Doorking 1520 Card Readers and Proximity Card Readers The model 1520 provides users with a full feature single door stand-alone access control system. The 1520 is available with a built-in proximity card reader or can be ordered as a single door controller allowing the user to add their own 26-bit access control device. The 1520 is available in two configurations: with a built-in card reader or as a single door controller only. Contact your professional DKS system installer for more information about this and other DKS products.. Models 1510, 1512 and 1520 provide users with a single door stand-alone card access control system. The 1510 and 1512 use "touch-plate" reader technology and are easily programmed by means of a programming card deck. 1520 uses proximity card reader technology. They feature a built-in programming keypad. These card readers offer outstanding control features typically not found in a stand-alone card access systems. Standard cards are credit card size. Key tags are designed to fit on a key ring or chain. Optional printer interfaces with 1512 and can report transactions in real time.