LG CineBeam PH450U Owner's Manual page 29

• When using the remote control, the optimal operation
range is 6 meters or less (left/right) and within a 30
degree arc of the remote control IR receiver.
• For seamless operation, do not block the IR receiver.
•
When you carry the remote control in the portable
bag, make sure that the buttons on the remote control
are not pressed by the projector, cables, documents
or any other accessories in the bag. Otherwise, it may
significantly reduce the battery life.
29
30° 30°