Hikvision's two-wire video intercom system includes indoor and outdoor video intercom stations powered by a distribution box that requires only two wires - one for power and one for audio/video transmission. This configuration makes upgrading an old intercom system easy. As fewer cables are required, you can simply reuse the existing cables from the previous hardware. Thanks to the advanced camera and Power Line Communication (PLC) technology, the product guarantees better video quality. The modular door station allows flexible combinations of function-specific modules. Put together the door station that best suits your needs by choosing between different module options such as card readers, name plates, keypads and more.