"Replaced an old manual programmer. Easy to do, including changing the backplate as this would not fit on the old one which was at least two programmers old, still no problem just note down the wiring sequence before disassembling. It works well - smaller and neater than the old one. Independent switching and timing for hot water and central heating. Only gave it a 4 for reliability as I've only had it a few days but no reason to believe it won't be reliable."
"Bought this to replace a 23 year old Landis & Gyr controller which had decided I needed the heating on at 2AM!
Does exactly what it says. Easy to program and use. Although the instructions said it would fit (and did fit) the existing industry standard back plate I changed this to the new one as supplied with the controller. Very easy to swap the wires over one at a time. Took about 10 minutes to fit the back plate and about the same to program the unit.
Very pleased with the product so far and with next day delivery from Screwfix."