Doberman Security SE-0111 Water Detector Alert 100dB Alarm + Miniature Keychain Mini Waterproof LED Flashlight Torch Loud 100dB alarm will alert you of any water leakage. Sensor extends to the floor from mounting site. Easily mounts onto any wall with included adhesive (peel / stick). For use in basements and other potentially damp household areas, identifies pipe bursts, leaking washers or a flooded basement before significant damage can occur. Requires two AAA batteries (Sold Seperately)