... AV transmitter and receiver 2. 12CH 700mW wireless system 3. Frequency:2.2G/2.3G/2.4G.(2.4G standard) 12CH 700mW Wireless AV Transmitter ... and receiver, wireless system*Transmit Power:700mW.*Frequency:2.2G/2.3G/2 ... Range:500~1200 meters.*Package:12CH receiver,transmiter,2 antennae,AV cable,TX cable. 12CH 100mW Wireless AV Transmitter ELP-WTR607