... most successful.Features and Functions:(1) Most common frequencies are Copper, Silver, Gold, P.T, Tin, Jewel, Aluminum(2) Detecting Range ... ) of the transmitter has Seven LED’s (channel indicator lights for Copper, Silver, Gold, P.T, Tin, Jewel, Aluminum) across the top ... 1000m) showing 10 different detecting range. And has one knob for selecting the detecing RangeAlso, the face of the transmitter has ...