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 waveforms. 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 can also detect Zener diode and has self-calibration function. After detection, align the infrared remote control with the "IR" light, then press the button on the remote control, if the detector decodes successfully, it will display the data code and infrared waveform. One button operation, automatically detect and shut down, and you can press the multi-function button to also close the detector. Put the component pins into the corresponding area, then dial the small handle and the detector will test automatically, finally the results will display on the backlight TFT screen clearly. Not the usual black and white display, this detector will display the results in color. Features: Power supply mode: rechargeable lithium battery Display: 3.5*3cm TFT screen Diode range: