Hi there

So this was a surprise to me, upon putting on the track the locomotive automatically registered in M4 (MFX).
This is a Roco 3 rail locomotive with a Zimo sound decoder, new product.
The decoder is a MS 450 P 22 Zimo decoder, I looked it up on the Zimo site and sure enough they list some MFx support.
The function icons did not load, I'll try it with my mobile station 2 later and see if they load on a Marklin controller.
I wasn't aware that ZIMO decoders now have M4 support.