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There are three identical 2-pin connectors on OpenSprinkler that connect to 24 VAC, Common, and the Rain Sensor. I like the idea of removable connectors; it makes for quick installation and removal. But, unless they are color coded to minimize (not preclude) the chance of misconnection, it’s an invitation to a damaged board, or transformer. There’s an old saying to the effect that if it can happen, it will.
All it takes is a couple, or three permanent marking pens applied to both pieces of each connector. I chose Red for the 24 VAC connector/plug, Black for the Common connector/plug, and nothing for the Rain Sensor. Maybe Blue for the third one would be appropriate. Any marking system is better than none.
I agree with the concern, and I did think about this issue as I’ve heard one or two cases where users plugged the 24VAC into the COM terminal. I was considering using different connectors for different terminals, but in the end it’s difficult to source different parts. Your color coding suggestion is good, and I will post it in the instructions.
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