product features 8 channels input  and 16 channels output AD5204AR is compatible with RJ45 and UTP + / - binding post Effective transmission distance 328 or 656 yards(300 or 600 meters) Black and white signal can be transmitted a longer distance Pretty good color image Real-time NTSC, PAL and AV signal transmission Strong interference suppression High quality rust-resisting metal shell Double BNC outputs Without power supply