Pettec Antibark Vibra Trainer Operating Manual page 19

which no sound or vibration signal can be triggered. During this
time an "E" flashes in green on the LED display. As soon as that
signal disappears from the LED display, the Antibark Vibra Trainer
will return to normal operation. However, by pressing any key,
the sleep mode can be interrupted and the Antibark Vibra Trainer
can be switched back into normal operation before the idle time
has elapsed.
To switch off the Antibark Vibra Trainer, press the power button
for several seconds until a double-beep sounds.
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