Commercialpro 7000 Programmable Commercial Thermostat, An Effortless, Seven-Day Programmable Thermostat That Provides Universal System Compatibility, Precise Comfort Control and Is Easy-To-Program. The Tb7220 Provides Temperature Control For Gas, Oil, Electric and Heat Pumps For Up To 2 Heat/ 2 Cool Systems. Large, Clear Display with Backlight Shows The Current and Set Temperature and Time, Even In The Dark. Menu-Driven Programming Make Setup Effortless. Beautiful Ergonomic Design; Smart and Sophisticated. Real-Time Clock Keeps Time During Power Failures and Automatically Updates To Daylight Savings. Saving Changes Notification Lets You Know When Schedule Changes Have Been Saved. Change Reminders Let You Know When To Replace The Batteries. Holiday Override Options Allow Override Of The Program Schedule, As Desired. Speedy Same-Schedule Programming- No Need To Copy Multiple Days. Armchair Programming Allows Removal Of Thermostat From Wall For Programming.