Features: 1) Materials: stainless steel, brass 2) Classic design 3) Meets ANSI standard, with 5 latch mortises 4) With inside dead bolt 5) Using IBUTTON 1991,1994,1990 card, contactless, with long life 6) With override computer emergency key 7) Personalized locking system 8) Classified access authorization 9) System operation records printable 10) Working temperature: -50 - 80°C 11) Power: 6pcs AA alkaline batteries 12) Weight: 3.8kg/pc 13) Dimensions: 350 x 240 x 170mm