The recall involves the Safety 1st SmartLight Stair Gate with model number 42111, which is printed on a sticker under the handle panel. The gates, which were manufactured before December 31, 2007, are white metal with a gray handle and a motion sensor nightlight that illuminates on approach. The manufacture date is located below the gate’s handle as a date wheel imprinted in the plastic; an arrow indicates the month, and the year is stamped inside the circle. The manufacture date is also printed on a sticker inside the battery door.