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
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
Applications:
Smart liquid control solution
Smart liquefied gas solution
Package Includes:
1 x LDDS20 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
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
Useful Link:
Datasheet
User Manual
LDDS20 v1.0 Power Analyze.pdf
