Mallory Sonalert Products, Inc. was headquartered in a 22,000 square foot facility in Indianapolis, Indiana. It is a leading manufacturer and developer that provides Sonalert® electronic audible signal products. Our Sonalert line of trademarks has been owned for over 30 years. In addition, we are committed to offering a complete range of audible signal devices containing transducers, indicators, sirens, buzzers and relevant hardware to a extensive range of customers in the field of industrial, military and consumer electronic markets.