The 557-1702-203F is a yellow LED panel mount indicator from Dialight's 557 Series, engineered for daylight viewable applications in outdoor environments. This indicator features a typical intensity of 1550 mcd with an operating current of 80 mA, utilizing AlInGaP LED technology for enhanced brightness and durability. The device is housed in white polycarbonate with a transparent polycarbonate lens (UL 94V-0 rated) and includes 5.5" wire leads with 24 AWG gauge for electrical connection. It operates over a temperature range of -25°C to +85°C and is rated for watertight operation to Mil-L-3661B specification, making it suitable for harsh outdoor conditions including rain, dust, and sunlight exposure. The mounting hole diameter is 0.687" (17.46 mm) with a maximum panel thickness of 0.156" (3.96 mm), and it incorporates a phosphor bronze lock washer and brass nut for secure installation. This product is ideal for industrial signaling, equipment status indication, and outdoor warning applications where high visibility and environmental durability are essential.