Mutual Blocking Relais / Shutter Motor

[mrox]

Hi,

im thinking about to use a SONOFF Dual for my shutter motors. But im concerned that both relais may get enabled in the same time.
Is there any idea how to do mutual blocking of the GPIO's? Can somebody give me a hint how to handle this mutual blocking?

I thought about using rules with events. But when e.g. http://<espeasyip>/control?cmd=GPIO,12,1 is fired from extern i would maybe have the two relays active the same time.

cheers