Pwm Signal Generator,Dual Mode Function Frequency Generator Adjustable 1-150kHZ Pulse Square Rectangular Wave Signal Module Driver Controller LCD Display with Case

Worked perfect to control a treadmill motor by pwm 20hrtz signal to board then duty cycle controls speed. Very happy

The faceplate on these is not rigid, but the signal is quite accurate and the electronics seem up to the task.

While it does produce a square wave of the desired frequency, the duty cycle is invented and the max amplitude is just under 2v. The v- and v+ pins only offset the signal, not increase the amplitude of the signal.

This thing does a good enough job. If you need a very clean signal, consider other options. For me, it worked fine.

I used it to control a treadmill DC motor on my home made 72" belt sander it worked as intended. Great price.

The media could not be loaded. I used this PWM to control the RPM on a revolving weld table via stepper driver also used it with a with a similar style timer to control the on-off time on a wire feed welder.Both work great together, I recently ordered another timer to control the PWM in order to synchronize both the PWM and first timer.