The Rule Bilge Pump Rocker Switch 12v No 43 controls any automatic pump or pump equipped with an automatic float switch. This unit features a black plastic panel with 3 way postion: 'On, Manual and Auto'. It has a built-in fuse holder and an internally lighted rocker switch with 3 positions. Also comes with the Rule "fail-safe" spring return to "off" from the "manual" position. Fuse holder does not include the fuse which needs to be matched with the pump in use (typically 4-15A depending on pump). Features Use for automatically controlled bilge pumps Lit backlight for night use: red light indicates pump running. 3-Way switch with: 'Auto, Off and Man' Fail-safe switch prevents the pump from being left on when used manually. Specifications Dimensions: 73mm wide, 60mm high. Maximum Current: 20(amps). Voltage: 12v systems only Requires 4 x 6mm screws not included (SOW1465)