Flush-mounted clock thermostat is suitable for controlling central heating, hot water floor heating, hot air heating, etc. Very large display, the backlighting in white is off, briefly on after pressing a button. Single-line text display for self-explanatory operation. Automatic summer/winter time changeover. Preset and customisable lifestyle time programmes. Unauthorised person security. Optimum start (temperature is reached at the set time). Max. 9 switching times per day. Short-time timer (party) for changing the temperature by the hour. Frost protection function. Temperature setting range can be limited. Valve protection. PWM (Pulse Width modulation) or ON/OFF. Heating/cooling changeover, adaptation to valves de-energised open. Energy consumption display (switch-on x costs). Mounting in 55 mm flush-mounted box