Honeywell T4R 7 Day Wireless Programmable Thermostat | Y4H910RF4003

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Honeywell T4R 7 Day Wireless Programmable Thermostat | Y4H910RF4003

The Honeywell T4R is a 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.


  • Compatible with 24-230V on/off appliances such as gas boilers, combi-boilers and zone valve

  • The T4 can be used as a temperature sensing device in an S or Y Plan system

  • Well suited to control combination boiler installations or additional zones in an S Plan Plus system

  • Wireless communication between thermostat and receiver box with 30m range

  • Pre-bound to the wireless relay box, no need to establish a binding

  • On screen text display and function buttons to ensure simplified programming and operation for all users

  • Energy saving TPI control

  • Optimum stop & start features that learn how the room is heated

  • Two wire, volt free connections are ideal for use with combination boilers

  • Easy to fit with a three step installation process: Wire, Power Up and Test, Configure

  • New improved wall plate with extra wiring space

  • Optional Wired external sensor available (wired versions only)

  • On screen heat demand icon makes start up testing easy

  • Simple push button access to configuration menus

  • Adjustable Frost protection

  • Away mode with specific temperature set (number of days changeable)

  • Temporary schedule override until next set point or for 1 or 2 hours

  • Schedule can be turned off – will operate as a variable setting thermostat only

  • Displayed on an extra-large LCD screen

  • Automatic Summer/Winter time change

  • 7-day programming with 7 day; 5/2 or single day schedules

  • Four or six independent time & temperature settings (default is 4)

  • Pre-configured 5/2 heating schedule

  • Battery powered (with low-power indicator)

  • Easy change battery compartment

  • Optional backlight with extended light on time period

  • Burner 'ON' symbol

Wireless Relay Box

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.

  • Lift up wiring bar for easy wiring

  • OpenTherm terminals as standard

  • Clear wiring labels

Name Honeywell T4R 7 Day Wireless Programmable Thermostat - Y4H910RF4003
Product Code 161949
MPN Y4H910RF4003
EAN 5025121381079
Type Heating Controls
Sub Type Programmable Thermostats
Warranty (Years) 1

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