... configurableCommunicationInterfaceStandard RS232 ,RS485,RJ45Output PortGPIO outputReading RangeDepends on antenna gain,connect 12dBi antenna, the reading distance,above 8 mLED IndicationLED 1 ... working , LED 7 shows power statusSignalBuzzer and LEDAntennaOne-Four antenna ,TNC ConnectorPower SupplyDC+9V(Supply AC/DC power adapter) ... Temp-20°C~+80°CWe also have two-channels antenna UHF RFID card reader: