Programming/Set-up
Choice of Multi-Stage or Heat Pump operation

Display
Large LCD with improved contrast for easier reading

Comfort & Convenience
Automatic changeover
Soft-touch keypad
Maintains room temperature differential within 1 degree
Display temperature recalibration (+/- 3°)

Performance
Multi-Stage (2-stage heat, 2-stage cool)
Heat Pump (2-stage heat, 1-stage cool)
Fast (FA) or slow (SL) heating cycle anticipation
B or O terminal (selectable)
Compressor lockout protection (optional)

Dimensions
5.1"W x 3.7"H x 1.1"D

Electrical Specifications
Rating 20 to 30 VAC, 50/60 Hz or DC
0.05 to 1.0 Amp (load per terminal)
1.5 Amps maximum load (all terminals combined)

Standard Systems
Multi-Stage (2-stage heat, 2-stage cool)
Heat Pump (2-stage heat, 1-stage cool)

Thermal Specifications
Setpoint Temperature Range: 45° to 90°F (7° to 32°C)
Rated Differential: 0.6° to 1.6°F with adjustable anticipation
Operating Ambient Temperature: 32° to 105°F (0° to 40°C)
Operating Humidity Range: 90% non-condensing max