Changes for page LHT52 - LoRaWAN Temperature & Humidity Sensor User Manual
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... ... @@ -1,12 +1,19 @@ 1 +(% style="text-align:center" %) 2 +[[image:image-20220523111447-1.jpeg||height="448" width="448"]] 3 + 1 1 {{box cssClass="floatinginfobox" title="**Contents**"}} 2 2 {{toc/}} 3 3 {{/box}} 4 4 5 - = Overview =8 +{{toc/}} 6 6 7 -[[image:LHT65N_10.png||alt="LHT65_Image" height="265" width="265"]] 8 8 9 9 12 += 1.Introduction = 13 + 14 +== 1.1 What is LHT65N Temperature & Humidity Sensor == 15 + 16 + 10 10 The Dragino LHT65N Temperature & Humidity sensor is a Long Range LoRaWAN Sensor. It includes a(% class="mark" %) **built-in Temperature & Humidity sensor**(%%) and has an external sensor connector to connect to an external (% class="mark" %)**Temperature Sensor**(%%)**.** 11 11 12 12 The LHT65N allows users to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, building automation, and so on. ... ... @@ -19,9 +19,8 @@ 19 19 20 20 *The actual battery life depends on how often to send data, please see the battery analyzer chapter. 21 21 29 +== 1.2 Features == 22 22 23 -== Features: == 24 - 25 25 * Wall mountable 26 26 * LoRaWAN v1.0.3 Class A protocol 27 27 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915 ... ... @@ -34,7 +34,7 @@ 34 34 * Tri-color LED to indicate working status 35 35 * Datalog feature 36 36 37 -== Specification :==43 +== 1.3 Specification == 38 38 39 39 **Built-in Temperature Sensor:** 40 40 ... ... @@ -57,9 +57,9 @@ 57 57 * ±2°C accuracy from -55°C to +125°C 58 58 * Operating Range: -55 °C ~~ 125 °C 59 59 60 -= Connect LHT65N to IoT Server = 66 += 2. Connect LHT65N to IoT Server = 61 61 62 -== How does LHT65N work? == 68 +== 2.1 How does LHT65N work? == 63 63 64 64 LHT65N is configured as LoRaWAN OTAA Class A mode by default. Each LHT65N is shipped with a worldwide unique set of OTAA keys. To use LHT65N in a LoRaWAN network, first, we need to put the OTAA keys in LoRaWAN Network Server and then activate LHT65N. 65 65 ... ... @@ -66,7 +66,7 @@ 66 66 If LHT65N is under the coverage of this LoRaWAN network. LHT65N can join the LoRaWAN network automatically. After successfully joining, LHT65N will start to measure environment temperature and humidity, and start to transmit sensor data to the LoRaWAN server. The default period for each uplink is 20 minutes. 67 67 68 68 69 -== How to Activate LHT65N? == 75 +== 2.2 How to Activate LHT65N? == 70 70 71 71 The LHT65N has two working modes: 72 72 ... ... @@ -77,12 +77,13 @@ 77 77 78 78 [[image:image-20220515123819-1.png||height="379" width="317"]] 79 79 86 +(% border="1" %) 80 80 |**Behavior on ACT**|**Function**|**Action** 81 81 |**Pressing ACT between 1s < time < 3s**|Test uplink status|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. 82 82 |**Pressing ACT for more than 3s**|Active Device|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. 83 83 |**Fast press ACT 5 times**|Deactivate Device|red led will solid on for 5 seconds. This means LHT65N is in Deep Sleep Mode. 84 84 85 -== Example to join LoRaWAN network == 92 +== 2.3 Example to join LoRaWAN network == 86 86 87 87 (% class="wikigeneratedid" %) 88 88 This section shows an example of how to join the TTN V3 LoRaWAN IoT server. Use with other LoRaWAN IoT servers is of a similar procedure. ... ... @@ -93,7 +93,7 @@ 93 93 Assume the LPS8N is already set to connect to [[TTN V3 network>>url:https://eu1.cloud.thethings.network]], So it provides network coverage for LHT65N. Next we need to add the LHT65N device in TTN V3: 94 94 95 95 96 -=== **Step 1**: Create Device n TTN ===103 +=== 2.3.1 Step 1: Create Device n TTN === 97 97 98 98 Create a device in TTN V3 with the OTAA keys from LHT65N. 99 99 ... ... @@ -123,7 +123,7 @@ 123 123 [[image:image-20220522233118-7.png]] 124 124 125 125 126 -=== Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. === 133 +=== 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. === 127 127 128 128 Use ACT button to activate LHT65N and it will auto-join to the TTN V3 network. After join success, it will start to upload sensor data to TTN V3 and user can see in the panel. 129 129 ... ... @@ -130,7 +130,7 @@ 130 130 [[image:image-20220522233300-8.png]] 131 131 132 132 133 -== Uplink Payload :==140 +== 2.4 Uplink Payload == 134 134 135 135 The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and(% class="mark" %) every 20 minutes(%%) send one uplink by default. 136 136 ... ... @@ -137,7 +137,7 @@ 137 137 After each uplink, the (% class="mark" %)BLUE LED(%%) will blink once. 138 138 139 139 140 -(% style="width:572px" %) 147 +(% border="1" style="width:572px" %) 141 141 |(% style="width:106px" %)**Size(bytes)**|(% style="width:71px" %)**2**|(% style="width:128px" %)**2**|(% style="width:103px" %)**2**|(% style="width:72px" %)**1**|(% style="width:89px" %)**4** 142 142 |(% style="width:106px" %)**Value**|(% style="width:71px" %)[[BAT>>path:#Battery]]|(% style="width:128px" %)((( 143 143 [[Built-In>>path:#SHT20_Temperature]] ... ... @@ -153,7 +153,7 @@ 153 153 * The 7th byte (EXT #): defines the external sensor model. 154 154 * The 8^^th^^ ~~ 11^^th^^ byte: the value for external sensor value. The definition is based on external sensor type. (If EXT=0, there won’t be these four bytes.) 155 155 156 -=== Decoder in TTN V3 === 163 +=== 2.4.1 Decoder in TTN V3 === 157 157 158 158 When the uplink payload arrives TTNv3, it shows HEX format and not friendly to read. We can add LHT65N decoder in TTNv3 for friendly reading. 159 159 ... ... @@ -164,7 +164,7 @@ 164 164 [[image:image-20220522234118-10.png]] 165 165 166 166 167 -=== BAT-Battery Info === 174 +=== 2.4.2 BAT-Battery Info === 168 168 169 169 These two bytes of BAT include the battery state and the actually voltage 170 170 ... ... @@ -189,7 +189,7 @@ 189 189 * BAT status=(0Xcba4>>14)&0xFF=11(B),very good 190 190 * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV 191 191 192 -=== Built-in Temperature === 199 +=== 2.4.3 Built-in Temperature === 193 193 194 194 [[image:image-20220522235639-2.png]] 195 195 ... ... @@ -199,13 +199,13 @@ 199 199 200 200 * Temperature: (0xF5C6-65536)/100=-26.18℃ 201 201 202 -=== Built-in Humidity === 209 +=== 2.4.4 Built-in Humidity === 203 203 204 204 [[image:image-20220522235639-4.png]] 205 205 206 206 * Humidity: 0x025C/10=60.4% 207 207 208 -=== Ext # === 215 +=== 2.4.5 Ext # === 209 209 210 210 Bytes for External Sensor: 211 211 ... ... @@ -214,19 +214,16 @@ 214 214 |(% style="width:139px" %)0x01|(% style="width:484px" %)Sensor E3, Temperature Sensor 215 215 |(% style="width:139px" %)0x09|(% style="width:484px" %)Sensor E3, Temperature Sensor, Datalog Mod 216 216 217 -=== Ext value === 224 +=== 2.4.6 Ext value === 218 218 219 -==== Ext~=1, E3 Temperature Sensor ==== 226 +==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ==== 220 220 221 221 [[image:image-20220522235639-5.png]] 222 222 223 - 224 224 * DS18B20 temp=0x0ADD/100=27.81℃ 225 225 226 226 The last 2 bytes of data are meaningless 227 227 228 - 229 - 230 230 [[image:image-20220522235639-6.png]] 231 231 232 232 * External temperature= (0xF54F-65536)/100=-27.37℃ ... ... @@ -233,16 +233,15 @@ 233 233 234 234 The last 2 bytes of data are meaningless 235 235 236 - 237 237 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃ 238 238 239 239 240 -==== Ext~=9, E3 sensor with Unix Timestamp ==== 243 +==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ==== 241 241 242 242 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: 243 243 244 244 245 -(% style="width:697px" %) 248 +(% border="1" style="width:697px" %) 246 246 |(% style="width:96px" %)**Size(bytes)**|(% style="width:164px" %)**2**|(% style="width:104px" %)**2**|(% style="width:106px" %)**2**|(% style="width:108px" %)**1**|(% style="width:116px" %)**4** 247 247 |(% style="width:96px" %)**Value**|(% style="width:164px" %)[[External temperature>>path:#DS18b20_value]]|(% style="width:104px" %)((( 248 248 [[Built-In>>path:#SHT20_Temperature]] ... ... @@ -260,9 +260,9 @@ 260 260 [[Time Stamp>>path:#Unix_Time_Stamp]] 261 261 ))) 262 262 263 -* **Battery status & **[[(% class="wikiinternallink wikiinternallink" %)**Built-in Humidity**>>path:#SHT20_Humidity]] 266 +* **Battery status & **[[(% class="wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink" %)**Built-in Humidity**>>path:#SHT20_Humidity]] 264 264 265 -(% style="width:587px" %) 268 +(% border="1" style="width:587px" %) 266 266 |Bit(bit)|(% style="width:280px" %)[15:14]|(% style="width:136px" %)[11:0] 267 267 |Value|(% style="width:280px" %)((( 268 268 BAT Status ... ... @@ -282,7 +282,7 @@ 282 282 283 283 * **Status & Ext Byte** 284 284 285 -(% style="width:732px" %) 288 +(% border="1" style="width:732px" %) 286 286 |(% style="width:128px" %)**Bits**|(% style="width:102px" %)**7**|(% style="width:145px" %)**6**|(% style="width:117px" %)**5**|(% style="width:147px" %)**4**|(% style="width:90px" %)**[3:0]** 287 287 |(% style="width:128px" %)**Status & Ext**|(% style="width:102px" %)Not Defined|(% style="width:145px" %)Poll Message Flag|(% style="width:117px" %)Sync time OK|(% style="width:147px" %)Unix Time Request|(% style="width:90px" %)((( 288 288 Ext: ... ... @@ -294,11 +294,10 @@ 294 294 * 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. 295 295 * Unix Time Request:1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65N will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this) 296 296 297 -== Show data on Datacake == 300 +== 2.5 Show data on Datacake == 298 298 299 299 Datacake IoT platform provides a human-friendly interface to show the sensor data, once we have sensor data in TTN V3, we can use Datacake to connect to TTN V3 and see the data in Datacake. Below are the steps: 300 300 301 - 302 302 **Step 1**: Be sure that your device is programmed and properly connected to the LoRaWAN network. 303 303 304 304 **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. ... ... @@ -323,11 +323,11 @@ 323 323 [[image:image-20220523000825-10.png||height="432" width="762"]] 324 324 325 325 326 -== Datalog Feature == 328 +== 2.6 Datalog Feature == 327 327 328 328 This feature is always enabled. When user wants to retrieve the sensor value, he can send a poll command from the IoT platform to ask LHT65N to send the value in the required time slot. 329 329 330 -=== Unix TimeStamp === 332 +=== 2.6.1 Unix TimeStamp === 331 331 332 332 LHT65N uses Unix TimeStamp format based on 333 333 ... ... @@ -338,12 +338,12 @@ 338 338 339 339 Below is the converter example 340 340 341 -[[image:image-20220523001219-12.png||height="3 53" width="853"]]343 +[[image:image-20220523001219-12.png||height="302" width="730"]] 342 342 343 343 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25 344 344 345 345 346 -=== Set Device Time === 348 +=== 2.6.2 Set Device Time === 347 347 348 348 There are two ways to set device’s time: 349 349 ... ... @@ -361,16 +361,15 @@ 361 361 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server. 362 362 363 363 364 -=== Poll sensor value === 366 +=== 2.6.3 Poll sensor value === 365 365 366 366 User can poll sensor value based on timestamps from the server. Below is the downlink command. 367 367 368 368 369 -(% style="width:454px" %) 371 +(% border="1" style="width:454px" %) 370 370 |(% style="width:69px" %)1byte|(% style="width:129px" %)4bytes|(% style="width:134px" %)4bytes|(% style="width:119px" %)1byte 371 371 |(% style="width:69px" %)31|(% style="width:129px" %)Timestamp start|(% style="width:134px" %)Timestamp end|(% style="width:119px" %)Uplink Interval 372 372 373 - 374 374 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. 375 375 376 376 ... ... @@ -381,7 +381,7 @@ 381 381 Uplink Internal =5s,means LHT65N will send one packet every 5s. range 5~~255s. 382 382 383 383 384 -=== Datalog Uplink payload === 385 +=== 2.6.4 Datalog Uplink payload === 385 385 386 386 The Datalog poll reply uplink will use below payload format. 387 387 ... ... @@ -388,6 +388,7 @@ 388 388 389 389 Retrieval data payload 390 390 392 +(% border="1" %) 391 391 |**Size(bytes)**|**2**|**2**|**2**|**1**|**4** 392 392 |**Value**|[[External sensor data>>path:#Extension_sensor_value]]|((( 393 393 [[Built-In>>path:#SHT20_Temperature]] ... ... @@ -403,10 +403,10 @@ 403 403 404 404 ))) 405 405 406 - 407 407 Poll message flag & Ext 408 408 409 409 411 +(% border="1" %) 410 410 |**Bits**|**7**|**6**|**5**|**4**|**[3:0]** 411 411 |**Status & Ext**|Not Defined|Poll Message Flag|Sync time OK|Unix Time Request|((( 412 412 Ext: ... ... @@ -414,7 +414,6 @@ 414 414 0b(1001) 415 415 ))) 416 416 417 - 418 418 Poll Message Flag: 1: This message is a poll message reply. 419 419 420 420 * Poll Message Flag is set to 1. ... ... @@ -467,7 +467,7 @@ 467 467 468 468 LHT65N will uplink this payload. 469 469 470 -[[image:image-20220523001219-13.png]] 471 +[[image:image-20220523001219-13.png||height="421" width="727"]] 471 471 472 472 7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E 473 473 ... ... @@ -486,7 +486,7 @@ 486 486 Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03 487 487 488 488 489 -== Alarm Mode == 490 +== 2.7 Alarm Mode == 490 490 491 491 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. 492 492 ... ... @@ -502,7 +502,7 @@ 502 502 503 503 504 504 505 -== LED Indicator == 506 +== 2.8 LED Indicator == 506 506 507 507 The LHT65N has a triple color LED which for easy shows different stage. 508 508 ... ... @@ -517,17 +517,14 @@ 517 517 518 518 ---- 519 519 520 -== Installation == 521 +== 2.9 Installation == 521 521 522 -[[image:image-20220516231650-1.png||height=" 632" width="620"]]523 +[[image:image-20220516231650-1.png||height="436" width="428"]] 523 523 525 += 3. Sensors & Accessories = 524 524 527 +== 3.1 E3 Temperature Probe == 525 525 526 - 527 -= Sensors & Accessories = 528 - 529 -== E3 Temperature Probe == 530 - 531 531 [[image:image-20220515080154-4.png||height="182" width="161"]] [[image:image-20220515080330-5.png||height="201" width="195"]] 532 532 533 533 ... ... @@ -539,36 +539,350 @@ 539 539 * Operating Range: -40 ~~ 125 °C 540 540 * -55°C to 125°C 541 541 * Working voltage 2.35v ~~ 5v 542 - 543 543 544 -= Battery&Howto replace=541 += 4. Configure LHT65N via AT Command or LoRaWAN Downlink = 545 545 546 - ==BatteryType==543 +Use can configure LHT65N via AT Command or LoRaWAN Downlink. 547 547 545 +* AT Command Connection: See [[FAQ>>path:#AT_COMMAND]]. 546 +* LoRaWAN Downlink instruction for different platforms: 547 + 548 +[[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]] 549 + 550 +There are two kinds of commands to configure LHT65N, they are: 551 + 552 +* **General Commands**. 553 + 554 +These commands are to configure: 555 + 556 +* General system settings like: uplink interval. 557 +* LoRaWAN protocol & radio-related commands. 558 + 559 +They are the same for all Dragino Devices which supports DLWS-005 LoRaWAN Stack(Note~*~*). These commands can be found on the wiki: 560 + 561 +[[http:~~/~~/wiki.dragino.com/index.php?title=End_Device_Downlink_Command>>url:http://wiki.dragino.com/index.php?title=End_Device_Downlink_Command]] 562 + 563 +* **Commands special design for LHT65N** 564 + 565 +These commands are only valid for LHT65N, as below: 566 + 567 +== 4.1 Set Transmit Interval Time == 568 + 569 +Feature: Change LoRaWAN End Node Transmit Interval. 570 + 571 +**AT Command: AT+TDC** 572 + 573 +(% border="1" %) 574 +|**Command Example**|**Function**|**Response** 575 +|AT+TDC?|Show current transmit Interval|((( 576 +30000 577 + 578 +OK 579 + 580 +the interval is 30000ms = 30s 581 +))) 582 +|AT+TDC=60000|Set Transmit Interval|((( 583 +OK 584 + 585 +Set transmit interval to 60000ms = 60 seconds 586 +))) 587 + 588 +**Downlink Command: 0x01** 589 + 590 +Format: Command Code (0x01) followed by 3 bytes time value. 591 + 592 +If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01. 593 + 594 +* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds 595 +* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds 596 + 597 +== 4.2 Set External Sensor Mode == 598 + 599 +Feature: Change External Sensor Mode. 600 + 601 +**AT Command: AT+EXT** 602 + 603 +(% border="1" %) 604 +|**Command Example**|**Function**|**Response** 605 +|AT+EXT?|Get current external sensor mode|((( 606 +1 607 + 608 +OK 609 + 610 +External Sensor mode =1 611 +))) 612 +|AT+EXT=1|(% colspan="2" %)Set external sensor mode to 1 613 +|AT+EXT=9|(% colspan="2" %)Set to external DS18B20 with timestamp 614 + 615 +**Downlink Command: 0xA2** 616 + 617 +Total bytes: 2 ~~ 5 bytes 618 + 619 +Example: 620 + 621 +* 0xA201: Set external sensor type to E1 622 +* 0xA209: Same as AT+EXT=9 623 +* 0xA20702003c,Same as AT+SETCNT=60 624 + 625 +== 4.3 Enable/Disable uplink Temperature probe ID == 626 + 627 +Feature: If PID is enabled, device will send the temperature probe ID on: 628 + 629 +* First Packet after OTAA Join 630 +* Every 24 hours since the first packet. 631 + 632 +PID is default set to disable (0) 633 + 634 + 635 +**AT Command:** 636 + 637 +(% border="1" %) 638 +|**Command Example**|**Function**|**Response** 639 +|AT+PID=1|Enable PID uplink|OK 640 + 641 +**Downlink Command:** 642 + 643 +* 0xA800 à AT+PID=0 644 +* 0xA801 à AT+PID=1 645 + 646 +== 4.4 Set Password == 647 + 648 +Feature: Set device password, max 9 digits 649 + 650 +**AT Command: AT+PWORD** 651 + 652 +(% border="1" %) 653 +|**Command Example**|**Function**|**Response** 654 +|AT+PWORD=?|Show password|((( 655 +123456 656 + 657 + 658 +OK 659 +))) 660 +|AT+PWORD=999999|Set password|OK 661 + 662 +**Downlink Command:** 663 + 664 +No downlink command for this feature. 665 + 666 +== 4.5 Quit AT Command == 667 + 668 +Feature: Quit AT Command mode, so user needs to input password again before use AT Commands. 669 + 670 +**AT Command: AT+DISAT** 671 + 672 +(% border="1" %) 673 +|**Command Example**|**Function**|**Response** 674 +|AT+DISAT|Quit AT Commands mode|OK 675 + 676 +**Downlink Command:** 677 + 678 +No downlink command for this feature. 679 + 680 + 681 +== 4.6 Set to sleep mode == 682 + 683 +Feature: Set device to sleep mode 684 + 685 +**AT Command: AT+SLEEP** 686 + 687 +(% border="1" %) 688 +| | | 689 +|**Command Example**|**Function**|**Response** 690 +|AT+SLEEP|Set to sleep mode|((( 691 +Clear all stored sensor data… 692 + 693 +OK 694 +))) 695 + 696 +**Downlink Command:** 697 + 698 +* There is no downlink command to set to Sleep mode. 699 + 700 +== 4.7 Set system time == 701 + 702 +Feature: Set system time, unix format. [[See here for format detail.>>path:#TimeStamp]] 703 + 704 +**AT Command:** 705 + 706 +(% border="1" %) 707 +|**Command Example**|**Function** 708 +|AT+TIMESTAMP=1611104352|((( 709 +OK 710 + 711 +Set System time to 2021-01-20 00:59:12 712 +))) 713 + 714 +**Downlink Command:** 715 + 716 +0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352 717 + 718 +== 4.8 Set Time Sync Mode == 719 + 720 +Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command. 721 + 722 +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. 723 + 724 + 725 +**AT Command:** 726 + 727 +|**Command Example**|**Function** 728 +|AT+SYNCMOD=1|Enable Sync system time via LoRaWAN MAC Command (DeviceTimeReq) 729 + 730 +**Downlink Command:** 731 + 732 +0x28 01 ~/~/ Same As AT+SYNCMOD=1 733 + 734 +0x28 00 ~/~/ Same As AT+SYNCMOD=0 735 + 736 +== 4.9 Set Time Sync Interval == 737 + 738 +Feature: Define System time sync interval. SYNCTDC default value: 10 days. 739 + 740 +**AT Command:** 741 + 742 +(% border="1" %) 743 +|**Command Example**|**Function** 744 +|AT+SYNCTDC=0x0A|Set SYNCTDC to 10 (0x0A), so the sync time is 10 days. 745 + 746 +**Downlink Command:** 747 + 748 +0x29 0A ~/~/ Same as AT+SYNCTDC=0x0A 749 + 750 +== 4.10 Print data entries base on page. == 751 + 752 +Feature: Print the sector data from start page to stop page (max is 416 pages). 753 + 754 +**AT Command: AT+PDTA** 755 + 756 +(% border="1" %) 757 +|**Command Example**|**Response** 758 +|((( 759 +AT+PDTA=1,3 760 + 761 + 762 + 763 +Print page 1 to 3 764 +)))|((( 765 +8019500 19/6/26 16:48 1 2992 sht_temp=28.21 sht_hum=71.5 ds_temp=27.31 766 + 767 +8019510 19/6/26 16:53 1 2994 sht_temp=27.64 sht_hum=69.3 ds_temp=26.93 768 + 769 +8019520 19/6/26 16:58 1 2996 sht_temp=28.39 sht_hum=72.0 ds_temp=27.06 770 + 771 +8019530 19/6/26 17:03 1 2996 sht_temp=27.97 sht_hum=70.4 ds_temp=27.12 772 + 773 +8019540 19/6/26 17:08 1 2996 sht_temp=27.80 sht_hum=72.9 ds_temp=27.06 774 + 775 +8019550 19/6/26 17:13 1 2998 sht_temp=27.30 sht_hum=72.4 ds_temp=26.68 776 + 777 +8019560 19/6/26 17:22 1 2992 sht_temp=26.27 sht_hum=62.3 ds_temp=26.56 778 + 779 +8019570 780 + 781 +8019580 782 + 783 +8019590 784 + 785 +80195A0 786 + 787 +80195B0 788 + 789 +80195C0 790 + 791 +80195D0 792 + 793 +80195E0 794 + 795 +80195F0 796 + 797 + 798 +OK 799 +))) 800 + 801 +**Downlink Command:** 802 + 803 +No downlink commands for feature 804 + 805 +== 4.11 Print last few data entries. == 806 + 807 +Feature: Print the last few data entries 808 + 809 +**AT Command: AT+PLDTA** 810 + 811 +(% border="1" %) 812 +|**Command Example**|**Response** 813 +|((( 814 +AT+PLDTA=5 815 + 816 + 817 + 818 +Print last 5 entries 819 +)))|((( 820 +Stop Tx and RTP events when read sensor data 821 + 822 +1 19/6/26 13:59 1 3005 sht_temp=27.09 sht_hum=79.5 ds_temp=26.75 823 + 824 +2 19/6/26 14:04 1 3007 sht_temp=26.65 sht_hum=74.8 ds_temp=26.43 825 + 826 +3 19/6/26 14:09 1 3007 sht_temp=26.91 sht_hum=77.9 ds_temp=26.56 827 + 828 +4 19/6/26 14:15 1 3007 sht_temp=26.93 sht_hum=76.7 ds_temp=26.75 829 + 830 +5 19/6/26 14:20 1 3007 sht_temp=26.78 sht_hum=76.6 ds_temp=26.43 831 + 832 +Start Tx and RTP events 833 + 834 +OK 835 +))) 836 + 837 +**Downlink Command:** 838 + 839 +No downlink commands for feature 840 + 841 +== 4.12 Clear Flash Record == 842 + 843 +Feature: Clear flash storage for data log feature. 844 + 845 +**AT Command: AT+CLRDTA** 846 + 847 +(% border="1" %) 848 +|**Command Example**|**Function**|**Response** 849 +|AT+CLRDTA|Clear date record|((( 850 +Clear all stored sensor data… 851 + 852 +OK 853 +))) 854 + 855 +**Downlink Command: 0xA3** 856 + 857 +* Example: 0xA301 ~/~/Same as AT+CLRDTA 858 + 859 += 5. Battery & How to replace = 860 + 861 +== 5.1 Battery Type == 862 + 548 548 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. 549 549 550 550 The discharge curve is not linear so can’t simply use percentage to show the battery level. Below is the battery performance. 551 551 [[image:image-20220515075034-1.png||height="208" width="644"]] 552 552 553 - 554 554 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery. 555 555 556 556 557 -== Replace Battery == 871 +== 5.2 Replace Battery == 558 558 559 559 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. 560 560 561 561 [[image:image-20220515075440-2.png||height="338" width="272"]][[image:image-20220515075625-3.png||height="193" width="257"]] 562 562 877 +== 5.3 Battery Life Analyze == 563 563 564 -== Battery Life Analyze == 565 - 566 566 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: 567 567 https:~/~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf 568 568 882 += 6. Order Info = 569 569 570 -= Order Info = 571 - 572 572 Part Number: (% class="mark" %)**LHT65N-XX** 573 573 574 574 **XX**: The default frequency band ... ... @@ -586,7 +586,7 @@ 586 586 587 587 * **E3**: External Temperature Probe 588 588 589 -= Packing Info = 901 += 7. Packing Info = 590 590 591 591 **Package Includes**: 592 592 ... ... @@ -601,10 +601,10 @@ 601 601 * Package Size / pcs : 14.5 x 8 x 5 cm 602 602 * Weight / pcs : 170g 603 603 604 -= FCC Warning = 916 += 8. FCC Warning = 605 605 606 606 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions: 607 607 608 -(1) This device may not cause harmful interference , and920 +(1) This device may not cause harmful interference; 609 609 610 -(2) this device must accept any interference received, including interference that may cause undesired operation 922 +(2) this device must accept any interference received, including interference that may cause undesired operation.
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