13，專供壁掛式消防電話主機(jī)KT9261/B（壁掛式消防通訊主機(jī)）
1,20門總線電話，布線只需二根且不分極性

2,主分互叫；分機(jī)摘機(jī)即通話，主機(jī)顯號(hào)
3,可三方通話
4,通話時(shí)自動(dòng)啟動(dòng)數(shù)字錄音

2-Bus Control Telephone Panel(Wall-mounted structure)
1, Only a twisted-pair wire without polarity is needed.
2, A total of 20 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,The systems can start digital recording when communicating.