Basement Watchdog BWC1 Basement Watchdog Dual Float Sump Pump Switch with Controller Large float detects 1/4 in. water level rises, making automatic pump activation easy Second float activates your sump pump if the first float does not, helping your sump drain effectively Protective float cage helps keep debris and wiring from interfering with float movement; vented, curved bottom reduces debris build-up under the float Allows your sump to run for an additional 10 seconds to drain excess water for simple water level maintenance Includes controller and hose clamp that lets you easily install the floats at any level