S-4913T/R is the broadcast industry wireless system, includes the S-4913T transmitter and S-4913R receiver, with WHDI (OFDM) technology, supports uncompressed HDMI wirelessly transmitted in 200 meters scale, and with less than 1ms latency, which is widely used in on-site shooting and director monitoring. The transmitter S-4913T takes 1 HDMI input, and the receiver S-4913R converted to 2 SDI output. 2-ch HDMI audio transmission is supported and embeds the audio into SDI output. The wireless frequency is 5.1GHz-5.9GHz auto ‚relecting, license free operation, and supports AES 128-bit encryption to protect the transmission. The transmitter is compact, portable designed, suitable for HDV camera installation, and receiver is equipped with V-mount battery plates, to be fixed on monitors and attached with batteries.