Caldwell's Lifter LockOut™ senses when a load is in the lifter and locks out functions to prevent inadvertent opening of the lifter. It can be installed on most motorized lifters that do not have a means of locking out the drive, including Caldwell Model 84 Coil Grab, Model 85P Paper Roll Grab, and Model 60 Sheet Lifters. It can even be installed on other manufacturers’ lifting equipment.