VIEWSONIC VS11287-1M - Manual (Page 10)

3. Remote control:
Remove the cover of the battery compartment. Insert the 2 batteries
supplied (Type AAA 1.5V).
ViewSonic 8 N2060w
CAUTION
Only use the specified AAA batteries.
Do not mix new and old batteries. This may result
in cracking or leakage, which may pose a fire risk or
lead to personal injury.
Insert batteries according to the (+) and (-) markings.
Inserting the batteries incorrectly may result in
cracking or leakage, which may pose a fire risk or
lead to per-sonal injury.
Dispose of batteries in accordance with local laws
and regulations.
Keep batteries away from children and pets.
If the remote control will not be used for an extended
period of time, remove the batteries.