Supports RS-485 protocol, Wiegand (W26/W34) protocol, and OSDP protocol Build-in M1 and EM card reading module (Frequency: 13.56 MHz&125 KHz) Built-in buzzer for identifying the reading status Supports online upgrade Supports multiple authentication methods such as card swiping, PIN, QR code, bluetooth, etc Supports touch panel for operation Supports occlusion detection, with bluetooth, it can realize door open via waving hands