Rule 25SA 500 Automatic Submersible Bilge Pump (ROUND) (12V / 31 LPM / 19mm) The Jabsco Rule 25SA 500 series automatic submersible bilge pump with 750mm cable eliminates the need for a separate float switch to activate the pump. Once power is supplied to the bilge pump, starting and stopping is completely automatic. The Rule automatic bilge pump turns on and checks for water every 2 1/2 minutes, during this check the pump runs for approximately 1/2 a second and checks for resistance or drag against the impeller. If resistance is encountered, it will run until water is no longer present. Thereafter the automatic bilge pump resumes the 2 1/2 minute check cycle. The automatic bilge pump can be started at any time by turning the power off; waiting 5 seconds and then turning the power back on. The pump will start immediately and pump until the water is removed. Voltage 12V DC Series Rule 500 Outlet For 19mm (3/4") ID Hose Length Pump: 74mm, Cable: 0.75 Meters (2.4 Feet) Height 107mm, Switch Cut In height: 38mm (1.5")