The Dragino DDS20-LB is a LoRaWAN 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 value via the LoRaWAN network to IoT Server.

The DDS20-LB 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-LB uses ultrasonic sensing technology for distance measurement. DDS20-LB is of high accuracy in measuring various liquid such as toxic substances, strong acids, strong alkalis, and various pure liquids in high-temperature and high-pressure airtight containers.The LoRa wireless technology used in DDS20-LB allows the device to send data and reach extremely long ranges at low data rates. It provides ultra-long-range spread spectrum communication and high interference immunity while minimizing current consumption.

DDS20-LB supports BLE configuration and wireless OTA update, which makes users easy to use.

An 8500mAh Li-SOCI2 battery powers DDS20-LB; it is designed for long-term use up to 5 years.

Each DDS20-LB is pre-load with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server, and it will auto-connect after powering on.

• LoRaWAN 1.0.3 Class A


• Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865


• 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)


• Cable Length: 25cm


• Support Bluetooth v5.1 and LoRaWAN remote configure


• Support wireless OTA update firmware


• AT Commands to change parameters


• Downlink to change configure


• IP66 Waterproof Enclosure


• 8500mAh Battery for long-term use

Applications:

• Smart liquid control solution


• Smart liquefied gas solution

Common DC Characteristics:

• Supply Voltage: built in 8500mAh Li-SOCI2 battery , 2.5v ~ 3.6v


• Operating Temperature: -40 ~ 85°C

LoRa Spec:

• Frequency Range,  Band 1 (HF): 862 ~ 1020 Mhz,Band 2 (LF): 410 ~ 528 Mhz


• Max +22 dBm constant RF output vs.


• RX sensitivity: down to -139 dBm.


• Excellent blocking immunity

Battery:

• 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:

• Sleep Mode: 5uA @ 3.3v


• LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm

Dragino DDS20-LB LoRaWAN Liquid Level Sensor

•  LoRaWAN Ultrasonic liquid level sensor


• US 915 MHz band


• Offers ultra-low power consumption


• Provides ultra-long range spread spectrum communication


• Uses ultrasonic sensing technology for distance measurement


• Pre-loads with a set of unique keys


• Powered by an 8500 mA Li-SOCI2 battery


• Change parameters by AT Commands


• Long-Term use


• CHOOVIO is the official distributor of Dragino products in the US