Used to sense the level of within a tank, it may actuate a pump, an indicator, an alarm, or other device.Use them with hydroponics, saltwater tank, freshwater tank, gardening, aquariums for power head control, pet bowls, fish tanks, filtration, heating etc.The plastic float switch of side mount duckbilled is a frequently opened, often closed, switching contact and with the overall brake, it's installed from the outside and doesn't need to be sealed.I nstallation: It is installed horizontally drilling at the bottom or at the top. Specification: Contract rating (Max): 10W Switching voltage (Max): 100V DC Switching current (Max): 0.5A Breakdown voltage (Max): 220V DC Carry current (Max): 1AMax Contract resistance (Max): 100 T emperature rating: -10 ~ +85Celsius degree Switch forms：N.O /N.C（Open and close frequently) Material: plastic Size: 60cm/23.6inchT ail Diameter: 16mm/0.2inch Package Includes: 1 Piece Water Level Switch Note:Float used in conjunction with the relay can not be directly used with the power supply.Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.Float Water Level Switch; Water Level Sensor;Vertical Float Switch;Water Level Sensor Horizontal;Float Switch;220V