1-Way and 2-way Video Audio Doorphone Intercom Systems available on mono-toneand color ,handset monitor and hands free monitor,multi-camera,intercom-monitorand consult with our technical engineer for best solution/systemaccording to your market. *simple,safe andsecure access comtrol system *Multi-entrance(connects to two doorstations or guardroom,specify version) *multi-handset(connects to extra handset for intercom,specify version) *Communication between interphone or monitors *Dry contact or 12V350mA power for gate opener,light,alarms...etc *Camera doorstation available flush mounting or suface mounting back case for choose *High graded aluminum panel in weather proof ABS plastic case(double insulation) *Power supply is using energy saving system of switching mode power supply *Camera type CCD or CMOS *Monitor type 3.5"or4"crt or TFT LCD 1路和2路视频音频对讲系统可选单颜色,手提免提,多摄像头,多路对讲系统. *简单,安全易用访问控制系统 *多入口(连接两个或警卫室,*版) *多手机(连接到额外的手机通话,