The AML41FBA2 is a rectangular incandescent display indicator housing from the Advanced Manual Line (AML) series. This model features a single lamp circuit, a black bezel, and is configured for .110 x .020 inch terminals suitable for either solder or quick-connect wiring. It is designed for use with AML51 series pushbuttons and separately ordered T-1-3/4 wedge base incandescent lamps, allowing for customized panel displays. The AML41 series provides a coordinated appearance with other AML switches, and its snap-in mounting design simplifies installation in control panels for industrial, communication, and instrumentation applications.