This Schneider Electric Harmony 9001SK red pilot light with transformer and plastic fresnel is supplied with 110Vac. It fits in a 30mm hole. This single component pilot light with transformer provides clear visual feedback on the status of your machines. It is easily installed into a standard 30mm diameter panel cut-outs and connected with simple screw-clamp connections. It is clearly distinguishable visually at a distance due to clear colors and illumination via integral LED, enabling complex machine statuses to be read at a glance. It is impact resistant, dust resistant, water resistant and vibration resistant thanks to its IP66, making it ideal for operation in harsh environments.