Magnetic Switches - for $20 each!

I’ve wanted to add magnetic switches for a long time but I refused to pay the THOUSAND DOLLARS per switch for real ones, so I made my own on the cheap! Here are the parts I used: (As always, I have no financial interest or links to any of these sellers, I am only listing them to show what I used to build mine. Be sure to shop around to find the best price!) DPST (ON)-OFF Toggle Switch - 12V Electromagnet- 4 Channel Mosfet- Arduino Uno-