The ESI ES3247B Central Heating Programmer Timer is a white, wall-mounted device made of plastic, designed for controlling central heating radiators. It has a 7-day programmable schedule, push-button and digital control style, and is powered by 230V. The timer feature allows for precise scheduling, while the temperature sensor technology ensures efficient heating management. With a manufacturer warranty of 3 years, this ESI model is a reliable and user-friendly choice for managing your heating system's operation.