The DKS 1500 series family of keypads provides access control for virtually any application where digital code entry is desired and they are available for stand-alone applications or for connection to an access controller. These vandal resistant keypads (except 1509) use stainless steel faceplates, galvanized steel sub-plates and are housed in a rugged steel cabinet. The 1515 is available in surface mount style only while the 1506 series keypad is available in surface or flush mount styles. The 1504 model adds an intercom substation to the 1506 series allowing voice communication via connection to a master intercom station. Lighted keypad models available for easy night time operation.