... high quality 433 MHZ antenna 2.wireless transmitter and receiver 3.Impedance :50 V.VSWR ;1.5 4.Polarization Vertical 5. product name :high quality ... customers first" as it purpose ,To provides customer more high-quality &sincere services, finally we reach win-win status with ... customers first" as it purpose ,To provides customer more high-quality &sincere services, finally we reach win-win status with ...