Multiple waveforms: Generates sine, triangle, and square waveforms to support diverse electronic project needs. Precise control: Frequency adjustable from 1 Hz to 1 MHz with amplitude for detailed circuit analysis and signal testing. Userfriendly tuning: Coarse and fine tuning adjustments plus five resolution settings for straightforward calibration. Power supply flexibility: Compatible with external 9V or 12V DC adapters or a simple 9V battery, enabling operation in various environments. Use scenario 1: Testing audio or signal processing circuits such as filters or amplifiers by applying different waveforms and frequencies to observe responses. Use scenario 2: Prototyping and validating digital or microcontroller interfaces that require stable timing signals across a wide frequency range. Use scenario 3: Portable bench work or classroom demonstrations, where the device can operate from a battery or external power supply for onsite testing.