Rube Golburg (?) must have been your favorite! :rolleyes: Always gotta make something simple much harder than what it is or has to be. Why not just "discipline" Yourself to turn it on when coming in to shop, and off when leaving. Mine is by my door and I turn off and drain it for water and sometimes a few of the valves in shop as my "routine" for closing up, MOST of the time anyway. So you forget once in awhile, SO what?

Start now on "routine" part or as you get older you'll be forgettin' lots more stuff!
More seriously.... they make store display sign electrical boxes with timers and think they can be in 220 volt too. An old hardware store I worked at for years had one, he had to adjust it often to allow for season change. Looks like one of those add-on elect boxes for dryers or such and had the big pull-down switch on side too. Seems like Overkill, just use "routine"!

:p