... Gate Reader For Library access control warehouse management 1:4 SMA antenna ports,9dbi Va Vanch VC-420 UHF RFID ... interfaces (RS232, RS485, Wiegand26/34,TCP/IP);4:4 SMA antenna ports, 9dbi circular polarization antenna, the height of antenna ... set by the softwareRF output20-30dBm adjustableAntenna connection qty’4 SMA antenna ports, 9dbi circular polarization antenna, the height of antenna ...