D6224 Desktop Delegate Speech Unit provides functions such as speech, check-in, and self-checking. It adopts a goose-neck microphone, built-in magnetic loudspeaker, and headphone jack, and also provides power-on indicating light and button and light indicators. In VOICE mode, it can realize the voice controller on/off function. It has high-speed digital processors and HiFi audio circuits and can indicate the work status of the LCD screen. Conference units are passive equipment and are powered by controllers. The input voltage is 24V; they are easy to use, with clear voice, and easy to install with a fashionable appearance.