The ESi Controls 1 Channel Programmer offers flexibility and reliability for use in any domestic heating and hot water installation. The ES1247B is a single channel multi-purpose programmer, designed primarily for timed control of your heating and hot water. Ideal for use with a combination boiler or a single heating zone. It can also be used in conjunction with an existing programmer to control additional heating zones or for when additional hot water cylinder control is required. The industry standard back plate makes installation quick and easy, with time and date pre-set and automatic summer/winter time adjustment. While the factory-set programme suits most households it is quick and very easy to adapt, making this a simple programmer to install and leave to do its job with little or no interaction. The blue back light on the programmer can be switched permanently on or off, depending on the user’s preference. When the back light is off, it can be lit at the push of a button and will then turn off again. The programmer can be configured for 24 hour, 5/2 day or 7 day operation, and has the flexibility of up to three on/off timings per day.