What type of sign is recommended for Class 4 lasers?

For Class 4 lasers, a Warning Sign is recommended because these lasers can pose significant hazards due to their ability to cause severe injury or damage, whether through direct or reflected exposure. Class 4 lasers are characterized by their high power output and can create risks such as eye injury, skin burns, and fire hazards.

Using a Warning Sign effectively communicates the level of risk associated with the use of Class 4 lasers, alerting personnel and visitors to exercise caution when in areas where these lasers operate. The signage should be clear and visible to ensure that everyone in the vicinity understands the potential dangers and follows appropriate safety protocols.

This is crucial in maintaining a safe working environment where the risks are properly acknowledged and managed. The other types of signs, such as Caution, No Sign Required, or Danger, do not convey the specific risk level of Class 4 lasers as effectively as a Warning Sign. Therefore, it is essential to use the recommended signage to ensure safety and compliance with laser safety regulations.