1.Support 720P, 960P,1080P HD IP network cameras. 2.Transmission distance: up to 500meters through a cat5e/6 network cable. and up to 300meters through one twisted pair (2 wires). 3.Support plug and play, and no setting of network terminating equipment, including web camera, needs to be changed. 4. Compact design, Metal. Bilateral heat dissipation. LED lights for monitor easily. 5. Cost effective, It is simple to construct at a low cost, for full use can be made of the coaxial cable, power line or telephone line for ; moreover, network installation cost can be reduced since communication media, such as Ethernet, needn't be-laid. 1.Transmission rate: 0-100Mbps max. 2.Suitable Cable Type: Coaxial cable, twisted pair and telephone wires. 3.Power Supply: DC5V-12V. 4.Operating Temperature: Minus 20 degrees Celsius to 40 degrees Celsius . 5.Relative Humidity: 5%-95% Non-condensing. Colour:Black Material:Iron + Plastic Package Contents: 20x IP Ethernet over Twisted pair Extenders Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.