My Märklin rail layout

HO UK model rail

Märklin 60841 – m84 decoder


The m84 decoders switches power to a range of items. Effectively a digital relay. It can be used to switch on and off lighting, motors etc.


Connecting up

As with the m83 decoder the m84 can be linked together with other m84’s or m83, all sharing the same power which comes from the either the track of via a separate power supply plugged into one side of he unit.


A m84 & 2 m83 linked together and the spaghetti of wires is all my own fault. In the foreground is the connector box with one socket free for the second mobile station

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