WiFi Smart Water Valve and Automatic Shutoff,Water Consumption Monitoring and LCD Screen Display of Water Flow Rate,Built in Rechargable Battery, for DN20 3/4-Inch Diameter Pipe. Wifi function and APP remote control: Wifi smart Water valve can connect to 2.4Ghz and 5Ghz Wifi, without gateway, you can quickly open/close the water valve on the app, and the mobile phone monitors, the water flow rate and water consumption in real time. Even on vacation or at work, you can monitor in real time. Ultrasonic flow detection: Adopts W-type ultrasonic water flow measurement technology, which is accurate and reliable. Users can set water flow rate alarms, and automatically open and close, the water valve when the water flow rate is lower or higher than the set value. For example, if a water, pipe bursts, the water valve can automatically close, thereby saving water and protecting your home water safety. Smart Water Meter:Monitor water usage with daily, monthly and last usage statistics, helping you manage water more efficiently and reduce waste. Easy installation: Requires 5V/2A AC power adapter for power supply, and equipped with long-life backup battery to avoid power outages and inability to control the water valve. Built-in 2600mAh capacity NiMH battery, rechargeable, can manually open/close the valve even in power outages. Note: In battery mode, you cannot use APP for control or monitoring. Automated scenes for use with water leak detectors: Through the Tuya app, users can set up scenes to work with the Tuya WiFi Water leak detector(sold seperately), such as automatically shut off a valve when a water leak is detected. Power:DC 5V2A Backup battery:AA(1.2V) x 3pcs Built in NI- battery with 2600mAh capacity,rechargeable battery Valve Open/close time:12seconds Copper Tube Diameter:DN20 Screen:LCD Water Flow reporting accuracy:0.1gaL Flow Rate reporting accuracy:0.1gal/min Operating water pressure:0-1.3MPa working temperature:1-60degree(34-140F) working humidity:1-95%RH Wireless frequency:IEEE 802.11 b/g,IEEE 802.11a/11n/11ac Bluetooth version 5.0 Waterproof leve:IP66 Smart Water Valve Real time screen display/detect water flow rate and water meter,shut on/off Please note: The adapter is an EU plug in default. Thread specification: 3/4 inch. Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on Voltage:AC220V Color: As Shown Material: Plastic+Metal Package Contents: 1 * Wifi water valve 1 * Wifi water sensor 1 * power adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.