Product Description Universal 5/1/1 or 7 Day Programmable Thermostat with Damper Control Output and Keypad Lockout Single Stage / Multi-Stage / Heat Pump Product Features: 6-square-inch display Lock feature secures thermostat to subbase, reduces tampering Dual fuel with outdoor sensor option Pre-occupancy purge and/or programmable fan Economizer/damper control output Remote sensing indoor and at the thermostat Display with backlight Energy savings up to 33% due to the Exclusive Cool Savings feature that saves energy during peak A/C demand periods Automatic daylight savings option