Using this sign is a breeze. First, find a suitable spot in your theater for the 'Latecomers' area. Then, use the included mounting hardware to attach the sign. Connect the 25 - foot extension cable to the power supply and plug it in. That's it! Your sign will be ready to guide late - arriving patrons. When it comes to maintenance, since the LEDs have a long lifespan of up to 50,000 hours, you won't have to worry about replacing them often. However, if you notice any issues with the illumination, check the power connection first. Keep the sign clean by gently wiping the lens with a soft, dry cloth. Avoid using harsh chemicals or abrasive materials on the sign's enclosure or lens. If you want to add some extra visual effect, you can purchase the additional flash module and install it following the included instructions.