K4-25 Air Alarm

Kahlenberg Model "K" Air Alarms are powerful signals backed by years of successful performance in coal yards, chemical plants, open pit mines and industrial facilities throughout the world. All of these horns and whistles are designed to operate in the most severe outdoor applications. They are simply constructed and extremely reliable resulting in a very low cost of use as compared to more complicated means of wide area warning.

• Dual tone, 370 and 622 Hz fundamental frequency, engineered to produce full harmonic contents up to 12 octave in order to enhance warning effectiveness
  
• Ideal for high-noise industrial areas, 8 km/5 mile audibility range
  
• Energy efficient with hermetically sealed stainless steel diaphragm assembly
  
• Will operate on a wide range of pressure without tuning or adjustment for years of trouble free service
  
• Constructed of high strength cast aluminum and stainless steel fasteners
  

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