The Train Tech Emergency Vehicle Smart Light is a HO/OO gauge lighting system designed for easy integration into buildings, locomotives, vehicles, and other model railway elements. This product is specifically for the light unit itself. It is compatible with brands like Scalextric and Hornby, and is suitable for enthusiasts of radio control models, Sylvanian Families, and LEGO. Key features: - Easy to fit into various models - Designed for emergency vehicle lighting effects - Suitable for HO/OO gauge layouts