Marklin M84 Decoder Part 1: Unboxing and Basic Functions

Unboxing and explanation of the basic functions of the Marklin M-84 switch decoder.

Part 2 Explains adding a Circuit Track:

We show you how to set an address, and how to register the M-84 to the CS3 Central Station from Marklin.

We also show how to use the 8 inputs for manually switching the relays (similar to the 7244 universal relay). These inputs on the "topside" of the decoder can be activated by push button switches, contact tracks, reed-switches and more. They allow an analog activation of the particular port on the decoder, much like activating a relay in the old days.

You can find this decoder on our website:

The operation of the older K-84 decoders is in principle the same. They will not have the feedback to the CS3, because they lack the MFX feedback function. But this video may still help you in explaining the basic operation of these decoders.

Always read the instruction manuals, and remember that the official instructions should always take precedent over what we show you here.

[AlvaroSousa]

Once more thank you for all your support. When I commented one of your videos, I did not saw that you were a store from Marklin, not Marklin itself, but this is what Marklin should do! Believe me that I learn more from your videos, than the answers I have from Marklin itself. Thank you, and please go on making videos like this.

[heinzvanderlaan]

really really love your explanations !!! Regards, Heinz

[fastloudsupercarsonhighw]

Hallo.. I have a question: my layout will need 15x M84. My problem occurs when I connected more than 5x M84. All M84 switch on/off bythemselve when a loco is running on the track. Fyi I am using DCC in CV Configuration and set up the 8addresses. Any idea why? Thank you

[tristangurtner]

Super vidéo très bien expliquée !!! 👍👌

[Brandflugan]

Hi and thanks for your great videos!
Do you know if the M84 connected with a switched pack power box should be connected to the tracks as well? How could it be connected to the CS otherwise :/

[mislomislo]

Hello,
Thank you for this video. Please, what happens if there is incoming link signal related to one switch at the same time? E.g. inputs 1 and 2 switched on simultaneously..

[runeljungstrommer]

Will you show this decoder connected to Märklin Loco-transfer 72941?

[TON]

Great ! Very helpful thank you ! It's possible config with only mobile station Marklin ? It"s possible to dim LEDs with M83 or it's only possible with M84 ?

[SUYoyo]

Very helpful, thanks! Do you know if you can use the M84 to use uncoupling tracks?

[eichengchen]

German Marklin Electric Train Combo Kit Like