Allen-Bradley 855T-B10FC6 Stack Light Blue 120VAC

The Allen‑Bradley 855T‑B10FC6 is a 70 mm Control Tower Stack Light with a black housing and a blue indicator, designed for 120 VAC operation, featuring a flashing incandescent lamp paired with a built‑in sound module for audible alerts. In a standard 855T stack, you can mix up to five light modules with a single light‑and‑sound module (or other sound configurations) on one circuit, enabling synchronized visual and audible signaling from a compact assembly. The model designation B10FC6 confirms Black housing (B), 120 V AC full voltage (10), flashing incandescent with sound (FC), and blue lamp color (6); blue corresponds to code 6 in the 855T color map, and 120 V AC full voltage corresponds to code 10, per Rockwell/Allen‑Bradley documentation. This family is designed for industrial automation applications and supports stack configurations that include multiple light modules plus sound, all within a single circuit, with light modules rated for NEMA Type 12/IP54 environments and sound modules for appropriate enclosure classifications.