Hello to Amy J! On/off switches are easily added by changing out the
power cord that came with your tumbler to a cord that has the switch
If you can't get one locally, try I.J.S. (where I work) at
1-800-545- 6540 --or-- 505-722-4451
Either way, make sure it's rated for the application!
I realize I hardly ever read the digest regularly, much less leave
helpful posts, but you gotta admit, they're QUALITY STUFF!