?A signal generator is a device that provides electrical signals at various frequencies, square waves, and output levels. It is used as a signal source or excitation source for testing and is widely used in production practices and technologies. ?3-channel PWM output, adjustable frequency, consistent 3-channel frequency output, independent adjustment of duty cycle, suitable for most occasions; ?LCD liquid crystal display frequency and duty cycle, very clear, very convenient to adjust ?The pulse frequency range is wide and the measurement accuracy is high. ?Serial communication; with housing; support for power-down memory.