This is a RFID/DIGITAL CONTROL KEYPAD for Access Control System with tamper switch can be connected to security alarm system. This Access Control Keypad can be connected with door-open button and doorbell. Simple programming, easy operation Access Control Keypad. Adopt function steady card reader of blocks. Keypad locks for 30 seconds after 10 false entries. Non-volatile memory in power failure. Tamper switch of this Door Entry Keypad can be connected to security alarm system. This Access Keypad won't let you down!