The Cooper Wheelock SAFEPATH4 SP‑SVC Supervised Volume Control is used with the SP40/2 or SP40S Facility Communications Systems along with the SPB‑80/4, SPB‑160, or SPB‑320 Audio Power Boosters to control the volume of a single speaker, multiple speakers, or an entire audio loop up to 35 W. An integrated override relay bypasses the volume attenuator in alarm conditions allowing the emergency notification message to be announced at maximum volume.
Features:
- Compatible with UL864 Listed 24 V supervised notification appliance circuits (NACs)
- Compatible with Class B wiring, and with Class A wiring when used with the SP4‑APS Addressable Paging Splitter
- Adjustment settings (0 to 10) in 3 dB increments
- Selected adjustment does not affect volume setting of pre-recorded emergency messages or live microphone usage
