This Liquid Water Level Sensor can be used to detect the liquid level in tank or container. Non-contact design, works without direct contact with the liquid inside the tank. Compact size, easy to install. Size: 30 x 19 x 10mm / 1.18" x 0.75" x 0.39". Working voltage: DC 5V or 12-24V. Maximum output: 30mA. Response time: 0.5 seconds. Operating environment: 0°C to 60°C. Sensing distance: 10mm. Application: Household appliances, sanitary ware intelligent control products, drinking & cleaning water and water treatment equipment, food processing machinery equipment, chemical machinery equipment and more. Connection: Black - GND, White - Output, Red - VCC. Material: Plastic. Color: Black. Package included: 1 x Non-contact Tank Liquid Water Level Sensor Switch, 1 x Bracket (suitable for flat surface only). Note: Lighting and different displays may cause slight color difference. The measurement allows an error of +/- 1-3cm.