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Title
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1 -DDS20-NB -- NB-IoT Ultrasonic Liquid Level Sensor User Manual
1 +DDS45-NB -- NB-IoT Distance Detection Sensor User Manual
Content
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1 1  (% style="text-align:center" %)
2 -[[image:image-20230911134259-1.png||height="570" width="570"]]
2 +[[image:image-20230912085600-1.png||height="519" width="731"]]
3 3  
4 4  
5 +
6 +
7 +
8 +
9 +
10 +
11 +
5 5  **Table of Contents:**
6 6  
7 7  {{toc/}}
... ... @@ -13,36 +13,33 @@
13 13  
14 14  = 1. Introduction =
15 15  
16 -== 1.1 What is DDS20-NB NB-IoT Ultrasonic liquid level Sensor ==
23 +== 1.1 What is DDS45-NB NB-IoT Distance Detection Sensor ==
17 17  
18 18  
19 -The Dragino DDS20-NB is a **NB-IoT Ultrasonic liquid level sensor** for Internet of Things solution. It uses **none-contact method **to measure the **height of liquid** in a container without opening the container, and send IoT platform via NB-IoT network.
26 +The Dragino DDS45-NB is a (% style="color:blue" %)** NB-IoT Distance Detection Sensor**(%%) for Internet of Things solution. It is used to measure the distance between the sensor and a flat object. The distance detection sensor is a module that uses (% style="color:blue" %)** ultrasonic sensing technology**(%%) for distance measurement, and (% style="color:blue" %)** temperature compensation**(%%) is performed internally to improve the reliability of data. The DDS45-NB can be applied to scenarios such as horizontal distance measurement, liquid level measurement, parking management system, object proximity and presence detection, intelligent trash can management system, robot obstacle avoidance, automatic control, sewer, bottom water level monitoring, etc.
20 20  
21 -The DDS20-NB sensor is installed directly below the container to detect the height of the liquid level. User doesn't need to open a hole on the container to be tested. The none-contact measurement makes the measurement safety, easier and possible for some strict situation. 
28 +It detects the distance (% style="color:blue" %)** between the measured object and the sensor**(%%), and and send IoT platform via NB-IoT network.
22 22  
23 -DDS20-NB uses **ultrasonic sensing technology** for distance measurement. DDS20-NB is of high accuracy to measure various liquid such as: **toxic substances**, **strong acids**, **strong alkalis** and **various pure liquids** in high-temperature and high-pressure airtight containers.
30 +DDS45-NB supports different uplink methods including (% style="color:blue" %)**MQTT, MQTTs, UDP & TCP**(%%) for different application requirement, and support uplinks to various IoT Servers.
24 24  
25 -PS-NB-NA supports different uplink methods including **MQTT, MQTTs, UDP & TCP** for different application requirement, and support uplinks to various IoT Servers.
32 +DDS45-NB (% style="color:blue" %)**supports BLE configure **(%%)and(% style="color:blue" %)** OTA update**(%%) which make user easy to use.
26 26  
27 -PS-NB-NA **supports BLE configure **and** OTA update** which make user easy to use.
34 +DDS45-NB is powered by (% style="color:blue" %)**8500mAh Li-SOCI2 battery**(%%), it is designed for long-term use up to severa years.
28 28  
29 -PS-NB-NA is powered by **8500mAh Li-SOCI2 battery**, it is designed for long-term use up to severa years.
36 +DDS45-NB has optional built-in SIM card and default IoT server connection version. Which makes it works with simple configuration.
30 30  
31 -PS-NB-NA has optional built-in SIM card and default IoT server connection version. Which makes it works with simple configuration.
38 +[[image:image-20230912102813-2.png||height="320" width="923"]]
32 32  
33 33  
34 -[[image:image-20230911140426-2.png||height="320" width="951"]]
35 -
36 -
37 37  == 1.2 ​Features ==
38 38  
39 39  
40 40  * NB-IoT Bands: B1/B2/B3/B4/B5/B8/B12/B13/B17/B18/B19/B20/B25/B28/B66/B70/B85 @H-FDD
41 41  * Ultra-low power consumption
42 -* Liquid Level Measurement by Ultrasonic technology
43 -* Measure through container, No need to contact Liquid
44 -* Valid level range 20mm - 2000mm
45 -* Accuracy: ±(5mm+S*0.5%) (S: Measure Value)
46 +* Distance Detection by Ultrasonic technology
47 +* Flat object range 30mm - 4500mm
48 +* Accuracy: ±(1cm+S*0.3%) (S: Distance)
49 +* Measure Angle: 60°
46 46  * Multiply Sampling and one uplink
47 47  * Support Bluetooth v5.1 remote configure and update firmware
48 48  * Uplink on periodically
... ... @@ -192,7 +192,7 @@
192 192  Reset DDS20-NB and see if the BLUE LED is slowly blinking.
193 193  )))
194 194  
195 -[[image:image-20230809172509-1.png]]
199 +[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/DDS20-LB_LoRaWAN_Ultrasonic_Liquid_Level_Sensor_User_Manual/WebHome/image-20230809172509-1.png?rev=1.1||alt="image-20230809172509-1.png"]]
196 196  
197 197  (((
198 198  (% style="color:red" %)**Note :**(% style="color:red; display:none" %)** **
... ... @@ -295,23 +295,40 @@
295 295  (% style="display:none" %)
296 296  
297 297  
298 -= 2. Use S31-NB to communicate with IoT Server =
302 +== 1.12 Mechanical ==
299 299  
304 +
305 +[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual/WebHome/1675143884058-338.png?rev=1.1||alt="1675143884058-338.png"]]
306 +
307 +[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual/WebHome/1675143899218-599.png?rev=1.1||alt="1675143899218-599.png"]]
308 +
309 +[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual/WebHome/1675143909447-639.png?rev=1.1||alt="1675143909447-639.png"]]
310 +
311 +
312 +(% style="color:blue" %)**Probe Mechanical:**
313 +
314 +[[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"]]
315 +
316 +[[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"]]
317 +
318 +
319 += 2. Use DDS20-NB to communicate with IoT Server =
320 +
300 300  == 2.1 Send data to IoT server via NB-IoT network ==
301 301  
302 302  
303 -The S31-NB is equipped with a NB-IoT module, the pre-loaded firmware in S31-NB will get environment data from sensors and send the value to local NB-IoT network via the NB-IoT module.  The NB-IoT network will forward this value to IoT server via the protocol defined by S31-NB.
324 +The DDS20-NB is equipped with a NB-IoT module, the pre-loaded firmware in DDS20-NB will get environment data from sensors and send the value to local NB-IoT network via the NB-IoT module.  The NB-IoT network will forward this value to IoT server via the protocol defined by DDS20-NB.
304 304  
305 305  
306 306  Below shows the network structure:
307 307  
308 -[[image:1692415924540-357.png]]
329 +[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/DDS45-NB_NB-IoT_Distance_Detection_Sensor_User_Manual/WebHome/image-20230912102813-2.png?width=923&height=320&rev=1.1||alt="image-20230912102813-2.png"]]
309 309  
310 310  
311 -There are two version: (% style="color:blue" %)**-GE**(%%) and (% style="color:blue" %)**-1D**(%%) version of S31-NB.
332 +There are two version: (% style="color:blue" %)**-GE**(%%) and (% style="color:blue" %)**-1D**(%%) version of DDS45-NB.
312 312  
313 313  
314 -(% style="color:blue" %)**GE Version**(%%): This version doesn't include SIM card or point to any IoT server. User needs to use AT Commands to configure below two steps to set S31-NB send data to IoT server.
335 +(% style="color:blue" %)**GE Version**(%%): This version doesn't include SIM card or point to any IoT server. User needs to use AT Commands to configure below two steps to set DDS20-NB send data to IoT server.
315 315  
316 316  * Install NB-IoT SIM card and configure APN. See instruction of [[Attach Network>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H2.AttachNetwork]].
317 317  
... ... @@ -341,13 +341,13 @@
341 341  [[image:image-20230819113244-11.png||height="141" width="367"]]
342 342  )))|(% style="width:170px" %)
343 343  
344 -(% style="color:blue" %)**1D Version**(%%): This version has 1NCE SIM card pre-installed and configure to send value to DataCake. User Just need to select the sensor type in DataCake and Activate S31-NB and user will be able to see data in DataCake. See here for [[DataCake Config Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.4Datacake]].
365 +(% style="color:blue" %)**1D Version**(%%): This version has 1NCE SIM card pre-installed and configure to send value to DataCake. User Just need to select the sensor type in DataCake and Activate DDS20-NB and user will be able to see data in DataCake. See here for [[DataCake Config Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.4Datacake]].
345 345  
346 346  
347 347  == 2.2 ​Payload Types ==
348 348  
349 349  
350 -To meet different server requirement, S31-NB supports different payload type.
371 +To meet different server requirement, DDS20-NB supports different payload type.
351 351  
352 352  **Includes:**
353 353  
... ... @@ -373,7 +373,7 @@
373 373  
374 374  This is the General Json Format. As below:
375 375  
376 -(% style="color:#4472c4" %)**{"IMEI":866207053462762,"temperature":29.2,"humidity":54.2,"battery":3.27,"signal":24,"Model":S31x-NB, "1":{28.2,48.3,2023/08/10 08:00:37},"2":{28.1,49.1,2023/08/10 07:57:37},"3":{28.1,48.5,2023/08/10 07:54:37},"4":{28.2,48.6,2023/08/10 07:51:37},"5":{28.1,48.9,2023/08/10 07:48:37},"6":{28.2,48.8,2023/08/10 07:45:37},"7":{28.2,48.8,2023/08/10 07:42:37},"8":{28.0,48.8,2023/08/10 07:39:37}}**
397 +(% style="color:#4472c4" %)**{"IMEI":866207053462762,"temperature":29.2,"humidity":54.2,"battery":3.27,"signal":24,"Model":DDS20-NB, "1":{28.2,48.3,2023/08/10 08:00:37},"2":{28.1,49.1,2023/08/10 07:57:37},"3":{28.1,48.5,2023/08/10 07:54:37},"4":{28.2,48.6,2023/08/10 07:51:37},"5":{28.1,48.9,2023/08/10 07:48:37},"6":{28.2,48.8,2023/08/10 07:45:37},"7":{28.2,48.8,2023/08/10 07:42:37},"8":{28.0,48.8,2023/08/10 07:39:37}}**
377 377  
378 378  
379 379  (% style="color:red" %)**Notice, from above payload:**
... ... @@ -396,7 +396,7 @@
396 396  
397 397  These bytes include the hardware and software version.
398 398  
399 -(% style="color:#037691" %)**Higher byte:**(%%) Specify Sensor Model: 0x00 for S31B-NB & S31-NB
420 +(% style="color:#037691" %)**Higher byte:**(%%) Specify Sensor Model: 0x00 for DDS20-NB
400 400  
401 401  (% style="color:#037691" %)**Lower byte:**(%%) Specify the software version: 0x64=100, means firmware version 100
402 402  
... ... @@ -423,20 +423,6 @@
423 423  **99**    Not known or not detectable
424 424  
425 425  
426 -(% style="color:blue" %)**Temperature: **
427 -
428 -If payload is: 0105H:  (0105 & 8000 == 0), temp = 0105H /10 = 26.1 degree
429 -
430 -If payload is: FF3FH :  (FF3F & 8000 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
431 -
432 -(FF3F & 8000: Judge whether the highest bit is 1, when the highest bit is 1, it is negative)
433 -
434 -
435 -(% style="color:blue" %)**Humidity:   **
436 -
437 -Read:0295(H)=661(D)    Value:  661 / 10=66.1, So 66.1%
438 -
439 -
440 440  (% style="color:blue" %)**TimeStamp:   **
441 441  
442 442  Unit TimeStamp Example: 64d49439(H) = 1691653177(D)
... ... @@ -464,60 +464,123 @@
464 464  (% style="color:#4472c4" %)**field1=27.9&field2=49.9&field3=3.23&field4=28**
465 465  
466 466  
467 -== 2.3 Test Uplink and Change Update Interval ==
474 +== 2.3  ​Uplink Payload ==
468 468  
469 469  
470 -By default, Sensor will send uplinks (% style="color:blue" %)**every 2 hours**(%%) & AT+NOUD=8
477 +(((
478 +DDS20-NB will uplink payload via LoRaWAN with below payload format: 
479 +)))
471 471  
472 -User can use below commands to change the (% style="color:blue" %)**uplink interval**.
481 +(((
482 +Uplink payload includes in total 8 bytes.
483 +)))
473 473  
474 -(% style="color:#037691" %)**AT+TDC=600 ** (%%) ~/~/ Set Update Interval to 600s
485 +(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
486 +|=(% style="width: 95px; background-color:#4F81BD;color:white" %)Size(bytes)|=(% style="width: 61px; background-color:#4F81BD;color:white" %)2|=(% style="background-color:#4F81BD;color:white" %)2|=(% style="background-color:#4F81BD;color:white" %)1|=(% style="background-color:#4F81BD;color:white" %)2|=(% style="background-color:#4F81BD;color:white" %)1
487 +|(% style="width:95px" %)Value|(% style="width:61px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
488 +[[Distance>>||anchor="H2.3.2A0Distance"]]
489 +(unit: mm)
490 +)))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
491 +[[Temperature (Optional)>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
492 +)))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
475 475  
476 -User can also push the button for more than 1 seconds to activate an uplink.
494 +[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/DDS20-LB_LoRaWAN_Ultrasonic_Liquid_Level_Sensor_User_Manual/WebHome/%E5%BE%AE%E4%BF%A1%E6%88%AA%E5%9B%BE_20230702135733.png?width=964&height=215&rev=1.1||alt="微信截图_20230702135733.png"]]
477 477  
478 478  
479 -== 2.4 Multi-Samplings and One uplink ==
497 +=== 2.3.1  Battery Info ===
480 480  
481 481  
482 -To save battery life, S31-NB will sample temperature & humidity data every 15 minutes and send one uplink every 2 hours. So each uplink it will include 8 stored data + 1 real-time data. They are defined by:
500 +Check the battery voltage for DDS20-NB.
483 483  
484 -* (% style="color:#037691" %)**AT+TR=900**   (%%) ~/~/ The unit is seconds, and the default is to record data once every 900 seconds (15 minutes, the minimum can be set to 180 seconds)
502 +Ex1: 0x0B45 = 2885mV
485 485  
486 -* (% style="color:#037691" %)**AT+NOUD=8**     (%%)~/~/  The device uploads 8 sets of recorded data by default. Up to 32 sets of record data can be uploaded.
504 +Ex2: 0x0B49 = 2889mV
487 487  
488 -The diagram below explains the relationship between TR, NOUD, and TDC more clearly:
489 489  
490 -[[image:1692424376354-959.png]]
507 +=== 2.3.2  Distance ===
491 491  
492 492  
493 -== 2.5 Humidity and Temperature alarm function ==
510 +(((
511 +Get the distance. Flat object range 20mm - 2000mm.
512 +)))
494 494  
514 +(((
515 +For example, if the data you get from the register is **0x06 0x05**, the distance between the sensor and the measured object is(% style="color:#4472c4" %)** **
495 495  
496 -On each sampling define by AT+TR ( default 900s or 15 minutes), when the value exceed the range, it will trigger an Alarm and immediately sends a uplink.
517 +(% style="color:blue" %)**0605(H) = 1541 (D) = 1541 mm.**
518 +)))
497 497  
520 +* If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
498 498  
499 -(% style="color:blue" %)**AT Commands:**
522 +* If the sensor value lower than 0x0014 (20mm), the sensor value will be invalid.
500 500  
501 -(% style="color:#037691" %)**AT+ SHHUM=min,max**
524 +=== 2.3.3  Interrupt Pin ===
502 502  
503 -Example: AT+ SHHUM=50,80  ~/~/ Alarm when humidity lower than 50 or higher than 80.
504 504  
527 +This data field shows if this packet is generated by interrupt or not.
505 505  
506 -(% style="color:#037691" %)**AT+ SHTEMP=min,max**
529 +**Example:**
507 507  
508 -Example: AT+ SHTEMP=20,30  ~/~/ Alarm when temperature lower than 20 or higher than 30
531 +0x00: Normal uplink packet.
509 509  
533 +0x01: Interrupt Uplink Packet.
510 510  
511 -(% style="color:red" %)**Notice:**
512 512  
513 -* To disable Alarm, user can set min and max to same value , such as (% style="color:#037691" %)**AT+SHTEMP=0,0.**
536 +=== 2.3.4  DS18B20 Temperature sensor ===
514 514  
515 -* If user only want to send only min or max, user can set the alarm to a value that device won’t reach. For example: (% style="color:#037691" %)**AT+SHTEMP=-80,0.**
516 516  
539 +This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
540 +
541 +**Example**:
542 +
543 +If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
544 +
545 +If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
546 +
547 +
548 +=== 2.3.5  Sensor Flag ===
549 +
550 +
551 +(((
552 +0x01: Detect Ultrasonic Sensor
553 +)))
554 +
555 +(((
556 +0x00: No Ultrasonic Sensor
557 +
558 +
559 +)))
560 +
561 +== 2.4 Test Uplink and Change Update Interval ==
562 +
563 +
564 +By default, Sensor will send uplinks (% style="color:blue" %)**every 2 hours**(%%) & AT+NOUD=8
565 +
566 +User can use below commands to change the (% style="color:blue" %)**uplink interval**.
567 +
568 +(% style="color:#037691" %)**AT+TDC=600 ** (%%) ~/~/ Set Update Interval to 600s
569 +
570 +User can also push the button for more than 1 seconds to activate an uplink.
571 +
572 +
573 +== 2.5 Multi-Samplings and One uplink ==
574 +
575 +
576 +To save battery life, DDS20-NB will sample temperature & humidity data every 15 minutes and send one uplink every 2 hours. So each uplink it will include 8 stored data + 1 real-time data. They are defined by:
577 +
578 +* (% style="color:#037691" %)**AT+TR=900**   (%%) ~/~/ The unit is seconds, and the default is to record data once every 900 seconds (15 minutes, the minimum can be set to 180 seconds)
579 +
580 +* (% style="color:#037691" %)**AT+NOUD=8**     (%%)~/~/  The device uploads 8 sets of recorded data by default. Up to 32 sets of record data can be uploaded.
581 +
582 +The diagram below explains the relationship between TR, NOUD, and TDC more clearly:
583 +
584 +[[image:1692424376354-959.png]]
585 +
586 +
517 517  == 2.6 Trggier an uplink by external interrupt ==
518 518  
519 519  
520 -S31-NB has an external trigger interrupt function. Users can use the PB15 pin to trigger the upload of data packets.
590 +DDS20-NB has an external trigger interrupt function. Users can use the PB15 pin to trigger the upload of data packets.
521 521  
522 522  (% style="color:blue" %)**AT command:**
523 523  
... ... @@ -531,12 +531,12 @@
531 531  
532 532  * (% style="color:#037691" %)**AT+INTMOD=3  **(%%) ~/~/ Trigger by rising edge
533 533  
534 -= 3. Configure S31x-NB =
604 += 3. Configure DDS20-NB =
535 535  
536 536  == 3.1 Configure Methods ==
537 537  
538 538  
539 -S31x-NB supports below configure method:
609 +DDS20-NB supports below configure method:
540 540  
541 541  * AT Command via Bluetooth Connection (**Recommended**): [[BLE Configure Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].
542 542  
... ... @@ -625,7 +625,7 @@
625 625  = 4. Battery & Power Consumption =
626 626  
627 627  
628 -S31x-NB use ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
698 +DDS20-NB use ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
629 629  
630 630  [[**Battery Info & Power Consumption Analyze**>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
631 631  
... ... @@ -639,7 +639,7 @@
639 639  
640 640  * Fix bugs.
641 641  
642 -Firmware and changelog can be downloaded from : **[[Firmware download link>>https://www.dropbox.com/sh/fhb3uyl4gt6clru/AAAiZVTFcxrfE1JOOyfcgO9ha?dl=0]]**
712 +Firmware and changelog can be downloaded from : **[[Firmware download link>>https://www.dropbox.com/sh/nyzeu0lf0amcaek/AAC6UZrqyTcAyJgXOH7l9F9Ka?dl=0]]**
643 643  
644 644  Methods to Update Firmware:
645 645  
... ... @@ -657,11 +657,24 @@
657 657  [[See BC660K-GL AT Command set>>url:https://www.dropbox.com/sh/5f6ssda5fum8rvs/AABT68l8ZzWOvZ5eg2qwOoFda?dl=0]]
658 658  
659 659  
660 -= 7. Order Info =
730 += 7.  Trouble Shooting =
661 661  
732 +== 7.1  Why i always see 0x0000 or 0 for the distance value? ==
662 662  
663 -Part Number: (% style="color:blue" %)**S31-NB-XX  / S31B-NB-XX**
664 664  
735 +(((
736 +DDS20-NB has a strict [[**installation requirement**>>||anchor="H1.5A0InstallDDS20-NB"]]. Please make sure the installation method exactly follows up with the installation requirement. Otherwise, the reading might be always 0x00.
737 +
738 +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.
739 +
740 +
741 +)))
742 +
743 += 8. Order Info =
744 +
745 +
746 +Part Number: (% style="color:blue" %)**DDS20-NB-XX**
747 +
665 665  (% style="color:red" %)**XX**(%%):
666 666  
667 667  * (% style="color:#037691" %)**GE**(%%): General version ( Exclude SIM card)
... ... @@ -671,12 +671,12 @@
671 671  (% style="color:#037691" %)**1NCE SIM Card NB-IoT network coverage**(%%): Austria, Belgium, Bulgaria, Croatia, Czech Republic, Denmark, Finland, Germany, Great Britain, Greece, Hungary, Ireland, Italy, Latvia, Malta, Netherlands, Norway, Puerto Rico, Russia, Slovak , Republic, Slovenia, Spain, Sweden, Switzerland, Taiwan, USA, US Virgin Islands
672 672  
673 673  
674 -= 8. ​Packing Info =
757 += 9. ​Packing Info =
675 675  
676 676  
677 677  (% style="color:#037691" %)**Package Includes**:
678 678  
679 -* S31-NB or S31-NB NB-IoT Sensor Node x 1
762 +* DDS20-NB NB-IoT Ultrasonic liquid level sensor x 1
680 680  
681 681  * External antenna x 1
682 682  
... ... @@ -690,7 +690,7 @@
690 690  
691 691  * Weight / pcs : 180g
692 692  
693 -= 9. Support =
776 += 10. Support =
694 694  
695 695  
696 696  * Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
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