Ideal for indoor or outdoor Industrial applicationsHorn is energy efficient with hermetically sealed diaphragm assembly which operates on a wide range of pressure without tuning or adjustment.Horn construction: High strength aluminum casting, stainless steel diaphragm discs and fasteners.Operates with electric solenoid or other actuating valves of 1/2" pipe size or greater. Product Specifications LENGTH INCHES10 WIDTH INCHES6 HEIGHT INCHES8-1/2 CONSTRUCTIONCast Aluminum and Stainless Steel MANUFACTURERS PART NUMBERK-3 VOLTAGE--- WEIGHT LBS.6 BRANDKahlenberg DECIBEL139 dB(A) @ 1M FREQUENCY470 Hz PRODUCT GROUPIndustrial Horn PRESSURE REQUIRED30-150 p.s.i. AVERAGE AIR CONSUMPTION24 SCFM AIR CONNECTION1/2 FNPT