well we bought an LED ‘open’ sign that has several clicks either just OPEN, or the letters turn on one by one O, then P, then E, then N then they go out and start over again, and I can’t recall the third light setting, then off…
In our experience, since we are in a very rural county, our power has to be sent over a mountain to get to our county, and we suffer from power outages the likes I never experienced before in my life, (the latest are from the summer forest fires, and now the dead trees just topple over from the weight of wet snows) This has been happening with such frequency it would blow your mind… quite a few of the LED’s have been burned out of our sign by these power surges from the brownouts and so, LED is still fragile in my experience… (WHICH by the way, we were fortunate that this last outage occurred on days we were not open for business! 18 hours without power… lucky for us its winter, I’d hate to think what losses in food we would have had if it were Summer. And we’re counting our blessings it didn’t happen during our regular open hours.)