The Dahua is designed to make installation as easy as possible. Systems start with a camera module (outdoor station) connected to the VTNS1060A switch (excluding VTO2111D-WP). This switch provides power to the camera module (outdoor station). Monitors are also connected to the VTNS1060A switch. The monitor DHI-VTH5221D can be powered using a PoE injector or 12VDC adapter. If required, additional monitors can be added to the system. CAT-5 cable can then be run to the VTNS1060A PoE switch to deliver power & data. Connecting the switch to a router allows connection to networked PCs or smartphones.