Allen-Bradley 800MR-Q24A Round Indicator Pilot Light

The Allen-Bradley 800MR-Q24A is a 22.5 mm round pilot light with amber lens, designed for full-voltage 24 V AC/DC signaling in control panels. As part of the 800MR family of round pilot lights, this incandescent indicator provides a bright amber glow when energized, serving as a clear status signal in industrial equipment. The 24 V designation in the model name identifies its full-voltage input, and the compact round form factor fits standard 22.5 mm panel cutouts used on Allen-Bradley control stations and automation equipment. This variant uses an incandescent lamp rather than LED, which is common for older 24 V pilot lights in the 800MR line; for users who prefer LED illumination, the compatible variant is 800MR-QL24A. Typical applications include signaling active or inhibited states on machinery, conveyors, and process lines, where a clearly visible amber indicator helps operators quickly assess system status and respond accordingly.