ZDD Flush mount, this manual room thermostat is designed to provide automatic on/off control for electric underfloor heating systems and other electrical heating elements. Temperature control range: 5–40°C. Output: Max 16A. CE certified, safe and easy to use. Turn on the push button and then set the room temperature by turning the rotary knob. When the built-in air sensor detects that the room temperature reaches the preset level, the thermostat will automatically pause the heating. Features a built-in sensor and a 3m NTC external floor probe. The built-in sensor measures room temperature, while the external probe provides floor temperature protection to ensure the maximum floor temperature does not exceed 50°C. LED indicator shows when the heating system is active. When the LED is lit, heating is in progress. Specifications: Power supply: AC230V 50/60Hz; Power consumption: 5W; Temperature limit range: 25–55°C; Degree of protection: IP20. Package includes: 1 x thermostat, 1 x 3m floor sensor, 2 x mounting screws, 1 x English user manual. Safe, energy-saving, and high performance. Wall-mounted design for indoor installation with free air circulation around the unit. Avoid placement near heat sources, direct sunlight, drafts from doors or windows, or exterior walls that may affect temperature readings. Easy to use: Equipped with an on/off push button and rotary knob for simple temperature adjustment. The knob controls the desired temperature and activates or deactivates the heating output. Operation: 1. "I": On; "O": Off 2. Temperature setting: Turn the knob to the desired value 3. Indicator: LED lights up during heating operation Suitable for electric underfloor heating systems and other electrical heating applications.