Add realistic sound to your fleet with this wired sound and DCC decoder. Decoder measures: 1-11/16 x 11/16 x 1/4". Speaker sold separately.
 
For prototypes built with two nonturbocharged EMD 567 Prime Movers including the E3, E4, E6, E7, E8 and E9. Air horns include Wabco A2, E2; Leslie A125, A200, S2M, S3L, S5T; Nathan K3L, M3, M5, P3, P5 (Early); Holden M3H, K5H and Hancock 4700 Air Whistle.