The best in DCC that the market has to offer. I never knew how good a locomotive could run until I switched to ZIMO.
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The subminiature MX621 is used all the way down in Z-scale. In G-scale This decoder is an excellent alternative to function decoders, because it can control a motor function (e.i. opening door, conveyer belt, crane...) unlike a pure function decoder
Features of the MX621: