REAL-TIME ALERTS, FREE APP NOTIFICATION: If the water sensor detects leaking water or the preset limit is exceeded, your smartphone will receive an alarm message through the Tuya app within seconds. Whether you are at the office or traveling, you can check the status via the app at any time. You can also share access with others so multiple users can receive alerts and monitor the wireless sensor activity. USE WI-FI, EASY TO INSTALL: No gateway or complicated setup required. Connect the water sensor to your home Wi-Fi in a few simple steps (2.4G Wi-Fi only). Use the included double-sided tape to install; simply place the water leak detector near or under the equipment you wish to monitor. WIDE APPLICATION: The water monitor detector can be used with sump pumps, toilets, laundry machines, dishwashers, sinks, fish tanks, and any other location prone to water leaks or flooding. The smart Wi-Fi water leak sensor can also monitor preset water levels in bathtubs, pools, and similar environments. LOW-POWER FOR LONGER BATTERY LIFE (BATTERIES NOT INCLUDED): The wireless water sensor is powered by 2 AAA batteries, providing up to a year of operation without battery replacement. When the battery is low, the app will notify you to replace it. Note: After water recedes, an alarm release message will be sent automatically. Power Source: Battery Powered Compatible Devices: Smartphone Number of Batteries: 2 AAA batteries required (not included) Control: App, Touch Color: White Material: ABS Package Contents: 1 x Water Immersion Sensor 1 x Double-sided tape 1 x Card pin 1 x English instruction manual Note: Light reflection and different display settings may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.