Features: - Place the Leak Alarm in any potential flood spot - next to bathrooms, basements, kitchens, boats, garages or etc. When the Leak Alarm detects even a small water leak, it sounds a very loud alarm and lets you know that you have a problem that needs your immediate attention. - Automatic operation. Once its three contactors touch water, it will sound immediately with loud alarm. - Easy to installation. When the Leak Alarm detects even a small water leak, it sounds a very loud alarm and lets you know that you have a problem that needs your immediate attention. - Requires a 9-volt alkaline battery (not included) ,and normally a new battery can last for 1 year. - Made of durable ABS Plastics. It is specially designed to float in flood circumstances.Specifications:Material: ABSPlasticColor: WhiteWorkingvoltage:9VBattery: 9V AlkalineBattery (not included) Alarm: 110dBPackageIncluded: 1 xAlarm DetectorDetail Pictures: Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.