Features: 4 sq. inch display Blue backlight Glow in the dark light button Easy access battery compartment Electric or Gas configurable Separate B & O terminals Separate heating and cooling swing (cycle rate) adjustments including 2nd stage adjustments Filter change indicator (selectable on or off) Room temperature calibration adjustment 5 minute compressor delay protection (selectable on or off) Simple private label badge system Easy wire color coded terminal blocks Universal sub-base Mounts on wall or junction box Battery or 24v power