1251 Model Las Vegas Animated Lighted Sign by Miller Signs Suitable for N scale, HO scale, 3.1" wide x 4.1" tall, Limited Edition 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 or 4803 or 4803 adapter