This pilot light, designed to last without maintenance for a bright indicator of process and machine operations, is easily installed into a standard 16mm 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 LED illumination and transformer It is impact resistant, dust resistant, water resistant and vibration resistant thanks to its IP65, making it ideal for operation in harsh environments High performance International standards & certifications ( Marine certification, IP66 IP67 IP69 IP69K, Type 13 and 4X)