Rule Automatic RM1500A bilge pump eliminates the need for a separate float switch to activate the pump. Once power is supplied, starting and stopping is completely automatic. The pump checks for water every 2 minutes by turning on for a second and measuring load against the impeller. If water is present, the pump remains on until the water is removed. Thereafter the pump resumes its 2 minute check cycle. The automatic pumps feature two positive leads: an automatic (brown) and a manual override (brown with a white stripe).FeaturesFully automated bilge pump with integral float switchIncludes level sense technology with fail-safe backup modeFor medium sized yachts, motor cruisers and smaller commercial craftTough plastic bodyQuick release inlet strainer allows rapid cleaningLow amp draw conserves batteriesIgnition protectedSpecificationsConnections: For 25mm & 28mm (1″ & 1 1/8″) bore hoseDimensions: 150mm long, 150mm high, 110mm wideFuse Size:9(amp)Output: Up to 95 litres/minute (21 gallons/minute)Discharge Head: Max. recommended discharge head 2mPanel SwitchesThis is a 3 Wire pump – Use a 12 volt 3 Way Panel Switch to complete the install – See Related Products