The 558-0101-003F is a snap-in LED panel mount indicator from Dialight's 558 Series, featuring a red high-efficiency diffused LED with a peak wavelength of 635 nm. This indicator operates at 1.8–3.3 V DC typical voltage with a typical forward voltage of 2 V and a maximum DC forward current of 30 mA, delivering an intensity of 10 mcd at 8.7 mA. The device is housed in Valox UL94V-0 material with a 0.156" (3.96 mm) snap-in mounting hole, accommodating panel thicknesses of 0.031–0.062" (0.787–1.57 mm), and features a 60° viewing angle. Operating over a temperature range of -25°C to +85°C, this indicator is ideal for applications in data center infrastructure, networking equipment, storage hardware, wireless infrastructure, and electronic test and measurement instruments where reliable visual status indication is required.