The Honeywell TH6110D1021 is the latest generation of Honeywell Focus Pro 6000 digital thermostats. This Large Digit Display Programmable digital thermostat features 5-day weekday, Saturday and Sunday individual programs. The large Backlit display is easy to read and adjust. It can be programmed for manual or automatic system changeover from heating to cooling. This premium unit can be installed on all types of 24 volt or millivolt systems. Has 1 stage of heat and 1 stage of cooling control. Built in compressor delay to prevent damage due to short cycling.