Arizona Drivers Permit Practice Exam Guide

What is the primary function of an End-of-Line (EOL) resistor in a security or fire alarm circuit?

To increase the voltage to the final device To terminate the circuit and allow the panel to monitor wiring integrity (supervision) To prevent power surges from damaging the panel To act as a backup power supply

Correct Answer:

To terminate the circuit and allow the panel to monitor wiring integrity (supervision)

Explanation:

EOL resistors provide a specific resistance that the panel monitors. If the wire is cut or shorted, the resistance changes, triggering a trouble signal.

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