This is an electrical circuit I made as a hobby about 10 years ago for an event at work. I previously obtained a Class 2 Electrical Engineer license. It's a simple circuit with a breaker and a three-way switch that turns on one light at a time. I've had it displayed at my parents' house, but I've only turned it on a few times to light the lamps. I no longer need it, so I'm putting it up for sale. By the way, there's only one of these in the world. If you're interested, please take a look.