Buy on Amazon : http://www.amazon.com/gp/product/B00GD70M52?tag=lottalatte-20 <br /> <br />ZJchao(TM) 1HZ-500KHz DDS Function Signal Generator Module Sine Triangle Square Wave <br /> <br />The main output waveform sine wave and square-wave triangle wave sawtooth wave <br />Maximum output amplitude 10Vpp no-load <br />Output impedance 50?10 <br />Display LCD1602 <br />power supply DC 35-10V
