BLS-450M/BLS-4502C/BLS-4502D

*It is a discussing and video-tracking wired conference system.
*The front panel adopts buttons to control speaking mode and the number of speakers, breaking the traditional dial control.
*LCD screen displays working status
*The number of speakers: 1, 2,3,4,5,6 and full opening
*7 meeting work modes: ①chairman mode ②first in first out mode ③last in first out mode ④LIMIT mode ⑤FREE mode ⑥responder mode ⑦Apply speaking mode (just for BLS-4505C/D unit)
*The host can connect 60 microphone units, it divide into 4 parallel outputs, each channel can connect 20 units. It also able to connect expansion unit number of extended machine up to 5000 units by power extended machine BLS-350HD(under 255 units) or data extended machine BLS-350HS(above 255 units).
*Equipped with audio parallel output and a 6.3 jack output, conference recording outputs and background music inputs interface.
*Built-in telephone coupler input and output ports, and can be used for remote telephone conference. According to the principle of communication, it divide two-way telephone voice signals into inputs and outputs. In order to control the
intercom setting of phone call and set aside between the hall.
*RS232 interface can be achieved using computer software to control entire
conference system function.
*Designed with frequency shift feedback function,there is a key in the back panel
to control turn on and turn of the function.