Silent Knight 6820EVSBD Emergency Voice System Replacement Board.

Compliance

• UL Listed
• UL 864
• UL 2572
• NFPA 72

Key features

• Replacement printed circuit board for the Silent Knight 6820EVS combined FACP/EVS panel
• Restores fire alarm and emergency voice system control functions to original specification
• UL 864 listed for fire alarm and UL 2572 listed for emergency communications applications
• Designed for use within the 6820EVS panel enclosure as a field-serviceable component
• Compatible with SK protocol SLC for addressable field devices

The 6820EVSBD is a replacement board for the Silent Knight 6820EVS combined fire alarm and emergency voice system control panel (a Honeywell brand). The 6820EVS integrates fire alarm detection and voice evacuation functions in one chassis; the EVSBD board provides the panel-level circuitry that processes alarm signals, drives speaker amplifier outputs, and manages emergency announcement sequencing. Replacement boards restore the original UL 864 and UL 2572 dual-listed configuration after field service. Reference the 6820EVSBD compatibility guide in the panel service manual to confirm panel revision before ordering.

Verify panel/device family compatibility before ordering.