... Range:above 8m One-Four antenna ,TNC Connector MK-TS-304 UHF Four-Channels readerSpecification:Model NoMK- ... ,RS485,RJ45Output PortGPIO outputReading RangeDepends on antenna gain,connect 12dBi antenna, the reading distance,above 8 mLED ... antenna ,TNC ConnectorPower SupplyDC+9V(Supply AC/DC power adapter)Size160mmx186mmx50mmWeight2KGOperating Temp-20°C~+80°CWe also have two-channels antenna UHF RFID ...