The 559-2101-001F is a snap-in LED panel mount indicator designed for high-brightness applications with a 0.250" (6.35 mm) mounting hole. It features a black UL94V-0 flammable-rated housing and supports multiple voltage options including 1.6–3.6V DC (with resistor) and 5, 12, 24V DC (without resistor), with operating temperatures ranging from -55°C to +100°C. The indicator is available with straight terminals for wire wrapping or 24 AWG lead wire in 6" or 14" lengths, and accommodates panel thicknesses of 0.031–0.062" (0.787–1.57 mm). It utilizes AlInGaP and InGaN LED technology for various color options and brightness levels, making it suitable for fan tray assemblies, data-center infrastructure, wireless infrastructure, test and measurement instruments, and communications equipment.