Wheelock Panels

SP4‑RMX Remote Microphone Expansion Module
  • Expands one remote microphone (SPRM) from the SP40/2 or SP40S control panel to three
  • Provides one line level, 600 Ω auxiliary audio output
  • Provides up to six remote microphones when using two SP4‑RMX modules
  • Provides multiple on‑board diagnostics with three status conditions: standby, alarm, and trouble
  • Operates on 24 VDC supplied by the SP40/2 or SP40S control panel
SP‑SVC Supervised Volume Control
  • 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
  • Maximum RMS current of 10 mA

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