1.High-precision oscilloscope function:A:DST-201 provides a sampling rate of 5MSa/s and an analog bandwidth of 1MHz / B:DST-210 provides a sampling rate of 48MSa/s and an analog bandwidth of 10MHz, 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 various testing needs. 3.Comprehensive multimeter function:DST-201/210 includes a variety of functions such as recording mode, automatic measurement, AC/DC voltage, AC/DC current, resistance, capacitance, diode/continuity, frequency, temperature, data hold and LIVE zero/live line, providing powerful functions for various measurements. 4.Overload protection and portable design:The device is equipped with overload protection and low battery warning for added safety. Its compact and lightweight 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:DST-201/B:DST-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(DST-201) or 48MSa/s(DST-210) Analog Bandwidth: 1MHz(DST-201) or 10MHz(DST-210) Input Impedance: 1M Coupling Mode: AC/DC Vertical Sensitivity: 10mV/div - 10V/div 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 M