Commax CAV70GA7 inch Gate View Video Monitor UTP(Cat. 5e) Guard station phone.Monitoring & calling visitors and releasing door lock (public entrance, individual entrance Releasing door lock(public entrance, individual entrance.Paging and calling a security guard station, OSD function, Hands-free.Power source: AC 100-240V, 50/60Hz, Power consumption: Standby: 4W, Maximum: 15W.LCD size: 7 inch wide color LCD, Mount type: Surface-mounted type, Operating temp.: 0?~40?.Wiring Common: UTP(Cat. 5e) Door camera: 4 wire, Distance Lobby phone: 300m Guard station phone: 1Km.Dimension(mm): 243(W)×168(H)×35(D).