The telephone is used with the explosion-proof coupling of HOB-1 and connect to program controlled switch to form explosion-proof communication system.
话机与关联设备HOB-1型防爆耦合器配套， ● 户内、户外 与交换机连接，组成防爆电话通讯系统。
The telephone is used with the explosion-proof coupling of HOB-1 and connect to program controlled switch to form explosion-proof communication system.
话机与关联设备HOB-1型防爆耦合器配套， ● 户内、户外 与交换机连接，组成防爆电话通讯系统。
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