K-3 Directional, Single Tone Industrial Air Horn *EFFECTIVE OUTDOOR COVERAGE OF UP TO 2.5 KILOMETERS Single tone, 470 Hz fundamental frequency, engineered to produce full harmonic contents up to 12 octaves which greatly enhance warning effectiveness Horn is energy efficient with hermetically sealed diaphragm assembly which operates on a side range of pressure without tuning or adjustment. Horn construction: High strength aluminum casting, stainless steel diaphragm discs and fasteners. Operating medium: 11 L/Sec [24 SCFM] at 7 bars [100 PSIG] Manual, Solenoid or Combination valve Signal will produce a sound pressure level of approximately 70 dB @ 2.5 km in calm, cool conditions without topographical interference. Signal strength at distance can vary dramatically depending on environmental and geographical conditions. Please consult factory for more detailed information. Fundamental Frequency: Tone (musical note): Operating Pressure: Operating Temperature: Basic Dimension: Kahlenberg Industries, Inc. 1700 12th Street, P.O. Box 358 Two Rivers, Wisconsin, 54241 Phone: (920) 793-4507 / Fax: (920) 793-1346 Website: www.kahlenberg.com Ema