3，長期供應二總線消防電話主機KT9261/DH9261（總線消防火警電話主機）

消防電話系統是專門用于消防控制中心（室）與建筑物各關鍵部位之間通話的電話系統。由消防電話總機、消防電話分機和傳輸介質構成。
1,20/100門總線電話，布線只需二根且不分極性
2,主分互叫；分機摘機即通話，主機顯號
3,可三方通話，尺寸2U
4,通話時自動啟動20分鐘以上的數字錄音
5,呼叫、應答時間記錄，液晶屏顯示100條信息

2-Bus Fire Control Telephone Host
1, Only a twisted-pair wire without polarity is needed.
2,A total of 20/ 100 extensions can be provided for the main phone.
3, Each extension can call the main phone without dialing. And the main
phone can call any of the fitted extension too. What’s more, the extension number displays when it is calling.
4,Permits the second extension to call when the main phone is communicating with a different extension.
5,The systems can start more than 20 minutes of digital recording when communicating.
6,Call and response time was recorded；LCD screen can display 100 pieces of information