855E CONTROL TOWER SOUND MODULE 24V AC/DC BLACK HOUSING

The ALLEN-BRADLEY 855E-B24SA3 is a control tower sound module that provides a 24V AC/DC piezo tone for use with 50 mm stack light assemblies. Designed as a compact black housing accessory, this single circuit/tone module supplies full-voltage 24V AC/DC drive to add audible indication to visual stack light signals. It installs into standard 50 mm stack light sections to deliver clear, continuous or pulsed tones matched to machine or process states. Ideal for industrial panel builders and maintenance technicians, it solves the need for reliable audible alerts in manufacturing, automation, and equipment monitoring applications.

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