Allen-Bradley 855T-B10DC4 is a 70 mm red stack-light module with an integrated piezo sounder designed for industrial signaling in control towers. Operating from 120 V AC, this red light module combines a visible indicator with an audible alert in a single light head, part of the Rockwell Automation 855T family. It is built to mount with standard 855T bases to form a multi-element signaling stack for equipment status, process alarms, and operator cues in harsh industrial environments. Typical applications include manufacturing lines, packaging, and automation panels where quick, unambiguous status notification is required.
