ESI 3 Channel Multipurpose Programmer 7 Day 5/2 Day 24 Hour ES3247B

ESI 3 Channel Multipurpose Programer 7 Day 5/2 Day 24 Hour. This thermostat allows you to control when hot water turns on or off up to 3 times a day. There is total flexibility and you may choose the times you want your hot water turned on or off. It features innovative technology such as a Gravity System, which does not allow Central Heating without Hot Water but can provide Hot Water without Central Heating. It has a built-in non-replaceable battery which is designed to last for a lifetime. The clock is automatically programmed to adjust to winter time and summer time when times change. The clock is factory set to UK time but can be changed easily through the menu. During installation, you will have the option of 24-hour, 5-day/ 2day, or 7-day programming and 2 or 3 on/off periods per day, via a 4-position DIP switch on the back of the unit. The programmer itself is finished in a clear white.