Nikon COOLPIX E900 - Manual (Page 34)

24 First Steps: Taking Your First Photograph
Step 9—Turn the camera off
When you have finished using the camera, be sure to turn the selector dial
to OFF.
The camera is off when the control panel display is blank; if the monitor is
off but the control panel is on, the camera has not been turned off. Check
that the camera is off before putting it away.