Rule Combination Bilge Pump & Automatic Float Switch Includes: Rule 360 Bilge Pump Provides outstanding quality and value. It is economically priced and designed for small boats. 3/4" (19mm) discharge outlet. 12 Volts DC unless noted. Rule-A-Maticr Float Switch - No. 35A Float type switch which is good for all voltages to 110 VAC. Sealed construction protects internal circuits.