Description: Brand new Water Level Alarm Sensor Module Liquid Level Sensor Circuit Board This sensor module can estimate the water level through a series of exposed parallel conductor line marks measuring the water droplets and capacity Easily convert water to analog signal, the output analog signal can be read directly on the arduino board to achieve the effect of water level alarm The surface have gone through plating processing to enhance the electrical conductivity and corrosion resistance Simple circuit and easy to use and high cost performance Specifications: Color: Red Material: RF4 Power Supply: 3.3V or 5V Working Current: Less then 20mA Output Voltage: 0~2.3V (when sensor completely soaked in the water) Interface Definitions: 1: Foot signal, 2: Foot GND, 3: Foot positive power Service Life: 1 year approximately Sensor Type: Analog output Weight: 8.0g Packaging Dimensions: 120.0 x 78.0x 10.0mm Packing: Anti-static sealing bag