Mustek S40 - Manual (Page 8)

6.
Battery Installation
Power Up
1. Open the battery cover.
2. Insert batteries in correct polarity(+ and -) as shown on the
inside
of the battery door.
3. Close the battery cover.
Turning the Power ON/OFF
1. Push the Power button to turn the camera on.
2. To turn the camera OFF, press the Power button until the camera beeps
and the LCD screen goes blank.
Sleep Mode
1. When the camera is ON and is not used for 60 seconds, it will
automatically enter sleep mode to save battery power.
2. To re-activate the camera from sleep mode :
Press the Power button once.
The camera is ready to take pictures.