2001UL 1409 BULLETIN-2001 UL Standard for Safety Pilot-Operated Pressure-Control Valves for Fire-Protection Service
1997UL 1409-1997 UL Standard for Safety Low-Voltage Video Products without Cathode-Ray-Tube Displays (Fourth Edition)
1986UL 1409-1986 UL Standard for Safety Low-Voltage Video Products Without Cathode-Ray-Tube Displays (Third Edition; Reprint with Revisions Through and Including September 12@ 1991)