperature probe ID on:
904
905 (% _mstvisible="1" %)
906 * First Packet after OTAA Join
907 * Every 24 hours since the first packet.
908
909 (% _msthash="315360" _msttexthash="658814" _mstvisible="1" style="text-align: left;" %)
910 PID is default set to disable (0)
911
912 (% _mstvisible="1" style="text-align: left;" %)
913 (% _msthash="315246" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
914
915 (% _mstvisible="1" %)
916 [[image:image-20220523150928-4.png||_mstalt="431821" _mstvisible="3"]]
917
918
919 (% _mstvisible="1" style="text-align: left;" %)
920 (% _msthash="315247" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
921
922 (% _mstvisible="1" %)
923 * 0xA800  **~-~->** AT+PID=0
924 * 0xA801     **~-~->** AT+PID=1
925
926 (% _mstvisible="1" style="text-align: left;" %)
927 == (% _msthash="266344" _msttexthash="242879" _mstvisible="3" %)4.4 Set Password(%%) ==
928
929 (% _msthash="315363" _msttexthash="1170728" _mstvisible="1" style="text-align: left;" %)
930 Feature: Set device password, max 9 digits
931
932 (% _mstvisible="1" style="text-align: left;" %)
933 (% _msthash="315248" _msttexthash="295009" style="color:#4f81bd" %)**AT Command: AT+PWORD**
934
935 (% _mstvisible="1" %)
936 [[image:image-20220523151052-5.png||_mstalt="428623" _mstvisible="3"]]
937
938 (% _mstvisible="1" %)
939 (((
940 (% _mstvisible="2" style="text-align: left;" %)
941
942
943 (% _mstvisible="2" style="text-align: left;" %)
944 (% _msthash="506057" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
945 )))
946
947 (% _mstvisible="1" %)
948 (((
949 (% _msthash="506262" _msttexthash="974311" _mstvisible="2" style="text-align: left;" %)
950 No downlink command for this feature.
951
952 (% _msthash="506262" _msttexthash="974311" _mstvisible="2" style="text-align: left;" %)
953
954 )))
955
956 (% _mstvisible="1" style="text-align: left;" %)
957 == (% _msthash="306956" _msttexthash="281918" _mstvisible="3" %)4.5 Quit AT Command(%%) ==
958
959 (% _msthash="315365" _msttexthash="4616456" _mstvisible="1" style="text-align: left;" %)
960 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
961
962 (% _mstvisible="1" style="text-align: left;" %)
963 (% _msthash="315249" _msttexthash="289120" style="color:#4f81bd" %)**AT Command: AT+DISAT**
964
965 (% _mstvisible="1" %)
966 [[image:image-20220523151132-6.png||_mstalt="428649" _mstvisible="3"]]
967
968
969 (% _mstvisible="1" style="text-align: left;" %)
970 (% _msthash="315250" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
971
972 (% _msthash="315368" _msttexthash="974311" _mstvisible="1" style="text-align: left;" %)
973 No downlink command for this feature.
974
975
976 (% _mstvisible="1" style="text-align: left;" %)
977 == (% _msthash="362752" _msttexthash="334919" _mstvisible="3" %)4.6 Set to sleep mode(%%) ==
978
979 (% _msthash="315369" _msttexthash="779688" _mstvisible="1" style="text-align: left;" %)
980 Feature: Set device to sleep mode
981
982 * AT+Sleep=0  : Normal working mode, device will sleep and use lower power when there is no LoRa message
983 * AT+Sleep=1 : Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
984
985 (% _mstvisible="1" style="text-align: left;" %)
986 (% _msthash="315251" _msttexthash="289783" style="color:#4f81bd" %)**AT Command: AT+SLEEP**
987
988 (% _mstvisible="1" %)
989 [[image:image-20220523151218-7.png||_mstalt="430703" _mstvisible="3"]]
990
991 (% _mstvisible="1" %)
992 (% _msthash="315252" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
993
994 (% _mstvisible="1" %)
995 * There is no downlink command to set to Sleep mode.
996
997 (% _mstvisible="1" %)
998 == (% _msthash="336557" _msttexthash="309712" _mstvisible="3" %)4.7 Set system time(%%) ==
999
1000 (% _msthash="315372" _msttexthash="2565524" _mstvisible="1" %)
1001 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1002
1003 (% _mstvisible="1" %)
1004 (% _msthash="315253" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1005
1006 (% _mstvisible="1" %)
1007 [[image:image-20220523151253-8.png||_mstalt="430677" _mstvisible="3"]]
1008
1009
1010 (% _mstvisible="1" %)
1011 (% _msthash="315254" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1012
1013 (% _msthash="315375" _msttexthash="2898571" _mstvisible="1" %)
1014 0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1015
1016
1017 (% _mstvisible="1" %)
1018 == (% _msthash="376779" _msttexthash="348712" _mstvisible="3" %)4.8 Set Time Sync Mode(%%) ==
1019
1020 (% _mstvisible="1" %)
1021 (((
1022 (% _msthash="506263" _msttexthash="11748321" _mstvisible="2" %)
1023 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1024 )))
1025
1026 (% _mstvisible="1" %)
1027 (((
1028 (% _msthash="506264" _msttexthash="6530264" _mstvisible="2" %)
1029 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.
1030 )))
1031
1032 (% _mstvisible="1" %)
1033 (((
1034 (% _mstvisible="2" %)
1035 (% _msthash="506058" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1036 )))
1037
1038 (% _mstvisible="1" %)
1039 [[image:image-20220523151336-9.png||_mstalt="431717" _mstvisible="3"]]
1040
1041
1042 (% _mstvisible="1" %)
1043 (% _msthash="315255" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1044
1045 (% _msthash="315377" _msttexthash="479648" _mstvisible="1" %)
1046 0x28 01 ~/~/ Same As AT+SYNCMOD=1
1047
1048 (% _msthash="315378" _msttexthash="479076" _mstvisible="1" %)
1049 0x28 00 ~/~/ Same As AT+SYNCMOD=0
1050
1051
1052 (% _mstvisible="1" %)
1053 == (% _msthash="536432" _msttexthash="502528" _mstvisible="3" %)4.9 Set Time Sync Interval(%%) ==
1054
1055 (% _msthash="315379" _msttexthash="3065777" _mstvisible="1" %)
1056 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1057
1058 (% _mstvisible="1" %)
1059 (% _msthash="315256" _msttexthash="137488" style="color:#4f81bd" %)**AT Command:**
1060
1061 (% _mstvisible="1" %)
1062 [[image:image-20220523151411-10.png||_mstalt="449696" _mstvisible="3"]]
1063
1064
1065 (% _mstvisible="1" %)
1066 (% _msthash="315257" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1067
1068 (% _msthash="315382" _msttexthash="590044" _mstvisible="1" %)
1069 0x29 0A ~/~/ Same as AT+SYNCTDC=0x0A
1070
1071
1072 (% _mstvisible="1" %)
1073 == (% _msthash="927901" _msttexthash="882570" _mstvisible="3" %)4.10 Print data entries base on page.(%%) ==
1074
1075 (% _msthash="315383" _msttexthash="3233334" _mstvisible="1" %)
1076 Feature: Print the sector data from start page to stop page (max is 416 pages).
1077
1078 (% _mstvisible="1" %)
1079 (% _msthash="315258" _msttexthash="264953" style="color:#4f81bd" %)**AT Command: AT+PDTA**
1080
1081 (% _mstvisible="1" %)
1082 [[image:image-20220523151450-11.png||_mstalt="451035" _mstvisible="3"]]
1083
1084
1085 (% _mstvisible="1" %)
1086 (% _msthash="315259" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1087
1088 (% _msthash="315386" _msttexthash="799539" _mstvisible="1" %)
1089 No downlink commands for feature
1090
1091
1092 (% _mstvisible="1" %)
1093 == (% _msthash="788762" _msttexthash="747149" _mstvisible="3" %)4.11 Print last few data entries.(%%) ==
1094
1095 (% _msthash="315387" _msttexthash="1101009" _mstvisible="1" %)
1096 Feature: Print the last few data entries
1097
1098 (% _mstvisible="1" %)
1099 (% _msthash="315260" _msttexthash="288522" style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1100
1101 (% _mstvisible="1" %)
1102 [[image:image-20220523151524-12.png||_mstalt="452101" _mstvisible="3"]]
1103
1104
1105 (% _mstvisible="1" %)
1106 (% _msthash="315261" _msttexthash="298038" style="color:#4f81bd" %)**Downlink Command:**
1107
1108 (% _msthash="315390" _msttexthash="799539" _mstvisible="1" %)
1109 No downlink commands for feature
1110
1111
1112 (% _mstvisible="1" %)
1113 == (% _msthash="437814" _msttexthash="408057" _mstvisible="3" %)4.12 Clear Flash Record(%%) ==
1114
1115 (% _msthash="315391" _msttexthash="1609075" _mstvisible="1" %)
1116 Feature: Clear flash storage for data log feature.
1117
1118 (% _mstvisible="1" %)
1119 (% _msthash="315262" _msttexthash="311415" style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1120
1121 (% _mstvisible="1" %)
1122 [[image:image-20220523151556-13.png||_mstalt="454129" _mstvisible="3"]]
1123
1124
1125 (% _mstvisible="1" %)
1126 (% _msthash="315263" _msttexthash="388193" style="color:#4f81bd" %)**Downlink Command: 0xA3**
1127
1128 (% _mstvisible="1" %)
1129 * Example: 0xA301 ~/~/Same as AT+CLRDTA
1130
1131 (% _mstvisible="1" %)
1132 == (% _msthash="740532" _msttexthash="701363" _mstvisible="3" %)4.13 Auto Send None-ACK messages(%%) ==
1133
1134 (% _msthash="315394" _msttexthash="51837149" _mstvisible="1" %)
1135 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.
1136
1137
1138 (% _mstvisible="1" %)
1139 (% _msthash="315264" _msttexthash="334256" style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1140
1141 (% _msthash="315396" _msttexthash="734682" _mstvisible="1" %)
1142 The default factory setting is 0
1143
1144 (% _mstvisible="1" border="1" style="background-color:#ffffcc; color:green; width:450px" %)
1145 (% _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**
1146 (% _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
1147
1148 (% _mstvisible="1" %)
1149 (% _msthash="315265" _msttexthash="383981" style="color:#4f81bd" %)**Downlink Command: 0x34**
1150
1151 (% _mstvisible="1" %)
1152 * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1153
1154 (% _mstvisible="1" %)
1155 = (% _msthash="568737" _msttexthash="502827" _mstvisible="3" %)5. Battery & How to replace(%%) =
1156
1157 (% _mstvisible="1" %)
1158 == (% _msthash="265486" _msttexthash="242073" _mstvisible="3" %)5.1 Battery Type(%%) ==
1159
1160 (% _msthash="315398" _msttexthash="33754799" _mstvisible="1" %)
1161 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.
1162
1163 (% _mstvisible="1" %)
1164 (((
1165 (% _mstvisible="2" %)
1166 The discharge curve is not linear so can’t simply use percentage to show the battery level. Below is the battery performance.
1167 [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1168 )))
1169
1170 (% _mstvisible="1" %)
1171 (((
1172 (% _mstvisible="2" %)
1173 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1174
1175 )))
1176
1177 (% _mstvisible="1" %)
1178 == (% _msthash="353795" _msttexthash="326703" _mstvisible="3" %)5.2 Replace Battery(%%) ==
1179
1180 (% _msthash="315399" _msttexthash="11289278" _mstvisible="1" %)
1181 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.
1182
1183 (% _mstvisible="1" %)
1184 [[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"]]
1185
1186
1187 (% _mstvisible="1" %)
1188 == (% _msthash="494650" _msttexthash="462241" _mstvisible="3" %)5.3 Battery Life Analyze(%%) ==
1189
1190 (% _mstvisible="1" %)
1191 (((
1192 (% _msthash="506266" _msttexthash="35479028" _mstvisible="2" %)
1193 (((
1194 (% _msthash="736723" _msttexthash="35479028" %)
1195 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:
1196 [[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]]
1197 )))
1198
1199 (((
1200
1201 )))
1202
1203 (((
1204 (% _msthash="736724" _msttexthash="12045098" %)
1205 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]]
1206 )))
1207
1208
1209 (% _msthash="506266" _msttexthash="35479028" _mstvisible="2" %)
1210 = (% _msthash="183170" _msttexthash="37921" _mstvisible="3" %)6. FAQ(%%) =
1211
1212 (% _msthash="506266" _msttexthash="35479028" _mstvisible="2" %)
1213 == (% _msthash="491075" _msttexthash="437463" %)6.1 How to use AT Command?(%%) ==
1214
1215 (((
1216 (% _msthash="736725" _msttexthash="9345674" %)
1217 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.
1218 )))
1219
1220 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1221
1222
1223 (% _msthash="506061" _msttexthash="170755" %)**Connection:**
1224
1225 (% _msthash="506062" _msttexthash="1187732" %)
1226 **✓ (% style="background-color:yellow" %)USB to TTL GND <~-~->GND(%%)**
1227
1228 (% _msthash="506063" _msttexthash="1158313" %)**✓  **(% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1229
1230 (% _msthash="506064" _msttexthash="1175629" %)**✓  **(% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1231
1232 (% _msthash="506065" _msttexthash="1164696" %)**✓  **(% style="background-color:yellow" %)**USB to TTL 3.3V <~-~-> D-**
1233
1234
1235 (((
1236 (% _msthash="736726" _msttexthash="67213055" %)
1237 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.
1238 )))
1239
1240 (((
1241 (% _msthash="736727" _msttexthash="1907009" %)
1242 Input password and ATZ to activate LHT65N,As shown below:
1243 )))
1244
1245 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1246
1247
1248 (% _msthash="506066" _msttexthash="544869" %)
1249 AT Command List is as below:
1250
1251 (% _msthash="506067" _msttexthash="361920" %)
1252 AT+<CMD>? :  Help on <CMD>
1253
1254 (% _msthash="506068" _msttexthash="243061" %)
1255 AT+<CMD> :  Run <CMD>
1256
1257 (% _msthash="506069" _msttexthash="704197" %)
1258 AT+<CMD>=<value> :  Set the value
1259
1260 (% _msthash="506070" _msttexthash="455676" %)
1261 AT+<CMD>=? :  Get the value
1262
1263 (% _msthash="506071" _msttexthash="670553" %)
1264 AT+DEBUG:  Set more info output
1265
1266 (% _msthash="506072" _msttexthash="485888" %)
1267 ATZ:  Trig a reset of the MCU
1268
1269 (% _msthash="506073" _msttexthash="2068872" %)
1270 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1271
1272 (% _msthash="506074" _msttexthash="689169" %)
1273 AT+DEUI:  Get or Set the Device EUI
1274
1275 (% _msthash="506075" _msttexthash="960414" %)
1276 AT+DADDR:  Get or Set the Device Address
1277
1278 (% _msthash="506076" _msttexthash="1079897" %)
1279 AT+APPKEY:  Get or Set the Application Key
1280
1281 (% _msthash="506077" _msttexthash="1326143" %)
1282 AT+NWKSKEY:  Get or Set the Network Session Key
1283
1284 (% _msthash="506078" _msttexthash="1573000" %)
1285 AT+APPSKEY:  Get or Set the Application Session Key
1286
1287 (% _msthash="506079" _msttexthash="1041729" %)
1288 AT+APPEUI:  Get or Set the Application EUI
1289
1290 (% _msthash="506080" _msttexthash="2104206" %)
1291 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1292
1293 (% _msthash="506081" _msttexthash="3369288" %)
1294 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1295
1296 (% _msthash="506082" _msttexthash="1894529" %)
1297 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1298
1299 (% _msthash="506083" _msttexthash="3864172" %)
1300 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1301
1302 (% _msthash="506084" _msttexthash="1712204" %)
1303 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1304
1305 (% _msthash="506085" _msttexthash="1281202" %)
1306 AT+RX2FQ:  Get or Set the Rx2 window frequency
1307
1308 (% _msthash="506086" _msttexthash="2796781" %)
1309 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1310
1311 (% _msthash="506087" _msttexthash="3285165" %)
1312 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1313
1314 (% _msthash="506088" _msttexthash="3286179" %)
1315 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1316
1317 (% _msthash="506089" _msttexthash="4703803" %)
1318 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1319
1320 (% _msthash="506090" _msttexthash="4704999" %)
1321 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1322
1323 (% _msthash="506091" _msttexthash="1528683" %)
1324 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1325
1326 (% _msthash="506092" _msttexthash="757185" %)
1327 AT+NWKID:  Get or Set the Network ID
1328
1329 (% _msthash="506093" _msttexthash="1156597" %)
1330 AT+FCU:  Get or Set the Frame Counter Uplink
1331
1332 (% _msthash="506094" _msttexthash="1273987" %)
1333 AT+FCD:  Get or Set the Frame Counter Downlink
1334
1335 (% _msthash="506095" _msttexthash="859222" %)
1336 AT+CLASS:  Get or Set the Device Class
1337
1338 (% _msthash="506096" _msttexthash="384852" %)
1339 AT+JOIN:  Join network
1340
1341 (% _msthash="506097" _msttexthash="548626" %)
1342 AT+NJS:  Get the join status
1343
1344 (% _msthash="506098" _msttexthash="2546206" %)
1345 AT+SENDB:  Send hexadecimal data along with the application port
1346
1347 (% _msthash="506099" _msttexthash="1932307" %)
1348 AT+SEND:  Send text data along with the application port
1349
1350 (% _msthash="506100" _msttexthash="3560557" %)
1351 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1352
1353 (% _msthash="506101" _msttexthash="1429701" %)
1354 AT+RECV:  Print last received data in raw format
1355
1356 (% _msthash="506102" _msttexthash="1735981" %)
1357 AT+VER:  Get current image version and Frequency Band
1358
1359 (% _msthash="506103" _msttexthash="1189474" %)
1360 AT+CFM:  Get or Set the confirmation mode (0-1)
1361
1362 (% _msthash="506104" _msttexthash="1718210" %)
1363 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1364
1365 (% _msthash="506105" _msttexthash="1339403" %)
1366 AT+SNR:  Get the SNR of the last received packet
1367
1368 (% _msthash="506106" _msttexthash="1452009" %)
1369 AT+RSSI:  Get the RSSI of the last received packet
1370
1371 (% _msthash="506107" _msttexthash="2768142" %)
1372 AT+TDC:  Get or set the application data transmission interval in ms
1373
1374 (% _msthash="506108" _msttexthash="1083914" %)
1375 AT+PORT:  Get or set the application port
1376
1377 (% _msthash="506109" _msttexthash="622440" %)
1378 AT+DISAT:  Disable AT commands
1379
1380 (% _msthash="506110" _msttexthash="868361" %)
1381 AT+PWORD:  Set password, max 9 digits
1382
1383 (% _msthash="506111" _msttexthash="2210299" %)
1384 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1385
1386 (% _msthash="506112" _msttexthash="2113462" %)
1387 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1388
1389 (% _msthash="506113" _msttexthash="2087423" %)
1390 AT+PDTA:  Print the sector data from start page to stop page
1391
1392 (% _msthash="506114" _msttexthash="1063127" %)
1393 AT+PLDTA:  Print the last few sets of data
1394
1395 (% _msthash="506115" _msttexthash="1999426" %)
1396 AT+CLRDTA:  Clear the storage, record position back to 1st
1397
1398 (% _msthash="506116" _msttexthash="442130" %)
1399 AT+SLEEP:  Set sleep mode
1400
1401 (% _msthash="506117" _msttexthash="1080222" %)
1402 AT+EXT:  Get or Set external sensor model
1403
1404 (% _msthash="506118" _msttexthash="1309490" %)
1405 AT+BAT:  Get the current battery voltage in mV
1406
1407 (% _msthash="506119" _msttexthash="813891" %)
1408 AT+CFG:  Print all configurations
1409
1410 (% _msthash="506120" _msttexthash="551707" %)
1411 AT+WMOD:  Get or Set Work Mode
1412
1413 (% _msthash="506121" _msttexthash="2631499" %)
1414 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1415
1416 (% _msthash="506122" _msttexthash="3907150" %)
1417 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1418
1419 (% _msthash="506123" _msttexthash="854620" %)
1420 AT+SETCNT:  Set the count at present
1421
1422 (% _msthash="506124" _msttexthash="2554877" %)
1423 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1424
1425 (% _msthash="506125" _msttexthash="771849" %)
1426 AT+RPL:  Get or set response level
1427
1428 (% _msthash="506126" _msttexthash="1484314" %)
1429 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1430
1431 (% _msthash="506127" _msttexthash="741728" %)
1432 AT+LEAPSEC:  Get or Set Leap Second
1433
1434 (% _msthash="506128" _msttexthash="1694017" %)
1435 AT+SYNCMOD:  Get or Set time synchronization method
1436
1437 (% _msthash="506129" _msttexthash="2235948" %)
1438 AT+SYNCTDC:  Get or set time synchronization interval in day
1439
1440 (% _msthash="506130" _msttexthash="425542" %)
1441 AT+PID:  Get or set the PID
1442
1443
1444 == (% _msthash="1616654" _msttexthash="1555359" %)6.2 Where to use AT commands and Downlink commands(%%) ==
1445
1446 (% _msthash="506131" _msttexthash="14585714" %)
1447 AT commands：
1448
1449 [[image:image-20220620153708-1.png||height="603" width="723"]]
1450
1451 (% _msthash="506132" _msttexthash="337922" %)
1452 Downlink commands:
1453
1454
1455 (% _msthash="506133" _msttexthash="33046" %)
1456 **TTN:**
1457
1458 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1459
1460
1461 (% _msthash="506134" _msttexthash="11113791" %)
1462 **Helium：**
1463
1464 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1465
1466
1467 (% _msthash="506135" _msttexthash="4159844" %)
1468 **Chirpstack:The downlink window will not be displayed until the network is accessed**
1469
1470 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1471
1472 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1473
1474
1475 (% _msthash="506136" _msttexthash="39286" %)
1476 **Aws:**
1477
1478 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1479
1480
1481 == (% _msthash="1220570" _msttexthash="33199257" %)6.3 How to change the uplink interval？(%%) ==
1482
1483 [[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"]]
1484
1485
1486 (% _msthash="536757" _msttexthash="1874951" %)
1487 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1488
1489 [[image:image-20220615153355-1.png]]
1490
1491 [[image:image-20220620154900-5.jpeg||height="427" width="570"]]
1492
1493 (% style="background-color:yellow" %)**1 < - -> GND  < - ->  Black**
1494
1495 (% style="background-color:yellow" %)**5 < - ->  RXD  < - ->  White**
1496
1497 (% style="background-color:yellow" %)**9 < - ->  TXD  < - ->  Green**
1498
1499
1500 To switch from download mode to command mode, press reset key
1501
1502
1503 (((
1504 (% _msthash="736728" _msttexthash="67213055" %)
1505 (((
1506 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:red" %)**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.
1507 )))
1508 )))
1509
1510 (((
1511 (% _msthash="736729" _msttexthash="1907009" %)
1512 Input password and ATZ to activate LHT65N,As shown below:
1513
1514 [[image:image-20220615154519-3.png||height="672" width="807"]]
1515
1516
1517 )))
1518
1519 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1520
1521
1522 [[image:image-20220615153355-1.png]]
1523
1524 (% style="background-color:yellow" %)**1 < - -> GND  < - ->  Black**
1525
1526 (% style="background-color:yellow" %)**4  < - ->  3.3V  < - ->  Blue**
1527
1528 (% style="background-color:yellow" %)**5 < - ->  RXD  < - ->  White**
1529
1530 (% style="background-color:yellow" %)**9 < - ->  TXD  < - ->  Green**
1531
1532 [[image:image-20220620160241-6.jpeg||height="428" width="571"]]
1533
1534 Press reset after connecting the 4boot cable to enter the download mode.
1535
1536 [[image:image-20220620160516-7.png||height="435" width="435"]]
1537
1538
1539 (% _mstmutation="1" %)**Step1**(%%): Install TremoProgrammer  first.
1540
1541 [[image:image-20220615170542-5.png]]
1542
1543
1544 (% _msthash="506146" _msttexthash="52173160" %)
1545 (% _istranslated="1" %)**Step2**(%%)：Download the LHT65N image files.
1546
1547
1548 (% _msthash="506147" _msttexthash="188083584" %)
1549 (% _istranslated="1" %)**Step3：**(%%)Select the serial port and baud rate of the device and the firmware to be upgraded.
1550
1551 [[image:image-20220615171334-6.png]]
1552
1553
1554 (% _istranslated="1" _mstmutation="1" %)**Step4：**(%%)Click Start
1555
1556 [[image:image-20220620160723-8.png]]
1557 )))
1558
1559 (% _mstvisible="1" %)
1560 = (% _msthash="183170" _msttexthash="13740740" _mstvisible="3" %)7. (%%)Order Info =
1561
1562 (% _mstvisible="1" %)
1563 (((
1564 (% _msthash="506267" _msttexthash="432432" _mstvisible="2" %)
1565 Part Number: (% _mstvisible="4" style="color:#4f81bd" %)** LHT65N-XX-YY**
1566 )))
1567
1568 (% _mstvisible="1" %)
1569 (((
1570 (% _msthash="506268" _msttexthash="686946" _mstvisible="2" %)
1571 (% _mstvisible="4" style="color:#4f81bd" %)**XX **(%%): The default frequency band
1572 )))
1573
1574 (% _mstvisible="1" %)
1575 * (% _mstvisible="3" %)
1576 (((
1577 (% _msthash="903327" _msttexthash="393341" _mstvisible="4" %)
1578 (% _mstvisible="6" style="color:#4f81bd" %)** **(% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1579 )))
1580 * (% _mstvisible="3" %)
1581 (((
1582 (% _msthash="903328" _msttexthash="394576" _mstvisible="4" %)
1583 (% _mstvisible="6" style="color:#4f81bd" %)** **(% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1584 )))
1585 * (% _mstvisible="3" %)
1586 (((
1587 (% _msthash="903329" _msttexthash="393913" _mstvisible="4" %)
1588 (% _mstvisible="6" style="color:#4f81bd" %)** **(% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1589 )))
1590 * (% _mstvisible="3" %)
1591 (((
1592 (% _msthash="903330" _msttexthash="399087" _mstvisible="4" %)
1593 (% _mstvisible="6" style="color:#4f81bd" %)** **(% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1594 )))
1595 * (% _mstvisible="3" %)
1596 (((
1597 (% _msthash="903331" _msttexthash="395109" _mstvisible="4" %)
1598 (% _mstvisible="6" style="color:#4f81bd" %)** **(% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1599 )))
1600 * (% _mstvisible="3" %)
1601 (((
1602 (% _msthash="903332" _msttexthash="400842" _mstvisible="4" %)
1603 (% _mstvisible="6" style="color:#4f81bd" %)** **(% style="color:red" %)**US915**(%%): LoRaWAN US915 band
1604 )))
1605 * (% _mstvisible="3" %)
1606 (((
1607 (% _msthash="903333" _msttexthash="396487" _mstvisible="4" %)
1608 (% _mstvisible="6" style="color:#4f81bd" %)** **(% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1609 )))
1610 * (% _mstvisible="3" %)
1611 (((
1612 (% _msthash="903334" _msttexthash="390923" _mstvisible="4" %)
1613 (% _mstvisible="6" style="color:#4f81bd" %)** **(% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1614 )))
1615
1616 (% _mstvisible="1" %)
1617 (((
1618 (% _msthash="506269" _msttexthash="443495" _mstvisible="2" %)
1619 (% _mstvisible="4" style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1620 )))
1621
1622 (% _mstvisible="1" %)
1623 * (% _mstvisible="3" %)
1624 (((
1625 (% _msthash="903335" _msttexthash="720135" _mstvisible="4" %)
1626 (% style="color:red" %)**E3**(%%): External Temperature Probe
1627
1628
1629 )))
1630
1631 (% _mstvisible="1" %)
1632 = (% _msthash="233363" _msttexthash="13823550" _mstvisible="3" %)8. (%%)Packing Info =
1633
1634 (% _mstvisible="1" %)
1635 (((
1636 (% _msthash="506270" _msttexthash="295386" _mstvisible="2" %)
1637
1638
1639 (% _msthash="506270" _msttexthash="295386" _mstvisible="2" %)
1640 (% _mstvisible="3" %)**Package Includes**(%%):
1641 )))
1642
1643 (% _mstvisible="1" %)
1644 * (% _mstvisible="3" %)
1645 (((
1646 (% _msthash="903336" _msttexthash="1033149" _mstvisible="4" %)
1647 LHT65N Temperature & Humidity Sensor x 1
1648 )))
1649 * (% _mstvisible="3" %)
1650 (((
1651 (% _msthash="903338" _msttexthash="544167" _mstvisible="4" %)
1652 Optional external sensor
1653 )))
1654
1655 (% _mstvisible="1" %)
1656 (((
1657 (% _msthash="506271" _msttexthash="403858" _mstvisible="2" %)
1658 (% _mstvisible="3" %)**Dimension and weight**(%%):
1659 )))
1660
1661 (% _mstvisible="1" %)
1662 * (% _mstvisible="3" %)
1663 (((
1664 (% _msthash="903339" _msttexthash="391807" _mstvisible="4" %)
1665 Device Size:  10 x 10 x 3.5 cm
1666 )))
1667 * (% _mstvisible="3" %)
1668 (((
1669 (% _msthash="903340" _msttexthash="285298" _mstvisible="4" %)
1670 Device Weight: 120.5g
1671 )))
1672
1673 (% _mstvisible="3" %)
1674 (((
1675
1676 )))
1677
1678 = (% _msthash="184782" _msttexthash="16007771" %)9. Reference material(%%) =
1679
1680 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/home/Products_Public_Document/LoRaWAN%20End%20Node/LHT65N%20Temperature%20%26%20Humidity%20Sensor||_msthash="504975" _msttexthash="51420512"]]
1681
1682 = (% _msthash="216320" _msttexthash="10002096" %)10. (%%)FCC Warning =
1683
1684 (% _mstvisible="1" %)
1685 (((
1686 (% _msthash="506272" _msttexthash="6034353" _mstvisible="2" %)
1687 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1688 )))
1689
1690 (% _mstvisible="1" %)
1691 (((
1692 (% _msthash="506273" _msttexthash="44097638" _mstvisible="2" %)
1693 (1) This device may not cause harmful interference；
1694 )))
1695
1696 (% _mstvisible="1" %)
1697 (((
1698 (% _msthash="506274" _msttexthash="7559773" _mstvisible="2" %)
1699 (2) this device must accept any interference received, including interference that may cause undesired operation.
1700 )))
1701 )))
1702 )))