... serial port onlinePowerful APIExpansive FunctionsRS-485 bus, Wiegand and CAN bus communication interfacesGPRS/GSM,CDMA, 802.11 modules and other wireless ... 100M Ethernet Expanding InterfacesRS-485, Wiegand26/34 Wireless Expandable ModuleGPRS/GSM Module, CDMA, 802.11 Module I/O Interfaces2-channel Relay Output, 2 ... ~ +80°C Humidity 5% ~ 95%(non-condensing) SAAT-F805 4-port UHF RFID Reader