[Premium Material]:plastic housing material, drop proof and shockproof. The printed circuit board adopts high-cost immersion gold process, with high antioxidant corrosion resistance, stable working performance and high reliability. [3in1 Design with 3.5 Inch Color Display]:This product ingeniously integrates digital oscilloscope, multimeter, and signal generator functions into one device. 3.5-inch color display, screen readings are clearer, and the visual color is richer. Data visualization design, the user-friendly interface design and operation mode, so that users do not need to spend a lot of time to learn to quickly get started, improve work efficiency. [Signal Generator]:Equipped with a built-in signal generator function, with automatic waveform measurement and recognition function, no need to display the measured signal waveform clearly without measured signal waveform. [High-precise Multimeter]:High precise multimeter with true RMS measuring function. Supports the test of DCvoltage, ACvoltage, DCcurrent, ACcurrent, resistance and capacitance. [Digital Oscilloscope Function]:The real-time sampling rate of the oscilloscope is up to 280MS/s, which can capture more signal details and provide more accurate measurement results. 50MHz bandwidth can meet the testing needs of most electronic devices, both high-frequency and low-frequency signals can be easily coped with. More Oscilloscope functions of overclocking function, afterglow mode, and XY mode, making measurements more cost-effective. [Intelligent Anti-burning]:Full-grade overload protections, built-in intelligent anti-burn chip, and double ceramic fuses, to prevents the misuse of burn meter, safer to use. The built-in high-voltage protecting module can effectively prevents damage to the oscilloscope from high-voltage currents caused by misuse or equipment failure, improving the service time