This light block with transformer provides clear visual feedback on the status of your machines It is clearly distinguishable visually at a distance due to illumination via integral LED, enabling complex machine statuses to be read at a glance It is impact resistant, dust resistant, and vibration resistant thanks to its IP20, making it ideal for operation in harsh environments High performance International standards & certifications (Marine ABS certification, IP20, Type 1, 2, 3, 3R, 4, 12 and 13)