The T3R thermostats are designed to provide automatic time and temperature control of heating systems in homes and apartments. The Tr3 It's compatible with 24 230V on/off appliances such as gas boilers, combi boilers and heat pump. Also works with zone valve applications but not with electric heating (240V). The T3R versions support also OpenTherm appliances. The solution is designed with the installer in mind and includes a receiver module with mounting options for directly on the wall or on a wall box. Wiring can be from below or from the back by lifting the terminal platform, which makes installation quick and easy. The thermostat has a large and clear fix segment display with backlight, simple programming philosophy all to make it easier to install and very user friendly.