ArmorView&reg; 50x CAT5 To Coax Coaxial Camera CCTV BNC TV Video Balun Cable Connector Adapter This item is a adapter that use the coaxial cable convert to Camera CCTV BNC twisted-pair. With no Balun. The coaxial cable have a better capacity of resisting disturbancegood transmission qualityenergy savinghigh reliabilityeasy to assemble and low costs. At distances up to 50mits capacity of resisting disturbance is equal to the the device with Balun.And it is more costs saving.