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

The DDS20-LB 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-LB uses ultrasonic sensing technology for distance measurement. DDS20-LB 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.

The LoRa wireless technology used in DDS20-LB allows 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 whilst minimizing current consumption.

DDS20-LB supports BLE configure and wireless OTA update which make user easy to use.

DDS20-LB is powered by 8500mAh Li-SOCI2 battery, 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 power on.

**Features:

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 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

Specifications:

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

Documents:

DataSheet, Document Base User Manual -- Online Latest Shared Folder for all Dragino Products

Package Includes:

1 x DDS20-LB LoRaWAN Liquid Level Sensor x 1

Dimensions and Weight:

Device Size: 14.5 x 8 x 5 cm Device Weight: 190 g

Order Info:

Model: DDS20-LB-XX:

XX: the default frequency band

EU433: Default frequency band EU433 CN470: Default frequency band CN470 EU868: Default frequency band EU868 IN865: Default frequency band IN865 KR920: Default frequency band KR920 AS923: Default frequency band AS923 AU915: Default frequency band AU915 US915: Default frequency band US915

Shipping Notice

• We only support express shipping because of included battery
• Prices are exclusive of local taxes and import duties