In barrier devices, which component is the actual lock activated electronically?

In barrier devices, which component is the actual lock activated electronically?

• A. Closing mechanism
• B. Electrically activated lock
• C. Computerized control
• D. Sensors

Answer: (B)

The key idea is that security in barrier devices is achieved by an electronic locking element. The barrier’s closing mechanism moves the barrier into place, but the actual act of securing it—so it can’t be moved or bypassed—is done by the lock that is energized by electricity. The control system decides when to lock or unlock and sends the electrical signal to this lock, while sensors provide status and safety checks to the control. So the component that physically secures the barrier when commanded is the electronically activated lock.

The key idea is that security in barrier devices is achieved by an electronic locking element. The barrier’s closing mechanism moves the barrier into place, but the actual act of securing it—so it can’t be moved or bypassed—is done by the lock that is energized by electricity. The control system decides when to lock or unlock and sends the electrical signal to this lock, while sensors provide status and safety checks to the control. So the component that physically secures the barrier when commanded is the electronically activated lock.