The ABB CL2‑501G is a compact illuminated pilot light designed for visual status indication in industrial control panels, machinery operator stations, and automation systems. It features a green integrated LED that provides clear, long‑life indication without the need for replaceable bulbs. The pilot light comes in a round 22 mm panel‑mount housing with a flat green lens and robust construction suitable for demanding environments. Its compact all‑in‑one design reduces assembly time and cost while offering high dust and water resistance on the front face.