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.