Liquid level sensor can be used to detect the liquid level in the tank/container. Non-contact, works without direct contact with the liquid inside the tank. Tiny size, easy to install. Size: 30 x 19 x 10 mm / 1.18 inch x 0.75 inch x 0.39 inch Working voltage: DC5V or 12-24V Maximum output: 30mA Response time: 0.5 sec Working environment: 0 degrees Celsius to 60 degrees Celsius. Detection distance: 10 mm Application: Household electrical products, sanitary products, intelligent controls, drinking and cleaning and processing equipment, medical processing equipment and food machinery, chemical machinery equipment and so on. Connection and diagram: Black: GND />White: Output Red: VCC Material: Plastic Color: Black Package Included: 2 x Non-Contact Tank Level Sensor Switch 2 x Bracket (Just for one plane) Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the