Dankoff Float Switch KitDankoff Float Switch Kit This is a "pump down" style of switch that's designed for automatic control of your Dankoff pump. It signals the pump to turn on when your water reservoir is low and off when the reservoir is full. The float switch must be connected to a pump controller for this setup. If it's used without a pump controller, it will turn the pump off when the tank is low and on when the tank is full. 1 Year Warranty