12 MECHANICAL GEAR AND LOCKING DEVICES, SWITCHING AND POWER ELECTRONICS, ELECTRIC MOTORS AND ELECTRIC CONTROLS, BARRIERS, ACCESS CONTROLS, PERSON BLOCKS, PARKING SYSTEMS, DOOR AND GATE DRIVES, COMPLETE GATE SYSTEMS; MICROPROCESSING CONTROLS; PLANNING AND DESIGNING LARGE LOCKING INSTALLATIONS, PARKING INSTALLATIONS, PARKING SYSTEMS, ACCESS CONTROL DEVICES, PERSON SEPARATORS