The Garrett MT 5500 Walk Thru Metal Detector is one of the world's most popular walk-though metal detectors because it provides maximum throughput with unparalleled multi-dimensional scanning. The MT 5500 meets the demanding needs of security professionals worldwide who trust its ability to maintain a high flow rate with minimal alarms.Easy AssemblyGarrett's MT 5500 is easily assembled with only 4 (four) pieces and 8 (eight) screws and simple to follow instructions. Multi-Dimensional Scanning The MT 5500 uses multi-dimensional scanning which ensures maximum throughput and uniform screening with a minimum of false alarms. Multiple coil circuitry with dual alarm lights inform operators on which side of the detector the target is located. With "hot spots" eliminated, the unit's detection field is uniform throughout the archway and false alarms are significantly minimized. Microprocessor Controlled Stat