Watch as Ace’s Home Expert, Lou Manfredini, shows you how the Basement Watchdog Water Alarm can alert you to water in your home. Use the Basement Watchdog Battery-Operated Water Alarm to detect leaks before costly water damage occurs. This alarm can detect as little as 1/32 inch of water and produces a loud 110 dB alarm that can be heard throughout the house to provide an effective early warning system.