Ideal to control tank filling systems this vertical movement float switch fits quickly to the lid or top cover of a tank or other container. A mere 20mm travel distance for the float will trigger the switch ensuring you leave an air gap and don't overfill the vessel. Contacts are closed when the float is out of liquid and open when the float is elevated. Contact Rating: 200V 500mA Mounting Diameter: 8mm AC current rating : 500mA AC Voltage rating : 200V Linear travel direction : Bi-Direction Linear travel distance : 40mm Length : 70mm Diameter : 23mm Mounting Method : Panel Attachment / Securing Method : Collar / Nut Max Mount Panel Thickness : 4mm Round Mount Hole Diameter : 8mm Switch Type : Float Poles / Contacts : 1 pole Throws / Positions : 1pos