Features: 1.Plug and Play: The extender does not require software, no driver, plug and play, and can be used for a long time. 2.Good Heat Dissipation: The design of multiple cooling vents on both sides of the extender body can effectively dissipate heat and ensure the effective operation of the equipment. 3.Two Way Communication: Using sophisticated production technology, the extender has two way communication and is easy to use. 4.Small Size: Made of high quality materials, the extender has stable performance, small size and easy to carry. 5.Transmission Distance: The transmission distance of BNC is up to 500 meters, and the transmission distance of RJ45 is 100 meters. specification:Item Type: IP Extender Material: Iron Shell Network Interface: RJ45 Interface Coaxial Interface: Coaxial Cable Interface Working Temperature: -10c to +55c Power Interface: Approx. 5.5 x 2.5mm / 0.2 x 0.1in (Not Equipped with Power Supply, Need to Be Equipped Separately) RJ45 Transmission Distance: Approx. 100meters / 109.4yd Coaxial Transmission Distance: Approx. 500meters / 546.8yd (Maximum) PackageList:2 x IP Extenders 1 xUser Manual