BXB EDC-2011 Chairman Unit Conference System Specs: Button with LCD light-transparent design to make users see the recent speaking status. The base is made of extruded aluminum with antiskid pads below. Equipped with built-in 2.5” HI-FI speaker. When the microphone is operated, the speaker would be auto-off to avoid sound feedback. There’s no limitation of the chairman unit’s quantity; the position and sequence of the chairman unit can also be random. the function of the Chairman’s priority speech and the chime. # Check Conference System # Check Paperless Conference System