Miller Engineering RCA Victor Billboard Animated Sign KIT #8071 RCA Victor Billboard Animated Neon Series Kit # 8071 Approximate Size 3.5" W x 5" T Suitable for O scales Animated Electroluminescent (EL) neon sign Battery Pack (requires 3 AAA batteries - not included) Multi Channel sequencing sign Photo etched billboard supports (assembling required) Complete Instructions Suitable for HO through O scales.