L63 LED Robust Panel-Mount Indicators VCC L63 LED Robust Panel-Mount Indicators are ideal for demanding applications where a robust design is necessary. These applications include industrial control panels, transportation dashboards, and aircraft instrumentation. The L63 series delivers 100,000 hours of life for longer reliability. Other features include low power consumption, front-panel mounting, diffused T-1 (3mm) LED, and a 25° to 50° viewing angle. VCC L63 LED Robust Panel-Mount Indicators come in red, green, or yellow and are supplied with lock washers and hex nuts.