This Harmony XB4 plain lens modular green pilot light is supplied with 230V to 240V 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.