... Detailed Product Description Can built-in RFID Reader with 2.4G RFID tag, SD card record (optional),Two- ... 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 ... ports and 1 mini USB port GPS vehicle tracker, built-in RFID Reader with 2.4G RFID tag, SD ...