Bulletin 854J (40 mm) and 854K (60 mm) Control Tower™ Stack Lights provide reliable, high-performance, high-visibility machine multi-status indication in a cost-effective package. These tower lights feature IP66 enclosure rating and are rated for indoor and outdoor use, making them an ideal signaling solution for a broad range of applications. With a wide variety of mounting bases available, they can be installed in any orientation — vertical, sideways or upside-down — to best suit the application.