This programmable thermostat is powered by 2x AA batteries and features a 7-day or 5+2 default heating schedule with 6 time/temperature set points. It is compatible with 24-230V on/off appliances such as gas boilers, combi boilers, and heat pumps, as well as zone valve applications (excluding electric heating 240V). The thermostat boasts a modern, minimalistic design with a large backlit screen and an intuitive interface for easy operation. It includes a self-learning TPI algorithm that adapts to your space and offers automatic time clock adjustment. The package includes 2 AA batteries and a 2-year warranty.