Drip and leak alarm: just place it in the bathroom, basement, under the sink or in the water heater to detect leaks before they cause costly water damage Loud Alarm: Motion sensor with ultra-loud 130dB alarm, loud enough to be heard even if leaks are in the base One-click activation. As long as you need, you can turn on the switch at any time to detect water leaks Loud 130 dB alarm. Over 130 dB sound can travel up to 100 meters, time is money and life when floods come! You can repair flood or water leak as soon as possible to protect your belongings. 1.Install the battery. Insert a new 9 V battery in the "water detector". Just like a smoke detector, it offers up to 2 years of protection. If you care about the battery power, you can press the test button on the water detector at any time to check the power. 2. Key switch. It also has an on/off switch. You can turn it off when water detection is done. You don't need to dry the sensor or remove the batteries to turn off the alarm. Very easy to use. 3. Responds to the alarm. When the metal contact of the water detector touches the water, a 130dB alarm will sound to notify you of the leak in time. Color: White Size: 86*55*26mm Quantity sold: 1 piece