Feature:1. Due to the high precision and stable frequency of the DDS, it is also very suitable for the oscilloscope's scan time calibration factor.2. The square wave output is also suitable for oscilloscope attenuators and probe pulse adjustment.3. The main output waveform are sine wave and squarewave, triangular wave, sawtooth wave.4. Have a filter (can be turn on/off ) to suit the output of sine wave and pulse wave.5. Small size, multiple functions, simple operation, easy to carry.6. Made of high quality material, durable and practical to use.Specification:Item Type: Function Generator Material: ABSColor: As shown in the pictureFrequency Range: Sine wave 1Hz~500kHz (Magnitude is flat up to 200kHz, above 200kHz, the magnitude may drop as frequency increases), other waveforms 1Hz-20kHz with good phase noise and small distortion, if you dont care the phase noise and distortion, it can output full frequency range. Resolution: 1Hz Output Waveforms: Sine wave, square wave, triangular wave, forward sawtooth wave, reverse sawtooth wave.Sinewave Distortion: 1% (frequency <1kHz); 0.5% (frequency >=1kHz) Output Amplitude: Maximum 10V(P-P).Output Impedance: 50 ohm DC Offset: Maximum 10V, can be disabled Internal Filter: For sinewave or pulse, can be turn on/off Power Supply: DC3.5-10V. DC 5V adaptor or 3.7V Lithium battery is recommended.Weight: Approx.172g/6.1oz.Package List:1 x Function Generator 1 x USB Cable1 x Instruction ManualNote:1. Please allow 12cm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.3. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.