Description
EVC301RLK红火电话外，手机锁
Sigtel型A Fire电话Outstation提供双工演讲，并用作EVC消防电话系统的一部分。消防电话系统在永久人道控制室和站点上的关键点之间的火灾紧急情况下提供了可靠的双向通信。
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