UL-1641 › Complete Document History
Standard for Installation and Classification of Residential Burglar Alarm Systems

Complete Current Edition:
   5TH EDITION - Standard for Installation and Classification of Residential - Jan. 26, 2015
   CHANGE 05/20 - REVISION CHANGE - CODE B - May 20, 2020

Obsolete Revision Information:
   CHANGE 06/10 - REVISION CHANGE - CODE A - June 3, 2010
   CHANGE 03/05 - REVISION CHANGE - CODE A - March 31, 2005
   4TH EDITION - INSTALLATION & CLASSIFICATION - Feb. 19, 1999
   3RD EDITION - INSTALLATION & CLASSIFICATION - Jan. 1, 1994
   1989 EDITION - INSTALLATION & CLASSIFICATION - April 21, 1989