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