This modern, economical, functional and fully programmable thermostat was developed with your comfort in mind. The T3 enables automatic time and temperature control of heating systems in houses and apartments.T3 saves energy - the advanced Honeywell Home TPI self-learning algorithm ensures boiler control is more efficient than ever before.This thermostat is easy to operate and has precise temperature control, which makes the operation of boilers more efficient. It features contemporary design, clear, backlit temperature displays visible from a distance, and large temperature buttons that are easy to use. Its simple programming philosophy makes the installation simple and extremely user-friendly.The T3 wired thermostat has a simple two-wire installation option and a service life of 2 years (2 x AA batteries included), was designed to simplify the installation and replacement of your current thermostat.This thermostat is compatible with 24 - 230 V on/off devices such as gas boilers, combination boilers and heat pumps. It also works in zone valve applications. Not suitable for electric heaters.This text is machine translated.