T4H110A1021 T4 wired wall mounted Thermostat only (spare)

The T4 programmable thermostat is a modern a wired 7-day Programmable Room Thermostat. It is designed to provide automatic time and temperature control of domestic systems in domestic or light commercial premises. Smart, simple and efficient. The T4 series helps energy savings through the pre-programmed clock program and provides a seamless the installation process through it's standardized mounting.

• 7 day, & 5/2 day scheduling with a pre-configured schedule included
• Battery powered (with low-power indicator)
• Four or six independent time periods a day (default setting 4)
• Compatible with 24–230v on/off, OpenTherm appliances such as gas boilers Combi boilers and heat pump
• On screen text display and function buttons to ensure simplified programming and operation for all users
• Optimum stop, start & delayed start features that learn how the room is heated
• Easy to fit with a three step installation process: Wire, Power Up and Test, Configure
• Improved wall plate with extra wiring space
• 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
• Continuous time, displayed in extra-large LCD
• Automatic Summer/Winter time change
• Easy change battery compartment
• Optional backlight with extended light on time period