Anyone have any experience finding or using a photocell to control the hi/low option on LED lights? I have to upgrade the lighting some fire apparatus, and would much rather use a photocell than a switch, simply because nobody will ever use the switch. I saw that Whelen had possibly made one called DOTPHOTO, but could not find anything other than a picture. It looked like a small flush mount photocell. All I need it to do is provide a +12v signal to trip the low power mode. Any help is appreciated. If possible, I would like to keep it with a name brand manufacturer, and not eBay junk that will fail in two weeks.