Low frequency sounder base, Designed to meet the NFPA 72 sleeping space requirement to produce a fundamental frequency of 520 Hz +/– 10% with a square wave or its equivalent. Studies show that a lower frequency, centered around 520 Hz, is the most ideal to awaken sleeping occupants, ven those with mild to severe hearing loss.
New
SYSTEM SENSOR, MIRCOM APB200-LF SOUNDER BASE
$60.00
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