Standard Features - Pre-occupancy purge and/or programmable fan - Economizer/damper control output - Remote sensing indoor and at the thermostat - Keypad lockout total or partial - Limited temperature range energy-saving feature - Large, 12-square-inch or 6-square-inch display with backlight - Exclusive Cool Savings feature saves energy during peak A/C demand periods - Automatic daylight savings option - 12-Square Inch Blue Touchscreen Display - Stages: Heat Pump, 4 Heat / 2 Cool; Multi-Stage 2 Heat / 2 Cool - 7-Day or 5+1+1 Day Programmable or Non-Programmable - 1 or 0 Program Periods per Day - Programmable Fan and Remote Sense Capable - For 24 VAC or Millivolt Systems - 3-Wire Zone Valve - Tri-Powered - Hardwired, Battery Powered or Power Stealing Battery Assist