The signal generator DIY kit is a professional product that can generate sine wave or Triple-Cornered wave or square wave or positive and negative sawtooth wave. This is a DIY kit for you to solder and install. Using ICL8038 and high-speed operational amplifier, the accuracy is higher. Can output sine or Triple-Cornered or square wave or forward and reverse sawtooth waveforms. Frequency range: 5Hz-400kHz duty cycle range: 2-95 percent (adjustable) Supports bi-amping, will not block capacitors, and ensure high and low frequency signal distortion. Adjustable frequency and amplitude. The frequency adjustment has coarse and fine adjustment functions. All are through-hole components, easy to install. Power supply voltage: 12V-15V Low distortion true sine wave: 1 percent Low temperature drift: 50ppm or °C Output Triple-Cornered wave linearity: 0.1 percent DC bias range: -7.5V-7.5V Output amplitude range: 0.1V-11VPP (working voltage 12V) Board size: approx. 7.8 x 5cm or 3.07 x 1.97 inch Finished product size: approx. 8.7 x 6 x 1.7cm or 3.43 x 2.36 x 0.67 inch Material:FR4 and Acrylic colour:black Package Contents: 1 x Low frequency signal generator DIY kit Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.