CR-M5102/4A, the fifth generation of discussion and voting unit, on which the elegant and delicate slide-over design is applied, creatively uses the brand-new "T" style connector and "Parallel" connection mode instead of traditional "Hand-in-hand" connection mode to avoid influence from other units to greatly enhance the stability and reliability of system connection.

The unit supports double 8-letter LCD display of channel in listening and free manual selection of the channel-code of language in listening with 11 channels for options. It also supports 320*64 large screen display, microphone On/Off, voting, signing-in. Those features overstep far beyond the forth generation of discussion and voting unit.

The unit integrates functions of discussion, voting, botton of signing-in, simultaneous interpretation. The 8 pins high density aerostatic plug is used on it. Combining with rotative screw connector with cap, the connection between devices are potentially reinforced. Its own 2 meters of 8 pins cable dramatically lowers the interference from electromagnetic wave to improve the stability of system. Meanwhile, the professional conference microphone is used on it. Combining with rotative screw connector with cap, the microphone is much more freely inserted and extracted and easily installed and disassembled.

CR-M5102/4A is a non-power device whose power supply is provided by main controller. The input voltage is 24V. The unit uses cordiform directional capative sound collector with twin-color LED indicator(Red for "Speaking" and Green for "Requesting to speak"). The chairman unit is free of limitation of speaking numbers and owns the priviledge to approve the speaking requests from delagetes. It is equipped with inner magnetic speaker, earphone jack and volume adjustment botton. When the microphone is on, the built-in speaker will shut down automatically to prevent the voice returning input. This special function could effectively resist the fizzle to realize extremely clear sound effect.