Models 55 and 56 are electric horns that produce sound by means of a diaphragm, which resonates a column of air. With greater output than a vibrating horn, the resonating horn can be used wherever a louder, more powerful alert is needed. These projectors are designed to match the frequency of the vibrating diaphragm to produce a smooth tone. The housings are tapped for 1/2 in conduit. Models 55 and 56 have sufficient output to penetrate through high ambient noise levels and have a duty cycle of 5 min ON, 5 min OFF.

Federal Signal Resonating Horn, Electric, Series: 56 Series, 250 VDC, 0.25 A, 116/106 dB, Indoor/Outdoor: Indoor/Outdoor, Specifications Met: ARRA Compliant|BAA Compliant|cUL Listed|UL Listed|CSFM Approved, -35 to 150 deg F Operating, Cast Aluminum/Spun Brass, Gray, 19-3/4 in L x 8 in W x 8 in H

• Resonated column of air generates sound
• Corrosion-resistant cast aluminum housing and spun brass projector
• Model 56 produces 106 dBA at 10 ft
• Weatherproof, water and dust tight
• Gray enamel paint coating

• Specification Sheet https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/IDW_DOCUMENT_1fc7af4d3f6a0360900be93d1ac894d32617b1ad4c3584be767741ebca4b97e2.pdf
• Warranty Information https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/IDW_DOCUMENT_7efe597170cfafef0ac1281e9c280a87c26b03787e7065fb8d691fd6eb241015.pdf