Decora Paddle Switch Guard

I have a lot of three way switches in my house and as I add smart switches, which require constant power, I have to disable the other side of the three way switch (or spend a lot of money swapping them out). This guard mounts to either the top or bottom screw for a decora paddle switch plate and prevents someone from inadvertently flipping the switch on (which would remove power from the downstream smart switch). This switch guard would also work well for a smart bulb application, which also always requires constant power. You can still manually rotate the switch guard 90 degrees if you want to intentionally flip the switch on.

You will need to purchase one slightly longer screw than what comes with most switch face plates to accommodate the width of the switch guard. Your local hardware store should carry them.