4281 Lg Model Pennsylvania RR Animated & Lighted Billboard&nbsp;by Miller Signs Suitable for HO scale, S scale, O scale, 6.5" wide x 3" tall, Limited Edition, comes with billboard 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 comes with billboard supports