4 sq. inch display;Blue backlight;Glow in the dark light button;Easy access battery compartment;Electric or Gas configurable;Seperate heating and cooling swing (cycle rate) adjustments;Room temperature calibration adjustments;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;24v power;5 year warranty