Samsung gx-1 User Manual (en)

Turning the Camera On and Off
ƈ Move the main switch to [ON] position.
The camera will turn on. 
Move the main switch to [OFF] position to turn off the camera.
ƃ Always turn the camera off when not in use.
ƃ The power will automatically turn off when you do not perform any operations within a set period
of time. (Default setting is 1 minute) (p.167)