The 081-0111-303 is a red incandescent panel mount indicator cap designed for watertight 11/16" mounting hole applications in the 081 Series. It features a polycarbonate construction with a chrome-plated brass bezel and a transparent lens finish, compatible with T-3 1/4 miniature bayonet base incandescent lamps, cluster-based LEDs, or multi-chip LEDs. The cap has a 9/16"-27 NS thread specification with an integrated gasket for watertight sealing. This indicator is ideal for industrial control panels, machinery status displays, and equipment requiring reliable visual indication in environments where moisture protection is essential.