Ah....Touch Buttons and Balanced Bridge detectors...The good old days.. grin

One of my first few days on the job, 35 years ago, my boss tells me..

"That tenite cover is loose over the door detector. Reach in behind it and tighten it up"..

Let's just say that 1000 cycle wouldn't kill you but it would make you hurt yourself trying to get away from you.. grin

Of course he thought it was hilarious. Different times for sure.. cool

It Don't mean a thing if it aint got that swing.

Cool, Free, Johnny Smith courtesy of NPR..HERE
http://www.npr.org/ramfiles/asc/asc25.smith.asx