1100GPH Electronic Sensing Bilge Pump - 12VIn the next generation sensing bilge pumps, the 1100GPH 12V 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!!! Great idea when power conservation is needed and as an added benefit, no float switch is needed!All that plus the added benefits of our standard bilge pump:
These are the smallest automatic pumps available on the market!!!