ANSI/UL 521-2010
Heat Detectors for Fire Protective Signaling Systems

Standard No.

ANSI/UL 521-2010

Release Date

2010

Published By

American National Standards Institute （ANSI)

Latest

ANSI/UL 521-2010

Scope

Revision to proposal dated August 14, 2009

ANSI/UL 521-2010 history

• 2010 ANSI/UL 521-2010 Heat Detectors for Fire Protective Signaling Systems