Self Learning Preheat: The Slimline-E thermostat features optimum start, a smart function that calculates the required heat-up time for optimal comfort. Frost Protection: The thermostat includes an adjustable temperature setting for frost protection, preventing freezing and maintaining the integrity of your underfloor heating system. Floor Sensor Included: The thermostat comes with a floor sensor, ensuring accurate temperature measurement and control. Flexible Programming: Choose from non-programmable, 5/2 day, or 7-day programming options to suit your specific needs and preferences.