Seachoice Float Switch - Universal 20ASeachoice 19404 Universal Float Switch, 12V, 20 Amps Max Complies to ABYC, NMMA, CG, SAEJ1171, CE, ROSH. ISO 8846 Marine & ISO 8849 Marine Specifications. NMMA Type Accepted Activates pump automatically For use with all DC bilge pumps Ignition protected Marine grade tinned wire Pump turns on when water level reaches 2" and turns off when water level reaches 3 4" Three year warranty Note: Do not used with 110V applications. Use this pump with the