1) It’s in embedded design

2) To adopt cardioids condenser mic with indicator. When speaking, the light displays red; when not, the light shows green.

3) With earphone jack and the sound quality is high

4) Chairman unit has the highest priority

5) When delegate unit apply for speaking, chairman unit has right to permit or to reject

6) It’s powered up by the system host and the power is at DC 24V

7) Connection location of chairman unit is not limited

8) It’s with 5 buttons for function of voting, selection and grading

9) The system is designed to resist static electricity at 8000V