Get in touch with the model railway with all your senses: Stationary sound module provides the specific sounds to the scenes in the animated world. Sound module is equipped with integrated loudspeaker and connection for external loudspeaker. Fits to level crossings item-No. 5100 (H0), 5104 (H0), item-No. 5700 (TT) and 5900 (N). Sound is synchronous to the movement of the level crossing.