E1020 Ansi Standard 5 latch mortise Inside Dead Bolt SLE4442 IC card,10000 times life Override Mechanical Key Personalized Locking System Classified Access Authorization Lock&System operation record printable. Working tempreture: -50 ~ 80 Power:6 pcs AA Alkaline battery Low Voltage warning Self Error Detecting Card type: Siemens SLE 4442 IC card. Material:Cast Stainless Steel. Finish:Satin Chrome. Mortise:U.S standard,5 latch mortise.