... strictly follow the national security product standard .F2 is suitable for the entrances and exits of office, factory ,hotel , ... Keyboard and Display: LCD with 80 character and figure keypad· Power: 12 V· Identification speed: <=2 seconds· FRR: <=1%· FAR: ... Standard Voltage is 12VDC when FinishedMOV Provides Reverse Current ProtectionSuitable For Wooden Door, Glass Door, Metal Door, Fireproof DoorLED ...