NEC PA1705UL-W Installation Manual page 22

Important Information
• About the precautionary zone
By providing a precautionary zone or physical barriers, it is possible to prevent human eyes from
entering the hazard zone.
When the manager of the projector (operator) cannot prevent spectators from entering the hazard
zone such as in public facilities, it is recommended to secure a space of 1 m or more from the haz-
ard zone as "the precautionary zone" for the safety of the spectators. When installing the projector
overhead, it is recommended that the distance between the floor and the hazard zone be at least
3 m in the vertical direction.
In the United States, provide a horizontal distance of 2.5 meters from the hazard zone.
When installthe projector overhead, provide a vertical distance of 3 meters from the floor to the
hazard zone.
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