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The Bogen Communications TBA15 Talkback Amplifier is a 15 watt amplifier used to momentarily convert paging systems into hands-free telephone systems. The TBA15 uses the paging system's speakers as microphones and feeds the signal into a telephone line. Full-duplex telephone communication is achieved and normal paging / background music operation resumes when the call is disconnected.
Hands-free 2-way conversations through the paging system
600 ohm transformer-coupled telephone line input
25V or 70V balanced line outputs
Adjustable sensitivity control for switching from listen to talk