Controls up to 2 Stages of heat and 2 stages of colling plus auxiliary and emergency heat

Auto changeover

Large hybrid dot matrix display

Auxiliary and emergency heat indicators

EL (electro luminescent) backlight

IAQ independently programmable fan

7 day programming

Default ENERGY STAR approved program

4 periods per day

Temporary override

Hold

Vacation hold

Optional smart recovery

ENERGY STAR Compliant

Programmable filter timer with change filter indicator

Energy usage monitor

Fahrenheit or Celsius temperature display

12/24 hour clock

Easy programming with LUX Speed Dial

Advanced copy function for fast easy programming

Nonvolatile memory for all programs and settings

Daylight savings button

Multimode keyboard lockout w/ user programmable 3 Digit Code

Programmable high and low setting limits

Defeatable audible button response

Menu drivensetup done from the front panel

temperature offset (user calibration)

Dual power capable (system/battery)

Multi-stage adjustable temperature differential/cycle rate

Programmable length minimum run time

Programmable auto-changeover dead-band

Programmable fan delays for heat, cool, in both on and off

Patent # 6,988,671