With its globally patented TWO-WIRE technology, 2Y-LINK is a completely new linking mechanism for CCTV surveillance systems, allowing cameras to be connected to DVRs or monitors. With just a pair of cheap, non-polarity "bell wire/speaker cable/UTP (unshield twisted pair cable)" and a VERY GOOD immunity to electromagnetic interference up to 1000m, 2Y-LINK can transmit "Video and Power" concurrently! With our 2Y-LINK system, you may save 40% to 60% on installation costs by doing away with the need for separate power supplies for each camera and cutting down on cable costs.Primary Benefits include:1. Lower cable costs by switching to Cat5e from coaxial.2. Financial savings from not needing a separate power source for the cameras (no power point required)3. Labor cost savings because it's straightforward and simple to install. One lightweight Cat5e replaces five bulky Coaxial; Cat5e can readily bend corners.4. Transmit high-quality video up to 1000 meters instead of just 200 meters using coaxial cable.5. Functions well in confined spaces (such as narrow building risers and lift shafts).6. Facilitates troubleshooting and maintenance.7. Inbuilt surge protection is included