And based on affordability, ease of use and effectiveness, its the product of choice across the whole spectrum of heating, electrical and plumbing applications.
Just check out the following features below -
> 7 Day Programmable - 26 Preset Programmes - Digital Display - 3 On/Off Periods per Day
> Hot Water Boost function. BS 60730-2-7, EN 50081-1 and EN 50082-1.
> Suitable for Gravity-Fed & Pumped Systems
> 2 Year Manufacturer's Guarantee
> Override facility.
> Battery Back-Up
> Energy Saving Trust Approved
> Industry standard six pin backplate
> Mains powered (includes battery back up)
> Simple to install and replace with 3 Wire Installation + full installation wiring instruction manual included.
Replaces - Honeywell c21, c27 and Newlec nlc21, nlc27
If you're looking for a quality product with a proven track record, go here where the above product can be picked up at a massive discount to retail pricing -