Hi! I am looking for a e-stop with remote feedback. Scenario, we have several shots of confetti from in front of the stage. I want the crew to gave an e-stop that they only release when it is safe to fire. So far very easy and no problems. However it works be nice with feedback that everything is ready that is not dependable on radio communication. My first idea was a 4 pole e stop with the one pair for control of the gear and the other pair for lightning a small light by the controller indicating everything is ready. I have not found any 4 pole mushroom buttons though. Anyone know of a nice solution for indicating status of an e stop that is not under load?