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 indicates when the system turns ON or OFF, providing clear feedback during operation. 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 insulate the neutral wire; this 2-wire thermostat will then provide reliable performance over many years. Designed for straightforward automatic ON/OFF control of heating systems, it operates by sensing air temperature—activating the heating when temperatures drop below the set point and deactivating 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 - Terminal differential: Approx. 4°C - Operating temperature range: -25°C to 55°C - Dimensions: L83 x H83 x D31mm Package Includes: 1 x Thermostat