Idel product for getting my fans of 24V in the 3d rinters regulated. I use them for the fans in the power supplies and mainboards. Just cut one connecting cable, solder both sides to the switch and you're done! The switch is fully isolated so you only need to screw it somewhere on the cooling of the PSU or glue it to a component that gets hot and it works, both starting to work and switching off after cooling down the switch will automatically reset.
all ok!