1. Starter Kit Addon, Hub Required Expand your KETOTEK Smart Radiator Valve Starter Kit with more TRV addons for roombyroom heating control. These radiator thermostats are designed to work together with the Starter Kit. Make sure you have our Hub, as it is required to connect these individual radiator thermostats to your home WiFi network. 2. Flexible Control Set the temperature directly on the radiator thermostat, or via the app and voice commands. The app allows you to control your radiator thermostat valve room by room or create a group to control them together. Use voice commands to adjust temperatures in individual rooms or groups of rooms. Fully compatible with Google Assistant. 3. Auto Mode or Manual Mode Choose Auto Mode or Manual Mode to suit your individual needs while saving energy and reducing costs on your electricity bill. Auto Mode features four timeperiod programs for each day of the week, giving you the freedom to schedule your daily routines so your comfort settings align with your time. 4. Energy Saving Heat your home only when needed to the right temperature with the heating schedule, saving energy and costs on your electricity bill. The open window detection makes ventilating your home even easier—the smart TRV will automatically pause heating when windows or doors are opened to prevent energy waste.