In the middle of a multi-controller install and need help

@ninjago - Yes, you’ll need either the isolator or a relay (cheaper). The relay will cost about $15 (including shipping), or less, here is an example ->

The one Gene sourced in the linked post is ~$7 and has a light when one side is active.

You don’t want to connect two electrical sourcing (i.e. Rachios) devices together, the current flow can get strange.

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Got it ! Thanks DLane I appreciate your help, I will give the relay a try since is cheaper and would look cleaner if hidden somewhere , Thank you !

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