供应二总线消防电话分机KT9272A（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.