MSA Gallet radio plug

###update 28-09-2019,
I visit recent a training centre in the Netherlands with the plug mounted on the helmet. I happy to tell the plug survived the day! Even in a container to train a Flashover with temps between 200c - 500c. The plug does not seems have any damage.

However, the plug needs to be printed with a minimum infil off 50% due to witstand the high temperatures.

Have safe fires with it!

------------------------------------------------------------------------------------------