Converts any bilge pump that draws 10 amps or less at 12-volts DC to fully automatic operation. The compact, low profile design allows the switch to be installed in confined area. It can also be mounted on any surface from horizontal up to a 35° angle. The integral cover dampens bilge sloshing to reduce pump cycling and prevents debris interference. The switch mechanism is completely isolated and sealed to resist moisture, fume-ignition and electrical shock, and contains no mercury or flexing wires. Activates pump at 2" water level.