Allen-Bradley 855T-B24DN4 Stack Light Pole Mount

The Allen-Bradley 855T-B24DN4 Stack Light Pole Mount is a 70 mm diameter Control Tower Stack Light module in the 855T family, engineered for overhead visibility in industrial environments and designed to mount on a 25 cm pole base or compatible surface-mount base. The B24DN4 variant is a 24 V AC/DC signaling unit that uses a red incandescent lamp to deliver bright, steady indicator lighting, ideal for signaling a single status or when combined with additional modules to create multi-point signaling across a machine or line. In typical installations, 855T devices are designed to be stacked; up to five light modules can be configured in a single stack, enabling compact status displays at a single mounting location. This pole-mount version integrates with Allen-Bradley signaling ecosystems, supporting standard control-tower configurations used in applications such as machine control, packaging lines, and production cells where clear visual status indication is essential.