Five precision resolution levels for repeatable waveform output, enabling accurate signal generation across different applications. Produces sine, triangle, and square waves for versatile testing. Frequency range: 1 Hz to 1 MHz with coarse and fine tuning for quick setup and precise adjustments. Coarse adjustment plus fine tuning allow fast configuration and stable frequency control for experiments and measurements. Power options: wide supply range suitable for DC 9-12 V external power supply or a 9 V battery (not included). 2-3 use scenarios: - Electronics lab: generate reference signals to test amplifiers, filters, and ADC/DAC circuits. - Educational demos: illustrate waveform shapes, frequency relationships, and timing in classroom or lab settings. - Circuit debugging: verify timing, pulse response, and signal integrity in microcontroller and digital logic projects. Compatibility and performance: simple, flexible power compatibility, stable waveform outputs across the stated frequency range, suitable for hobbyist and professional testing environments.