The Rotary Lift LockLight lift accessory, Nos. FA834 and FA835, shows users at a glance if a vehicle lift is resting on its locks. The device, which can be installed on any Rotary Lift two-post or four-post surface lift or SmartLift in-ground lift, is approximately 4" square with a light in the center. It is mounted to the lift, or the control console of light duty in-ground lifts, and is connected to the lift’s hydraulic system. When LockLight detects the lift’s hydraulic pressure has been relieved, the light in the center turns green, indicating the lift is on its locks and work can begin. It is also compatible with other brands of hydraulic lifts.