This is a thermostat for fan coils, specifically the model TH-0022 from the brand XPERT.

The XPERT TH-0022 thermostat for fan coils:

1. Regulates Temperature: Maintains the desired room temperature.

2. Controls Fan Speed: Adjusts the fan speed (low, medium, high).

3. Selects Modes: Offers on, auto, and off modes.

4. Saves Energy: Optimizes energy use for efficiency.

Its main function is to control the fan coil unit to keep the indoor climate comfortable and energy-efficient.