It can be widely used to detect NPN and PNP transistors, capacitors, resistors, diodes, transistors, MOSFETs, IGBTs, JFETs, thyristors, etc. < /p> Zener diodes can also be detected and have self-calibrating capabilities. Once detected, point the IR remote at the "IR" light " and press the button on the remote control. After the detector is decoded, the data code and infrared waveform will be displayed. One button can automatically detect and stop, or press the multi-function button to shut down the detector. Place the pins of the component in the corresponding area, turn the small handle and the detector will detect it automatically. The results will optionally be displayed on a backlit TFT screen. Instead of the usual black and white display, this detector will display the results in color. Feature: Power Source: Rechargeable Lithium Battery Display : 3.5 x 3 cm TFT screen. Diode range: &lt; 4.5 V Zener diode: Transistor detection area: 0.01-4.5 V Zener diode detection area: 0.01-30 V Triac range: IGT &lt;6mA Capacitance: 25pF-100mF