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DDS20-NB NB-IoT Ultrasonic liquid level sensor

  • $159.00
  • Save $20
  • (Exc. GST)

  • Available in stock

  • $ We Ship from our stock in AU (Perth) with pickup option, and Prices are Exc. GST
  • $ We Offer Quantity Discounts for Large Orders 10+ qty (Request for Quote)
  • $ We Accept Purchase Orders & Net 30 Payment for Eligible Accounts

    DDS20-NB NB-IoT Ultrasonic liquid level sensor

    The Dragino DDS20-NB is an NB-IoT Ultrasonic liquid level sensor for the Internet of Things solution. It uses a none-contact method to measure the height of liquid in a container without opening the container and send the IoT platform via the NB-IoT network.

    The DDS20-NB sensor is installed directly below the container to detect the height of the liquid level. The user doesn't need to open a hole in the container to be tested. The non-contact measurement makes the measurement safe, easier, and possible for some strict situations.  

    DDS20-NB uses ultrasonic sensing technology for distance measurement. DDS20-NB is of high accuracy to measure various liquids such as toxic substancesstrong acidsstrong alkalis, and various pure liquids in high-temperature and high-pressure airtight containers.

    DDS20-NB supports different uplink methods including MQTT, MQTTs, UDP & TCP for different application requirement, and support uplinks to various IoT Servers.

    DDS20-NB supports BLE configure and OTA update which make users easy to use.

    DDS20-NB is powered by an 8500mAh Li-SOCI2 battery, it is designed for long-term use for up to several years.

    DDS20-NB has optional built-in SIM card and default IoT server connection version. Which makes it work with a simple configuration.


    • NB-IoT Bands: B1/B2/B3/B4/B5/B8/B12/B13/B17/B18/B19/B20/B25/B28/B66/B70/B85 @H-FDD
    • Ultra-low power consumption
    • Liquid Level Measurement by Ultrasonic Technology
    • Measure through the container, No need to contact Liquid
    • Valid level range 20mm - 2000mm
    • Accuracy: ±(5mm+S*0.5%) (S: Measure Value)
    • Multiply Sampling and one uplink
    • Support Bluetooth v5.1 remote configure and update firmware
    • Uplink on periodically
    • Downlink to change configure
    • IP66 Waterproof Enclosure
    • 8500mAh Battery for long term use
    • Nano SIM card slot for NB-IoT SIM


    • Smart liquid control solution
    • Smart liquefied gas solution


    Common DC Characteristics:

    • Supply Voltage: 2.5v ~ 3.6v
    • Operating Temperature: -40 ~ 85°C

    NB-IoT Module: BC660K-GL 

    Support Bands: 

    • B1 @H-FDD: 2100MHz
    • B2 @H-FDD: 1900MHz
    • B3 @H-FDD: 1800MHz
    • B4 @H-FDD: 2100MHz
    • B5 @H-FDD: 860MHz
    • B8 @H-FDD: 900MHz
    • B12 @H-FDD: 720MHz
    • B13 @H-FDD: 740MHz
    • B17 @H-FDD: 730MHz
    • B18 @H-FDD: 870MHz
    • B19 @H-FDD: 870MHz
    • B20 @H-FDD: 790MHz
    • B25 @H-FDD: 1900MHz
    • B28 @H-FDD: 750MHz
    • B66 @H-FDD: 2000MHz
    • B70 @H-FDD: 2000MHz
    • B85 @H-FDD: 700MHz  


    • Li/SOCI2 un-chargeable battery
    • Capacity: 8500mAh
    • Self-Discharge: <1% / Year @ 25°C
    • Max continuously current: 130mA
    • Max boost current: 2A, 1 second

    Power Consumption: 

    • STOP Mode: 10uA @ 3.3v
    • Max transmit power: 350mA@3.3v



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