Mallory Sonalert Products' stack light series features state-of-the-art brilliant LED colors (red, yellow, green, blue, or clear), an ultra-low current draw (40 mA maximum), and are cUL approved with NEMA four times waterproof rating. Options include 24 V_AC/_DC or 120 V_AC, pole or direct-mount, and with or without sound. For the sound option, Mallory is offering a preferred 2,000 Hz sound frequency and four sounds with each stack light. The sounds include continuous or medium pulse (five pps) plus two unique sounds: slow double-pulse or a continuous tone for five seconds followed by a short pulse tone every one second. Mallory’s unique triangle shape, brilliant LED lights, and superior sound options make them suitable for any indoor industrial control application.

Stack light with sound

Stack light with light only