Automatically turning off light switches is cool, messing with hi voltage electricity is not. Okay, so your house probably doesn’t have a third rail running through it, but I wouldn’t dare start screwing with my home’s electrical wiring for fear of electrocution. The Light Switch Timer mounts over any standard American light switch and can automatically flip the switch up to 9 times a day with increments of 1 minute to 24 hours. Manual on and off you say? No problem. A button, yes a button, lets you do that.
You can grab one for an affordable $40.