SEAFLO latest automatic 1500GPH, 2000GPH bilge pumps offer water evacuation without extra float switch needed. SEAFLO electronic sensing series bilge pumps turn the pump impeller every 2-1/2 minutes for approximately 0.5 second. If water is present, the pump will sense resistance and will continue to run until all water is removed. This system is a compact way of constantly sensing for water presence. New innovative split quick-connect joint design removes and installs in seconds! Change pump never been so easy. No need to disconnect base or plumbing when replacing pump, which can meet the needs of most users. Just replace the motor that is all.