DoorKing 1833 PC Programmable Telephone Entry Learn More About The New Features In The 1830 Gate Entry Lineup - Anti pass back can be programmed in different modes for complete control into and out of secured areas - Stainless steel plate and anti-vandal features protects all internal parts - Pc programmable via the internet (using DKS servers), modem, or RS-232 interface - Modular design makes installation and service easy The DKS 1833 is an ideal telephone entry and access control system that is suited for applications that do not require a directory or in applications where a separate directory exists. The easy to use Remote Account Manager programming software, card reader interface and expandability options make this unit an ideal choice for those applications with a large number of system users and entry locations. Up to 16 card readers can be interfaced with the 1833 to provide access control. Additionally, our elevator control module restricts which floors a guest or system users have access to, making it an ideal system for high rise buildings. For additional security, the Doorking 1833 allows you to monitor activity AS IT HAPPENS on your computer display and with our anti-pass back memory, you can enable a TRUE anti-pass back system in one of three different configurations; passive, active and trap.