DDS20-LS LoRaWAN Ultrasonic Distance Detection Sensor

The Dragino DDS20-LS is a solar-powered LoRaWAN® ultrasonic liquid level sensor designed for non-contact measurement of liquid levels in sealed containers. Mounted externally beneath tanks, it accurately measures liquid height without opening or contacting the liquid, making it ideal for toxic, corrosive, or high-pressure environments. With long-range LoRaWAN communication, BLE configuration, OTA firmware updates, and ultra-low power consumption, DDS20-LS is built for long-term outdoor deployments up to 5 years.

Key Features

• Non-contact ultrasonic liquid level measurement

• Valid measurement range: 20 mm – 2000 mm

• High accuracy: ±(5 mm + S × 0.5%)

• LoRaWAN® v1.0.3 Class A long-range communication

• Solar powered + 3000mAh Li-ion battery

• Bluetooth v5.1 configuration & wireless OTA firmware update

• Ultra-low power consumption

• IP66 waterproof enclosure

• AT commands & remote configuration via downlink

Specifications

• Measurement Technology: Ultrasonic (non-contact)

• Measurement Range: 20 – 2000 mm

• Accuracy: ±(5 mm + S × 0.5%)

• Supply Voltage: 2.5 – 3.6 V (built-in power system)

• Operating Temperature: –40 °C to +85 °C

• LoRa Frequency Bands:
  862–1020 MHz (HF), 410–528 MHz (LF)

• Max RF Output Power: +22 dBm

• RX Sensitivity: Down to –139 dBm

• Battery: Solar panel + 3000mAh Li-ion battery

• Sleep Current: 5 µA @ 3.3 V

• Transmit Current: 125 mA @ 20 dBm

• Enclosure Rating: IP66

• Device Size: 14.5 × 8 × 5 cm

• Device Weight: 190 g

USER MANUAL:

DDS20-LS_User_Manual

DATA SHEET:

DDS20-LS_Datasheet

FIRMWARE:

DDS20-LS_Firmware