It can be widely used to detect NPN and PNP transistors, capacitors, resistors, diodes, triodes, MOSFETs, IGBTs, JFETs, Triacs, etc. It can also detect the Zener diode and has the function of self-calibration. After detection, align the infrared remote control with the ""IR"" light, then press the button on the remote control. If the detector decodes it, it will display the data code and infrared waveform. One button is enough to detect and stop automatically, and you can also press the multi-function button to close the detector. Put the pins of the component in the corresponding area, then dial the small handle and the detector will test it automatically. The results will finally be displayed on the backlit TFT screen. Unlike the usual black and white display, this detector will display the results in color. Features: Diode range: