Main features: small size, complete functions, simple operation, easy to carry, with oscilloscope, it can be used for electronic circuit test and debugging, has good accuracy and frequency stability, and is also suitable for square wave output of oscilloscope. It is suitable for attenuator and probe pulse characteristic adjustment of oscilloscope Although it is small, it has many functions and is easy to operate and carry. It can be used with the oscilloscope to test and debug the square wave of the electronic circuit, which is applicable to the adjustment of the oscilloscope attenuator and probe pulse response. It can also calibrate the scanning time factor of the oscilloscope. Model Number: Signal Generator Feature 1: Function Generator Feature 2: Function Signal Generator Feature 3: DDS Signal Generator color:As shown :ABS Package Contents: 1 x signal generator 1 x usb Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.