Meross Smart Thermostat for Electric Underfloor Heating System Compatible with most electric underfloor heating systems. Control from anywhere with internet anytime. Works with Apple HomeKit, Siri, Amazon Alexa, Google Assistant, and SmartThings. 0.5°C temperature accuracy with an adjustable temperature of 5~35°C. Pure white LED backlight, covered by an elegant glass panel. Minimalist design that fits any decoration.  Save your heating cost with a 7×24 hours smart graphic. Never worry about arriving home with a cold room, or leaving the house with the system heating. Open window detection function. Automatically stop heating when the open window is detected. Save more on your heating bill. Dual sensor system, integrated temperature sensor for accurate air temperature measurement, external temperature sensor for floor overheat protection. Works with the Wi-Fi you already have. No hub required. Recommended for use in Europe only due to its housing size, not suitable for the North American market.