The voting controller or extended control device is the core part of the speech and voting system. It is controlled and managed by an advanced microcomputer to complete the conference speech and the adjustment of the corresponding parameters, and provide safe DC power supply, conference and voting management, signal amplification and signal output for the equipment. The host adopts high-quality circuit boards and components and increases the area of ​​the ground conductor, and the anti-static capacity can reach 12000V.

The host can control up to 1920 speech devices. 3 groups of 6 output ports can connect up to 192 representative units. Depending on the connected representative units, functions such as speech, sign-in, voting, and display can be realized. Each channel only needs one dedicated cable to connect to the host, and the units are connected hand in hand. The design solves the cumbersome wiring problem of the staff. Plug and play, support hot insertion with power on, and representative units can be added or removed during the meeting without affecting the meeting. Each group of connection ends has a protection circuit to prevent overload and short circuit. The built-in sound feedback suppressor can minimize the sound feedback phenomenon in the venue and significantly improve the sound amplification effect. Built-in multiple speech management modes and speech mode combinations increase the management flexibility of the microphone.

During the meeting, the host can still operate without a computer and software to ensure the most basic speaking function. The conference affairs group only needs to set up the system through the computer before the meeting. After the computer is turned off, the previous settings will be automatically stored in the host until the settings are modified again. In addition, the host can achieve more powerful functions with the software and realize multiple meeting management modes. For example, the volume, text display, first-in first-out, speech restriction, automatic speaking mode, application mode, etc. of each unit can be adjusted independently. The meeting content and voting results can be displayed on the computer screen or projector.

The multi-purpose RS-232 port (DB9) provides a strong guarantee for intelligent control and management: the computer is used to control the conference management controller and modify the parameters; after connecting to the centralized control system, the speech is managed in an orderly manner through system program design. The camera under centralized control management can easily realize automatic video tracking.

The 160x32 dot matrix LCD displays the number of online groups and the total number of units connected to a host.

One host can control 1920 voting units.

The host can choose RS232 or LAN to connect to the computer.

TCP/IP protocol realizes high-speed data exchange.

Host cascading can automatically identify ID addresses.

Host connected to the network switch can set the IP address of the controller,

Support remote control. When the system is expanded, you only need to set different IP addresses. The system is easy to expand.

Support dual-machine hot standby function.

6-way output interface connects the representative unit, the unit is hand-in-hand series connection, and supports loop connection.

The equipment supports hot plugging; the system has monitoring function and displays the status of the voting system in real time.

The working status of the equipment can be queried, operated and set through the control computer.

The working status of the system equipment can be detected online.

Support the voting method of the first vote being valid or the last vote being valid; support the form of public or secret voting.

Support multiple voting functions.