Special motor drive system can open the door easily Wrongly input code by three times, hold on five minutes 4 to 6 digits code With emergency keys Powder coating Colors: black (frosted/crinkle), gray (dark/light), sliver (optional) or customized Accessories: 4 x AA alkaline batteries and 2-4 fixing screws. External dimension (W x D x H): 420 x 370 x 200mm Body/door thickness: 2/5mm Net weight: 13kg Gross weight: 13.5kg.