So there are 4 led colors. green-on, green-off, red-on, red-off.
The color represents the auto / programmed status. If you click the led it will force the override to the opposite of the current, when it's in that state another click clears the override.
It works very well in practice. The only negatives are that you can't override it to the state that it's in, and you also cannot tell if the relay is overridden and in it's auto state (I.e. programmed to on and overriden on both look the same)
It can be changed, but I was trying to do it all in one button when I did it. On the iPhone, you get discreet on/off/auto.
Here's a screen shot with one relay (extension) overridden on and my refugium light overridden off.
ImageUploadedByTapatalk1374981376.871629.jpg
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