... display keypad Open method by User code, master code,,and key override Fits most laptops,carpeted floor,bolt-down kit and 4pcs ... user code (3-6 digits), master code (6 digits), metal override key Tempering-proof: 5 minutes keyboard block after 3 faulty entries ... through 4 Batteries AA size User manual sticky label Manual override Model Ext Dimensions mm Package Dimensions mm Body/Door (mm ...