Features Fully functional, user can operate via device and APP. Large buttons are suitable for the elderly to use. LCD screen, operate easily and display clearly. Noise is low, less than 40 decibels. Save up to 30% on your heating bill. Low power consumption. Accessory is optional. Holiday mode self-start mode.Support multiple-language on the App side. Automatic on/off control of radiator valve according to temperature settings. LCD displays temperature, time and mode. Anti-calcification with weekly opening/closing of radiator valve. Boost function to temporarily speed up heating process. Detects sudden temperature drop and adjusts settings accordingly to sustain the ideal room temperature. Easy control keys for manual temperature adjustments. User friendly interface with 5 buttons. Child lock against unauthorised operation.Eco mode for energy-saving operation with reduced room temperature. Regular supervisory signals ensure the device’s proper operation. Valve protection function against calcification of the valve. Manual operation and configuration directly on the device, e.g. for setting the heating profile, holiday mode, temperature changes, etc. Standard radiator valves with M30 thread size can quick and easy installation without having to drain any water or intervening in the heating system