厂家长期供应KATTLE二总线消防电话分机DH9272（总线消防火警电话分机）
　　1,主机呼叫分机时，分机振铃，摘机即可通话
　　2,分机举机即可呼叫主机，按下拍簧即可终止通话
　　3,与二总线火警电话主机配合使用
　　4,每只分机对应一个号码
　　5,固定、手提可选
　　2-Bus Fire Extension
　　1, It rings when called and communicates when picked up .
　　2, Calls the main phone when picked up and by pressing the button will stop calling.
　　3, Works with the 2-Bus Fire Control Telephone Panel.
　　4,Unique number for each extension connected to the main phone.