The SwitchBot WiFi Water Leak Detector is a smart flood sensor designed to detect water leaks and notify you with a 100dB alarm and app alerts. It is powered by a single 1.5-volt battery and is white in color. The device is connected to your home network via Wi-Fi, allowing you to monitor and control it remotely. This innovative sensor helps you stay safe and secure by alerting you to potential water leaks before they cause any damage to your home. Superb condition cleaner ready to go. Seller has perfect ratings and ships fast and secure. I’ve been in Ebay for over 20 years. Have fun