Changes for page LHT52 - LoRaWAN Temperature & Humidity Sensor User Manual
Last modified by Mengting Qiu on 2024/04/30 14:27
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... ... @@ -1,5 +1,5 @@ 1 1 (% style="text-align:center" %) 2 -[[image:image-20220523115324-1.jpeg||height=" 500" width="500"]]2 +[[image:image-20220523115324-1.jpeg||height="317" width="317"]] 3 3 4 4 5 5 **LHT65N LoRaWAN Temperature & Humidity Sensor Manual** ... ... @@ -6,6 +6,7 @@ 6 6 7 7 8 8 9 + 9 9 **Table of Contents:** 10 10 11 11 {{toc/}} ... ... @@ -12,8 +12,9 @@ 12 12 13 13 14 14 15 -= 1.Introduction = 16 16 17 += 1. Introduction = 18 + 17 17 == 1.1 What is LHT65N Temperature & Humidity Sensor == 18 18 19 19 ((( ... ... @@ -132,11 +132,7 @@ 132 132 133 133 [[image:image-20220515123819-1.png||height="379" width="317"]] 134 134 135 -(% border="1" style="background-color:#ffffcc; color:green; width:739px" %) 136 -|**Behavior on ACT**|**Function**|(% style="width:424px" %)**Action** 137 -|**Pressing ACT between 1s < time < 3s**|Test uplink status|(% style="width:424px" %)If LHT65N is already Joined to the LoRaWAN network, LHT65N will send an uplink packet, if LHT65N has an external sensor connected, blue led will blink once. If LHT65N has no external sensor, red led will blink once. 138 -|**Pressing ACT for more than 3s**|Active Device|(% style="width:424px" %)green led will fast blink 5 times, LHT65N will enter working mode and start to JOIN LoRaWAN network. green led will solid turn on for 5 seconds after join in network. 139 -|**Fast press ACT 5 times**|Deactivate Device|(% style="width:424px" %)red led will solid on for 5 seconds. This means LHT65N is in Deep Sleep Mode. 137 +[[image:image-20220525110604-2.png]] 140 140 141 141 == 2.3 Example to join LoRaWAN network == 142 142 ... ... @@ -190,45 +190,39 @@ 190 190 191 191 After each uplink, the (% style="color:blue" %)**BLUE LED**(%%) will blink once. 192 192 193 - 194 -(% border="1" style="background-color:#ffffcc; color:green; width:428px" %) 195 -|(% style="width:106px" %)((( 191 +(% border="1" style="background-color:#ffffcc; color:green; width:426px" %) 192 +|(% style="width:97px" %)((( 196 196 **Size(bytes)** 197 -)))|(% style="width: 46px" %)(((194 +)))|(% style="width:39px" %)((( 198 198 **2** 199 -)))|(% style="width:10 4px" %)(((196 +)))|(% style="width:100px" %)((( 200 200 **2** 201 -)))|(% style="width: 80px" %)(((198 +)))|(% style="width:77px" %)((( 202 202 **2** 203 -)))|(% style="width: 51px" %)(((200 +)))|(% style="width:47px" %)((( 204 204 **1** 205 -)))|(% style="width: 35px" %)(((202 +)))|(% style="width:51px" %)((( 206 206 **4** 207 207 ))) 208 -|(% style="width: 106px" %)(((205 +|(% style="width:97px" %)((( 209 209 **Value** 210 -)))|(% style="width: 46px" %)(((211 -[[BAT>> path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.2BAT-BatteryInfo]]212 -)))|(% style="width:10 4px" %)(((207 +)))|(% style="width:39px" %)((( 208 +[[BAT>>||anchor="H2.4.2BAT-BatteryInfo"]] 209 +)))|(% style="width:100px" %)((( 213 213 ((( 214 -[[Built-In >>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.3Built-inTemperature]]211 +[[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]] 215 215 ))) 216 - 213 +)))|(% style="width:77px" %)((( 217 217 ((( 218 -[[ Temperature>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.3Built-inTemperature]]215 +[[Built-in>>||anchor="H2.4.4Built-inHumidity"]] 219 219 ))) 220 -)))|(% style="width:80px" %)((( 221 221 ((( 222 -[[ Built-in>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]]218 +[[Humidity>>||anchor="H2.4.4Built-inHumidity"]] 223 223 ))) 224 - 225 -((( 226 -[[Humidity>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]] 227 -))) 220 +)))|(% style="width:47px" %)((( 221 +[[Ext>>||anchor="H2.4.5Ext23"]] # 228 228 )))|(% style="width:51px" %)((( 229 -[[Ext>>path:#Extension_Sensor]] # 230 -)))|(% style="width:35px" %)((( 231 -[[Ext value>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.6Extvalue]] 223 +[[Ext value>>||anchor="H2.4.6Extvalue"]] 232 232 ))) 233 233 234 234 * The First 6 bytes: has fix meanings for every LHT65N. ... ... @@ -249,40 +249,8 @@ 249 249 250 250 These two bytes of BAT include the battery state and the actually voltage 251 251 252 -(% border="1" style="background-color:#ffffcc; color:green; width:502px" %) 253 -|(% style="width:75px" %)((( 254 -Bit(bit) 255 -)))|(% style="width:259px" %)((( 256 -[15:14] 257 -)))|(% style="width:164px" %)((( 258 -[13:0] 259 -))) 260 -|(% style="width:75px" %)((( 261 -Value 262 -)))|(% style="width:259px" %)((( 263 -((( 264 -BAT Status 265 -))) 244 +[[image:image-20220523152839-18.png]] 266 266 267 -((( 268 -00(b): Ultra Low ( BAT <= 2.50v) 269 -))) 270 - 271 -((( 272 -01(b): Low (2.50v <=BAT <= 2.55v) 273 -))) 274 - 275 -((( 276 -10(b): OK (2.55v <= BAT <=2.65v) 277 -))) 278 - 279 -((( 280 -11(b): Good (BAT >= 2.65v) 281 -))) 282 -)))|(% style="width:164px" %)((( 283 -Actually BAT voltage 284 -))) 285 - 286 286 [[image:image-20220522235639-1.png||height="139" width="727"]] 287 287 288 288 Check the battery voltage for LHT65N. ... ... @@ -310,10 +310,7 @@ 310 310 311 311 Bytes for External Sensor: 312 312 313 -(% border="1" style="background-color:#ffffcc; color:green; width:473px" %) 314 -|(% style="width:139px" %)**EXT # Value**|(% style="width:331px" %)**External Sensor Type** 315 -|(% style="width:139px" %)0x01|(% style="width:331px" %)Sensor E3, Temperature Sensor 316 -|(% style="width:139px" %)0x09|(% style="width:331px" %)Sensor E3, Temperature Sensor, Datalog Mod 273 +[[image:image-20220523152822-17.png]] 317 317 318 318 === 2.4.6 Ext value === 319 319 ... ... @@ -342,21 +342,47 @@ 342 342 343 343 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: 344 344 345 -(% border="1" style="background-color:#ffffcc; color:green; width:541px" %) 346 -|(% style="width:96px" %)**Size(bytes)**|(% style="width:71px" %)**2**|(% style="width:69px" %)**2**|(% style="width:88px" %)**2**|(% style="width:69px" %)**1**|(% style="width:85px" %)**4** 347 -|(% style="width:96px" %)**Value**|(% style="width:71px" %)[[External temperature>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H4.2SetExternalSensorMode]]|(% style="width:69px" %)((( 348 -[[Built-In>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.3Built-inTemperature]] 302 +(% border="1" style="background-color:#ffffcc; color:green; width:510px" %) 303 +|(% style="width:96px" %)((( 304 +**Size(bytes)** 305 +)))|(% style="width:71px" %)((( 306 +**2** 307 +)))|(% style="width:99px" %)((( 308 +**2** 309 +)))|(% style="width:132px" %)((( 310 +**2** 311 +)))|(% style="width:54px" %)((( 312 +**1** 313 +)))|(% style="width:64px" %)((( 314 +**4** 315 +))) 316 +|(% style="width:96px" %)((( 317 +**Value** 318 +)))|(% style="width:71px" %)((( 319 +[[External temperature>>||anchor="H4.2SetExternalSensorMode"]] 320 +)))|(% style="width:99px" %)((( 321 +((( 322 +[[Built-In>>||anchor="H2.4.3Built-inTemperature"]] 323 +))) 349 349 350 -[[Temperature>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.3Built-inTemperature]] 351 -)))|(% style="width:88px" %)((( 325 +((( 326 +[[Temperature>>||anchor="H2.4.3Built-inTemperature"]] 327 +))) 328 +)))|(% style="width:132px" %)((( 329 +((( 352 352 BAT Status & 331 +))) 353 353 354 -[[Built-in>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]] 355 - 356 -[[Humidity>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]] 357 -)))|(% style="width:69px" %)Status & Ext|(% style="width:85px" %)((( 358 -[[Unix Time Stamp>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H4.1SetTransmitIntervalTime]] 333 +((( 334 +[[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]] 359 359 ))) 336 +)))|(% style="width:54px" %)((( 337 +Status & Ext 338 +)))|(% style="width:64px" %)((( 339 +((( 340 +[[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]] 341 +))) 342 +))) 360 360 361 361 * **Battery status & (% class="wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink" %)Built-in Humidity(%%)** 362 362 ... ... @@ -373,7 +373,7 @@ 373 373 374 374 11(b): Good (BAT >= 2.65v) 375 375 )))|(% style="width:134px" %)((( 376 -[[Built-in Humidity>> path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]]359 +[[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]] 377 377 378 378 379 379 ))) ... ... @@ -380,11 +380,7 @@ 380 380 381 381 * **Status & Ext Byte** 382 382 383 -(% border="1" style="background-color:#ffffcc; color:green; width:587px" %) 384 -|(% style="width:109px" %)**Bits**|(% style="width:105px" %)**7**|(% style="width:105px" %)**6**|(% style="width:82px" %)**5**|(% style="width:84px" %)**4**|(% style="width:97px" %)**[3:0]** 385 -|(% style="width:109px" %)**Status & Ext**|(% style="width:105px" %)Not Defined|(% style="width:105px" %)Poll Message Flag|(% style="width:82px" %)Sync time OK|(% style="width:84px" %)Unix Time Request|(% style="width:97px" %)((( 386 -Ext:0b(1001) 387 -))) 366 +[[image:image-20220523152434-16.png]] 388 388 389 389 * Poll Message Flag: 1: This message is a poll message reply, 0: means this is a normal uplink. 390 390 * 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. ... ... @@ -421,10 +421,17 @@ 421 421 422 422 == 2.6 Datalog Feature == 423 423 424 - Thisfeature isalwaysenabled. When userwants toretrievethe sensorvalue, hecansendapollcommand from theIoT platformto askLHT65Ntosendthevalue inthe requiredtimeslot.403 +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. 425 425 426 -=== 2.6.1 UnixTimeStamp===405 +=== 2.6.1 Ways to get datalog via LoRaWAN === 427 427 407 +There are two methods: 408 + 409 +1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specify time range. 410 +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. 411 + 412 +=== 2.6.2 Unix TimeStamp === 413 + 428 428 LHT65N uses Unix TimeStamp format based on 429 429 430 430 [[image:image-20220523001219-11.png||height="97" width="627"]] ... ... @@ -442,7 +442,7 @@ 442 442 443 443 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25 444 444 445 -=== 2.6. 2Set Device Time ===431 +=== 2.6.3 Set Device Time === 446 446 447 447 ((( 448 448 There are two ways to set device’s time: ... ... @@ -476,21 +476,18 @@ 476 476 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server. 477 477 ))) 478 478 479 -=== 2.6. 3Poll sensor value ===465 +=== 2.6.4 Poll sensor value === 480 480 481 481 User can poll sensor value based on timestamps from the server. Below is the downlink command. 482 482 469 +[[image:image-20220523152302-15.png]] 483 483 484 -(% border="1" style="background-color:#ffffcc; color:green; width:427px" %) 485 -|(% style="width:61px" %)1byte|(% style="width:126px" %)4bytes|(% style="width:120px" %)4bytes|(% style="width:115px" %)1byte 486 -|(% style="width:61px" %)31|(% style="width:126px" %)Timestamp start|(% style="width:120px" %)Timestamp end|(% style="width:115px" %)Uplink Interval 487 - 488 488 ((( 489 489 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. 490 490 ))) 491 491 492 492 ((( 493 -For example, downlink command **31 5FC5F350 5FC6 0160 05** 476 +For example, downlink command (% style="display:none" %) (%%)**31 5FC5F350 5FC6 0160 05** 494 494 ))) 495 495 496 496 ((( ... ... @@ -502,7 +502,7 @@ 502 502 ))) 503 503 504 504 505 -=== 2.6. 4Datalog Uplink payload ===488 +=== 2.6.5 Datalog Uplink payload === 506 506 507 507 The Datalog poll reply uplink will use below payload format. 508 508 ... ... @@ -510,100 +510,138 @@ 510 510 **Retrieval data payload** 511 511 ))) 512 512 513 -(% border="1" style="background-color:#ffffcc; color:green; width:5 45px" %)496 +(% border="1" style="background-color:#ffffcc; color:green; width:510px" %) 514 514 |(% style="width:93px" %)((( 498 +((( 515 515 **Size(bytes)** 500 +))) 516 516 )))|(% style="width:71px" %)((( 502 +((( 517 517 **2** 504 +))) 518 518 )))|(% style="width:102px" %)((( 506 +((( 519 519 **2** 508 +))) 520 520 )))|(% style="width:86px" %)((( 510 +((( 521 521 **2** 522 -)))|(% style="width:90px" %)((( 512 +))) 513 +)))|(% style="width:86px" %)((( 514 +((( 523 523 **1** 524 -)))|(% style="width:85px" %)((( 516 +))) 517 +)))|(% style="width:48px" %)((( 518 +((( 525 525 **4** 526 526 ))) 521 +))) 527 527 |(% style="width:93px" %)((( 523 +((( 528 528 **Value** 525 +))) 529 529 )))|(% style="width:71px" %)((( 530 -[[External sensor data>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.6Extvalue]] 527 +((( 528 +[[External sensor data>>||anchor="H2.4.6Extvalue"]] 529 +))) 531 531 )))|(% style="width:102px" %)((( 532 532 ((( 533 -[[Built In>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.3Built-inTemperature]] 532 +((( 533 +[[Built In>>||anchor="H2.4.3Built-inTemperature"]] 534 534 ))) 535 +))) 535 535 536 536 ((( 537 -[[Temperature>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.3Built-inTemperature]] 538 +((( 539 +[[Temperature>>||anchor="H2.4.3Built-inTemperature"]] 538 538 ))) 541 +))) 539 539 )))|(% style="width:86px" %)((( 540 540 ((( 541 -[[Built-in>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]] 544 +((( 545 +[[Built-in>>||anchor="H2.4.4Built-inHumidity"]] 542 542 ))) 547 +))) 543 543 544 544 ((( 545 -[[Humidity>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]] 550 +((( 551 +[[Humidity>>||anchor="H2.4.4Built-inHumidity"]] 546 546 ))) 547 -)))|(% style="width:90px" %)((( 548 -[[Poll message flag & Ext>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.6.4DatalogUplinkpayload]] 549 -)))|(% style="width:85px" %)((( 553 +))) 554 +)))|(% style="width:86px" %)((( 550 550 ((( 551 -[[ UnixTimeStamp>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.6.1UnixTimeStamp]]556 +[[Poll message flag & Ext>>||anchor="H2.6.4DatalogUplinkpayload"]] 552 552 ))) 558 +)))|(% style="width:48px" %)((( 559 +((( 560 +((( 561 +[[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]] 562 +))) 563 +))) 553 553 554 554 ((( 566 +((( 555 555 556 556 ))) 557 557 ))) 570 +))) 558 558 559 559 **Poll message flag & Ext** 560 560 561 -(% border="1" style="background-color:#ffffcc; color:green; width:540px" %) 562 -|(% style="width:81px" %)**Bits**|(% style="width:100px" %)**7**|(% style="width:105px" %)**6**|(% style="width:84px" %)**5**|(% style="width:85px" %)**4**|(% style="width:79px" %)**[3:0]** 563 -|(% style="width:81px" %)**Status & Ext**|(% style="width:100px" %)Not Defined|(% style="width:105px" %)Poll Message Flag|(% style="width:84px" %)Sync time OK|(% style="width:85px" %)Unix Time Request|(% style="width:79px" %)((( 564 -((( 565 -Ext: 566 -))) 574 +[[image:image-20220523152208-14.png]] 567 567 568 568 ((( 569 -0b(1001) 570 -))) 571 -))) 572 - 573 573 ((( 574 574 Poll Message Flag: 1: This message is a poll message reply. 575 575 ))) 580 +))) 576 576 577 577 * ((( 583 +((( 578 578 Poll Message Flag is set to 1. 579 579 ))) 586 +))) 580 580 * ((( 588 +((( 581 581 Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands. 582 582 ))) 591 +))) 583 583 584 584 ((( 594 +((( 585 585 For example, in US915 band, the max payload for different DR is: 586 586 ))) 597 +))) 587 587 588 588 ((( 600 +((( 589 589 a) DR0: max is 11 bytes so one entry of data 590 590 ))) 603 +))) 591 591 592 592 ((( 606 +((( 593 593 b) DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes) 594 594 ))) 609 +))) 595 595 596 596 ((( 612 +((( 597 597 c) DR2: total payload includes 11 entries of data 598 598 ))) 615 +))) 599 599 600 600 ((( 618 +((( 601 601 d) DR3: total payload includes 22 entries of data. 602 602 ))) 621 +))) 603 603 604 604 ((( 624 +((( 605 605 If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0 606 606 ))) 627 +))) 607 607 608 608 609 609 **Example:** ... ... @@ -612,25 +612,25 @@ 612 612 613 613 [[image:image-20220523144455-1.png||height="335" width="735"]] 614 614 615 -(% border="1" style="background-color:#ffffcc; color:green; width:709px" %) 616 -|(% style="width:89px" %)Flash Addr|(% style="width:136px" %)Unix Time|(% style="width:39px" %)Ext|(% style="width:97px" %)BAT voltage|(% style="width:344px" %)Value 617 -|(% style="width:89px" %)80196E0|(% style="width:136px" %)21/1/19 04:27:03|(% style="width:39px" %)1|(% style="width:97px" %)3145|(% style="width:344px" %)sht_temp=22.00 sht_hum=32.6 ds_temp=327.67 618 -|(% style="width:89px" %)80196F0|(% style="width:136px" %)21/1/19 04:28:57|(% style="width:39px" %)1|(% style="width:97px" %)3145|(% style="width:344px" %)sht_temp=21.90 sht_hum=33.1 ds_temp=327.67 619 -|(% style="width:89px" %)8019700|(% style="width:136px" %)21/1/19 04:30:30|(% style="width:39px" %)1|(% style="width:97px" %)3145|(% style="width:344px" %)sht_temp=21.81 sht_hum=33.4 ds_temp=327.67 620 -|(% style="width:89px" %)8019710|(% style="width:136px" %)21/1/19 04:40:30|(% style="width:39px" %)1|(% style="width:97px" %)3145|(% style="width:344px" %)sht_temp=21.65 sht_hum=33.7 ds_temp=327.67 621 -|(% style="width:89px" %)8019720|(% style="width:136px" %)21/1/19 04:50:30|(% style="width:39px" %)1|(% style="width:97px" %)3147|(% style="width:344px" %)sht_temp=21.55 sht_hum=34.1 ds_temp=327.67 622 -|(% style="width:89px" %)8019730|(% style="width:136px" %)21/1/19 05:00:30|(% style="width:39px" %)1|(% style="width:97px" %)3149|(% style="width:344px" %)sht_temp=21.50 sht_hum=34.1 ds_temp=327.67 623 -|(% style="width:89px" %)8019740|(% style="width:136px" %)21/1/19 05:10:30|(% style="width:39px" %)1|(% style="width:97px" %)3149|(% style="width:344px" %)sht_temp=21.43 sht_hum=34.6 ds_temp=327.67 624 -|(% style="width:89px" %)8019750|(% style="width:136px" %)21/1/19 05:20:30|(% style="width:39px" %)1|(% style="width:97px" %)3151|(% style="width:344px" %)sht_temp=21.35 sht_hum=34.9 ds_temp=327.67 625 - 636 +((( 626 626 If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705 638 +))) 627 627 640 +((( 628 628 Where : Start time: 60065F97 = time 21/1/19 04:27:03 642 +))) 629 629 644 +((( 630 630 Stop time 60066DA7= time 21/1/19 05:27:03 646 +))) 631 631 648 +((( 649 + 650 +))) 632 632 652 +((( 633 633 LHT65N will uplink this payload. 654 +))) 634 634 635 635 [[image:image-20220523001219-13.png||height="421" width="727"]] 636 636 ... ... @@ -650,35 +650,58 @@ 650 650 651 651 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03 652 652 653 - 654 654 == 2.7 Alarm Mode == 655 655 656 656 Alarm mode feature is added since firmware v1.5. When device is in Alarm mode, it will check the built-in sensor temperature in a short interval. If the temperature exceeds the pre-configure range, it will send an uplink immediately. 657 657 678 +((( 679 +(% style="color:red" %)Note: Alarm mode will increase a little big the power consumption, we recommend extending the normal reading time when enabling this feature. 680 +))) 658 658 659 -Note: Alarm mode will increase a little big the power consumption, we recommend extending the normal reading time when enabling this feature. 682 +((( 683 +**AT Commands for Alarm mode:** 684 +))) 660 660 661 - 662 - AT Commands for Alarm mode:663 - 686 +(% class="box infomessage" %) 687 +((( 688 +((( 664 664 **AT+WMOD=1**: Enable/Disable Alarm Mode. (0:Disable, 1: Enable) 690 +))) 691 +))) 665 665 693 +(% class="box infomessage" %) 694 +((( 695 +((( 666 666 **AT+CITEMP=1**: The interval to check the temperature for Alarm. (Unit: minute) 697 +))) 698 +))) 667 667 668 - 669 - 670 670 == 2.8 LED Indicator == 671 671 702 +((( 672 672 The LHT65N has a triple color LED which for easy shows different stage. 704 +))) 673 673 706 +((( 674 674 While pressing ACT button, the LED will work as per LED status with ACT button. 708 +))) 675 675 710 +((( 676 676 In a normal working state: 712 +))) 677 677 678 -* For each uplink, the BLUE LED or RED LED will blink once. 679 -* BLUE LED when an external sensor is connected 680 -* RED LED when an external sensor is not connected 681 -* For each success downlink, the PURPLE LED will blink once 714 +* ((( 715 +For each uplink, the BLUE LED or RED LED will blink once. 716 +))) 717 +* ((( 718 +BLUE LED when an external sensor is connected 719 +))) 720 +* ((( 721 +RED LED when an external sensor is not connected 722 +))) 723 +* ((( 724 +For each success downlink, the PURPLE LED will blink once 725 +))) 682 682 683 683 ---- 684 684 ... ... @@ -704,29 +704,55 @@ 704 704 705 705 = 4. Configure LHT65N via AT Command or LoRaWAN Downlink = 706 706 751 +((( 707 707 Use can configure LHT65N via AT Command or LoRaWAN Downlink. 753 +))) 708 708 709 -* AT Command Connection: See [[FAQ>>path:#AT_COMMAND]]. 710 -* LoRaWAN Downlink instruction for different platforms: 755 +* ((( 756 +AT Command Connection: See [[FAQ>>path:#AT_COMMAND]]. 757 +))) 758 +* ((( 759 +LoRaWAN Downlink instruction for different platforms: 760 +))) 711 711 762 +((( 712 712 [[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]] 764 +))) 713 713 766 +((( 714 714 There are two kinds of commands to configure LHT65N, they are: 768 +))) 715 715 716 -* **General Commands**. 770 +((( 771 +(% style="color:#4f81bd" %)* **General Commands**. 772 +))) 717 717 774 +((( 718 718 These commands are to configure: 776 +))) 719 719 720 -* General system settings like: uplink interval. 721 -* LoRaWAN protocol & radio-related commands. 778 +* ((( 779 +General system settings like: uplink interval. 780 +))) 781 +* ((( 782 +LoRaWAN protocol & radio-related commands. 783 +))) 722 722 785 +((( 723 723 They are the same for all Dragino Devices which supports DLWS-005 LoRaWAN Stack(Note~*~*). These commands can be found on the wiki: 787 +))) 724 724 789 +((( 725 725 [[http:~~/~~/wiki.dragino.com/index.php?title=End_Device_Downlink_Command>>url:http://wiki.dragino.com/index.php?title=End_Device_Downlink_Command]] 791 +))) 726 726 727 -* **Commands special design for LHT65N** 793 +((( 794 +(% style="color:#4f81bd" %)* **Commands special design for LHT65N** 795 +))) 728 728 797 +((( 729 729 These commands are only valid for LHT65N, as below: 799 +))) 730 730 731 731 == 4.1 Set Transmit Interval Time == 732 732 ... ... @@ -734,29 +734,26 @@ 734 734 735 735 **AT Command: AT+TDC** 736 736 737 -(% border="1" %) 738 -|**Command Example**|**Function**|**Response** 739 -|AT+TDC?|Show current transmit Interval|((( 740 -30000 807 +[[image:image-20220523150701-2.png]] 741 741 742 -OK 743 - 744 -the interval is 30000ms = 30s 809 +((( 810 +**Downlink Command: 0x01** 745 745 ))) 746 -|AT+TDC=60000|Set Transmit Interval|((( 747 -OK 748 748 749 -Set transmit interval to 60000ms = 60 seconds 813 +((( 814 +Format: Command Code (0x01) followed by 3 bytes time value. 750 750 ))) 751 751 752 -**Downlink Command: 0x01** 753 - 754 -Format: Command Code (0x01) followed by 3 bytes time value. 755 - 817 +((( 756 756 If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01. 819 +))) 757 757 758 -* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds 759 -* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds 821 +* ((( 822 +**Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds 823 +))) 824 +* ((( 825 +**Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds 826 +))) 760 760 761 761 == 4.2 Set External Sensor Mode == 762 762 ... ... @@ -764,27 +764,29 @@ 764 764 765 765 **AT Command: AT+EXT** 766 766 767 -(% border="1" %) 768 -|**Command Example**|**Function**|**Response** 769 -|AT+EXT?|Get current external sensor mode|((( 770 -1 834 +[[image:image-20220523150759-3.png]] 771 771 772 -OK 773 - 774 -External Sensor mode =1 836 +((( 837 +**Downlink Command: 0xA2** 775 775 ))) 776 -|AT+EXT=1|(% colspan="2" %)Set external sensor mode to 1 777 -|AT+EXT=9|(% colspan="2" %)Set to external DS18B20 with timestamp 778 778 779 -**Downlink Command: 0xA2** 780 - 840 +((( 781 781 Total bytes: 2 ~~ 5 bytes 842 +))) 782 782 783 -Example: 844 +((( 845 +**Example:** 846 +))) 784 784 785 -* 0xA201: Set external sensor type to E1 786 -* 0xA209: Same as AT+EXT=9 787 -* 0xA20702003c,Same as AT+SETCNT=60 848 +* ((( 849 +0xA201: Set external sensor type to E1 850 +))) 851 +* ((( 852 +0xA209: Same as AT+EXT=9 853 +))) 854 +* ((( 855 +0xA20702003c,Same as AT+SETCNT=60 856 +))) 788 788 789 789 == 4.3 Enable/Disable uplink Temperature probe ID == 790 790 ... ... @@ -795,17 +795,14 @@ 795 795 796 796 PID is default set to disable (0) 797 797 798 - 799 799 **AT Command:** 800 800 801 -(% border="1" %) 802 -|**Command Example**|**Function**|**Response** 803 -|AT+PID=1|Enable PID uplink|OK 869 +[[image:image-20220523150928-4.png]] 804 804 805 805 **Downlink Command:** 806 806 807 -* 0xA800 àAT+PID=0808 -* 0xA801 àAT+PID=1873 +* 0xA800 **~-~->** AT+PID=0 874 +* 0xA801 **~-~->** AT+PID=1 809 809 810 810 == 4.4 Set Password == 811 811 ... ... @@ -813,19 +813,15 @@ 813 813 814 814 **AT Command: AT+PWORD** 815 815 816 -(% border="1" %) 817 -|**Command Example**|**Function**|**Response** 818 -|AT+PWORD=?|Show password|((( 819 -123456 882 +[[image:image-20220523151052-5.png]] 820 820 821 - 822 - OK884 +((( 885 +**Downlink Command:** 823 823 ))) 824 -|AT+PWORD=999999|Set password|OK 825 825 826 -**Downlink Command:** 827 - 888 +((( 828 828 No downlink command for this feature. 890 +))) 829 829 830 830 == 4.5 Quit AT Command == 831 831 ... ... @@ -833,15 +833,12 @@ 833 833 834 834 **AT Command: AT+DISAT** 835 835 836 -(% border="1" %) 837 -|**Command Example**|**Function**|**Response** 838 -|AT+DISAT|Quit AT Commands mode|OK 898 +[[image:image-20220523151132-6.png]] 839 839 840 840 **Downlink Command:** 841 841 842 842 No downlink command for this feature. 843 843 844 - 845 845 == 4.6 Set to sleep mode == 846 846 847 847 Feature: Set device to sleep mode ... ... @@ -848,15 +848,8 @@ 848 848 849 849 **AT Command: AT+SLEEP** 850 850 851 -(% border="1" %) 852 -| | | 853 -|**Command Example**|**Function**|**Response** 854 -|AT+SLEEP|Set to sleep mode|((( 855 -Clear all stored sensor data… 910 +[[image:image-20220523151218-7.png]] 856 856 857 -OK 858 -))) 859 - 860 860 **Downlink Command:** 861 861 862 862 * There is no downlink command to set to Sleep mode. ... ... @@ -867,14 +867,8 @@ 867 867 868 868 **AT Command:** 869 869 870 -(% border="1" %) 871 -|**Command Example**|**Function** 872 -|AT+TIMESTAMP=1611104352|((( 873 -OK 922 +[[image:image-20220523151253-8.png]] 874 874 875 -Set System time to 2021-01-20 00:59:12 876 -))) 877 - 878 878 **Downlink Command:** 879 879 880 880 0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352 ... ... @@ -881,15 +881,19 @@ 881 881 882 882 == 4.8 Set Time Sync Mode == 883 883 930 +((( 884 884 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command. 932 +))) 885 885 934 +((( 886 886 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. 936 +))) 887 887 888 - 938 +((( 889 889 **AT Command:** 940 +))) 890 890 891 -|**Command Example**|**Function** 892 -|AT+SYNCMOD=1|Enable Sync system time via LoRaWAN MAC Command (DeviceTimeReq) 942 +[[image:image-20220523151336-9.png]] 893 893 894 894 **Downlink Command:** 895 895 ... ... @@ -903,9 +903,7 @@ 903 903 904 904 **AT Command:** 905 905 906 -(% border="1" %) 907 -|**Command Example**|**Function** 908 -|AT+SYNCTDC=0x0A|Set SYNCTDC to 10 (0x0A), so the sync time is 10 days. 956 +[[image:image-20220523151411-10.png]] 909 909 910 910 **Downlink Command:** 911 911 ... ... @@ -917,51 +917,8 @@ 917 917 918 918 **AT Command: AT+PDTA** 919 919 920 -(% border="1" %) 921 -|**Command Example**|**Response** 922 -|((( 923 -AT+PDTA=1,3 968 +[[image:image-20220523151450-11.png]] 924 924 925 - 926 - 927 -Print page 1 to 3 928 -)))|((( 929 -8019500 19/6/26 16:48 1 2992 sht_temp=28.21 sht_hum=71.5 ds_temp=27.31 930 - 931 -8019510 19/6/26 16:53 1 2994 sht_temp=27.64 sht_hum=69.3 ds_temp=26.93 932 - 933 -8019520 19/6/26 16:58 1 2996 sht_temp=28.39 sht_hum=72.0 ds_temp=27.06 934 - 935 -8019530 19/6/26 17:03 1 2996 sht_temp=27.97 sht_hum=70.4 ds_temp=27.12 936 - 937 -8019540 19/6/26 17:08 1 2996 sht_temp=27.80 sht_hum=72.9 ds_temp=27.06 938 - 939 -8019550 19/6/26 17:13 1 2998 sht_temp=27.30 sht_hum=72.4 ds_temp=26.68 940 - 941 -8019560 19/6/26 17:22 1 2992 sht_temp=26.27 sht_hum=62.3 ds_temp=26.56 942 - 943 -8019570 944 - 945 -8019580 946 - 947 -8019590 948 - 949 -80195A0 950 - 951 -80195B0 952 - 953 -80195C0 954 - 955 -80195D0 956 - 957 -80195E0 958 - 959 -80195F0 960 - 961 - 962 -OK 963 -))) 964 - 965 965 **Downlink Command:** 966 966 967 967 No downlink commands for feature ... ... @@ -972,54 +972,41 @@ 972 972 973 973 **AT Command: AT+PLDTA** 974 974 975 -(% border="1" %) 976 -|**Command Example**|**Response** 977 -|((( 978 -AT+PLDTA=5 980 +[[image:image-20220523151524-12.png]] 979 979 982 +**Downlink Command:** 980 980 984 +No downlink commands for feature 981 981 982 -Print last 5 entries 983 -)))|((( 984 -Stop Tx and RTP events when read sensor data 986 +== 4.12 Clear Flash Record == 985 985 986 - 1 19/6/26 13:5913005sht_temp=27.09sht_hum=79.5ds_temp=26.75988 +Feature: Clear flash storage for data log feature. 987 987 988 - 219/6/26 14:04 1 3007 sht_temp=26.65 sht_hum=74.8ds_temp=26.43990 +**AT Command: AT+CLRDTA** 989 989 990 - 3 19/6/26 14:09 1 3007 sht_temp=26.91sht_hum=77.9 ds_temp=26.56992 +[[image:image-20220523151556-13.png]] 991 991 992 - 419/6/26 14:151 3007 sht_temp=26.93sht_hum=76.7 ds_temp=26.75994 +**Downlink Command: 0xA3** 993 993 994 - 519/6/26 14:2013007sht_temp=26.78sht_hum=76.6ds_temp=26.43996 +* Example: 0xA301 ~/~/Same as AT+CLRDTA 995 995 996 - StartTxandRTPevents998 +== 4.13 Auto Send None-ACK messages == 997 997 998 -OK 999 -))) 1000 +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. 1000 1000 1001 -**Downlink Command:** 1002 1002 1003 - Nodownlink commandsfor feature1003 +**AT Command: AT+PNACKMD** 1004 1004 1005 - ==4.12 Clear FlashRecord==1005 +The default factory setting is 0 1006 1006 1007 -Feature: Clear flash storage for data log feature. 1007 +(% border="1" style="background-color:#ffffcc; color:green; width:450px" %) 1008 +|=(% style="width: 171px;" %)**Command Example**|=(% style="width: 219px;" %)**Function**|=(% style="width: 119px;" %)**Response** 1009 +|(% style="width:171px" %)AT+PNACKMD=1|(% style="width:219px" %)Poll None-ACK message|(% style="width:119px" %)OK 1008 1008 1009 -** ATCommand:AT+CLRDTA**1011 +**Downlink Command: 0x34** 1010 1010 1011 -(% border="1" %) 1012 -|**Command Example**|**Function**|**Response** 1013 -|AT+CLRDTA|Clear date record|((( 1014 -Clear all stored sensor data… 1013 +* Example: 0x3401 ~/~/Same as AT+PNACKMD=1 1015 1015 1016 -OK 1017 -))) 1018 - 1019 -**Downlink Command: 0xA3** 1020 - 1021 -* Example: 0xA301 ~/~/Same as AT+CLRDTA 1022 - 1023 1023 = 5. Battery & How to replace = 1024 1024 1025 1025 == 5.1 Battery Type == ... ... @@ -1026,11 +1026,15 @@ 1026 1026 1027 1027 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. 1028 1028 1021 +((( 1029 1029 The discharge curve is not linear so can’t simply use percentage to show the battery level. Below is the battery performance. 1030 1030 [[image:image-20220515075034-1.png||height="208" width="644"]] 1024 +))) 1031 1031 1026 +((( 1032 1032 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery. 1033 1033 1029 +))) 1034 1034 1035 1035 == 5.2 Replace Battery == 1036 1036 ... ... @@ -1040,47 +1040,97 @@ 1040 1040 1041 1041 == 5.3 Battery Life Analyze == 1042 1042 1039 +((( 1043 1043 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: 1044 1044 https:~/~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf 1042 +))) 1045 1045 1046 1046 = 6. Order Info = 1047 1047 1048 -Part Number: (% class="mark" %)**LHT65N-XX** 1046 +((( 1047 +Part Number: (% style="color:#4f81bd" %)** LHT65N-XX-YY** 1048 +))) 1049 1049 1050 -**XX**: The default frequency band 1050 +((( 1051 +(% style="color:#4f81bd" %)**XX **(%%): The default frequency band 1052 +))) 1051 1051 1052 -* **AS923**: LoRaWAN AS923 band 1053 -* **AU915**: LoRaWAN AU915 band 1054 -* **EU433**: LoRaWAN EU433 band 1055 -* **EU868**: LoRaWAN EU868 band 1056 -* **KR920**: LoRaWAN KR920 band 1057 -* **US915**: LoRaWAN US915 band 1058 -* **IN865**: LoRaWAN IN865 band 1059 -* **CN470**: LoRaWAN CN470 band 1054 +* ((( 1055 +(% style="color:#4f81bd" %)** AS923**(%%): LoRaWAN AS923 band 1056 +))) 1057 +* ((( 1058 +(% style="color:#4f81bd" %)** AU915**(%%): LoRaWAN AU915 band 1059 +))) 1060 +* ((( 1061 +(% style="color:#4f81bd" %)** EU433**(%%): LoRaWAN EU433 band 1062 +))) 1063 +* ((( 1064 +(% style="color:#4f81bd" %)** EU868**(%%): LoRaWAN EU868 band 1065 +))) 1066 +* ((( 1067 +(% style="color:#4f81bd" %)** KR920**(%%): LoRaWAN KR920 band 1068 +))) 1069 +* ((( 1070 +(% style="color:#4f81bd" %)** US915**(%%): LoRaWAN US915 band 1071 +))) 1072 +* ((( 1073 +(% style="color:#4f81bd" %)** IN865**(%%): LoRaWAN IN865 band 1074 +))) 1075 +* ((( 1076 +(% style="color:#4f81bd" %)** CN470**(%%): LoRaWAN CN470 band 1077 +))) 1060 1060 1061 -**YY**: Sensor Accessories 1079 +((( 1080 +(% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories 1081 +))) 1062 1062 1063 -* **E3**: External Temperature Probe 1083 +* ((( 1084 +(% style="color:#4f81bd" %)**E3**(%%): External Temperature Probe 1085 +))) 1064 1064 1065 1065 = 7. Packing Info = 1066 1066 1089 +((( 1067 1067 **Package Includes**: 1091 +))) 1068 1068 1069 -* LHT65N Temperature & Humidity Sensor x 1 1070 -* Program cable x 1 1071 -* Optional external sensor 1093 +* ((( 1094 +LHT65N Temperature & Humidity Sensor x 1 1095 +))) 1096 +* ((( 1097 +Program cable x 1 1098 +))) 1099 +* ((( 1100 +Optional external sensor 1101 +))) 1072 1072 1103 +((( 1073 1073 **Dimension and weight**: 1105 +))) 1074 1074 1075 -* Device Size: 13.5 x 7 x 3 cm 1076 -* Device Weight: 105g 1077 -* Package Size / pcs : 14.5 x 8 x 5 cm 1078 -* Weight / pcs : 170g 1107 +* ((( 1108 +Device Size: 13.5 x 7 x 3 cm 1109 +))) 1110 +* ((( 1111 +Device Weight: 105g 1112 +))) 1113 +* ((( 1114 +Package Size / pcs : 14.5 x 8 x 5 cm 1115 +))) 1116 +* ((( 1117 +Weight / pcs : 170g 1118 +))) 1079 1079 1080 1080 = 8. FCC Warning = 1081 1081 1122 +((( 1082 1082 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions: 1124 +))) 1083 1083 1126 +((( 1084 1084 (1) This device may not cause harmful interference; 1128 +))) 1085 1085 1130 +((( 1086 1086 (2) this device must accept any interference received, including interference that may cause undesired operation. 1132 +)))
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