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 manage the heat level in your space. An audible click is produced when adjusting the dial past the current 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 either a combination boiler or standard boiler. For 3-wire installations, simply cut back and make safe the neutral wire. This thermostat is designed for reliable, long-term performance. It provides automatic ON/OFF control for heating systems by sensing air temperature—activating the heating when temperatures drop below the set point and turning 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) Amps - 2-wire installation - Power supply: 220V AC, 50–60Hz - 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