This ESI Digital Central Heating Room Thermostat with LCD and Delayed Start ESRTD3 is the perfect addition to your home heating system. It is compatible with any room and can be mounted on the wall or surface. The thermostat is designed with a 3-wire configuration and has a voltage of 230V AC. It features a digital display, dial, and rotary knob control style, making it easy to use and program. The thermostat is non-programmable and has a manufacturer warranty of 3 years. It is suitable for use with central heating radiators and underfloor heating systems. Get ready to enjoy a comfortable and efficient heating experience with this ESI Digital Central Heating Room Thermostat.