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Dual Com | 双通讯

When an intruder alarm has two methods where it can signal out such as GPRS and LAN, it is often referred to as 'Dual com', or having dual communications. Generally the intruder alarm would be signalling to a central station or an ARC.

当入侵报警有两种方法发出信号时，例如GPRS和LAN，这则被称作‘双重通讯’。一般入侵报警发送信号给中心站或者接警中心。


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