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Last modified by Mengting Qiu on 2023/12/14 11:15
From version 82.3
edited by Xiaoling
on 2023/06/14 16:32
Change comment: There is no comment for this version
To version 80.3
edited by Xiaoling
on 2023/06/14 15:53
Change comment: There is no comment for this version

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... ... @@ -35,7 +35,7 @@
35 35  
36 36  Each LDS12-LB is pre-load with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect after power on.
37 37  
38 -[[image:image-20230614162334-2.png||height="468" width="800"]]
38 +[[image:image-20230613140115-3.png||height="453" width="800"]]
39 39  
40 40  
41 41  == 1.2 ​Features ==
... ... @@ -44,16 +44,19 @@
44 44  * LoRaWAN 1.0.3 Class A
45 45  * Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
46 46  * Ultra-low power consumption
47 -* Laser technology for distance detection
48 -* Measure Distance: 0.1m~~12m @ 90% Reflectivity
49 -* Accuracy :  ±5cm@(0.1-6m), ±1%@(6m-12m)
50 -* Monitor Battery Level
47 +* Liquid Level Measurement by Ultrasonic technology
48 +* Measure through container, No need to contact Liquid
49 +* Valid level range 20mm - 2000mm
50 +* Accuracy: ±(5mm+S*0.5%) (S: Measure Value)
51 +* Cable Length : 25cm
51 51  * Support Bluetooth v5.1 and LoRaWAN remote configure
52 52  * Support wireless OTA update firmware
53 53  * AT Commands to change parameters
54 54  * Downlink to change configure
56 +* IP66 Waterproof Enclosure
55 55  * 8500mAh Battery for long term use
56 56  
59 +
57 57  == 1.3 Specification ==
58 58  
59 59  
... ... @@ -62,23 +62,6 @@
62 62  * Supply Voltage: built in 8500mAh Li-SOCI2 battery , 2.5v ~~ 3.6v
63 63  * Operating Temperature: -40 ~~ 85°C
64 64  
65 -(% style="color:#037691" %)**Probe Specification:**
66 -
67 -* Storage temperature：-20℃~~75℃
68 -* Operating temperature : -20℃~~60℃
69 -* Measure Distance:
70 -** 0.1m ~~ 12m @ 90% Reflectivity
71 -** 0.1m ~~ 4m @ 10% Reflectivity
72 -* Accuracy : ±5cm@(0.1-6m), ±1%@(6m-12m)
73 -* Distance resolution : 5mm
74 -* Ambient light immunity : 70klux
75 -* Enclosure rating : IP65
76 -* Light source : LED
77 -* Central wavelength : 850nm
78 -* FOV : 3.6°
79 -* Material of enclosure : ABS+PC
80 -* Wire length : 25cm
81 -
82 82  (% style="color:#037691" %)**LoRa Spec:**
83 83  
84 84  * Frequency Range,  Band 1 (HF): 862 ~~ 1020 Mhz
... ... @@ -99,6 +99,7 @@
99 99  * Sleep Mode: 5uA @ 3.3v
100 100  * LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm
101 101  
88 +
102 102  == 1.4 Suitable Container & Liquid ==
103 103  
104 104  
... ... @@ -109,14 +109,15 @@
109 109  ** Pure non metal material: <10 mm
110 110  * Pure liquid without irregular deposition.
111 111  
99 +
112 112  (% style="display:none" %)
113 113  
114 -== 1.5 Install LDS12-LB ==
102 +== 1.5 Install DDS20-LB ==
115 115  
116 116  
117 117  (% style="color:blue" %)**Step 1**(%%):  ** Choose the installation point.**
118 118  
119 -LDS12-LB (% style="color:red" %)**MUST**(%%) be installed on the container bottom middle position.
107 +DDS20-LB (% style="color:red" %)**MUST**(%%) be installed on the container bottom middle position.
120 120  
121 121  [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS20%20-%20LoRaWAN%20Liquid%20Level%20Sensor%20User%20Manual/WebHome/image-20220615091045-3.png?rev=1.1||alt="image-20220615091045-3.png"]]
122 122  
... ... @@ -142,15 +142,15 @@
142 142  )))
143 143  
144 144  (((
145 -Power on LDS12-LB, check if the blue LED is on, If the blue LED is on, means the sensor works. Then put ultrasonic coupling paste on the sensor and put it tightly on the installation point.
133 +Power on DDS20-LB, check if the blue LED is on, If the blue LED is on, means the sensor works. Then put ultrasonic coupling paste on the sensor and put it tightly on the installation point.
146 146  )))
147 147  
148 148  (((
149 -It is necessary to put the coupling paste between the sensor and the container, otherwise LDS12-LB won't detect the liquid level.
137 +It is necessary to put the coupling paste between the sensor and the container, otherwise DDS20-LB won't detect the liquid level.
150 150  )))
151 151  
152 152  (((
153 -After paste the LDS12-LB well, power on LDS12-LB. In the first 30 seconds of booting, device will check the sensors status and BLUE LED will show the status as below. After 30 seconds, BLUE LED will be off to save battery life.
141 +After paste the DDS20-LB well, power on DDS20-LB. In the first 30 seconds of booting, device will check the sensors status and BLUE LED will show the status as below. After 30 seconds, BLUE LED will be off to save battery life.
154 154  )))
155 155  
156 156  
... ... @@ -170,7 +170,7 @@
170 170  )))
171 171  
172 172  (((
173 -LDS12-LB will enter into low power mode at 30 seconds after system reset or power on, Blue LED will be off after that.
161 +LDDS20 will enter into low power mode at 30 seconds after system reset or power on, Blue LED will be off after that.
174 174  )))
175 175  
176 176  
... ... @@ -192,7 +192,7 @@
192 192  )))
193 193  
194 194  (((
195 -Reset LDS12-LB and see if the BLUE LED is slowly blinking.
183 +Reset DDS20-LB and see if the BLUE LED is slowly blinking.
196 196  )))
197 197  
198 198  [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS20%20-%20LoRaWAN%20Liquid%20Level%20Sensor%20User%20Manual/WebHome/image-20220615091045-8.png?width=341&height=203&rev=1.1||alt="image-20220615091045-8.png"]] [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS20%20-%20LoRaWAN%20Liquid%20Level%20Sensor%20User%20Manual/WebHome/image-20220615091045-9.png?width=284&height=200&rev=1.1||alt="image-20220615091045-9.png"]]
... ... @@ -216,6 +216,7 @@
216 216  
217 217  * Smart liquefied gas solution
218 218  
207 +
219 219  == 1.7 Precautions ==
220 220  
221 221  
... ... @@ -254,10 +254,11 @@
254 254  )))
255 255  |(% style="width:167px" %)Fast press ACT 5 times.|(% style="width:117px" %)Deactivate Device|(% style="width:225px" %)(% style="color:red" %)**Red led**(%%) will solid on for 5 seconds. Means device is in Deep Sleep Mode.
256 256  
246 +
257 257  == 1.10 BLE connection ==
258 258  
259 259  
260 -LDS12-LB support BLE remote configure.
250 +DDS20-LB support BLE remote configure.
261 261  
262 262  BLE can be used to configure the parameter of sensor or see the console output from sensor. BLE will be only activate on below case:
263 263  
... ... @@ -287,17 +287,18 @@
287 287  
288 288  (% style="color:blue" %)**Probe Mechanical:**
289 289  
280 +[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS20%20-%20LoRaWAN%20Liquid%20Level%20Sensor%20User%20Manual/WebHome/image-20220615090910-1.png?rev=1.1||alt="image-20220615090910-1.png"]]
290 290  
291 291  
292 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LLDS12-LoRaWAN%20LiDAR%20ToF%20Distance%20Sensor%20User%20Manual/WebHome/1654827224480-952.png?rev=1.1||alt="1654827224480-952.png"]]
283 +[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS20%20-%20LoRaWAN%20Liquid%20Level%20Sensor%20User%20Manual/WebHome/image-20220615090910-2.png?rev=1.1||alt="image-20220615090910-2.png"]]
293 293  
294 294  
295 -= 2. Configure LDS12-LB to connect to LoRaWAN network =
286 += 2. Configure DDS20-LB to connect to LoRaWAN network =
296 296  
297 297  == 2.1 How it works ==
298 298  
299 299  
300 -The LDS12-LB is configured as (% style="color:#037691" %)**LoRaWAN OTAA Class A**(%%) mode by default. It has OTAA keys to join LoRaWAN network. To connect a local LoRaWAN network, you need to input the OTAA keys in the LoRaWAN IoT server and press the button to activate the LDS12-LB. It will automatically join the network via OTAA and start to send the sensor value. The default uplink interval is 20 minutes.
291 +The DDS20-LB is configured as (% style="color:#037691" %)**LoRaWAN OTAA Class A**(%%) mode by default. It has OTAA keys to join LoRaWAN network. To connect a local LoRaWAN network, you need to input the OTAA keys in the LoRaWAN IoT server and press the button to activate the DDS20-LB. It will automatically join the network via OTAA and start to send the sensor value. The default uplink interval is 20 minutes.
301 301  
302 302  (% style="display:none" %) (%%)
303 303  
... ... @@ -308,12 +308,12 @@
308 308  
309 309  The LPS8v2 is already set to connected to [[TTN network >>url:https://console.cloud.thethings.network/]], so what we need to now is configure the TTN server.
310 310  
311 -[[image:image-20230614162359-3.png||height="468" width="800"]](% style="display:none" %)
302 +[[image:image-20230613140140-4.png||height="453" width="800"]](% style="display:none" %)
312 312  
313 313  
314 -(% style="color:blue" %)**Step 1:**(%%) Create a device in TTN with the OTAA keys from LDS12-LB.
305 +(% style="color:blue" %)**Step 1:**(%%) Create a device in TTN with the OTAA keys from DDS20-LB.
315 315  
316 -Each LDS12-LB is shipped with a sticker with the default device EUI as below:
307 +Each DDS20-LB is shipped with a sticker with the default device EUI as below:
317 317  
318 318  [[image:image-20230426084152-1.png||alt="图片-20230426084152-1.png" height="233" width="502"]]
319 319  
... ... @@ -342,10 +342,10 @@
342 342  [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/image-20220611161308-6.png?width=744&height=485&rev=1.1||alt="图片-20220611161308-6.png"]]
343 343  
344 344  
345 -(% style="color:blue" %)**Step 2:**(%%) Activate on LDS12-LB
336 +(% style="color:blue" %)**Step 2:**(%%) Activate on DDS20-LB
346 346  
347 347  
348 -Press the button for 5 seconds to activate the LDS12-LB.
339 +Press the button for 5 seconds to activate the DDS20-LB.
349 349  
350 350  (% style="color:green" %)**Green led**(%%) will fast blink 5 times, device will enter (% style="color:blue" %)**OTA mode**(%%) for 3 seconds. And then start to JOIN LoRaWAN network. (% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.
351 351  
... ... @@ -356,7 +356,7 @@
356 356  
357 357  
358 358  (((
359 -LDS12-LB will uplink payload via LoRaWAN with below payload format: 
350 +DDS20-LB will uplink payload via LoRaWAN with below payload format: 
360 360  )))
361 361  
362 362  (((
... ... @@ -380,7 +380,7 @@
380 380  === 2.3.1  Battery Info ===
381 381  
382 382  
383 -Check the battery voltage for LDS12-LB.
374 +Check the battery voltage for DDS20-LB.
384 384  
385 385  Ex1: 0x0B45 = 2885mV
386 386  
... ... @@ -404,6 +404,7 @@
404 404  
405 405  * If the sensor value lower than 0x0014 (20mm), the sensor value will be invalid.
406 406  
398 +
407 407  === 2.3.3  Interrupt Pin ===
408 408  
409 409  
... ... @@ -450,7 +450,7 @@
450 450  The payload decoder function for TTN V3 is here:
451 451  
452 452  (((
453 -LDS12-LB TTN V3 Payload Decoder:  [[ttps:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
445 +DDS20-LB TTN V3 Payload Decoder:  [[ttps:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
454 454  )))
455 455  
456 456  
... ... @@ -457,7 +457,7 @@
457 457  == 2.4  Uplink Interval ==
458 458  
459 459  
460 -The LDS12-LB by default uplink the sensor data every 20 minutes. User can change this interval by AT Command or LoRaWAN Downlink Command. See this link: [[Change Uplink Interval>>||anchor="H3.3.1SetTransmitIntervalTime"]]
452 +The DDS20-LB by default uplink the sensor data every 20 minutes. User can change this interval by AT Command or LoRaWAN Downlink Command. See this link: [[Change Uplink Interval>>||anchor="H3.3.1SetTransmitIntervalTime"]]
461 461  
462 462  
463 463  == 2.5  ​Show Data in DataCake IoT Server ==
... ... @@ -485,7 +485,7 @@
485 485  
486 486  (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
487 487  
488 -(% style="color:blue" %)**Step 4**(%%)**: Search the LDS12-LB and add DevEUI.**
480 +(% style="color:blue" %)**Step 4**(%%)**: Search the DDS20-LB and add DevEUI.**
489 489  
490 490  [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654851029373-510.png?rev=1.1||alt="1654851029373-510.png"]]
491 491  
... ... @@ -498,19 +498,19 @@
498 498  == 2.6 Datalog Feature ==
499 499  
500 500  
501 -Datalog Feature is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, LDS12-LB will store the reading for future retrieving purposes.
493 +Datalog Feature is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, DDS20-LB will store the reading for future retrieving purposes.
502 502  
503 503  
504 504  === 2.6.1 Ways to get datalog via LoRaWAN ===
505 505  
506 506  
507 -Set PNACKMD=1, LDS12-LB will wait for ACK for every uplink, when there is no LoRaWAN network,LDS12-LB will mark these records with non-ack messages and store the sensor data, and it will send all messages (10s interval) after the network recovery.
499 +Set PNACKMD=1, DDS20-LB will wait for ACK for every uplink, when there is no LoRaWAN network,DDS20-LB will mark these records with non-ack messages and store the sensor data, and it will send all messages (10s interval) after the network recovery.
508 508  
509 509  * (((
510 -a) LDS12-LB will do an ACK check for data records sending to make sure every data arrive server.
502 +a) DDS20-LB will do an ACK check for data records sending to make sure every data arrive server.
511 511  )))
512 512  * (((
513 -b) LDS12-LB will send data in **CONFIRMED Mode** when PNACKMD=1, but LDS12-LB won't re-transmit the packet if it doesn't get ACK, it will just mark it as a NONE-ACK message. In a future uplink if LDS12-LB gets a ACK, LDS12-LB will consider there is a network connection and resend all NONE-ACK messages.
505 +b) DDS20-LB will send data in **CONFIRMED Mode** when PNACKMD=1, but DDS20-LB won't re-transmit the packet if it doesn't get ACK, it will just mark it as a NONE-ACK message. In a future uplink if DDS20-LB gets a ACK, DDS20-LB will consider there is a network connection and resend all NONE-ACK messages.
514 514  )))
515 515  
516 516  Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
... ... @@ -521,7 +521,7 @@
521 521  === 2.6.2 Unix TimeStamp ===
522 522  
523 523  
524 -LDS12-LB uses Unix TimeStamp format based on
516 +DDS20-LB uses Unix TimeStamp format based on
525 525  
526 526  [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/WebHome/image-20220523001219-11.png?width=627&height=97&rev=1.1||alt="图片-20220523001219-11.png" height="97" width="627"]]
527 527  
... ... @@ -540,7 +540,7 @@
540 540  
541 541  User need to set (% style="color:blue" %)**SYNCMOD=1**(%%) to enable sync time via MAC command.
542 542  
543 -Once LDS12-LB Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to LDS12-LB. If LDS12-LB fails to get the time from the server, LDS12-LB will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).
535 +Once DDS20-LB Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to DDS20-LB. If DDS20-LB fails to get the time from the server, DDS20-LB will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).
544 544  
545 545  (% style="color:red" %)**Note: LoRaWAN Server need to support LoRaWAN v1.0.3(MAC v1.0.3) or higher to support this MAC command feature, Chirpstack,TTN V3 v3 and loriot support but TTN V3 v2 doesn't support. If server doesn't support this command, it will through away uplink packet with this command, so user will lose the packet with time request for TTN V3 v2 if SYNCMOD=1.**
546 546  
... ... @@ -568,7 +568,7 @@
568 568  )))
569 569  
570 570  (((
571 -Uplink Internal =5s，means LDS12-LB will send one packet every 5s. range 5~~255s.
563 +Uplink Internal =5s，means DDS20-LB will send one packet every 5s. range 5~~255s.
572 572  )))
573 573  
574 574  
... ... @@ -575,17 +575,17 @@
575 575  == 2.7 Frequency Plans ==
576 576  
577 577  
578 -The LDS12-LB uses OTAA mode and below frequency plans by default. If user want to use it with different frequency plan, please refer the AT command sets.
570 +The DDS20-LB uses OTAA mode and below frequency plans by default. If user want to use it with different frequency plan, please refer the AT command sets.
579 579  
580 580  [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/]]
581 581  
582 582  
583 -= 3. Configure LDS12-LB =
575 += 3. Configure DDS20-LB =
584 584  
585 585  == 3.1 Configure Methods ==
586 586  
587 587  
588 -LDS12-LB supports below configure method:
580 +DDS20-LB supports below configure method:
589 589  
590 590  * AT Command via Bluetooth Connection (**Recommended**): [[BLE Configure Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].
591 591  
... ... @@ -593,6 +593,7 @@
593 593  
594 594  * LoRaWAN Downlink.  Instruction for different platforms: See [[IoT LoRaWAN Server>>http://wiki.dragino.com/xwiki/bin/view/Main/]] section.
595 595  
588 +
596 596  == 3.2 General Commands ==
597 597  
598 598  
... ... @@ -607,10 +607,10 @@
607 607  [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/]]
608 608  
609 609  
610 -== 3.3 Commands special design for LDS12-LB ==
603 +== 3.3 Commands special design for DDS20-LB ==
611 611  
612 612  
613 -These commands only valid for LDS12-LB, as below:
606 +These commands only valid for DDS20-LB, as below:
614 614  
615 615  
616 616  === 3.3.1 Set Transmit Interval Time ===
... ... @@ -692,10 +692,11 @@
692 692  
693 693  * Example 2: Downlink Payload: 06000003  ~/~/  Set the interrupt mode to rising edge trigger
694 694  
688 +
695 695  = 4. Battery & Power Consumption =
696 696  
697 697  
698 -LDS12-LB use ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
692 +DDS20-LB use ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
699 699  
700 700  [[**Battery Info & Power Consumption Analyze**>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
701 701  
... ... @@ -704,7 +704,7 @@
704 704  
705 705  
706 706  (% class="wikigeneratedid" %)
707 -User can change firmware LDS12-LB to:
701 +User can change firmware DDS20-LB to:
708 708  
709 709  * Change Frequency band/ region.
710 710  
... ... @@ -720,40 +720,42 @@
720 720  
721 721  * Update through UART TTL interface: **[[Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H1.LoRaSTv4baseHardware]]**.
722 722  
717 +
723 723  = 6. FAQ =
724 724  
725 -== 6.1 What is the frequency plan for LDS12-LB? ==
720 +== 6.1  What is the frequency plan for DDS20-LB? ==
726 726  
727 727  
728 -LDS12-LB use the same frequency as other Dragino products. User can see the detail from this link:  [[Introduction>>doc:Main.End Device Frequency Band.WebHome||anchor="H1.Introduction"]]
723 +DDS20-LB use the same frequency as other Dragino products. User can see the detail from this link:  [[Introduction>>doc:Main.End Device Frequency Band.WebHome||anchor="H1.Introduction"]]
729 729  
730 730  
731 -= 7. Trouble Shooting =
726 +== 6.2  Can I use DDS20-LB in condensation environment? ==
732 732  
733 -== 7.1 AT Command input doesn't work ==
734 734  
729 +DDS20-LB is not suitable to be used in condensation environment. Condensation on the DDS20-LB probe will affect the reading and always got 0.
735 735  
736 -In the case if user can see the console output but can't type input to the device. Please check if you already include the (% style="color:blue" %)**ENTER**(%%) while sending out the command. Some serial tool doesn't send (% style="color:blue" %)**ENTER**(%%) while press the send key, user need to add ENTER in their string.
737 737  
732 += 7.  Trouble Shooting =
738 738  
739 -== 7.2 Significant error between the output distant value of LiDAR and actual distance ==
734 +== 7.1  Why I can't join TTN V3 in US915 / AU915 bands? ==
740 740  
741 741  
742 -(((
743 -(% style="color:blue" %)**Cause ①**(%%)**：**Due to the physical principles of The LiDAR probe, the above phenomenon is likely to occur if the detection object is the material with high reflectivity (such as mirror, smooth floor tile, etc.) or transparent substance (such as glass and water, etc.)
744 -)))
737 +It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
745 745  
746 -(((
747 -Troubleshooting: Please avoid use of this product under such circumstance in practice.
748 -)))
749 749  
740 +== 7.2  AT Command input doesn't work ==
750 750  
751 -(((
752 -(% style="color:blue" %)**Cause ②**(%%)**: **The IR-pass filters are blocked.
753 -)))
754 754  
743 +In the case if user can see the console output but can't type input to the device. Please check if you already include the (% style="color:blue" %)**ENTER**(%%) while sending out the command. Some serial tool doesn't send (% style="color:blue" %)**ENTER**(%%) while press the send key, user need to add ENTER in their string.
744 +
745 +
746 +== 7.3  Why i always see 0x0000 or 0 for the distance value? ==
747 +
748 +
755 755  (((
756 -Troubleshooting: please use dry dust-free cloth to gently remove the foreign matter.
750 +LDDS20 has a strict [[**installation requirement**>>||anchor="H1.5A0InstallDDS20-LB"]]. Please make sure the installation method exactly follows up with the installation requirement. Otherwise, the reading might be always 0x00.
751 +
752 +If you have followed the instruction requirement exactly but still see the 0x00 reading issue, please. please double-check the decoder, you can check the raw payload to verify.
757 757  )))
758 758  
759 759  
... ... @@ -760,7 +760,7 @@
760 760  = 8. Order Info =
761 761  
762 762  
763 -Part Number: (% style="color:blue" %)**LDS12-LB-XXX**
759 +Part Number: (% style="color:blue" %)**DDS20-LB-XXX**
764 764  
765 765  (% style="color:red" %)**XXX**(%%): **The default frequency band**
766 766  
... ... @@ -780,12 +780,13 @@
780 780  
781 781  * (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
782 782  
779 +
783 783  = 9. ​Packing Info =
784 784  
785 785  
786 786  (% style="color:#037691" %)**Package Includes**:
787 787  
788 -* LDS12-LB LoRaWAN LiDAR ToF Distance Sensor x 1
785 +* DDS20-LB LoRaWAN Ultrasonic Liquid Level Sensor x 1
789 789  
790 790  (% style="color:#037691" %)**Dimension and weight**:
791 791  
... ... @@ -797,6 +797,7 @@
797 797  
798 798  * Weight / pcs : g
799 799  
797 +
800 800  = 10. Support =
801 801  
802 802  
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