S-Series Electronic Sensing Bilge Pump, 500 GPH, 12 V-(Each)

Completely automatic with manual override
Submersible and ignition protected
High efficiency, low amp motor
Stainless-steel shaft
Includes backflow preventer
Will turn on every 2-1/2 minutes for about one second to sense for water and will continue to run until water is removed
Water is kept in check between 1/8″ and 3/8″ depths