Power Supply: 6AA Batteries or 9V Twin Battery, duration of 10000 times (about 1 yesrs) Static Load: <15uA, Working Load: 200mA~400mA Locking records: 250pcs Weight: 3.8kg, Size: 240L?78W ?17D (mm) Temperature: -50 ~ 80 Humidity: 20% ~ 80% Override Mechanical Key: Computer key Suitable Door Type: Wooden Door, Fire-proof, Metal door Interface: PMS interface Material: Moisture proof , Fire retardant Card type:Siemens SLE4442 IC card. Material:Cast Stainless Steel Finish: Satin Chrome. Mortise:U.S standard,5 latch mortise.