Innovative LED technology combined with a 5-color, modular-style assembly, make these towers a snap to use. It's easy to make changes and modify LED combinations even after you have the LT7s installed on your machine, And with IP65 environmental protection and many available options, the LT7 truly does have it all. Including intense illumination of lens colors so reliable they can last over 50 times longer than conventional incandescent bulbs.