The CDC4 is a 4-8 door & lift controller. It provides for a complete and versatile access control solution to extend the Advisor Advanced system with advanced access control functions. It provides a fully integrated real time alarm and access control for four up to eight doors or lifts, with power supply and housing. A total of 12 door/lift controllers can be connected to an Advisor Advanced panel providing for a total of 48 up to 96 full access doors. The CDC4 door/lift controller can operate off-line with no degradation in performances, should communication with the Advisor Advanced panel fail as it offers full offline operation. This combined intrusion and access solution reduces wiring and required devices as the same devices like readers and inputs can be used for both purposes.
Door and lift control can be used in one single door controller by configuring doors to lifts.

Expanders are used to expand the number of alarm inputs in an Advisor Advanced system. Expanders allow inputs and outputs/relays to be connected at a location remote from an Advisor Advanced panel. Expanders communicate via poll & reply messages. Detectors, door contacts and other detection devices are connected to expanders that report any change of state to the control panel for processing. Available expanders include support for conventional devices, wireless devices as well as intelligent addressable devices. A special expander is available providing expansion of four to eight intelligent doors or lifts.

Besides standard intrusion and access control options, the solution offers special features that are only possible due to the real combination of both. These features vary from changing security on doors when the intrusion area has disarmed, locking doors when the intrusion area arms, preventing access based on the intrusion area status or starting automatic arming when the last user has left an access control region. Special access control features include High Secure users for high secure areas like vaults, support for macro's to complement the standard features.
The lift functionality offers a solution where lift floor buttons can be controlled by access levels of users. Outputs referring to floors for that lift will switch to only allow press the button for the allowed floors.

The CDC4 has been designed with focus on security. Not only proving fully encrypted communication between the controller and management application, but also between the CDC4 controller and the Advisor Advanced panel, between the card and readers as well as between readers and the CDC4 controller or the Advisor Advanced panel. In other words, CDC4 provides communication security from card to software.

Any CDC4 can operate in two modes. Depending the mode selected the CDC4 is controlled completely through the Advisor Advanced panel providing four doors or lifts per CDC4 which is named the standard mode. In standard mode the CDC4 acts like legacy door controllers providing the same features and user data for the door controller and the Advisor Advanced panel.
In extended mode the CDC4 is also configured through the Advisor Advanced panel using the ATS8500 or ATS8550 downloader. Even in extended mode the CDC4 exchanges intrusion information with the Advanced panel. In extended mode however the CDC4 is also directly connected via IP to Advisor management for configuration of access and intrusion users while providing support of up to 8 doors or lifts per CDC4. Advisor Management sends intrusion related user data to the Advisor Advanced panel and access related data directly to the CDC4.