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155 Adams Avenue, Hauppauge, New York, 11788-3699 USA
Phone: 800-231-1414 or 631-231-1414 Fax: 631-231-1498 E-Mail:
 K4 Series Airchime® Air Horns
Outdoor Warning Systems
360°of Coverage
Edwards is a registered trademark of UTC Fire & Security

The K4 series is designed for general signaling services and generate sound by means of vibrating diaphragms that modulate the flow of compressed air into resonating projectors. All horn shapes are mathematically calculated to amplify sound while closely retaining its fundamental frequency and natural harmonics.

These horns can be used for indoor/outdoor applications and are ideal for hazardous location use. Volume is adjustable by regulating air pressure.

Designed for mounting on air supply piping, supplying between 50 and 150 PSIG (3.5 and 10.5 kg/sq cm).

Typical applications include emergency signaling applications in mines, refineries and industrial facilities. Ideal for individual equipment and plant warnings.


Die cast aluminum construction
Adjust volume via air pressure
Hermetically sealed diaphragm
Provide complete signaling coverage
Single or dual tone models
Effect. range - 3/4 mile (1.2 km)*
1 1/4" (32mm) NPT Inlet
Single or dual tone frequency
Operating range - 50 to 150 PSIG
(3.5 to 10.5 kg/sq cm)
Click for Spec Sheet
K-4-1 EDWARDS K4 Series Airchime Air Horn Single Tone - 4 K-1 Combo for 90 to 360 Degrees
K-4-12 EDWARDS K4 Series Airchime Air Horn Dual Tone - 4 K-12 Combo for 90 to 360 Degrees
K-4-25 EDWARDS K4 Series Airchime Air Horn Dual Tone - 4 K-25 Combo for 90 to 360 Degrees
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This page was last updated October 22, 2014

 Phone: 800-231-1414 or 631-231-1414   Fax: 631-231-1498 E-Mail:

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