When a correct access code is entered on a stand-alone electronic keypad, what is released?

When a correct access code is entered on a stand-alone electronic keypad, what is released?

• A. Door opens automatically
• B. A relay is triggered
• C. Alarm sounds
• D. Access log is updated

Answer: (B)

When a correct code is entered on a stand-alone electronic keypad, the keypad validates the code locally and energizes an output relay that drives the door lock (electric strike or magnetic lock). This relay release unlocks the door, allowing the user to open it with a push or pull. The door doesn’t automatically swing open on its own after a valid code, and alarms aren’t triggered simply for a correct entry. Some systems may log access, but the essential action is energizing the relay to release the lock.

When a correct code is entered on a stand-alone electronic keypad, the keypad validates the code locally and energizes an output relay that drives the door lock (electric strike or magnetic lock). This relay release unlocks the door, allowing the user to open it with a push or pull. The door doesn’t automatically swing open on its own after a valid code, and alarms aren’t triggered simply for a correct entry. Some systems may log access, but the essential action is energizing the relay to release the lock.