Industrial 5120-9311 Volume Control Station Fire Alarm

The Industrial 5120-9311 Volume Control Station (VC114) is a commercial-grade device used in fire alarm and emergency voice evacuation systems to provide local volume adjustment for speakers on supervised audio circuits. It is commonly installed in commercial buildings, schools, hospitals, office complexes, and industrial facilities equipped with voice evacuation and fire alarm systems, allowing occupants or authorized personnel to adjust speaker output while maintaining supervision compliance. Key specs include 10 W audio power, 11 positions plus OFF, an Autoformer transformer, a single-gang metal enclosure for flush-mount installation, and a supervised speaker circuit design with frequency response tailored to voice and emergency audio applications. Manufacturer Part Number 5120-9311, Alternate Part Number 0688142, Model VC114; common replacements include Wheelock VSPK Volume Control Station, Edwards SIGA-CC1 Audio Control Module, and Siemens UMMT Voice System Volume Control. It is used by maintenance teams, fire alarm contractors, and system integrators for expansions, retrofits, and replacement of damaged or obsolete audio control components.