Arduino Uno RS232 Communication

spycatcher2k:
No

Have you not googled 'Arudino RS232' ? If not, why?

I have googled it, and I was curious for other solutions as the method I found seems overkill for my needs. I merely need to turn the device on and off, I was hoping to cut a power cable and run it through a relay but the controller requires manual reset of the key on interrupt.

vffgaston:
What device?. What for?. How old is it?

High powered laser: https://www.laserglow.com/BLG
Mark bite points on extremely heavy duty forging press
Brand new