Access Control Systems Flashcards

UL 294 is the standard that applies to which access control component?

Answer: Access control system units (panels, readers, software)

UL 294 is the Standard for Access Control System Units, covering panels, readers, and related electronic access control equipment.

In an access control system, what is the function of the door position switch (DPS)?

Answer: To monitor whether the door is open or closed and report its status to the access control panel

The door position switch (typically a magnetic reed switch) continuously monitors door open/close status and reports it to the controller for alarm and audit trail purposes.

Which credential technology provides the highest level of security due to encryption and mutual authentication between the card and reader?

Answer: Smart card (13.56 MHz with encryption, e.g., HID iCLASS SE)

Modern 13.56 MHz smart cards (like HID iCLASS SE/Seos) use encryption and mutual authentication, making them far more resistant to cloning than proximity or mag stripe cards.

What does 'anti-passback' mean in an access control system?

Answer: A rule preventing a credential from being used to enter the same zone twice in a row without first exiting

Anti-passback prevents a credential from granting re-entry to a zone until that credential has been used to exit, stopping card sharing and unauthorized re-entry.

Which power supply consideration is critical when installing a fail-safe magnetic lock on a fire egress door?

Answer: The lock must release (de-energize) on fire alarm activation

Per life-safety codes, fail-safe maglocks on fire egress doors must be integrated with the fire alarm system to release (de-energize and unlock) when the fire alarm activates.

What is the primary function of an access control 'time zone' or 'schedule' setting?

Answer: To restrict when a credential is valid, allowing access only during defined hours or days

Time zones define the hours and days when a credential is permitted to grant access, enabling different access schedules for different users or groups.