Epson PowerLite S4 User Manual page 36

"Extended" Menu
Sub-menu
Operation Direct Power On:
Sets whether direct power on is enabled ("On") or disabled ("Off").
When you set to "On" and leave the power cable connected to a wall socket, the projector may turn on by itself when electricity is restored after a power
outage.
Sleep Mode:
Sets whether projection stops automatically in the following situations:
- When no image signals are input for approximately 30 minutes.
- When the lens cover is shut and no operations are carried out for approximately 30 minutes.
When Sleep Mode is "On" the power turns off after about 30 minutes.
When Sleep Mode is "Off" the power and the lamp remain on continuously. When you finish using the projector, turn off the power and disconnect the cable.
High Altitude Mode:
When using above an altitude of about 1,500m, set to "On".
Link 21L Sets whether the EMP Link 21L utility software is being used or not.
To enable the EMP Link 21L, turn the projector's power off and wait until the cool down period has finished.
Language Sets the language for the menu system and on-screen messages.
Reset Returns "Display" and "Operation" settings in the "Extended" menu (except for "High Altitude Mode") to their default settings.
If you would like to return all menu items to their default, see "Reset All" on
Function
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