The 021-2900-300 is a miniature panel indicator from Dialight's 0B1 series, designed for status indication in control panels and instrumentation. It features a convex, faceted polycarbonate cap with an unfrosted or transparent finish and white color, mounted in a polished chrome bezel with no additional hardware. The indicator is part of the incandescent and neon indicator product line and is intended for North American applications. This compact design makes it suitable for space-constrained panel layouts where clear, reliable status indication is required.