Full working order ready to pair . The Worcester Greenstar Comfort+ II RF Thermostat 7738112324 is a programmable thermostat with a 1-week programming capability, suitable for use with Worcester Bosch boilers. This wireless thermostat features a square shape design, wall-mounted installation, and operates on battery power using AA batteries. The thermostat is compatible with the Greenstar 8000 model and provides system switching with auto functionality. It also includes features such as a digital display and adjustable thermostat settings, making it an ideal choice for controlling the heating in a central heating radiator system.