The SpectrAlert Advance series offers the most versatile and easy-to-use line of low frequency sounder and low frequency sounder strobes in the industry. SpectrAlert Advance can meet virtually any application requirement with white and red plastic housings and dual listed for wall and ceiling mounting.
The wall-mount low-frequency sounder and low-frequency sounder strobes were designed to address the NFPA 72 sleeping space requirements, which require a low-frequency notification appliance that operates within the frequency range of 520 Hz ± 10% and is of a square wave tone.