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Last modified by Mengting Qiu on 2023/12/14 11:15
From version 75.2
edited by Xiaoling
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To version 73.12
edited by Xiaoling
on 2023/06/13 12:00
Change comment: Update document after refactoring.

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Title
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1 -DDS20-LB -- LoRaWAN Ultrasonic Liquid Level Sensor User Manual
1 +DDS20-LB_LoRaWAN_Ultrasonic_Liquid_Level_Sensor_User_Manual
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1 1  (% style="text-align:center" %)
2 -[[image:image-20230613133716-2.png||height="717" width="717"]]
2 +[[image:image-20230613100900-1.png||height="650" width="650"]]
3 3  
4 4  
5 5  
6 -
7 -
8 -
9 -
10 -
11 11  **Table of Contents：**
12 12  
13 13  {{toc/}}
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56 56  * 8500mAh Battery for long term use
57 57  
58 58  
54 +
59 59  == 1.3 Specification ==
60 60  
61 61  
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85 85  * LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm
86 86  
87 87  
84 +
88 88  == 1.4 Rated environmental conditions ==
89 89  
90 90  
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140 140  * Bottom water level monitoring
141 141  
142 142  
140 +
143 143  == 1.7 Sleep mode and working mode ==
144 144  
145 145  
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168 168  |(% 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.
169 169  
170 170  
169 +
171 171  == 1.9 BLE connection ==
172 172  
173 173  
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317 317  * If the sensor value lower than 0x001E (30mm), the sensor value will be 0x00.
318 318  
319 319  
319 +
320 320  === 2.3.3  Interrupt Pin ===
321 321  
322 322  
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508 508  * LoRaWAN Downlink.  Instruction for different platforms: See [[IoT LoRaWAN Server>>http://wiki.dragino.com/xwiki/bin/view/Main/]] section.
509 509  
510 510  
511 +
511 511  == 3.2 General Commands ==
512 512  
513 513  
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571 571  )))
572 572  
573 573  
575 +
574 574  === 3.3.2 Set Interrupt Mode ===
575 575  
576 576  
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606 606  * Example 2: Downlink Payload: 06000003  ~/~/  Set the interrupt mode to rising edge trigger
607 607  
608 608  
611 +
609 609  = 4. Battery & Power Consumption =
610 610  
611 611  
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635 635  * 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]]**.
636 636  
637 637  
641 +
638 638  = 6. FAQ =
639 639  
640 640  == 6.1  What is the frequency plan for DDS45-LB? ==
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718 718  * (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
719 719  
720 720  
725 +
721 721  = 9. ​Packing Info =
722 722  
723 723  
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736 736  * Weight / pcs : g
737 737  
738 738  
744 +
739 739  = 10. Support =
740 740  
741 741  
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