precision signal generator in a DIY kit and shell Generates sine, triangle, and square waves with reliable accuracy and precision, ideal for bench testing, circuit debugging, and educational use. Adjustable frequency and amplitude: output frequency from 1 Hz to 1 MHz, with adjustable amplitude to match your test needs. Five accuracy resolution: five frequency accuracy settings with coarse and fine adjustment options for precise waveform control. Wide power supply options: compatible with external 912 V DC power supply or a 9 V battery, offering flexible and portable operation. Key benefits Clear, stable waveforms for accurate measurements and repeatable tests. Easy tuning with both coarse and fine controls to quickly dial in the exact signal you require. Flexible power options support both lab setups and field or classroom use. Applications and use scenarios Electronics lab and amplifier testing: generate precise test signals to characterize frequency response, distortion, and system behavior. Microcontroller and ADC/DAC calibration: provide stable reference waveforms across a wide frequency range for validation and firmware development. Educational demonstrations and prototyping: teach waveform concepts and facilitate handson experiments with signal generation. Consistency with original specifications DIY kit and shell included Sine, triangle, and square wave output Frequency range: 1 Hz to 1 MHz Amplitude adjustable Five frequency accuracy resolution with coarse and fine adjustments Power: external 912 V DC or 9 V battery