This is a replacement switch assembly for the Mastermind GT 10, 16 and 22. Replacing switches requires no soldering - they plug into the circuit board, and replacing switches does not void your warranty.
THIS MODEL IS INTENDED FOR MASTERMIND GTs made in mid-2020 or earlier. These have a connector that lies flat along the circuit board (see photos). If you have a newer GT where the connector plugs in vertically, we offer a different model of switch for those units. Search for part number MMGT-SA1.