The DLS is a Class IV laser.  Safety precautions are required for safe operation.  

The are two areas of safety that need to be addressed.

The laser itself is regulated by CDRH which is a division of the FDA (yes the Food and Drug Administration).  There are OSHA regulations https://www.osha.gov/dts/osta/otm/otm_iii/otm_iii_6.html and recommendations to operate the laser safely.

We recommend that all OSHA regulations and recommendations be followed whether you are legally bound to it or not.  Safety is our #1 priority.  Please review the above link.

Each DLS system is equipped with a switch that turns off the laser in the event that the main door is opened.  Additionally all other doors are keyed to prevent un-authorized or unintended access.  The biggest danger is not the laser itself; it is the fire hazard.  NEVER LEAVE THE LASER UNATTENDED DURING OPERATION.  CO2 lasers cut with intense heat which can ignite materials not intended for lasers AND/OR if the air assist is disconnected, turned off or is otherwise ineffective.  Each DLS system includes safety glasses, a fire extinguisher and warning signs.