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The Pioneer 202 is a motion detector; movement over an object is required in order for the machine to detect the object and emit a tone. Alternatively, you can sweep a metal object over a motionless search coil. THIS METAL DETECTOR HAS TWO TYPES OF OPERATING MODES: 1. ALL METAL DETECTION All metals will be detected. 2. DISCRIMINATE, NOTCH, and AUTO NOTCH modes In any of these three detection modes, the detector will emit different tones, depending upon the type of metal present. The characterist