The DIALIGHT 551-0207 is a 3mm LED CBI (Circuit Board Indicator) ideal for applications requiring clear visual indication on printed circuit boards. Its high-contrast, UL 94 V-0 rated black housing ensures excellent visibility. The CBI's design facilitates PCB cleaning through housing stand-offs. It's compatible with QuadBlock configurations and is designed for horizontal LED arrays, making it suitable for industrial control panels, instrumentation, and other applications where reliable visual feedback is essential. The part is RoHS compliant and features a robust construction for long-term durability.