precision dualchannel oscilloscope: designed for accurate waveform capture with 50 MSa/s sampling rate and 10 MHz analog bandwidth, enabling clear observation of both periodic analog signals and nonperiodic digital circuits. Integrated signal generator: builtin signal generator for quick test signal output, enabling faster troubleshooting and development without needing separate equipment. Wide voltage measurement range: measures up to ±400 V with selectable X1 or X10 attenuation, providing flexibility for electronics DIY, mobile phone , automotive diagnostics, and appliance maintenance. Compact and longlasting design: 3.2inch LCD display with 320x240 resolution, 2500 mAh battery for 4.5–6 hours of operation, and 20K memory depth for waveform compression/expansion up to 165x. Applications: Electronics DIY and prototyping: diagnose power supplies, microcontroller interfaces, and sensor circuits with reliable waveform observation. Field service and automotive diagnostics: onsite measurements of vehicle electronics, sensor outputs, and signaling patterns. Mobile device and appliance : use the integrated signal generator for test signals and observe responses to speed up diagnostics without extra gear.