FEATURES 5-2 programming with automatic heat/cool system changeover. Pushbutton Backlight Temporary Program Override Indefinite Program Hold Adjustable Temperature Display Programmable Fan Control Programmable Vacation Time/Temperature Operation Keypad Lockout Thermostat Startup up After Power Loss Up to 4 Digital-signal sensing locations with up to 3 remote indoor sensors plus thermostat. Also displays outdoor temperature with optional outdoor sensor. Temperature sensing can be averaged or weighted by sensor location. Compressor Short Cycle Protection System and Thermostat Diagnostics Humidifier Maintenance Indicator Air Filter Change-Out Indicator UV Bulb Replacement Indicator Adjustable Humidity Display Programmable Automatic Humidity Reduction Humidifier Control and Monitoring