Features Material: plastic Contains no mercury 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 etc. Note: Float used in conjunction with the relay can not be directly used with the power supply Features: Contract rating (Max): 10W Switching voltage (Max): 100V DC Switching current (Max): 0.5A Breakdown voltage (Max): 220V DC Carry current (Max): 1A Contract resistance (Max): 100O OHM Temperature rating: -30 ~ +125 Celsius degree Quantity: 1Pc Package: 1 x Water Level Sensor Package List