* Features: 1) Materials: stainless steel, brass 2) With unique designed handle 3) Meets ANSI standard, with 5 latch mortises 4) With inside dead bolt 5) Uses SLE4442 IC card; 10,000 times 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癈 11) Power: 6pcs AA alkaline batteries 12) Weight: 3.8kg/pc 13) Dimensions: 350 x 240 x 170mm