KKmoon DDS Function Signal Generator Module DIY Kit Sine Square Sawtooth Triangle Wave Provided lots of electronic components for you to do it by yourself. Simple circuit with easily accessible and good components. Delicated high speed (HS) signal output up to 8MHz. DDS signals: sine, square, saw, rev saw ,triangle, ECG and noise. Has two outputs-one for DDS signal and another for high speed aquare signal.