Talkback Mic, Bosch Plena All Call Station w. PTT

“This call station has a limiter, a speech filter, and configurable gain settings for better understanding even when the speaker moves in front of the microphone.
Using extension cables, the call station may be placed up to 500 m away from the amplifier and still produce a balanced line-level output. To this call station, the LBB 1925/10 may assign various priority levels as well as pre- and post-call chimes.”