System Sensor launched low-frequency notification appliances that meet the NFPA 72 requirements for all commercial sleeping spaces that begin in 2014. For people living in states and regions that have adopted the 2010 or 2013 edition of NFPA 72, all new commercial sleeping spaces will be required to utilize an audible device that produces a low-frequency tone centered around 520 Hz effective January 1, 2014. The SpectrAlert Advance low-frequency notification appliances include sounders and sounder strobes that integrate directly with fire alarm control panels.

 System Sensor | www.systemsensor.com/lowfrequency