Security Systems & Electronic Access Flashcards

Which fire-code principle applies to doors with magnetic locks on egress paths in most U.S. jurisdictions?

Answer: They must release upon fire alarm and allow free egress

Egress doors must unlock on fire alarm and permit free egress without special knowledge.

A 'delayed egress' lock, where permitted by code, typically does what?

Answer: Releases after a short delay (commonly 15 seconds) following a sounding alarm

Delayed egress devices hold the door briefly with an alarm, then release; the delay is usually up to 15 seconds in many jurisdictions.

Which electric strike type holds the door locked when power is removed?

Answer: Fail-secure

A fail-secure strike stays locked when de-energized and releases when power is applied.

Which device on a panic bar door allows electric dogging or remote unlocking of the outside trim?

Answer: Electric latch retraction or electrified trim

Electrified trim or electric latch retraction controls outside access while the bar always permits free exit.

ADA-related hardware requirements for accessible doors generally call for operable parts that:

Answer: Can be operated with one hand without tight grasping, pinching or twisting

ADA standards require hardware operable with one hand and without tight grasping, pinching or twisting of the wrist.

What is the typical purpose of a Request-to-Enter or buzzer/intercom system at an entry?

Answer: To let an occupant visually or audibly verify a visitor before releasing the door remotely

Intercoms let occupants verify visitors and release the lock remotely.

Where should a card reader typically be mounted relative to the door for accessible use?

Answer: Within reach range, commonly about 36–48 inches above the floor

Readers are usually mounted within the ADA reach range, around 36 to 48 inches above the floor.