Made of high quality materials, convenient, easy to use and use, 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 Zener diode (0.01-30V). With automatic correction function. Infrared waveform display, infrared receiving instruction. Display measurement results via TFT graphics, one-button operation, automatic shutdown (can set 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 display LED range: 4.5V Zener diode: transistor detection area: 0.01-4.5V Zener diode detection area: 0.01-30VTriac Range: IGT 6mA Capacity: 25pF-100mF Resistance: 0.01-50 M Inductance: 0.01mH-20H Battery: 0.1-4.5VProduct size: 88*80*28mm/3.46*3.15*1.10in Product weight: 111.5g / 3.93oz Package size: 145*120*27mm/5.71*4.72*1.06in Package weight: 114g / 4.02oz Note: Before performing the test, release the electronic components to protect the detector. When the voltage and internal battery is lower 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 (randomly sent) 3 * Test Hook (randomly sent)