Uses ICL8038 and high-speed operational amplifier. Outputs sine, triangular, square, forward, and reverse waveforms. Frequency range: 5Hz~400kHz. Duty cycle range: 2~95% (adjustable). Supports dual power amplifiers without blocking capacitors. Frequency and amplitude are adjustable. Frequency adjustment features coarse and fine tuning. Components are through-hole. Appearance and colors of components may vary by batch without affecting use. Power supply voltage: 12V~15V Frequency range: 5Hz~400KHz (adjustable) Duty cycle range: 2~95% (adjustable) Low distortion sine wave: 1% Low temperature drift: 50ppm/°C Output triangular wave linearity: 0.1% DC bias range: -7.5V~7.5V Output amplitude range: 0.1V~11VPP (working voltage 12V) Interfaces: 1. Output rectangular wave 2. SIN/TA: Output sine wave or triangular wave 3. GND: Grounding 4. Potentiometer functions: Duty cycle, frequency regulation, signal DC bias, amplitude adjustment Note: This kit consists of loose parts and is not a finished product. Suitable for scientific research and experiments. Assembly and debugging require relevant knowledge and skills. Color: Black Material: FR4 + electronic components Package Contents: 1 x Signal Generator DIY Kit (without shell) Note: Only the items listed in package contents are included. Other products are not included. Actual color may vary due to light and display settings.