Features: Free 24/7 home monitoring of your home or business environment for water leaks and remind immediately. Helps to avoid expensive leak damage and repairs. Battery Wi-Fi powered, allows for flexible and convenient placement without wires, under sinks, by washer, by toilets and hot water heaters, doorways and more. Battery powered with low energy consumption, it can operate in standby mode for 6-10 months. Provides remote home monitoring. Set push notifications to your mobile devices or sound and vibration for early alert of leaks in your home. Plug & Play with App, no hub required. Simply download the "smart life" App and link it to the water sensor. From the App you will receive push notification of water leakage and it also possible to keep on eye on the battery level of the device. There are two alarm option: battery and water. Specification: Condition: Brand New Material: ABS Color: White App: smart life Batteries: 2 * AAA batteries (not included) Standby Time: 6-10 Months Wireless type: 2.4GHz Protocol: IEEE 802.11b/g/n Product size: approx.9.5 * 4 * 2cm/3.7 * 1.6 * 0.8in Package size: approx.10 * 5.5 * 2.5cm/3.9 * 2.1 * 1in Package List: 1 * Water Flood Sensor 1 * User Manual 1 * Sticker Note : Please allow 0-1 inch error due to manual measurement, thanks for your understanding. .