The CDC-2DWIF is a two door Wiegand Interface that offers two Wiegand interfaces to connect two readers, two relays to control two doors, and 4 inputs to connect door contacts and request-to-exit buttons, or intrusion sensors. All are controlled via the CDC4 elevator / door controller. The unit will be polled as an expander / DGP on the RS485 data bus. Readers, relays, and Wiegand inputs can be assigned to any door or sent directly to the Advisor Advanced control panel when required. Using the readers, the intrusion areas can be armed / disarmed using the same options as for all other doors on the CDC4.