1.High-precision oscilloscope function:A:-201 provides a sampling rate of 5MSa/s and an analog bandwidth of 1MHz, ensuring waveform analysis. It is equipped with voltage protection up to 400V, suitable for a wide range of applications. 2.Multi-function signal generator function:Supports 13 waveforms with a frequency range of 0-10KHz and an adjustable output voltage of 3V. The frequency, amplitude and duty cycle can all be fine-tuned to meet testing needs. 3.Comprehensive multimeter function:-201/210 includes a variety of functions such as recording mode, automatic measurement, voltage, current, resistance, capacitance, diode/continuity, frequency, temperature, data hold and LIVE zero/live line, providing powerful functions for measurements. 4.Overload protection and portable design:The device is equipped with overload protection and low battery warning for added safety. Its compact and design, as well as a 2.8-inch TFT color display, ensures clear and intuitive visual effects. Built-in 3000mAh rechargeable battery supports up to 15 hours of standby time, perfect for mobile use. 5.User-friendly and multifunctional:A:-201/B:-210 is powerful and flexible, easy to operate, and is an ideal multifunctional instrument for professionals, factories, schools, hobbyists and home users. Backlight: Backlight brightness adjustable Charging Power: TYPE-C (5V 1A) Battery: 3000mAh Languages: Chinese / English Real-time Sampling rate: 5MSa/s(-201) Analog Bandwidth: 1MHz(-201) Input Impedance: 1M Coupling Mode: Vertical Sensitivity: 10mV/ - 10V/ Vertical Displacement: Adjustable with indicators Level Time Base: 500ns - 20s Trigger Mode: Auto / Normal / Single Trigger Type: Rising Edge & Falling Edge Trigger Level: Adjustable with indicators Waveform Freeze: Support (HOLD function) Auto Measurement: Maximum, Minimum, Average, RMS, VPP, Frequency, Period, Duty Cycle Color: As Shown Material: plastic Package Contents: 1 x Electronic Repair Detection Tool Kit(Due to different product batches, the words on the product may be different, which not affect the use) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.