1. It can be widely used to detect NPN and PNP transistor, capacitor, resistor, diode, triode, N-channel and P-channel MOSFET, IGBT, JFET, triac and battery etc. 2. One button operation, automatically detect and shutdown, and you can press the multi-functional button to the detector too. 3. Put the pins of component in corresponding area, then dial the little handle and the detector will test it automatically, finally the results will display on the back light TFT screen clearly. Display: 1.8 inch TFT Screen Diode Range: less than 4.5V Zener Diode : Transistor Detect Area: 0.01-4.5V Zener Diode Detect Area: 0.01-30V Triac Range: IGT less than 6mA Capacitance: 25pF-100mF Resistor: 0.01-50M ohm Inductance: 0.01mH-20H Battery: 0.1-4.5V Mode: Rechargeable Lithium Battery (Include) Size: Approx. 90 x 50 x 25mm colour: as shown Material: plastic Package Contents: 1 x Multi-functional TFT Transistor tester 1 x Electronic component set(random colors style, 't accept the specified color style) 3 x Test hooks 1 x Cable Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.