The T4 is designed to provide automatic time and temperature control of domestic systems. It is compatible with 24-230V on/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

Clear user friendly digital display with easily identifiable icons and backlight

7 day 5/2 day or single day scheduling giving users a schedule to suit their needs

Easy override functionality allows users to quickly make occasional changes 1 hour 2 hours or until the next set point

Automatic summer and winter time changes give users all year efficient control

Adjustable frost protection for added peace of mind

Receiver box with Simple flip up wiring bar in receiver box Utilise existing wiring from a wired thermostat Specific OpenTherm terminals