The Main Advantage of Using an Electronic Door Locking System

question 17

Multiple Choice

The main advantage of using an electronic door locking system is

• A) easy to replace
• B) ease of employee use
• C) record of who enters the room and when
• D) more cost efficient

---

Definitions:

Input Image Table File

A file used in digital processing that contains data or parameters for images to be processed or analyzed.

Examine If Open

A programming command used in PLCs to check if a digital input or control function is in an open (inactive or off) state before proceeding with logic operations.

Examine-Off Instruction

A programmable logic controller (PLC) command used to check if a specific input or condition is not active or off.

Normally Closed Relay

A normally closed relay is a type of relay where the contact points are closed (i.e., the circuit is complete and can carry current) when the relay is not energized, and open when it is energized.