JVC DLA-G150CLE Manuel D'instructions page 22

Installing the Projector
Effective Range and Distance of the Remote Control Unit
The remote control unit can be used as either a wireless remote control unit or a wired one.
I
Using as a wireless remote control unit
Aim the remote control unit toward the remote sensor on the front or the rear of the projector.
The operable distance of the remote control unit is about 10 m for direct reception. The remote control unit can be used by
having it reflected on the screen. In this case, the total distance of "A+B" should be about 10 m or less. The operable angles
of the remote control unit are 15° right and left, and 15° up and down.
Projector
20
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15˚
15˚
A
Remote control unit
Screen
15˚
15˚
B