From dancing chase lights to pointing arrows, these animated electroluminiscent billboard kits feature a wide variety of colorful, simulated-neon graphics for a variety of businesses. Kits include battery holder and all necessary electronics for plug-and-play installation. Signs require three AAA batteries (not included). Just install them on your building rooftops or along highways. Large signs are suitable for HO and larger scales, medium signs are usable as large N Scale signs and in HO Scale.WARNING: This product can expose you to chemicals including Diethylhexl Phthalates, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov