Allen-Bradley 854J-B24SA3 Single Tone Sound Module

The Allen-Bradley 854J-B24SA3 Single-Tone Sound Module is a fixed-frequency, piezo-style audible signaling element designed for Allen-Bradley 854J 40 mm stack-light assemblies. It delivers a non-adjustable 2500 Hz tone with an output of 80 dBA at 1 meter, providing clear audible Alerts alongside the visual indicators in industrial control panels. Housed in black polycarbonate, the module is rated IP66/NEMA 4X for rugged environments and has a 43 mm outer diameter to fit standard 40 mm stack-light fittings. It operates from a 24 V AC/DC supply and draws about 65 mA, making it suitable for single-circuit signaling requirements where a loud, consistent tone is needed. The 854J-B24SA3 offers a single-circuit, piezo-style sounder with a DIP-switch to select steady or pulsing operation, reflecting the product’s non-variable tone with selectable pulse patterns. Designed for reliability in static, non-vibrating conditions, it carries an average life rating of approximately 20,000 hours at 24 V AC/DC. This sound module is commonly integrated with Rockwell Automation’s 854J/K control-tower signaling range to provide audible alerts in process lines, machine areas, and safety zones where both visual and audible cues are required to convey status or fault conditions.