Dell P5524QT 55" UHD 4K Touchscreen Commercial Monitor - Manual (Page 36)

36 | Setting up the display
Operating range of the remote control
Point the top of the remote control toward the LCD display’s remote sensor during
button operation.
Use the remote control within a distance of about 7 m from remote control sensor or
at a horizontal and vertical angle of within 30° within a distance of about 7 m.
NOTE: The remote control may not function properly when the
remote control sensor on the display is under direct sunlight or
strong illumination, or when there is an obstacle in the path of signal
transmission.
30° 30°