This Choice basic mechanical room thermostat is an economical and simple-to-use solution for controlling room temperature. Turn the mechanical control dial to your desired setting to regulate the heat. An audible click is produced when the dial passes the current room temperature, indicating when the system turns ON or OFF. This 2-wire mechanical thermostat is easy to install and features volt-free contacts, making it compatible with systems using a combination or standard boiler. For 3-wire installations, simply cut back and make safe the neutral wire. This thermostat is designed for long-lasting, reliable performance. It provides automatic ON/OFF control for heating systems by sensing air temperature—activating the heating when the temperature drops below the set point and turning it off once the desired temperature is reached. Features: - Dual diaphragm temperature sensing element - Suitable for surface or pattress box mounting - Set point range: 10°C to 30°C - Current rating: 10(3) Amp - 2-wire installation - Power supply: 220V AC, 50–60Hz - Temperature setting range: 10°C to 30°C - Terminal differential: Approx. 4°C - Operating temperature range: -25°C to 55°C - Dimensions: 83mm (L) x 83mm (H) x 31mm (D) Package Includes: 1 x Thermostat