Detail：
  　　
Master: EM-3300 (discussed type)
◆ digital control, power supply and audio news conference unit is connected with the host computer using the same cable transmission ho (eight cores)
◆ external computer can operate independently or in combination with software and other external devices to synchronize linkage operation, enabling the computer management function (mode or operation: free speech, FIFO, etc., and can vote on election results meeting content and projected to the venue)
◆ Stand-alone functions can be realized following meetings: Open meeting, FIFO restrictions on speech
◆ system with high-quality sound effects channel
◆ combination of software and peripheral equipment can achieve the following functions:
Open mode (PREE), advanced mode (FIFO), Chairman of the dedicated mode (C.Only), restrictions on speech (LIMIT)
◆ central processor configured video tracking function can be realized shadow
◆ Selectable microphone while speaking of the count 1-9 (inclusive)
◆ panel has an LCD display, 122 × 32 dot matrix display conference mode, with the function keys on the front panel knob for adjusting or setting the system use
◆ has four terminals can be connected to the main cable unit 60 group meetings, and with the load and short circuit protection, increase the expansion device 250 can be achieved using both conference unit
◆ with three groups of audio signal output terminal for external recording or reproducing apparatus
◆ Frequency Response: 100Hz-18KHz
◆ Total Harmonic Distortion: 100Hz-18KHz conference system sound output less than 0.1%
◆ using AC220V power supply
◆ can be installed in a standard 19-inch rack
◆ meet international conference facilities and international installation standards UL or CE certification
◆ meet international conference equipment electrical certification standards (IEC 60914) and international safety standard UL or CE certification
President / Unit: ET-820D / ET-820C
◆ microphone to speak with key and light, you can control / indicating the machine status
◆ Single point resistance, anti-gas explosion sound features, with a wind shield
◆ Chairman of priority control buttons to activate the system beep to remind the attendance note can be set permanently terminate terminate or suspend the microphone to speak to speak on behalf of all state
◆ Number System Chairman Unit unlimited and can be placed anywhere in the loop
Restrictions ◆ System Chairman Unit unrestricted function
◆ can bypass capacitor microphone pole, and has spoken instructions aura
◆ High sensitivity microphone
◆ by the system unit power supply, input voltage range of 18V to be safe
◆ unit 8-core line "T" connector
◆ ET-XXXXSc / ET-XXXXSd with automatic video tracking
◆ unit with a microphone cable
◆ meet international conference equipment electrical certification standards (IEC 60914) and international safety standard UL or CE certification

◆ Frequency response: 50-16kHz
◆ Sensitivity: -42dB ± 2dB
◆ Reference speaking distance: 15cm-60cm
◆ microphone tube length: 390mm
◆ Dimensions: 217mmx120mmx64mm
◆ Weight: 1kg
◆ LCD, simple, complex, English three languages ​​optional