In summary, panel indicators can be designed to utilize LED, neon or incandescent light sources. LED light sources have cost, design, and performance benefits compared to neon and incandescent alternatives. LEDs provide a long lifespan, low energy consumption, durability, fast on/off speed and low heat generation. The Lumex family of standard QuasarBrite™ LED panel indicators includes LED in several colors, shapes and sizes, with available housing, mounting hardware, and wire lead varieties. The standard LED colors are red, green, yellow, blue, and white, and include round, square, and rectangular shapes from 3mm to 20mm in size. Housing material options are rubber, plastic, chrome, and black anodized which are available with wire leads ranging from six inches to six feet. Mounting options include nut and washer, friction fit, and lock-in switch.