This Choice basic mechanical room thermostat is an economical and simple-to-use solution for temperature control. Turn the mechanical dial to your desired temperature setting to regulate room heat. An ble click indicates when the system turns ON or OFF, providing clear feedback during adjustment. This 2-wire mechanical thermostat is easy to install and features volt-free contacts, making it compatible with systems using a combination boiler or standard boiler. For 3-wire installations, simply cut back and make safe the neutral wire. Designed for reliable performance, this thermostat provides automatic ON/OFF control by sensing air temperature and activating the heating system when temperatures drop below the set point, then switching 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 Terminal differential: Approx. 4°C Operating temperature range: -25°C to 55°C Dimensions: L83 x H83 x D31mm Package Includes: 1 PC Thermostat