Would it be possible to build a device that will sound an alarm if the relay doesnt engage?
I was wondering, after having pH comment on the fact that the relay makes things more complex, but could you wire in an alarm that will sound if there is a voltage on either the 5V or 12V lines and none on the 110/240V pump line?
That would be something that would be nice and handy, and could even be wired in to kill the system if the relay fails?
Just a thought.....and might have been covered somewhere else, but i thought i might throw it out there
