OLE WOLFF Offers UL217 ＆ UL1480 Compliant 520Hz Low Frequency Speakers for Smoke Detector Applications

时间： 2023-10-21 来源：OLE WOLFF News

技术问答

OLE WOLFF offers UL217 & UL1480 compliant 520Hz low frequency speakers for smoke detector applications.

The study found that half of all residential fire fatalities occur during the night when people are sleeping. The Fire Protection and Research Foundation conducted research on various populations, including children, young adults, older adults, alcohol-impaired individuals, and those who are hard of hearing, and discovered that low-frequency tones at 520 Hz are more effective at waking people up than current fire alarm signals. As a result, regulations now require audible devices in sleeping areas to emit different low frequency alarm signals.

The latest edition of UL217 for residential smoke alarm devices made many significant changes to the previously existing standard. One of the main requirements is to prevent false alarms resulting from cooking nuisance.

What OLE WOLFF offers:

· 40mm, 50mm, and 57mm diameters

· Custom sizes and acoustics available

· Low Profile

· Water resistant

· In accordance with UL217 for 520Hz low frequency sounders, meets or exceeds 79dBA, @rated power at 3.05M with square wave input.

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本文由会飞的猪猪转载自OLE WOLFF News，原文标题为:OLE WOLFF FIRE ALARMS – UL217 AND UL1480，本站所有转载文章系出于传递更多信息之目的，且明确注明来源，不希望被转载的媒体或个人可与我们联系，我们将立即进行删除处理。

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