AC-4020C/D Infrared Conference System Microphone Unit

Newly digital design
Portable table moving and microphone pipe can be pull out. Extended pipe optional.
Electric capacity type microphone, equipped with windshield cover
LCD display microphone ID, signal level, battery level, microphone state, control channel, etc.
Equipped with microphone on/off key and indicator.
Equipped with 5 function keys to support microphone id/LCD contrast/Language setting and service calling function.
Microphone will shut off the power in 60 seconds to save battery power if system communication is error.
LCD will display “IR Signal Weak/Error” if the IR signal is weak when microphone working.
Parameter of infrared conference system microphone unit

Items	Parameter
Transmission method	Wireless infrared
Channels	4 audio+ 1 data
Carrier frequency band	4MHz-8MHz
Modulation method	FM/FSK
Infrared radiator consumption	+10dBM
Receiving sensitivity	-100dBM
Mic sensitivity	-44dB±2dB
Frequency response	100Hz-12KHz
S/N Ratio	＞82dB
T.H.D.	＜0.5%
Reference speaking distance	10~30cm
Consumption Rating	8W
Operating temperature range	0-40 degree
Dimensions	168×145×60mm
Length of gooseneck	400mm (optional)
N.W	1.2kg (with battery)
Battery	LIP battery12V/4000MAH

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