{"product_id":"potter-lfh-24w-low-frequency-horn-520-hz-temporal-3-off-white","title":"Potter LFH-24W Low Frequency Horn, 520 Hz Temporal 3, Off-White","description":"\u003cp\u003eThe \u003cstrong\u003ePotter LFH-24W\u003c\/strong\u003e is a 520 Hz low frequency sounder with an off-white faceplate. NFPA 72 calls for 520 Hz low frequency signaling in sleeping rooms, because this square-wave tone wakes sleeping occupants much more reliably than a standard high-pitched horn. The LFH sounds it in a temporal 3 pattern.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e520 Hz square wave, temporal 3; temporal 4 available only with a Potter GTSM module\u003c\/li\u003e\n\u003cli\u003eNormal and loud output settings\u003c\/li\u003e\n\u003cli\u003eRuns on direct current or full-wave rectified power\u003c\/li\u003e\n\u003cli\u003eSuper-Slide bracket mounts to 4 in. square and gang boxes\u003c\/li\u003e\n\u003cli\u003eListed to ANSI\/UL 464 and CAN\/ULC S525\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eLFH-24W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eOff-white\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency\u003c\/td\u003e\n\u003ctd\u003e520 Hz square wave\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePatterns\u003c\/td\u003e\n\u003ctd\u003eTemporal 3; temporal 4 with GTSM module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput (UL 464, 10 ft, reverberant, temporal 3)\u003c\/td\u003e\n\u003ctd\u003e77.8 dBA normal, 79.8 dBA loud\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003e24 VDC nominal, 16 to 33 V range, DC or full-wave rectified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax current (regulated 24 VDC, temporal 3)\u003c\/td\u003e\n\u003ctd\u003e99.4 mA normal, 155.8 mA loud\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temperature\u003c\/td\u003e\n\u003ctd\u003e32 to 120 °F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWire size\u003c\/td\u003e\n\u003ctd\u003e18 to 12 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e6-1\/8 x 5-1\/2 x 1-5\/8 in.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eSuper-Slide bracket; 4 in. square and gang boxes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eListings\u003c\/td\u003e\n\u003ctd\u003eANSI\/UL 464, CAN\/ULC S525\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eOrdering note\u003c\/h3\u003e\u003cp\u003eThe LFH-24R is the same sounder in red, and the LFHS-24 series adds a strobe. The 88.3 dBA figure that appears in Potter specification wording is the CAN\/ULC anechoic rating at 3 m on the loud setting (per the installation manual), not the UL 464 value listed above.\u003c\/p\u003e","brand":"Potter","offers":[{"title":"Default Title","offer_id":68073090285781,"sku":"LFH-24W","price":52.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0698\/5826\/3253\/files\/potter-horns-default-title-potter-lfh-24w-low-frequency-horn-31896919245024.jpg?v=1793582876","url":"https:\/\/fireservicesgroup.com\/products\/potter-lfh-24w-low-frequency-horn-520-hz-temporal-3-off-white","provider":"FSG - Fire Services Group","version":"1.0","type":"link"}