Products

what we do

DDS20-LB/LS -- LoRaWAN Ultrasonic liquid level sensor

The Dragino DDS20-LB/LS 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/LS 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/LS uses ultrasonic sensing technology for distance measurement. DDS20-LB/LS is of high accuracy to measure various liquid such as: toxic substancesstrong acidsstrong alkalis and various pure liquids in high-temperature and high-pressure airtight containers.

The LoRa wireless technology used in DDS20-LB/LS 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/LS supports BLE configure and wireless OTA update which make user easy to use.

DDS20-LB/LS is powered by 8500mAh Li-SOCI2 battery or solar powered + Li-ion battery , it is designed for long term use up to 5 years.

Each DDS20-LB/LS 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 Li/SOCl2 Battery (DDS20-LB)
  • Solar panel + 3000mAh Li-ion battery (DDS20-LS)

Applications: 

  • Smart liquid control solution
  • Smart liquefied gas solution

Specifications:

Common DC Characteristics:

  • Supply Voltage: Built-in 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

Package Includes:

  • 1 x DDS20-LB or DDS20-LS LoRaWAN Liquid Level Sensor x 1

Note:

Ultrasonic coupling paste and Eproxy AB glue are subjected in most shipping way. So the default package doesn’t include it and user needs to purchase locally.

Dimensions and Weight:

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

Part Number: DDS20-LB-XX or DDS20-LS-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
Last modified on 26 September 2024
Copyright ©2010-2023
Open IoT Solution Limited.
Shenzhen  Dragino technology development co.LTD
Dragino Technology Co., LTD.
All rights reserved