It can be widely used to detect NPN and PNP transistors, capacitors, resistors, diodes, triodes, N-channel and P-channel MOSFETs, IGBTs, JFETs, triacs, and batteries, etc. It can also be used to detect infrared waveforms. It can also detect Zener diodes and has a self-calibration function. After detection, point the infrared remote control at the "IR" light, then press the button on the remote control. If the detector successfully decodes it, it will display the data code and infrared wave signal. One-button operation, automatic detection and shutdown, and you can also press the multi-function button to turn off the detector. Place the component pins into the corresponding area, then turn the small handle, and the detector will test it automatically. Finally, the results are clearly displayed on the backlit TFT screen. Unlike the usual black and white display, the detector shows colored results. Note: The electronic component package is random and cannot be selected. Material: ABS Color: White Package Contents: 1 x Multifunction Transistor Tester 1 x Set of Electronic Components 1 x Cable Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture to be slightly different from the real one. The allowed measurement error is +/- 1-3 cm.