Thoughts on the 'need' factor of a main line surge protector

I especially like the Prior Error Code of the HW50C, meaning that when I return to the RV I can check it and then take be pro active to CG power.

Prior Error as in it occured and corrected since there is no current error.

Like low voltage occurred at least once due to many A/Cs running.

And with the remote inside - so easy to check.