​Low Frequency (520 Hz) Sounders

The SpectrAlert®​ Advance low frequency sounders meet the new NFPA 72® 2010/2013 low frequency (520 Hz) requirements effective January 1, 2014 for sleeping spaces. They include a universal mounting plate with a plug-in design, two sound patterns, 24-volt operation, and are compatible with the System Sensor synchronization protocol.​

Select a product to view images and additional details about that model.



No discontinued products found.

  • Discontinued Model Product Manual Data Sheet Replacement Model