1081 Large Model Heinz Animated Lighted Billboard&nbsp;by Miller Signs Suitable for HO, S, O scales, 3.9"t x 3.9"w, comes with bill board supports The sign comes with a circuit board and AAA battery box, simple to install on your structure on the curcuit board there is a on/off switch and a push button to change the sequence, has over 40 sequences may also be lighted with a 4804 converter or 4803 or 4803 adapter may also be lighted with a 4804 converter and a 4802 or a 4803 adapter