When this function is in use, the device switches to standby mode, which allows it to be turned off quickly if necessary.
When the device is on, press and hold the ON/OFF (9) button for less than 3 seconds. The display goes blank and the message "Display off".
Press the ON/OFF (9) button briefly to turn on the display.
When you press and hold the ON/OFF (9) button, the display shows the message "Display off" with a countdown. Holding the button down for the duration of the countdown will power the device off completely.