. Place the leak alarm in any potential flood spot—next to bathrooms, basements, kitchens, boats, or garages. When the leak alarm detects even a small water leak, it sounds a loud 110 dB alarm to alert you immediately. Automatic operation: once its three contact points touch water, it activates instantly. No buttons or programming required—simply place it where water leakage monitoring is needed. Requires one 9-volt alkaline battery (not included); typical battery life is up to one year. Suitable for use near water heaters, sink cabinets, sump pumps, washing machines, and radiators. Made of durable ABS plastic. Designed to float during flooding. Specifications: Material: ABS Plastic Color: White Cable Length: 1 meter Working Voltage: 9 V Battery: 9 V Alkaline Battery (not included) Alarm Sound Level: 110 dB Package Includes: 1, 2, or 3 Water Leakage Alarm Detectors