Specifications: Product NameWater Level SensorFloat Ball MaterialStainless SteelFloat Body MaterialStainless SteelVoltage Curren PowerDC100V 0.5A 10WContactsNO + NCMax Breakdown Voltage/ Max Carry Current220V 1.0AMax Contact Resistance100mΩTemperature Rating-10 to +85 DegreeFloat Ball Size2.6 x 2.6cm / 1 x 1 (H*D)Screw Thread Diameter9.5mm/ 0.37 Rod Diameter8mm/ 0.3 Body Total Length30cm/ 11.8 Cable Length35cm/ 13.8 ColorSilver ToneWeight102gPackage Content1 x Water Level Sensor Description: A float switch is a device used to sense the level of liquid within a tank. 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.