Made of high quality materials, 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 Zener diode (0.01-30 V). With automatic correction function. Infrared waveform display, infrared receive instruction. Display measurement results via TFT graphics, a 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 Tester of SMD transistors 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 zone: 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 * 1.06inch 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) Store tips: 1. The size is manually measured, please allow the error (1-3cm). 2. Due to the different monitor pixels, there may be some color difference, please refer to the actual product. 3. After receiving the parcel, if any dissatisfaction, please contact me first, do not leave negative feedback easily, thank you and have a nice day.