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. 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 insulate the neutral wire; this 2-wire thermostat will then provide reliable performance for years. Designed for straightforward automatic ON/OFF control of heating systems, it senses air temperature and activates the heating when the temperature drops below the set point, turning off once the desired temperature is reached. Features: - Dual diaphragm temperature sensing element - Suitable for surface or pattress box mounting - Set point range: 10C to 30C - Current rating: 10(3) Amps - 2-wire installation - Power supply: 220V AC, 5060Hz - Temperature setting range: 10C to 30C - Terminal differential: Approx. 4C - Operating temperature range: -25C to 55C - Dimensions: 83mm (L) x 83mm (H) x 31mm (D) Package Includes: 1 x Thermostat