This flush-mounted manual room thermostat is designed to provide automatic on/off control of electric underfloor heating systems and other electric heating elements. Temperature control range: 5℃~40℃. Output: Maximum 16 A. Safe and easy to use. Press the button and then set the room temperature by turning the knob. When the built-in air sensor detects that the room temperature reaches the preset temperature, the electric underfloor heating room thermostat automatically stops heating. Built-in sensor and 3m external NTC floor sensor. The built-in sensor is used for room temperature detection, while the external sensor is used for high floor temperature protection, ensuring that the maximum underfloor heating temperature does not exceed 50℃. LED indicator. This electric underfloor heating thermostat features an LED indicator that allows you to easily check whether your underfloor heating system is working. When the LED indicator is on, it indicates that the heating is in progress.