【3 IN 1 PROFESSIONAL DESIGN】It integrates digital oscilloscope, electronic component tester and PWM signal generator functions into one,. It has a sampling rate of 10MSa/s, a bandwidth of 500KHz, up to 400V voltage signal test, and a complete trigger function (single, normal, automatic), the measured waveform can be displayed without tedious adjustment, easily cope with measurement tests . 【2.4INCH HIGH DEFINITION BACKLIT SCREEN】This handheld digital oscilloscope transistor tester is designed with a high resolution 2.4 inch TFT screen with adjusting backlight. Better reading experience and easy to use. It can test different functions and support multi interface screen display. With keypad design, it is more convenient to operate and select different test function modes. 【IDENTIFY DEVICE TYPE】The oscilloscope mode can test the signal waveform of the circuit, while Mos test mode can test various types of transistors, which can identify device type, pin polarity, hFE, on state voltage, junction capacitance, resistance, inductive components , etc. Signal generator mode, you can use sine, pulse, triangular or ramp waveform, which can meet your daily testing needs. 【APPLICABLE ITEMS】This oscilloscope probe kit supports PC online operation, which is especially suitable for fast pairing of transistors, identification of mixed face mount and wordless components, and initial screening of small batch components. It can automatically identify and measure various transistors, including NPN and PNP transistors, diodes, double diodes, etc. 【100% QUALITY ASSURANCE】 This oscilloscope signal generator has 5 built in basic waveforms, more waveform data can be obtained per unit time, thus making the waveform more accurate. We are very confident in the quality of this DIY oscilloscope kit, and provide 24 months warranty or refund for it. Please feel free to reach us if you have any questions about your purchase.