Low Frequency Smoke Alarms required Older technology does not meet current code standards. It may work although it does not meet the 2021 IBC code. Read More Contractors, Commercial, Electrical ContractorsLarry LoveJanuary 23, 2025Johnson Controls Fire Protection LPlow frequency, 120v smoke, Smoke Alarms, Smoke Detectors, LF Horn, Low Frequency sounder, Low Frequency, 2021 IBC, NFPA 72, R710, Utah, Salt Lake City, Larry Love, Johnson Controls Fire Protection, 120V Smoke Alarm, Kidde, BRK, Alula, Gentex, First Alert, Addressable NAC, Addressable Horn Strobes, Addressable Horns, Addressable Speakers, Addressable Speaker Strobes, Addressable strobes, Addressable Low Frequency, Hotes, Hotels, Models, Residential, R1, R2, R-1, R-2, Electrical Engineer, Spectrum, BNA, Heath, ECEComment