Flush-mounted thermostat suitable for all standard switch ranges. Polar white glossy, 55x55 cover without frame. Suitable for controlling central heating, hot water underfloor heating, warm air heating, etc. Very large display, backlighting in white is off, briefly on at the touch of a button. Single-line text display for self-explanatory operation. Simple switching between 2 temperatures (e.g. comfort and setback temperature). ECO input for activating a freely adjustable temperature, e.g. for night setback. Short-term timer (party) for changing the temperature by the hour. Energy consumption display (switch-on time * costs). Frost protection. Unauthorized access protection. PWM or 2-point control method. Adaptation to normally open valves. Heating or cooling adjustable. Valve protection. Installation in 55 mm flush-mounted box