SainSmart DDS Function Signal Generator Module Sine + Triangle + Square Wave + USB Cable (1HZ-500KHZ) The main output waveform : sine wave and square-wave, triangle wave, sawtooth wave Maximum output amplitude: 10Vpp (no-load) Output impedance :5010%; power supply: DC 3.5-10V Display: LCD1602 1-year warranty and technical support dedicated from SainSmart