SpectrAlert® Advance HR-LF Selectable-Output Low Frequency Sounder 

SpectrAlert® Advance HR-LF Selectable-Output Low Frequency Sounders are red, two-wire, 12/24V, low frequency sounders for wall or ceiling installation. These sounders are designed to address the NFPA 72 sleeping space requirements that require a low frequency notification appliance that operates within frequency range of 520 Hz ± 10% and is of a square wave tone. These devices feature plug-in designs with minimal intrusion into the back box, making installations fast and foolproof while virtually eliminating costly and time-consuming ground faults.

Certifications:

• UL Listed: S4011

• MEA Listed: MEA452-05-E

• FM Approved: 3047563

• CSFM: 7135-1653:0223; 7125-1653:0224

• UL Listed: S4011
• MEA Listed: MEA452-05-E
• FM Approved: 3047563
• CSFM: 7135-1653:0223; 7125-1653:0224