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.
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.
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.
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 user easy to use.
DDS20-NB is powered by 8500mAh Li-SOCI2 battery, it is designed for long-term use up to several years.
DDS20-NB has optional built-in SIM card and default IoT server connection version. Which makes it works with simple configuration.
https://www.dragino.com/products/distance-level-sensor/item/299-dds20-nb.html
