[Rick TYler]

Originally Posted by Greg Marra

Playing the sound requires the batteries to be connected that it came with, and external power to controls circuits is illegal.

Yes, but it would be perfectly legal to connect something (like a discrete light or a soft tone) powered by its own battery to the giant button. As long as you don't connect it to the OI and it doesn't require AC power, you should be good to go, right? Don't waste the big button.