A wireless alarm signal repeater is:

• A. Jams nearby wireless signals.
• B. Replaces the original transmitter.
• C. Is powered only by a battery.
• D. Extends the range of a wireless transmitter, amplifies the signal, transmits and retransmits; helps reduce false alarms; usually AC powered.

Answer: (D)

A wireless alarm signal repeater serves to extend the coverage and reliability of a wireless system. It works by receiving the original transmitter’s signal, boosting its strength, and retransmitting it further, so sensors or a central panel can hear the message even from distant or obstructed areas. This helps reduce missed alarms and false alarms caused by weak or dropped signals, because the signal remains strong and consistent over a larger area. Repeating devices are typically powered from standard AC power with a battery backup, ensuring they stay online even during power interruptions. They don’t jam signals, nor do they replace the original transmitter; their job is to amplify and retransmit to broaden the system’s reach.