The Paradox K35 is a 32-zone LCD keypad Compatible with MG5000, MG5050 and Spectra SP series V2.31 control panels. It features Paradox's innovative key light display, in which the keypad buttons light up to display various information. For example, an open zone will be indicated by the keypad number being illuminated which corresponding to the zone number. The trouble and memory buttons illuminate to indicate information available. The keypad comes with a cover that flips over the keypad buttons, when closed the keypad is very inconspicuous.