Rule Rule-A-Matic Float Switch 

"This popular design includes a removable base for easy cleaning and servicing, a mercury free snap switch tested to over one million cycles and marine grade "blocked" wire. 2-Year limited warranty."

Description: w/o Fuse Holder, Size: 2-1/4" x 5" x 1-3/4", Volts: 12/24, Amps: 14