UL 539-1991
Single and multiple station heat detectors

Standard No.

UL 539-1991

Release Date

1991

Published By

Underwriters Laboratories (UL)

Status

Be replaced 1998-08

Replace By

UL 539-1995

Latest

UL 539-2022

UL 539-1991 history

• 1970 UL 539-2022
• 2018 UL 539 BULLETIN-2018 UL Standard for Safety Single and Multiple Station Heat Alarms (COMMENTS DUE: May 14@ 2018)
• 2017 UL 539 BULLETIN-2017 UL Standard for Safety Single and Multiple Station Heat Alarms (COMMENTS DUE: March 27@ 2017)
• 2017 UL 539-2017 UL Standard for Safety Single and Multiple Station Heat Alarms (Seventh Edition)
• 2016 UL 539 CRD-2016 UL Standard for Safety Single and Multiple Station Heat Alarms - Section / Paragraph Reference: New Section 31A Subject: Rate of Rise Operation Test (Edition 6: January 30@ 2009)
• 2016 UL 539 BULLETIN-2016 UL Standard for Safety Single and Multiple Station Heat Alarms (COMMENTS DUE: OCTOBER 31@ 2016)
• 2014 UL 539 BULLETIN-2014 UL Standard for Safety Single and Multiple Station Heat Alarms (COMMENTS DUE: MARCH 17@ 2014)
• 2009 UL 539-2009 UL Standard for Safety Single and Multiple Station Heat Alarms (Sixth Edition; Reprint with revisions through and including December 23@ 2014)
• 2008 UL 539 BULLETIN-2008 UL Standard for Safety Single and Multiple Station Heat Detectors (COMMENTS DUE: June 09@ 2008)
• 2005 UL 539 BULLETIN-2005 UL Standard for Safety Single and Multiple Station Heat Alarms
• 2000 UL 539-2000 UL Standard for Safety Single and Multiple Station Heat Detectors (Fifth Edition)
• 1995 UL 539-1995 UL Standard for Safety Single and Multiple Station Heat Detectors (Fourth Edition)
• 1991 UL 539-1991 Single and multiple station heat detectors