Rule LP900S LoPro Low Profile 900GPH Automatic Bilge Pump

LP900S has two automated settings, enabling the pump to turn on when the water reaches either 1″ or 1-3/4″. In addition, the electronic automatic mode allows the pump to check for water every 2-1/2 minutes. If water is detected, the pump stays on until the water is removed. If no water is detected, then the pump turns off.