Water Overflow Leakage Alarm Sensor Detector 90dB Water Level Alarm Leak Flood Detection Home Security Alarm System Material: Plastic Color: White Size(Diameter x Height): about 8.2 x 3.2cm (3.23 x 1.26inch) working voltage: 9v Alarm: 90dB Package Contents: 1 * Water Leak Alarm Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Automatic operation. Once its three contactors Touching water, it will sound immediately with 85dB loud alarm;No buttons, no programming, just place it where you want to check water leakage; Requires a 9-volt alkaline battery(not included),and normally a new battery can last for 1 year;Use by water heater, sink cabinet, sump pump, washing machine, radiators and more;Made of Plastics. It is specially designed to float in flood circumstances. 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. Water damage is one of the most common and costliest problems affecting homes. Even a small amount of water can cause serious damage to your home. Now with Water Leak Alarm, you have a way to know when and where you have a leak in your home before it becomes a costly problem. Leak Alarm Water Leak Detector - Warns you of a leak before it becomes a flood.