The buttons to turn the lights on and off are usually located directly on the overhead console on most narrowbody aircraft, while on most widebody aircraft, the buttons are usually found together with the in-flight entertainment (IFE) controls, which may be on the armrests, the seat backs, or a touch-screen interface. A call button, that, when pressed, alerts a flight attendant on board to attend to the passengers in the row with the pressed button (a quiet audio signal in the galley and various lights alert flight attendants). As with the reading light buttons, the call button is usually located directly on the overhead console on most narrowbody aircraft, while they are found together with IFE controls on most widebody aircraft.