Ring Volume Controller

The RVC – Ring Volume Controller provides local audio control within a 100 V return-loop loudspeaker system without compromising Voice Alarm integrity.
During normal operation, it allows background music playback and local volume adjustment for up to three loudspeaker groups.
When an emergency message or evacuation signal is triggered, the local audio source is automatically overridden, and the priority message is delivered clearly and without delay.

Using pilot-tone based control, the RVC ensures reliable priority switching and loop continuity, maintaining full compliance with Voice Alarm system requirements.
Its compact in-line installation makes it suitable for integration between loudspeaker groups in commercial, hospitality, education and public buildings where user comfort and life-safety coexist.