1. 3 in 1: The tester combines a digital oscilloscope, electronic components tester, and signal generator with multiple functions to meet your diverse needs. The oscilloscope features a realtime sampling rate of 10 MS/s and a bandwidth of 500 kHz. Input resistance: 1Ω; Coupling method: AC/DC. The digital multimeter also accurately displays the ESR value of capacitors. 2. Automatic detection: The digital oscilloscope can automatically identify and test various transistors, resistors, inductors, capacitors, and other passive components. 3. Wide application: This 3in1 multifunctional digital oscilloscope, transistor tester, and signal generator can quickly and effectively identify transistors, mixed surfacemounted and leadless components, and preliminarily screen small series components. Suitable for industrial and commercial applications. 4. 6 main waveforms, switchable as desired: sine wave, square wave, pulse wave, triangular wave, sawtooth wave, and DC. 5. HD display and long battery life: The digital oscilloscope is equipped with a 2.4inch TFT fullcolor HD display, clearly visible even in sunlight. It includes a 1500 mAh quality Lipolymer battery with a long battery life of up to 4 hours, making it ecofriendly and portable.