VIEWSONIC CD5233 - Manual (Page 15)

ViewSonic 13 CD5233
Operating Range for the Remote
Control
Point the top of the remote control towards the LCD monitor's remote
sensor during button operation.
Use the remote control within a distance of about 7 m/ 23 ft from the
front of the LCD monitor's remote control sensor and within a
horizontal and vertical angle 30° with a distance of about 3 m/ 10 ft.
Handling the remote control
* Do not subject to strong shock.
* Do not allow water or other liquid to splash the remote
control. If the remote control gets wet, wipe it dry
immediately.
* Avoid exposure to heat and steam.
* Other than to install the batteries, do not open the remote
control.
NOTE:
The remote control system may not function when direct sunlight or
strong illumination strikes the remote control sensor of the LCD
monitor, or when there is an obstacle in the radiation path.