To commercialize various kinds of signal for railway models at low cost.

A signal body 61 has an attachment portion 61a attachable to or detachable from a connecter, at least one signal light, and a wiring pattern electrically connecting the attachment portion 61a and the signal light. A control device 63 generates a common control signal not depending on the kind of the signal body 61, outputs the control signal to the connecter, thereby sequentially switches lighting patterns of the signal light of the signal body 61 attached to the connecter. A series of the lighting patterns of the signal light are determined due to the wiring patterns different by every kind of the signal body 61.