What is the term used when installing smoke detectors, so when one goes off they all go off?

• A. Interconnecting
• B. Networking
• C. Syncing
• D. Pairing

Answer: (A)

Interconnecting smoke detectors means wiring multiple units so they share an alarm signal. When one detector senses smoke, it sends a signal through the interconnect path to all the other connected detectors, so they all sound together. This setup is common in hard-wired systems that use a dedicated interconnect conductor (often the red wire) to carry the alarm signal. Other terms like networking or syncing can imply different kinds of coordination or data sharing, and pairing usually refers to wireless connections, not the standard hard-wired alarm circuit. So the term that describes this all-at-once alert system is interconnecting.