Features: Use coaxial lines to transmiss the real time digital signals, transmission distance max up to 220m. Fast and easy to install, save the cables, the installation cost and time. Convenient to use. Passive device, no power required. Built in surge protection, safety in use. The traditional coaxial line analog camera system is upgraded to the network HD camera, both of which can be replaced directly. Specifications: Video: PAL, NTSC, SECAM Standard: IEEE802.3 10base-T Speed: 10/100Mbps Longest Distance: 220M Cable: Coax Cable (RG59) Working Temperature: -20 ℃ to +70 ℃ Storage Temperature: -40 ℃ to +150 ℃ Humidity: (non-condensing) 0-95 Percent Size: 2.0*7.5*1.8cm/0.8*3.0*0.7in (Cable Excluded) Pacakge Weight: 49g/1.7oz Package List: 1 * Pair Passive IP Network Coaxial Transmitter