Rule 500GPH Electronic Sensing Bilge Pump - 12V [25SA] Brand_Polyform U.S. Helm Switch Kit R001441 includes

Helm Switch Kit R001441 includes - rocker switch face plate and four screws

Adjustable back lit display in feet

Factory P/N VP9139

T-Handle Latch - Chrome Plated Zamac/White Nylon - Locking - Freshwater Only

Rule 500GPH Electronic Sensing Bilge Pump - 12V [25SA] Brand_Polyform U.S. Helm Switch Kit R001441 includes500GPH Electronic Sensing Bilge Pump 12V In the next generation sensing bilge pumps, the 500GPH S series pump works on the principle of impeller resistance. The pump will turn on every 2 1 2 minutes for about one second to sense for water. If water is present, the pump will sense resistance and continue to run until all water is removed. After that, it will resume checking for water every 2 1 2 minutes. Water is kept in check between 1 8" and 3 8"!!!