4-Channel 1080P HD-AHD DVR with Pre-Installed 1 TB HDD / 4 x 1080P (2.0MP) Cameras / Easy Smartphone & Web-browser Access (MAC & PC) / VGA & HDMI Output / Backup to External Storage via USB. This system utilizes HD-AHD's closed-circuit design with AHD cameras while connecting with your IP cameras (up to two). Watch happenings alive: receive real-time, highly reliable HD video without loss or delay, transmitted at ultra-long wireless range. HD-AHD provides a highly secure closed network as well as a painless and non-complex plug-and-play setup process. A new cornerstone in the consumer market for private security technologies and an unsurpassed value with XYZ's 1 Year US Warranty, each system is further enhanced by DIY installation. A monitor or television is recommended for the initial setup.