The ESI Controls ES3247B is a wired 3 channel programmer for domestic or light commercial heating and hot water systems. It is quick to install, reliable and simple to use, offering full flexibility to control two heating zones and a hot water time programme to help regulate energy use and lower costs. The ES3247B provides three completely independent time-controlled channels for heating and hot water, making it ideal for controlling two individual heating zones and separate hot water control. This allows your system to be operated in an energy-efficient and cost-effective way. Under a lift-up flap, an easy-to-use slider allows for permanent setting selection, while buttons enable flexible settings including time periods and days. The multi-channel capabilities enable compliance with Part L of the amended Building Regulations. Features include 24-hour, 5/2 day, or 7-day operation, 2 or 3 on/offs per day, automatic BST/GMT time change, a factory-set clock and date, simple overrides, and an easy-fit backplate. It comes with a 3-year warranty.