This device is an oscilloscope, used to display and analyze electrical signals in the form of waves, which helps in inspecting electronic circuits and detecting faults. This model supports 5 measurement channels simultaneously, with USB connectivity. The Wi-Fi version can connect to a computer or phone wirelessly. Key uses include: * Measuring electrical voltage. * Measuring frequency. * Displaying the electrical waveform. * Inspecting sensors and signals in cars. * Repairing and maintaining electronic devices such as circuit boards, power supplies, and digital circuits. * Comparing multiple signals simultaneously using the five channels, which is useful when troubleshooting complex faults. Practical examples: * Inspecting crankshaft or camshaft sensor signals in a car. * Measuring PWM pulses in controllers and motors. * Verifying the output of a power supply. * Analyzing microcontroller signals like Arduino and ESP32. If you work in car or electronics maintenance, this device is one of the most important diagnostic tools because it shows the signal's shape, not just its value like a multimeter.