A4X 1.3 Amp, 4 Function DCC Decoder - Control Only -- Fits PROTO, Atlas, Athearn, Bachmann, Kato, Etc. 2.860 x .680 x .145"

This full featured, 4 function, drop-in decoder was originally designed to replace the early Atlas lighting boards. Since then several other manufacturers have adopted the same lighting board style making the A4X an excellent option for any HO locomotive with the large, tab connected lighting board. Included is our auto-adjusting BEMF for outstanding slow speed performance and hassle free set up. Also includes Quiet Drive for super quiet engine performance. A4X comes with on-board resistors for LED's. Dimensions: 0.682" x 2.85" x 0.155" or 17.32mm 72.39mm 3.94mm