厂家直供手柄消防电话分机KT9271/DH9271（固定、手提通讯分机）
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,固定、手提可选

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.