This Harmony XB4 plain lens modular red pilot light is supplied with 110V to 120V AC/DC, uses BA9s base. It has a metal bezel. This pilot light, designed to last without maintenance for a bright indicator of process and machine operations, is easily installed into a standard 22mm diameter cut-outs and connected with simple screw-clamp connections. It is clearly distinguishable visually at a distance thanks to a bright and long lasting BA9s base illumination. It is impact resistant, dust resistant, water resistant and vibration resistant thanks to its IP66/IP67/IP69/IP69K, making it ideal for operation in harsh environments.