SainSmart Low Frequency DDS Function Signal Generator Module Sine Square Triangle Wave Brand new and high quality. Operating voltage: DC 7V-9V. DDS frequency range: 1HZ-65534Hz. High-speed frequency (HS) output up to 8MHz. DDS signal amplitude of the offset amount can be adjusted separately by two potentiometers. DDS signals: sine wave, square wave, sawtooth, reverse sawtooth, triangle wave, the ECG wave and noise wave. 1602 LCD menu. With keypad area onboard for easy control of frequency and wave type. Step: 1, 10, 100, 10000Hz. The power automatically restore the last used configuration. Offset: 0.5pp-5Vpp. Amplitude amount: 0.5Vpp-14Vpp. Color: green, white. Size: 12cm x 8cm x 3cm. 1-year warranty and technical support dedicated from SainSmart