A door is formed from a door leaf (1) and its door frame (2) intended to be inserted into a wall, the door frame (2) comprising power supply means (3) at least sequentially in electric contact with electrical connection means (4) housed in the door leaf (1), the door leaf (1) comprising at least one lighting device (5) electrically powered by the power supply means (3) of the door frame (2) via the connection means (4) in the door leaf (1). The door leaf (1) and/or the door frame (2) house at least one battery electrically connected, on the one hand, to the connection means (4) at its input and, on the other hand, to said at least one lighting device (5) at its output by at least one loop including a switch. One application is for openings in the field of real estate fixtures and fittings.