Asus P2M - Manual (Page 13)

LED projector E-Manual 1
Infrared (IR) sensor
The IR sensor detects signal from your LED projector’s remote
control, allowing you to access the LED projector’s control
panel from a distance of up to ten (10) meters and a receiving
angle of 15°.
Rear view
P2B/P2M
HDMI/MHL
9°
12°
HDMI/MHL
P2E