Allen‑Bradley 856T‑BT3 is a 70 mm inline stack‑light module from the Control Tower family, delivering three steady green LED indicators in a single compact housing. It is a one‑circuit light module intended for direct mounting in panels or machine enclosures and operates on 24V AC/DC. Built with a polycarbonate housing and rated for rugged industrial use, it’s designed for harsh environments with protection suitable for demanding signaling roles (IP66/67 in documented specifications). Typical applications include visual status indication on automation lines, conveyors, presses, and other equipment where a compact, durable three‑LED stack light provides clear, immediate signaling.
