Features:_x000D_ _x000D_ Compact size, easy to be installed. _x000D_ Sense the liquid level within a tank to turn on/off a pump, an indicator , an alarm or other device. _x000D_ Can be installed as normally closed/open switch according to your needs. _x000D_ It can be used with hydroponics, saltwater tank, freshwater tank, gardening, aquariums for power head control, pet bowls, fish tanks, filtration, heating; but must make sure your project Contains no mercury before you use it! _x000D_ Switching voltage (Max): 100V DC; Switching current (Max): 0.5A. _x000D_ _x000D_ Specification:_x000D_ Material: Plastic _x000D_ Size: 8.7cm * 3cm _x000D_ Color: Black_x000D_ Cable length: 40cm / 15.76"_x000D_ Float length: 85 mm / 3.35"_x000D_ Switching voltage (Max): 100V DC_x000D_ Switching current (Max): 0.5A_x000D_ Contact rating (Max): 10W_x000D_ _x000D_ Package List:_x000D_ 1 * Liquid Float Switch