"My ST6400C programmer failed whilst on holiday. Bought this product (replacement model) and all I had to do was plug it straight onto the original backplate with no need to rewire. This then ensured that all other thermostat controls in the house continued to work."
"Needed to replace my 25yr old ST7100. Changed back-plate followed wiring instructions, switched back on - worked. Screwfix not cheapest but available locally. Can't tell about reliability but would like to think this controller will also last 25yrs :)"
"I reqired a controller for our local church which was versatile, easy to use and install. It replaced two timers controlling two zones and needed to be easily operated. A seven day programme was a must since Sunday is the main day. Fitting was straight forward and the large display is excellent. The override feature is very handy."
"a quality Replacement for my old, and faulty, timer/pgrammer.
clearly well buit, with sturdy casing and a good display window for easy reading in a poorly lit (under shelf) location. A well written installation note ensured no problems with replacing an older Honeywell model.
but, as always, ensure the backplate is cleaned of debris My only problem was in the poor connectivity with the contact pins as previous debris prevented a flush fit - presenting as poor power connection and a therefore a 'dead' display.
Once the backplate was cleaned, and the new unit re-presented, this problem was never seen again"
"Purchased this programmer to replace existing older version. Easy to install. You simply take off the front of the old one and place the new one on the back plate left on wall. An improvement on the old including a better, lit display. I would recommend this product."
"Brought as a direct replacement to another which had failed in auto mode, CH not coming ON as programmed, HW all OK. After manual over ride all is well again? One of the problems I find with all electronic devises is that there is little you do beside replacement.......built in obsolescence! This is a good product with a fairly straight forward set up / programming, end user in this case likes the features."
"Only used this Programmer now for approx. one month but very pleased with it to-date. Still to use holiday programme. Great that it just fitted into existing backplate from previous Honeywell Programmer."
"I needed to replace a faulty type 721 programmer and this unit was a straight replacement.Just removed the old unit and plugged in this one no messing, even the date and time were correct, brilliant."
"I used this to replace an existing one that had only lasted a couple of years. After fitting (which was very easy due to the universal backplate) i spoke to a neighbour who told me about half the estate had had these programmers replaced. Maybe in hindsight i wouldn't have fitted it, however i can't fault it while it does work. Very good, easy to understand but fully featured. Excellent price as well."
"BAD - Unit stopped working just 2 years after installation. Expensive product that should last a lot longer than this. GOOD - Has lots of features including automatic update of GST/BST hour changes which is very useful and gives peace of mind. Worked great while it did. Surely it could be cheaper though...."