The Train Control Systems M4 Decoder delivers smooth, reliable performance in both N and HO scale locomotives. Compact yet powerful, it features four functions with auto-adjusting BEMF for exceptional slow-speed control and easy setup. The Quiet Drive technology ensures silent motor operation, making it ideal for realistic and efficient train control in any layout. Dimensions: 0.365" x 0.587" x 0.109" (9.27mm x 14.91mm x 2.77mm).

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