Power Saving Mode
5
The EF-W1 has a power saving mode to prevent battery drain.
After 30 seconds from idle, the LCD will go dark and it will turn
off in sync with the camera power. In the power saving mode,
the pilot lamp blinks every 2 seconds. Press any button to exit
power saving mode and the LCD will re-illuminate. If you do not
operate the unit for 60 minutes, the power turns off.