SEWS-Mini Simple Oscilloscope With 18 Inch TFT Color Display Waveform Measurement Frequency Meter Square Wave Output _x000D_ 1.BNC interface, suitable for general oscilloscope probes. _x000D_ 2.AC and DC coupling can be switched, 1:1, 1:50 attenuation ratio can be switched _x000D_ 3.Built-in square wave signal output, duty cycle, frequency, enable adjustable, output amplitude 3.3V, output frequency range 1KHZ~8KHZ, output duty cycle range 0%~97%. _x000D_ 4.10BIT resolution, 1MHZ sampling rate, signal measurement range 1KHZ~100KHZ (sample code, if you need a larger measurement range, you can modify the sample code for secondary development.) _x000D_ 5.TYPE-C interface power supply _x000D_ _x000D_ 6.1.8-inch TFT color display _x000D_ 7.Onboard power indicator, PWM output indicator _x000D_ Colour:Blue _x000D_ Material:PCB+electronic components _x000D_ _x000D_ Package Contents: _x000D_ 1 x Oscilloscope _x000D_ 1 x Probe detection line _x000D_ _x000D_ Only the above package content, other products are not included. _x000D_ Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_