The Rule Bilge Pump Rocker Switch 12v No 45 controls any automatic pump or pump equipped with an automatic float switch. This unit features a black metal panel with 3 way postion: ', Manual (spring loaded), Off. and Auto'. Also comes with the Rule "fail-safe" spring return to "off" from the "manual" position. Features Use for automatically controlled bilge pumps 3-Way switch with: 'Auto, Off and Man' Fail-safe switch prevents the pump from being left on when used manually. Specifications Voltage: 12/24 V Max current: 20 A Length: 57 mm Width: 51 mm