UL - 1480 BULLETIN
UL Standard for Safety Speakers for Fire Alarm, Emergency, and Commercial and Professional Use
|Publication Date:||18 November 2016|
Proposes new Clause 1.7.1 (regarding installations requiring low frequency notifications) to the scope of the standard. Abnormal operation and burnout test -
Revisions to Clause 7.11 are being proposed to resolve the binational differences between Canada and the United States and to insert any missing requirements that were accidentally omitted during the creation of the binational document.
Mechanical Strength Tests for Enclosures -