Dialight's 557 series panel mount LED indicators are engineered for demanding environments requiring reliable visual signaling. These indicators feature a watertight construction, a 11/16” mounting hole, and a robust housing material (white polycarbonate). They offer a wide viewing angle and uniform illumination, ensuring clear visibility in various industrial settings. Customization options include connectors, terminals, and various color combinations (Red, Green, Yellow, Blue, and bi-color options). The indicators are designed for long-term reliability with a 100,000-hour life expectancy and meet stringent environmental specifications.