Made of high quality material, convenient, easy to use and operate, and long service life. Function: Automatically measure NPN and PNP transistors, field effect transistors with N and P channels, diodes (including dual diodes), resistors (including potentiometers), inductors, capacitors, thyristors , batteries (0.1-4.5 V) and other components. Automatically measures the Zener diode (0.01-30 V). With automatic correction function. Infrared waveform display, infrared receiving instruction. Display measurement results via TFT graphics, one-button operation, automatic shutdown (can set the shutdown time), built-in large capacity lithium battery, lithium battery voltage detection , Chinese and English bilingual support SMD transistor tester Technical data: Material: ABS Color: white + gray Battery: 1 * lithium battery, 350mAh (included) Display: 35 * 30mm TFT screen LED range: 4.5 V Zener diode: transistor detection area: 0.01-4.5 V Zener diode detection area: 0.01-30 V Triac range: IGT 6mA Capacity: 25pF-100mF Resistance: 0.01-50 M Inductance: 0.01 mH-20H Battery: 0.1-4.5 V Product size: 88 * 80 * 28mm / 3.46 * 3.15 * 1.10 inch Product weight: 111.5g / 3.93oz Package size: 145 * 120 * 27mm / 5.71 * 4.72 * 1.06in Package weight: 114 g / 4.02 oz Note: Before performing the test, free the electronic components to protect the detector. When the voltage and internal battery is less than 3V, please charge it before use. Use 5V battery or USB port to charge. Packing list: 1 * transistor tester 1 * set of electronic components (sent at random) 3 * test hook (sent at random)