ViewSonic VS19513 User Manual page 19

Key
2 + 3 Press and hold the keys to lock/unlock the
When the menu appears on the screen, continue holding both
keys for 10 seconds to lock/unlock the
If the Power
the screen:
Description
Power Lock/Unlock
Locking Power Button
Press and hold for 10s
to lock power
button is locked, the below message will appear on
Power Lock/Unlock
Power Button Locked
19
Power button.
Power button.
3