The 559-2201-007F is a snap-in LED panel mount indicator from Dialight's 559 series, designed for high-brightness applications with a 0.250" (6.35 mm) mounting hole. This indicator features a green LED with a peak wavelength of 563 nm, typical intensity of 10 mcd, and forward voltage of 2.1 VDC at 10 mA forward current, with a 65-degree viewing angle and -25°C to +85°C operating temperature range. The device supports multiple voltage options (1.6–3.6V DC with resistor, or 5/12/24V DC without resistor) and includes straight terminals for wire wrapping or 24 AWG lead wire in 6" or 14" lengths. The housing is black with UL94V-0 flammability rating and is RoHS compliant, making it suitable for data-center infrastructure, wireless infrastructure, test and measurement instruments, and communications equipment.