The Wifi Water Leak Detector by JJGELOS includes a circular-shaped gateway and three water alarm sensors, all powered by 3 Lithium Metal batteries (included). This smart home surveillance system offers triple real-time alerts and a sound level of 110 dB, ensuring quick detection of any potential water leaks. Designed for indoor use, this white device is lightweight at 10.5 ounces and is compatible with smartphones for easy monitoring. With its reliable performance and included components, this water leak detector provides peace of mind for homeowners looking to safeguard their property against water damage.

I am listing the item as an open box.  However, the item has not been used.

Because the item has remote monitoring, it gives you visibility to a potential water leak issue when you are away from the home.