This is a very good question and it is answered in the Solutions Planning Guide (SPG) for the Advanced Punch Pro. In the SPG it states the following...
Is there somewhere where I can find the decbles created when the punch unit is actually punching? We are in a warehouse environment with concrete floors and no sound deadening materials like ceiling tiles or drywall. I want to make sure we are not going to be damaging our ears from prolonged use.
