CML Security Systems Installation & Maintenance 2

Question 1

When installing a door contact sensor for an alarm system, where should the magnet component be mounted?

Accepted Answer

On the moving door or window

Answer

The magnet is mounted on the moving door or window while the sensor switch is mounted on the fixed frame, so movement separates them and triggers the alarm.

Question 2

A customer reports their access control card reader beeps twice but does not unlock the door. What is the most likely cause?

Accepted Answer

The credential is valid but access is denied by schedule or permission settings

Answer

Two beeps on most systems indicate the card was read successfully but access was denied due to time schedule restrictions or insufficient access level permissions.

Question 3

Which wire gauge is most commonly specified for low-voltage alarm system wiring runs up to 500 feet?

Accepted Answer

22 AWG

Answer

22 AWG is the industry standard for most alarm sensor wiring over typical residential and commercial distances up to 500 feet.

Question 4

What does EOL (End of Line) resistor supervision in an alarm loop detect?

Accepted Answer

Both open circuit (cut wire) and short circuit (wire bridging) tamper conditions

Answer

EOL resistors allow the panel to monitor the loop for both opens (tamper/break) and shorts (defeat attempt) by measuring the resistance value of the circuit.

Question 5

A glass break detector is being installed in a room with heavy drapes. Where should it be positioned for best performance?

Accepted Answer

On the ceiling or wall with a clear acoustic path to the protected glass

Answer

Glass break detectors rely on acoustic sensing and must have an unobstructed sound path to the glass; drapes and other soft materials absorb the high-frequency break sound.

(CML) Certified Master Locksmith Practice Test

(CML) Certified Master Locksmith Practice Test

CML Security Systems Installation & Maintenance 2