PEACE LIBRARY SYSTEM
Karaoke Machine Kit Contents & Instructions
Class 3R Laser Safety Information
(source: https://www.lasersafetyfacts.com/3R/)
What is a Class 3R Laser?
Class 3R lasers are considered safe when handled carefully. There is only a small
hazard potential for accidental exposure. For visible-light lasers, Class 3R lasers' output
power is between 1 and 4.99 milliwatts.
In the United States, both Class 2 and 3R lasers can be sold as "pointers" or for
pointing purposes. (In Australia, the U.K., and many other countries, laser pointers are
restricted to Class 2 only.)
Class 3R is essentially the same as the Roman numeral "Class IIIa" you may see on
some lasers' labels.
Safe Use Guidance - General
A Class 3R laser is low powered. It normally would not harm eyes during a momentary
exposure of less than ¼ second. This is within the aversion response, where a person
turns away and/or blinks to avoid bright light.
Do not deliberately look or stare into the laser beam. Laser protective eyewear is
normally not necessary. A Class 3R laser is not a skin or materials burn hazard.
However, a Class 3R laser can be a distraction, glare or flashblindness hazard for pilots
and drivers. NEVER aim any laser towards an aircraft or vehicle that is in motion.
This is unsafe and is illegal -- you could be arrested and jailed.
ONLY ALLOW USE BY RESPONSIBLE PERSONS
This is not a toy. Children can safely use Class 3R lasers only with continuous
adult supervision.
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