These are the single switches found on many of the newer Dixie Narco machines. They are down on the drive or vend motor and determine when the motor should stop in it's rotation of vending out a can of soda. When this switch has gone bad the motor will keep turning or jackpotting and drop several cans. Then it will shut down at the wrong spot and go out of service, or say sold out, even theough you still have cans or Bottles in it. This switch is normally used on the newer mutlti price computerized machines that have the SII D controller in them.