Reply to "Bluerail and Deadrail Mod to MTH 7Premier R-2 Engineering Sample. UPDATE 10/01/21 IT'S ALIVE!"

gunrunnerjohnOGR Forum Member SUPPORTING MEMBERDIGITAL SUBSCRIBER

@Ron045 posted:
If the 4400 is receiving the momentary signal from the BR app (Let's assume FX5 is connected to the coupler), then what purpose does the relay serve?
I'm not challenging you or trying to be a smart a**. I just really want to know the benefit.

It carries enough current to actually fire the coupler. If your decoder is good for several amps, then you don't need the relay.

4/23/2110:18 AM

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