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
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
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