BNC interface, suitable for general oscilloscope probes AC and DC coupling can be switched, and 1:1 and 1:50 attenuation ratios can be switched Self-contained square wave signal output, duty cycle, frequency, and enable are adjustable, output amplitude is 3.3V, output frequency range is 1KHZ~8KHZ, and output duty cycle range is 0%~97% 10BIT resolution, 1MHZ sampling rate, signal measurement range is 1KHZ~100KHZ (sample code, if a larger measurement range is required, the sample code can be modified for secondary development.) TYPE-C interface power supply with 1.8-inch TFT color display, onboard power indicator, PWM output indicator Output frequency range: 1KHZ~8KHZ Output duty cycle range: 0%~97% Resolution: 10BIT Sampling rate: 1MHZ Signal measurement range 1KHZ~100KHZ Colour:Blue Material:PCB Package Contents: 1 x Simple oscilloscope 1 x Detection 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 picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.