This is sweet little box for simple relay control! I had it up and working in just a couple of minutes, turning on and off some LED's here on the work bench. I plan to use it to control the power windows in my car, as they have heavier amp relays already, and just need the signal to put them up or down.
I am using one of the inputs for the voice recognition trigger for my system.
It's nice that everything is contained neatly in the box, and no external relays to have to hide somewhere