The Link2Home Zigbee Thermostatic Radiator Valve is a smart add-on to your radiator, heating system, and boiler for a DIY multi-room heating solution. Link2Home radiator valves are the perfect solution to help you save energy. You can manage your heating room by room from your smartphone, tablet, or device. This sensor technology means you never have to waste money by heating an empty room or areas of your home you aren’t using. Simply turn down the radiator on your Link2Home Pro app from anywhere and save energy. Use the app to shut off a single area and maintain heating in the rest of your home. That’s not all, Link2Home radiator valves also work even if you don’t have a Link2Home Smart Thermostat. So, no matter what heating system you have, you can manage your heating via the Link2Home app. Please note that this product requires the Link2Home Zigbee Smart Gateway. Features: Precise Temperature Control: Smart, efficient heating to 0.5° setting accuracy lets you control individual rooms for multi-zone heating. Control all rooms remotely. Requires the Link2Home Zigbee Smart Gateway Link with the Link2Home Pro App: Use the app to shut-off or adjust each valve. Monitor your energy use, schedule, and adjust temperatures from anywhere via your smartphone, tablet, or laptop. See usage reports, graphs, and track your usage trends. Free for Android and iOS Save Energy: Each sensor allows you to set and adjust temperatures and save costs on your heating bills. Never heat an empty room again Easy to Install: Easy zoning in any home. Can be mounted on any radiator vertically or horizontally. LCD display and easy setup with the app and hub Requires: Must be linked with a Link2Home Zigbee Smart Gateway Module Hub. Each valve needs 2 AA batteries Specifications: Dimensions: H:0.0 x W:5.5 x D:9.4 cm Colour: White Guarantee:2 years Material: Pc Plastic Model Number: L2H-TRVZGE