DRAGINO LDDS20-EU868
Overview
The Dragino NDDS20 is a LoRaWAN ultrasonic liquid level sensor for Internet of Things solutions. It uses the non-contact method to measure the height of the liquid in a container without opening the container and sends the value to the IoT server via the LoRaWAN network.
The NDDS20 sensor is installed directly under the container to determine the height of the liquid level. The user does not need to open a hole in the container to be tested. Non-contact measurement makes measurement safer, easier and possible for some strict situations.
The NDDS20 uses ultrasonic technology for distance measurement. NDDS20 is of high accuracy to measure various liquids such as: toxic substances, strong acids, strong alkalis and various pure liquids in airtight containers with high temperature and high pressure.
NarrowBand Internet of Things (NB-IoT) is a standards-based Low Power Wide Area (LPWA) technology designed to enable a wide range of new IoT devices and services. NB-IoT significantly improves user device power consumption, system capacity and spectrum efficiency, especially in deep coverage.
The NDDS20 supports various uplink methods such as TCP, MQTT, UDP and CoAP for different application needs.
The NDDS20 is powered by an 8500mAh Li-SOCI2 battery that is rated for long-term use of up to 5 years. (The actual battery life depends on the usage environment, update period and uplink method)
To use the NDDS20, the user needs to check whether there is NB-IoT coverage in their environment and which bands the NDDS20 supports. If the local operator supports it, the user needs to obtain an NB-IoT SIM card from the local operator and install the NDDS20 to get NB-IoT network connection.
FeaturesNB-IoT Non-contact level measurement Valid level range: 20mm - 2000mm Liquid level measurement by ultrasonic technology Ultra low power consumption NB bands: B1/B3/B8/B5/B20/B28 Uplink via MQTT, TCP, CoAP or UDP AT commands to change parameters Waterproof IP66 -Housing Uplink at regular intervals High capacity Li-SOCI2 battery (8500 mAh) ApplicationsIntelligent liquid control solution Package contents1 x NDDS20 LoRaWAN Liquid Level Sensor NOTE: Ultrasonic coupling paste and Eproxy AB glue are included in most shipping methods. Therefore, they are not included in the standard package and must be purchased locally by the user.