This is a cost-effective and widely used transistor detector. You can use it to detect NPN and PNP transistor, capacitor, resistor, diode, triode, N-channel and P-channel MOSFET, triac and battery etc. It can also be used to detect infrared wave forms. Features: 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. It also can detect zener diode and has the function of self-calibration. After detection, array the infrared remote control with the "IR" light, then pre the button in the remote control, if the detector succefully decode it, it will display the data code and infrared wave form. One button operation, automatically detect and shutdown, and you can pre the multi-functional button to close the detector too. 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. Not like the usual black and white display, this detector will show results in color. Specifications: Power Mode: Rechargeable Lithium Battery Display: 3.5 * 3cm TFT Screen Diode Range: < 4.5V Zener Diode:Transistor Detect Area: 0.01-4.5V Zener Diode Detect Area: 0.01-30V Triac Range: IGT < 6mA Capacitance: 25pF-100mF Resistor: 0.01-50M Inductance: 0.01mH-20H Battery: 0.1-4.5V Item Size: 8.8 * 8 * 2.8cm / 3.47 * 3.15 * 1.10in Item Weight: 111.5g / 3.94oz Package Size: 14.5 * 12 * 2.7cm / 5.71 * 4.73 * 1.06in Package Weight: 114g / 4.02oz Package List: 1 * Transistor Tester 1 * Electronic Component Set(Send Randomly) 3 * Test Hook(Send Randomly) Note: Before testing, please discharge the electronic components to protect the detector. When the voltage and the inside battery is under 3V, please charge it before usage. Please use 5V battery or USB interface to charge. You can click the right link to see the user manual :