●Desktop design. ●Built-in speaker and headphone jack clear sound quality with volume control. ●Cardioid pickup pattern condenser microphone with dual-colored indicator ●The unit is simple to use,press the request button slightly to speak. ●Feedback control funtion.Built-in speaker will close to avoid feedback volume when the mircophone opening. ●Frequency response:20Hz-25KHz ●The rod can be bent for 330゜. ●Effective sound-receiving distance:0mm-650mm ●Long life switch without noise. ●Chairman unit with highest priority to control in order of conference. ●Power supply:the main frame at 24V safe voltage. ●2 meters 8 pins aviation cable. ●Chairman unit contect position is unlimited in series circuit. ●The unit has built-in headphone with volume control. ●"Hand in hand" contect in series circuit,simple installation and maintenance. |