UL 1480 BULLETIN-2008
商用和专业用紧急火灾报警用扬声器UL安全性标准.评议提交截止日期:2008年5月2日
UL Standard for Safety Speakers for Fire Alarm, Emergency, and Commercial and Professional Use COMMENTS DUE: May 2, 2008
- 适用范围
- Speakers for indoor and/or outdoor use in dry, damp, wet, or underwater location and are intended for one or more of the following: Fire alarm systems providing emergency voice/alarm occupant notification; commercial and professional audio systems providing non-emergency sound reinforcement and reproduction (this includes equipment for institutional, industrial use); Non-fire emergency voice-warning systems; and underwater speakers.