The Dragino LDDS20 is an advanced ultrasonic liquid level sensor designed for Internet of Things (IoT) applications. Thanks to the contactless measurement method, the liquid level in a container can be measured without opening it. The measured values are wirelessly transmitted via the LoRaWAN® network to an IoT server.
Installation and operation
The LDDS20 is mounted directly under the container and detects the liquid level without physical contact with the contents. This makes the sensor particularly suitable for applications where safety, hygiene, or the integrity of the container is essential—such as with toxic substances, strong acids, bases, or pure liquids in airtight, high-pressure containers.
Technology and performance
- Ultrasonic distance measurement: High accuracy in measuring various liquids
- LoRaWAN® communication: Ultra-long range with low data rates and minimal power consumption
- Robust housing: IP66 waterproof design for reliable operation in demanding environments
- Long lifespan: Powered by an 8500mAh Li-SOCI2 battery, designed for up to 10 years of use*
- Preconfigured keys: Ready for direct registration on LoRaWAN® networks
*The actual battery life depends on factors such as network coverage and transmission frequency.
🔍 Features:
- LoRaWAN® 1.0.3 Class A compatibel
- Ultra low power consumption
- Measurement range: 20 mm to 2000 mm
- Accuracy: ±(5mm+S*0.5%) (S: Measure Value)
- Cable Length : 25cm
- Supported frequency bands: CN470, EU433, KR920, US915, EU868, AS923, AU915, IN865
- AT commands for parameter settings
- Periodic uplinks and downlinks for configuration
- Applications: smart liquid management, monitoring of liquefied gas, industrial storage
