The InstaView function on the Door in Door lets you see if you’re running low on frequently used items like beverages and snacks, without opening the refrigerator door.

Knock twice on the glass to turn the LED light inside the Door in Door on or off.
The LED light turns off automatically after ten seconds.
The InstaView Door in Door function is disabled for 2 seconds after closing the left or right freezer door, and momentarily disabled whilst the ice dispenser is in use.
Knock near the center of the glass. Knocking near the edges of the glass may not activate the InstaView Door in Door function.
Knock hard enough so that the knocking sound is audible.
The InstaView Door in Door function may activate if a loud noise occurs near the refrigerator.
Clean the glass door with a dry cloth. To remove stubborn stains, slightly moisten a clean cloth with lukewarm water or a glass cleaner. Do not spray glass cleaner directly at the glass door.