Excluding portable wireless transmitters, removal of an RF transmitter from the system shall generate what?

• A. A local fault light
• B. No change
• C. An alarm
• D. A system-wide supervisory signal

Answer: (D)

Supervision of monitored devices is how the system knows every transmitter is still present and communicating with the panel. For fixed RF transmitters that are part of the installation, the panel expects ongoing contact. If one is removed, the panel can’t hear from that device anymore, and it flags a supervisory condition. That condition is then sent to the monitoring station as a system-wide supervisory signal, signaling a loss of supervision rather than an active alarm.

So the removal triggers a supervisory status across the system to alert that a supervised device is no longer communicating. It’s not a local fault light or an actual intruder/fire alarm, and it’s not a “no change” situation. Portable wireless transmitters are excluded here, but for fixed, supervised transmitters, removal results in the system-wide supervisory signal.