UL-294 Complete Document History
Standard for Access Control System Units

Complete Current Edition:
   8TH EDITION - Safety Access Control System Units - May 24, 2023

Obsolete Revision Information:
   CHANGE 10/18 - REVISION CHANGE - CODE B - Oct. 8, 2018
   7TH EDITION - Safety Access Control System Units - Jan. 31, 2018
   CHANGE 02/15 - REVISION CHANGE - CODE B - Feb. 2, 2015
   6TH EDITION - Standard for Access Control System Units - May 10, 2013
   CHANGE 09/10 - REVISION CHANGE - CODE A - Sept. 17, 2010
   CHANGE 08/09 - REVISION CHANGE - CODE A - Aug. 14, 2009
   CHANGE 08/05 - REVISION CHANGE - CODE A - Aug. 15, 2005
   CHANGE 10/01 - REVISION CHANGE - CODE A - Oct. 29, 2001
   5TH EDITION - ACCESS CONTROL SYSTEMS UNITS - Jan. 29, 1999
   CHANGE 05/95 - ACCESS CONTROL SYSTEMS UNITS - May 1, 1995
   CHANGE 07/94 - ACCESS CONTROL SYSTEMS UNITS - July 1, 1994
   4TH EDITION - ACCESS CONTROL SYSTEMS UNITS - June 30, 1994
   CHANGE 05/91 - ACCESS CONTROL SYSTEMS UNITS - May 22, 1991
   CHANGE 05/88 - ACCESS CONTROL SYSTEMS UNITS - May 11, 1988
   ERRATUM 4/87 - ACCESS CONTROL SYSTEMS UNITS - April 27, 1987
   CHANGE 01/87 - ACCESS CONTROL SYSTEMS UNITS - Jan. 17, 1987
   1987 EDITION - ACCESS CONTROL SYSTEMS UNITS - Jan. 16, 1987