Rule 500 GPH 1890 LPH Rule-Mate Automatic Boat Bilge Pump 12V SALE water temp With different contact hole sizes

With different contact hole sizes to prevent reverse polarity contact

the pulses are then electronically converted to a speed reading very much like a tachometer converts ignition pulses to RPM

Spark duration:  350 uS

Jabsco HOTSHOT 4HD Deckwash - Includes Strainer

- Coolant Expansion / Recovery Bottle & Cage with S/S Cap & Tube

Rule 500 GPH 1890 LPH Rule-Mate Automatic Boat Bilge Pump 12V SALE water temp With different contact hole sizesAll NEW versions of the Rule Mate fully automatic submersible bilge pumps offering more compact size with high performance & reliability. The RULE brand builds on more than 50 years of operational experience, innovation, design excellence & application expertise to offer modern solutions to todays boat owners and boatbuilders. The NEW Rule Mate Automatic bilge pumps are packed with many improved and additional features that are not available in other