With the a/b Audiobox, your announcement system can be quickly and easily coupled with nearly every kind of telephone system. Simply interconnect the audio box between an analogue extension of your telephone system and the amplifier input, e.g. of a PA system. If you call the a/b Audiobox, it automatically receives the call and establishes a connection with the announcement system.
The integrated switching relay can be used to select the respective speaker zone of the sound system. On request, you can also be acoustically notified prior to the announcement.
The a/b Audiobox is suited for amplifiers and PA systems with an NF input (300 mVeff / 600 Ohm).