The TotalHome TTHWP wired programmable room thermostat replaces the Honeywell CM907 7 day programmable thermostat and also wired CM901, CM707 and CM701 models. It is made and supported by Resideo, the company behind Honeywell Home and Honeywell's home heating business until 2018, with a dedicated UK technical support line.

• Replaces your Honeywell CM907: For wired Honeywell CM907, CM901, CM707 and CM701 room thermostats, including CMS907, CMS707, CMS701, CMT907A1041, CMT901A1044, CMT707A1029, CMT701A1014, CM707A1029, CMS907B1049, CMT901A1004 and CMT701A1041
• Same ABC terminals: Terminals labelled A, B and C, the same labels as the Honeywell CM907 backplate, so a like for like swap is simple. Rated 3(1)A at 24 to 230V. Must be fitted by a competent person
• Check your system first: A wired room thermostat for on/off boilers, combi boilers and 2 port zone valve systems. Not for wireless CM927, CM921 or CM727 kits (see the TotalHome TTHWFP wireless kit), OpenTherm only boilers or app systems
• 7 days, 4 periods a day: Set 4 time and temperature changes for each day, or copy one day to the rest of the week. Ready-made schedule 21°C from 6:30 and 18:00, 16°C from 8:00 and 22:30. The CM900 series allows 6, so check your routine fits
• Made and supported by Resideo: the company behind Honeywell Home and Honeywell's home heating business until 2018, with a dedicated UK technical support line
• AUTO, MAN or OFF: AUTO follows your schedule, MAN holds one temperature and OFF turns the heating off. Change the temperature for now and it returns to the schedule at the next period, or hold it until you change it
• Boiler Plus and battery powered: Boiler Plus compliant, with optimum start and stop that your installer can switch on. Runs on 2 x AA batteries (included) and shows a warning on screen when they run low

Fitting: the terminals are labelled A, B and C, the same labels as the Honeywell CM907 backplate, so a like for like swap is simple. It is rated 3(1)A at 24 to 230V and must be fitted by a competent person; the installation guide recommends a spot 1.2 to 1.5 m up.

Check your system: this is a wired thermostat for on/off boilers, combi boilers and 2 port zone valve systems. It is not for wireless CM927, CM921 or CM727 kits (see the TotalHome TTHWFP wireless kit), OpenTherm only boilers or app controlled systems.

Programming: set 4 periods a day, each with its own time and temperature, for every day of the week, or set one day and copy it to the rest. It arrives with a ready-made schedule: 21°C from 6:30, 16°C from 8:00, 21°C from 18:00 and 16°C from 22:30. The CM900 series allows 6 changes a day, so check your routine fits 4.

Everyday use: AUTO follows your schedule, MAN holds one temperature and OFF turns the heating off. Change the temperature with + and − and it holds until the next period, or set it to stay until you change it. Boiler Plus compliant, with optimum start and stop that the installer can switch on.

Power: runs on 2 x AA batteries (included), with a warning on screen at 10% and when critically low. The installer can also switch on automatic summer and winter clock change, a 12 or 24 hour clock and the backlight.

In the box: wired programmable room thermostat with backplate, 2 x AA batteries and the user and installation guide.