The ES2247B is a two channel multi purpose programmer with the flexibility of two or three on/off timings per day and can be configured for 7 day, 5/2 day or 24 hour operation for independent channels (all within the one unit), allowing one product to suit all installations alleviating any potential of incorrect selection. It is designed primarily for separate control of your heating and stored hot water (S or Y plan). The heating and hot water programmes are independent of each other, giving you the opportunity to operate the system in the most energy efficient and cost effective manner. The new range of programmers hold a 3 year guarantee for consumer and installer peace of mind and are focused on value, quality and simplicity, offering an economical and durable solution for households. http://www.esicontrols.co.uk/es2247b.html