* Unique patented technology, specially designed anti-RF radio frequency interference tube, which can completely eliminate the noise, Showing a perfect high-level conference environment.

* Unique patented appearance, delicate and modern.

* Special microphone head design, even without cotton cover, it can also eliminate the low frequency impact sound.

* Professional cardioid capacitor microphone core; with high sensitivity and clear voice; with red and green annular indicator light.

* When the red ring light is on, it means somebody is speaking; when green is on, it means apply for awaiting speech.

* It has function of suppress squeal, when microphone is open, the built-in speaker will be closed automatically.

* Built-in speaker, headset jack, which can adjust the headset volume.

* Use the professional 8 core aviation plug by cascading units, and with the metal fixed nut to avoid loosing and falling.

* It has 1.8 meter 8 core connection line that is used full line of aluminum foil and waterline shield, which greatly reduce the interference of strong electromagnetic waves on the wire, to avoid noise.

* The address code of each unit can be adjusted at any time to facilitate the construction.

* It is passive equipment, which is powered by the system controller, input voltage is 24V, within safe scope.

* Chairman unit is not limited by the quantity of speakers.

* Chairman unit has priority function of taking full control of the order of the meeting, can approve or reject the application for a delegate unit.

* The Chairman unit connection position is not limited; can be connected in any position of circuit.

* “Hand-in-hand” Cable cascade mode, which is easy to install and maintain.

* There are 5 multi-functional buttons for voting, election and meeting evaluation.

* The button indicator has a prompt for real-time voting.

* Speaking unit can apply or cancel to speak.

* LCD display can show the operation of the vote, voting mode, to avoid mistakes.