UL 521 BULLETIN

UL Standard for Safety Heat Detectors for Fire Protective Signaling Systems - COMMENTS DUE: FEBRUARY 18, 2008

contributor author	UL - UL
date accessioned	2017-09-04T18:45:26Z
date available	2017-09-04T18:45:26Z
date copyright	01/18/2008
date issued	2008
identifier other	KHDZBCAAAAAAAAAA.pdf
identifier uri	http://yse.yabesh.ir/std/handle/yse/226823
description abstract	These requirements cover heat detectors for fire protective signaling systems intended to be installed in ordinary indoor and outdoor locations in accordance with the Standard for Automatic Fire Detectors, NFPA 72E. Heat detectors covered by these requirements employ either normally open contacts or normally closed contacts, provide an electronic signal, or consist of a heat-sensitive cable. The requirements do not cover heat detectors for journal-alarm or unit-alarm devices. Deleted October 3, 2002
language	English
title	UL 521 BULLETIN	num
title	UL Standard for Safety Heat Detectors for Fire Protective Signaling Systems - COMMENTS DUE: FEBRUARY 18, 2008	en
type	standard
page	92
status	Active
tree	UL - UL:;2008
contenttype	fulltext