Using a micro-circuit board to control the traffic light conversion effect, to achieve the phenomenon of realistic traffic lights.
It is a necessary product for sand table models, building models, and train models
Black wire is for positive, the other three are for negative.
Great accessories for diorama, buildings, train models
Material:Plastic, steel pipe
Application: Construction sand table model / DIY materials
Circuit board size:19.1x18.5mm
1 Circuit board