This Harmony XB7, monolithic blue pilot light does not include bulb and is supplied with 250V AC, uses BA9s base and has screw-clamp terminals. It 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 due to clear colors and illumination via BA9s base, enabling complex machine statuses to be read at a glance. It is impact resistant, dust resistant, water resistant thanks to its IP54, making it ideal for operation in low pressure environments. It has a double insulated plastic bezel. Its wide range of operating temperatures from -25°C to 70°C allows versatility in usage of product.