Informer's ALI (automatic location identification) EL display monitor is much like Informer's industry standard CRT Display used for displaying a caller's location, but has added features. The ALI EL display is an electroluminescent (EL) display and comes into two sizes, one measuring five inches diagonally and the second model measuring nine inches diagonally. Both the 9" ALI EL Display and the 5" ALI EL Display come in desktop and rack mount model.