A thermostat is a device used to regulate temperature by maintaining it within a specified range. It’s commonly employed in heating, cooling, air conditioning systems, refrigerators, water heaters, and various other appliances or systems that require temperature control.

The primary function of a thermostat is to sense the temperature of a space or an object and then take action to maintain the desired temperature by controlling a heating or cooling source. When the temperature deviates from the setpoint, the thermostat triggers the heating or cooling system to activate or deactivate, ensuring the environment remains within the desired temperature range.