Honeywell HomeT4 is designed to provide automatic time and temperature control of domestic systems. It is compatible with 24 V to 230 V on or off appliances such as gas boilers, combi-boilers and zone valves and can be used as a temperature sensing device in an S or Y Plan system. It is well suited to control combination boiler installations or additional zones in an S Plan Plus system. The Honeywell Home T4R 7 Day Wireless Programmable Thermostat (Y4H910RF4003) is the wireless version of Honeywell’s T4 thermostat range with OpenTherm control as standard via the Honeywell Home R4H910RF wireless receiver box, offering a simple solution designed to fit any boiler. The Honeywell Home T4R 7 Day Wireless Programmable Thermostat (Y4H910RF4003) is the wireless version of Honeywell's T4 thermostat range with OpenTherm control as standard via the Honeywell Home R4H910RF wireless receiver box, offering a simple solution designed to fit any boiler.

Note: This is the Honeywell recommended replacement thermostat control unit for the discontinued CMS927B1049 model. Compatible with 24–230v on/off, OpenTherm appliances such as gas boilers Combi boilers and heat pump The Honeywell Home T4 Series uses standard thermostat fittings and connections, offering installers an easy, inexpensive choice when it comes to replacing an old thermostat. On screen text display and function buttons to ensure simplified programming and operation for all users This is a modern wireless 7-day Programmable Room Thermostat. It is designed to provide automatic time and temperature control of domestic systems in domestic or light commercial premises.

Energy & commercial

The T4 Series uses standard thermostat fittings and connections, offering installers an easy, inexpensive choice when it comes to replacing an old thermostat. After fitting, T4 Series thermostats are ready to use!

Well suited to control combination boiler installations or additional zones in an S Plan Plus system Designed for the installer in mind, this relay box comes pre-bound to the Honeywell T4R and provides the link between the boiler and the wireless thermostat.When being installed the only wiring required is the connection of the relay unit (supplied) to the device being controlled, such as a boiler. The controller should be placed in an area where the RF signal (868 MHz) between the controller and relay unit isn?t hampered. Typical operating range is 30 metres. The Honeywell Home T4R has automatic summer and winter time changes for all-year efficient control and a standby mode with frost protection for added peace of mind. It is also suitable for Sundial S and Y Plan systems or for additional zones in an S Plan Plus system.

Designed for domestic and light commercial premises, the Honeywell Home T4 Series of programmable thermostats simplifies temperature scheduling, offering a level of usability and control your customers now expect from today’s technology. The Honeywell Home T4/T4M/T4R are designed to provide automatic time and temperature control of heating in domestic or light commercial premises.Compatible with 24-230V On / Off systems and OpenTherm systems such as gas boilers, combi boilers and heat pumps Once the connections have been made, the T4 series thermostats are ready for use and very easy to use Honeywell Home T4R 7 Day Wireless Programmable Thermostat (Y4H910RF4003) Honeywell Home T4R Wireless Programmable Thermostat (Y4H910RF4003) box contains: