PHCC Indoor High-water AlarmSKU: PWAHigh-Water Alarms4NE49Detects water as shallow as 1/32" and immediately sounds alarm for up to 72 hours on a new 9V alkaline battery (available separately)Indoor Water AlarmAudio Alarm 110 dB @1 FtCable Length 6 FtPower Source 9 VDCAlerts Presence of Unwanted WaterSounds Alarm When 1/32 In Water DetectedDiameter 3 1/4 InHeight 4 1/2 InWidth 1 1/2 In**