SA 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 converted from normally open to normally by inverting 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 or contactor are not included here.Cable color may be different, we will random shipment.Product Name: Water Level SensorModel No.: ZP4510Max Contact Rating: 10WMax Switching Voltage: 100V DC/ACMax Switching Current: 0.5AMax Breakdown Voltage: 220V DC/ACMax Carry Current: 1AMax Contact Resistance: 100m ohmTemperature Rating: -20 / +80 CelsuisFloat Ball Material: PPFloat Body Material: PPThread Dia(): 9.5mm / 0.374"Switch Body Size: 23.3 x 57.7mm / 0.9" x 2.27"(Max D*H)Cable Length: 36cm / 14.2"Color: WhiteNet Weight: 70gPackage Contents:5 x Water Level SensorOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.