Rated 2 out of
Unlike the other reviews, I could not recommend this unit
I have had two of these and both failed for the same reason - garbled displays.
I noticed that one of the other reviewers bought a second one because the first lost digits on the display.
While it worked it was OK, though too fiddly and complicated to set up with features that most folk wouldn't use.
Unfortunately, as usual, both were outside the short 12-month warranty.
Date published: 2016-11-07
Rated 5 out of
I bought this thermostat as a replacement for an identical existing unit. The previous one started losing some parts of the characters on the LCD display after 5 years service. Despite this, I bought another one simply because the performance of this thermostat is in my opinion the best for demostic application. My house tempreture is spot on the set desired temperature and always comfortable summer or winter (no overshoot). I tried different makes and types and this model has been outstanding. I have a Heat Pump heating system all the year round with back up Gas Boiler boost during the very cold periods. The CM901 has a features which control the heat pump's on/off cycling to its optimum working performance. The same exist for the gas boiler.
Date published: 2016-09-23
Rated 5 out of
CM901 Room Stat
No frills room thermostat. Simple to install. Looks very tidy and has a large LCD screen so even in the dimmest light its easy to see. For the price, it's a good piece of kit.
Date published: 2016-06-17
Rated 4 out of
Bought this to replace a Randall timer which had a permanent live / neutral to operate the timer linked to a switched live to operate the boiler. Just put the permanent live into A and the switched live into B, left the neutral and earth in connectors. Easy to programme / modify the built in programme. Worked straight away, now just need to wait to see what settings are best and if it is reliable.
Date published: 2016-05-30