I added a key switch to the car lift so that we can cut power to the lift when we aren’t around. With young kids in the house and especially their friends around, we really want to be able to prevent the lift from moving. After raising the lift and then setting it down on the mechanical stop, you have to raise the lift slightly to release the safety catch. With the power off, you can’t pull the safety catch, so there’s no way to move the lift up or down.
