1Three methods of access control machine to open the door: FRID card, password, FRID card+password. 2Ring doorbell is connected to access control machine for facilitating visitors to call the owner. 3Exit button, attach an extra unlock button for one more unlocking method. 4Each keyob has a unique ID number, improve safety. 5No lock can achieve fault protection and no mode function (locked when power is off). Features: 1. Three methods of access control machine to open the door: FRID card, password, FRID card+password. 2. Ring doorbell is connected to access control machine for facilitating visitors to call the owner. 3. Exit button, attach an extra unlock button for one more unlocking method. 4. Each keyob has a unique ID number, improve safety. 5. No lock can achieve fault protection and no mode function (locked when power is off). 6. No lock uses 2-wire non-polarized connection to access, control equipment. 7. Remote controller is divided into a receiver and a transmitter. The receiver is connected to the access control power supply, and the transmitter is used for remote unlocking. 8. Superior ABS and aluminium alloy material, anti-oxidation, anti-wear for maximum durability. Specification: Condition: Material: Metal + ABS Access Control Machine Card type: em-id Frequency: 125kHz Reading speed: