The Hochiki HCVR-AB Ancillary Board is an option that may be used with the HCVR-3 conventional releasing fire alarm control panel. The HCVR-AB provides outputs that indicate the status of the HCVR-3 panel. The HCVR-AB is commonly used to interface the HCVR-3 conventional releasing control panel with other systems. 

STANDARD FEATURES
• Compatible with all versions of the HCVR-3
• Up to 7 HCVR-AB may be used with one HCVR-3 control panel (if no HCVR-SDU are used)
• Terminals accept 22 to 14 AWG
• Requires 24VDC and RS485 from the HCVR-3 control panel
• Relay Rating - 30VDC @ 1A maximum
• Current requirements - 16mA standby, 175mA maximum