In your facility, you use both the X-10 lock and the CDX-10 lock. What is the difference between the two?

• A. The X-10 lock is for use on security containers and the CDX-10 lock is for use on vaults and doors.
• B. The X-10 lock is for use on vaults and the CDX-10 lock is for use on security containers.
• C. They are interchangeable.
• D. X-10 is electronic; CDX-10 is mechanical.

Answer: (C)

Interchangeability is the key idea. X-10 and CDX-10 are designed to fit the same openings, sharing the same mounting footprint, keying interface, and operating mechanism. Because of that, you can swap one for the other without changing hardware, keying, or installation procedures. The difference isn’t in where they’re used or how they operate—the two are compatible enough to be used on the same applications as needed.