This Liquid Water Level Sensor can be used to detect the liquid levle in tank/container.<br> Non-contact, works without direct contact with the liquid inside the tank.Tiny in size, easy to install.<br> Size:30*19*10mm/1.18"*0.75"*0.39"<br> Working voltage:DC5V or 12-24V<br> Maximum output:30mA<br> Responce time:0.5 Sec<br> Working environment:0Degrees Celsius to 60Degrees Celsius.<br> Sense distance:10mm<br> Application:Household appliances products, sanitary wares intelligent control products, drinking & cleaning water and water treatment equipments, treatment and foodstuff mechanism equipments, chemical mechanism equipments and so on.<br> Connection and Diagram:Black:GND<br> White:Output<br> Red:VCC<br> material:plastic<br> colour:black<br> Package included:1 x Non-contact Tank Liquid Water Level Sensor Switch<br> 1 x Bracket(just for flat surface)<br> Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.