This switch is a reliable and affordable way to convert manual bilge pumps to automatic operation.Designed to convert manual Attwood and other non-automatic electric bilge pumps to automatic operation, this float switch boasts a compact, low-profile design. It can be mounted on any surface from horizontal up to a 24. Designed to convert manual Attwood and other non-automatic electric bilge pumps to automatic operation. Switch activates the pump at 2" of water level. Integral cover dampens bilge sloshing to reduce pump cycling.KeyFeaturesReliable, proven and affordable mechanical float designIntegral cover dampens bilge sloshing to reduce pump cyclingSealed mechanism resists moisture, fume-ignitionMercury-free design is better for the environmentTest knob for manual checkSold without a coverThree year warrantySpecifications Amperage capacity: 12A Dimensions:2 5/8"H x 3 7/8"W x 4 1/4"L Voltage: For 12V or 24V pumpsFor certifications and a dimensional drawing of this switch, see the Attwood Automatic Float Switch Specification Sheet.