This the 2020 model of xmartO 5MP super HD security camera system. Powered with PoE technology, between each camera to the NVR only a CAT5 ethernet cable is needed. The 5MP super HD cameras bring home surveillance to a much higher level of video quality. With latest H.265+ compression, your hard drive saves as much record as with 1080p cameras. With 2-way audio, you can hear and talk while watching the videos.