Rule 500GPH Electronic Sensing Bilge Pump - 24V SNHORN3 Ultra-low profile

Ultra-low profile

compatible with both Attwood and Perko mounting holes

close the seacock and remove the quick-release plug

Manage your marine experience from nearly anywhere2

Replacement belt matches original as installed by MerCruiser

Rule 500GPH Electronic Sensing Bilge Pump - 24V SNHORN3 Ultra-low profile500GPH Electronic Sensing Bilge Pump 24V In the next generation sensing bilge pumps, the 500GPH 24V 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