Auto Shut off Switch Box I was always leaving my Soldering Iron / Plastic Welder on and camebup with this as a solution. The Box uses a Defiant Mechanical Timer (I found it at the 99Cent Store, with Home Depot sticker ?), and a standard Grounded Wall Plug. I removed all connector ears from plug and just use the center screw to attach. The Cover screws onto the box with 4 – 3x15 mm screws. I put mine together then used the hanger hole in the back, to secure the cord to the box by adding hot glue through the hole.