The wall-mounted room thermostat is designed for comfortable and accurate control of indoor air temperature. The connection is made by means of 2 electrical cables connected to a heating or air conditioning unit. The device is powered by 2 alkaline LR03 (AAA) batteries with a voltage of 1.5 V. One set of batteries is enough for a year of constant operation of the appliance. The device of modern design is equipped with a liquid crystal display, which displays the values of the current and required temperature, as well as indicators of operating modes. Changing the operating mode and the required temperature is carried out by the control buttons.