Mine has been packed away since I got myself the Flair Espresso.
And not sure what you mean by standby.
But I recall that it looked like it was going in to some sort of low power mode when not used for a few minutes. The light goes a bit dim for a few seconds and it will power up again if any of the buttons are pressed in that short space of time.
But it completely powers down within only a few seconds of the light dimming.