DoorKing 1601 Barrier Gate Operator The DoorKing 1601 Barrier Gate operator is designed for single lane (14 ft. max) vehicular traffic control in high traffic commercial and industrial applications. The Doorking Barrier Gate 1601 operator is designed so that it can be mounted on either the left or right hand side of the roadway. The Door King 1601 can be equipped with a DC convenience open package (optional) that will automatically raise the arm in the event of a power outage.Automatic p.a.m.s. sequencing with slide and swing gates. Folding arm kits available for low headroom applications. Barrier arms available in aluminum/wood or plastic with optional foam padding.