The 557-1805-203F is a blue LED panel mount indicator from Dialight's 557 Series, engineered for daylight viewable applications in outdoor environments. This indicator features a typical intensity of 1200 mcd with a current draw of 16 mA, utilizing advanced InGaN LED technology for superior 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 reliable electrical connection. It operates over a temperature range of -25°C to +85°C and is rated watertight to Mil-L-3661B specification, making it highly resistant to rain, dust, and sunlight exposure. The indicator mounts through a 0.687" (17.46 mm) hole with a maximum panel thickness of 0.156" (3.96 mm), and is secured with a phosphor bronze lock washer and brass nut, both white nickel plated. This product is ideal for industrial control panels, outdoor signaling systems, and applications requiring robust, weather-resistant status indication.