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Edwards Signaling KM Series horns are the finest and most reliable air horns on the market for very large area coverage. They were developed and proven to meet the most exacting demands of the industrial and commercial trades. The horns generate sound by means of a vibrating diaphragm that modulates the flow of compressed air into a resonating projector. All horn shapes are mathematically calculated to amplify sound while closely retaining its fundamental frequency and natural harmonics. The signal is designed so that moisture naturally drains away from the diaphragm seat. Excellent for pole or roof top installation. Particularly useful for commanding attention to emergency situations in very large areas. Designed for mounting on air supply piping, supplying between 50 and 150 PSIG (3.5 and 10.5 kg/sq cm).
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