This Siemens 8WD43 28-1XX Sirius signal column lamp produces 5W of power, has a voltage rating of 24 VDC, and is suitable as a replacement bulb for use with Sirius 8WD44 signal columns rated for 24 VDC. It has a BA 15d base. This signal column lamp is suitable for use with an appropriate Sirius signal column.

Siemens manufactures electronic products for building automation, industrial drives, lighting, energy generation, medical equipment, and rail transportation. The company, founded in 1847 and headquartered in Munich, Germany, meets International Standards Organization (ISO) standards 14001, 9001 and TS 16949.