楼宇对讲系统工作原理
Working principle of building intercom system
来访者可通过楼下单元门前的主机方便地呼叫住户并与其对话，住户在户内控制单元门的启闭，小区的主机这可以随时接收住户报警信号传给值班主机通知小区保卫人员，系统不仅增强了高层住宅安全保卫工作，而且大大方便了住户，减少许多不必要的上下楼麻烦。
Visitors can easily call and talk to the households through the host in front of the downstairs unit. The household opens and closes the control unit door. The host of the residential area can receive the alarm signal from the household to the host on duty at any time to notify the security personnel of the residential area. The system not only enhances the security work of the high-rise residential area, but also greatly facilitates the households and reduces many unnecessary upstairs and downstairs trouble. 。