Tag: Rebecca Peterson

LAS VEGAS—When a fire alarm activates during a fire, the high-frequency sound it emits can be insufficient to alert some hearing impaired individuals or even just sound sleepers. But System Sensor has some new low frequency notification appliances that address that problem because they're easier for such people to hear, according to David George, the company's director of marketing communications.The low frequency sounders and sounder strobes, which were among products the St. Charles, Ill.-based...