... module design, meet your flexible demands.WIFI build-in and modules of1D barcode/2D barcode,LF/HF/UHF RFID, GPRS, ... 1GB ROM, supports offline data cacheInterfaceUSB2.0/RS232Screen3.2-inch TFT-LCD (240*320 QVGA),touch screen, 65K colors Software Operating ... (Optional)Bluetooth, class 2,transmitting range:3~5 meters Data Modules (Optional) RFIDRFID Frequency(LF) 125KHz/134.2KHzProtocol Standard(LF ...