[Dream Liner] xmartO 8 Channel 960p HD Wireless security Camera System with 8x 960p HD 1.3Megapixel WiFi IP Cameras (Auto-Pair, NVR built-in Router, 80ft IR, No HDD) Dream Liner WiFi Relay Tech - The xmartO Dream Liner technology uses cameras in middle as repeaters. That way, further cameras connect to closer cameras 1st, and then to the NVR as a group. This theoretically doubles/ triples the current WiFi distance. NVR built-in Router  With built-in router, the NVR ensures reliable and stable WiFi connections with cameras. It does not use your home router bandwidth, reserves your home WiFi bandwidth for your TVs, tablets & phones. The system works even without any Internet connection. Mobile Live View & Playback  Free mobile app and cloud technology enable you to view the cameras on your phone/ pad in 3 simple steps. You can also remote playback history videos in the hard drive from your phone/pad. Easy setup, Plug & Play  NVR and cameras AUTO-PAIR, you only need to plug them to power and hook up to a monitor/TV, you see cameras video immediately. 960p(1280 x 960) HD Video - 1.3MP HD cameras have extra 0.3 megapixels even than 720p, giving you crystal and clear videos day and night. 3 infrared LED arrays allows you to see up to 80ft in complete darkness.