7inch color Hikvision LCD Resolution 1024 × 600, ROM 32 MB, RAM 128 MB, Audio compression standard G.711 U, G.711 A,Event capacity 200 alarm records,2 MB RAM reserved for events, Linked doorphone capacity 17 IP doorphones Max.Network interface 1 RJ-45 10/100 Mbps self-adaptive,Working temperature -10 °C to 50 ° C,Dimensions 200 mm × 140 mm × 23.6 mm,Power supply IEEE802.3af, standard PoE 12 VDC, Application environment Indoor, Weight: 0.325 KG.