CS-9508C/D with poll/voted/sign/ video tracking discussion conference system functional conference microphone unit, it adopted black matte treatment, analysis mode design, high-end design ,elegant appearance, pleasant, durable, it's uneasy to bruise and scratch. the microphone sound head adopted the latest acoustic research, with aluminum alloy long tube type interference principle; It making the voice clearer and thicker, wide frequency response, high sensitivity and uneasy to conduct squeak such characteristic. LP-7908C chairman unit sets up a break key ,it can close representatives microphone at any situation, it convenient for managing conference order, suitable for high level meeting places.