... connect Detailed Product Description Can built-in RFID Reader with 2.4G RFID tag, SD card record (optional),Two- ... .Can built-in RFID Reader with 2.4G RFID tag, SD card record (optional) 2.Can connect external RFID Reader, ... O port2 analog input ports, 6 digital input ports(2 positive input, 4 negative input), 3 digital output ... vehicle tracker, built-in RFID Reader with 2.4G RFID tag, SD driving record