Precautions and Responsibilities

Precautions specified in IEC 60825-1 and FDA CFR Title 21 Part 1040 are as follows:

Requirement	Class 2	Class 2M	Class 3R	Class 3B
Remote interlock	Not required	Not required	Not required	Required*
Key control	Not required	Not required	Not required	Required – cannot remove key when in use*
Power-on delays	Not required	Not required	Not required	Required*
Beam attenuator	Not required	Not required	Not required	Required*
Emission indicator	Not required	Not required	Not required	Required*
Warning signs	Not required	Not required	Not required	Required*
Beam path	Not required	Not required	Terminate beam at useful length	Terminate beam at useful length
Specular reflection	Not required	Not required	Prevent unintentional reflections	Prevent unintentional reflections
Eye protection	Not required	Not required	Not required	Required under special conditions
Laser safety officer	Not required	Not required	Not required	Required
Training	Not required	Not required	Required for operator and maintenance personnel	Required for operator and maintenance personnel

*LMI Class 3B laser components do not incorporate these laser safety items. These items must be added and completed by customers in their system design. For more information, see Class 3B Responsibilities.