A float switch is a device used to sense the level of liquid 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 or what ever your project may be
Contains no mercury
Color: As the picture
Contract resistance(Max):100 OHM
Temperature rating:-30~+125 Celsius degree
Cable length: 400MM