Small size, multiple functions, simple operation, easy to carry. With an oscilloscope, which can be used in electronic circuit experiment and debugging, the frequency characteristics of audio amplifier and response of test and measurement. Due to the good of DDS and frequency stability, is also very suitable for oscilloscope sweep time calibration factor. wave output also suit for oscilloscope attenuator and probe adjustment, etc The main output waveform : sine wave and -wave, Triangular wave, wave. Maximum output amplitude : +/- 10Vpp (no-load) Output impedance : 50Ohm+/-10% Dc bias : +/- 10V (no-load) Display : LCD1602 Resolution : 1 Hz supply : DC 3. 5-10V Output frequency range: Sine wave : 1Hz-500KHz -wave : 1 Hz - 20kHz (the valid range) Triangular wave : 1 Hz - 20KHz (the valid range) wave : 1 Hz - 20kHz (the valid range) Colour: white Material: metal Package Contents: 1 x Function Signal Generator 1 x USB Adapter Cable Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.