Specifications: Product NameWater Level SensorModel No.ZP1210-SL-2ContactsNO+NCMax Contact Rating10WMax Switching Voltage100V DCMax Switching Current0.5AMax Breakdown Voltage220V DCMax Carry Current1.0AMax Contact Resistance100mΩTemperature Rating-30 ~ +125 °CFloat Ball MaterialSUS304Float Body MaterialSUS304Float Ball Size(Approx)26.2 x 26mm / 1.03 x 1.02 (L*D)Thread Dia(Approx)9.8mm / 0.386 Hex Nut Size(Approx)16.6mm / 0.654 16.8mm / 0.661 Bottom Clip Dia(Approxc)14.5mm / 0.571 Body Total Length(Approx)120.2mm / 4.7 Body Total Width(Approx)71mm / 2.7 Cable Length30cm / 11.8 ColorSilver ToneNet Weight69gPackage Content1 x Water Level Sensor Description: A float switch is a device used to sense the level of liquid within a tank. The switch may actuate a pump an indicator an alarm or other device. It can be easily converted from normally open to normally close by invertin the float. Note: because the current that the switch can carry is much little(0.5A) you must use a relay or contactor when it is connected by a load relay and contactor are not included here.