Canon 420 EZ User Manual
Page 13
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SE (Save-Energy) Function
Turn the main switch OFF ( “ O ” mark) when
flash photography is finished to prevent un
necessary
battery
consumption.
The
Speedlite 420EZ has a built-in SE (Save-
Energy) function that automatically turns off
power when the flash is not used for approx
imately five minutes (test firing, preflash,
etc.). All panel displays start blinking approx
imately 30 seconds before SE operation.
Press the ready lamp to re-start the flash.