What is Controller (Access Control)?

An access controller is the main decision-making unit in an access control system. It receives data from input devices such as card readers, biometric scanners, keypads, or fire alarms and checks this information against programmed access rules. Based on this verification, the controller decides whether to grant or deny access and then sends commands to door locks, turnstiles, or exit devices.

Access controllers have varying capacities to handle different numbers of entry points. High-capacity devices are used in large spaces where they can handle access to numerous doors. It is a single unit that helps control and improve the security of a large place from a central point. These devices can help verify credentials, customize access for a user, and allow or deny entry in real-time. Moreover, they are designed to be integrated with other security systems, like CCTV, to improve security.