RCI's 972 Request to Exit Button makes it easy by combining three popular buttons in one box. The 972 is packaged with three lenses, and three messages so you are certain you have made the right selection with a 2" (50.8mm) request to exit button. This 2" (50.8mm) button is available with a long life incandescent or LED bulb. Now available with an optional 30 sec. fixed or adjustable delay timer.