Cautions for use The capacitor shall not be tested without discharge The inductance of the transformer cannot be tested Don't test online with electricity Do not hook three hooks onto the circuit board for testing Do not test live circuit boards Otherwise, the tester will be burnt down. Burning the tester is the buyer's reason. When the voltage and internal battery are below 3V, please charge before use. Please use 5V battery or USB port to charge. Product Description This is a cost-effective and widely used transistor detector. Can be used to detect NPN and PNP transistors, capacitors, resistors, diodes, triodes, N-channel and P-channel MOSFETs, thyristors, batteries, etc. Can also be used to detect infrared waveforms. Features: Can be widely used to detect NPN and PNP transistors, capacitors, resistors, diodes, transistors, N-channel and P-channel MOSFETs, IGBTs, JFETs, thyristors, batteries, etc. . Zener diodes can also be detected and have a functional self-calibration. After the detection is completed, point the infrared remote control at the "IR" light, and then press the button on the remote control. If the detector decodes successfully, the data code and infrared waveform will be displayed. One-key operation, automatic detection and shutdown, you can also press the multi-function button to turn off the detector. Place the pins of the components in the corresponding area, turn the small handle, the detector will automatically detect, and the final result will be clearly displayed on the backlit TFT screen. Instead of the usual black and white display, this detector will display the results in color. Specification: Power Mode: Rechargeable Lithium Battery Display: 3.5*3cm TFT screen Diode Range: < 4.5V Zener diode: transistor detection area: 0.01-4.5V Zener diode detection area: 0.01-20V Triac Range: IGT < 6mA Capacitance: 25pF- 100mF Resistance: 0.01-50M Inductance: 0.01mH-20H Battery: 0.1-4.5V Product chip: High-performance mcu Package Included: 1* Multifunctional TFT Transistor Tester 1*Electronic components set 1*Cable 3*Test hook