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Check the listing for details. LCD Dislay Tester Transistor Diode Capacitance ESR Meter Signal Generator DIY. Condition: New. Listed at 26.94 USD. Automatically detects NPN and PNP transistors, FET, diodes, dual diode, thyristor, SCR, Automatic identification of the transistor pinout. 20-Certified Slabs Storage Box Plastic Case Coin Holder Organizer for PCGS NGC f.