The chairman machine, which is designed with ergonomic design, has all the necessary functions to host the meeting, and has the ability to resist the interference of mobile signal. The DCNCONCM chairman looks similar to the dcn-conff representative but has an extra chairman priority button. By pressing the chairman's priority button, all the microphones currently on were temporarily or permanently switched off, enabling the chairman to control the meeting. The chairman can start, stop or suspend voting, cancel requests for statements, turn off all open microphone speakers, and call back messages to be displayed. A graphic LCD display with backlighting that can display multiple characters, including complex European or icon-based characters (such as Chinese). The number of channels that can be selected is automatically set to the number of simultaneous language channels currently available. Flat panel speakers provide excellent sound feedback and minimize feedback to improve speech clarity, making them easy to fold when the chairman is not in use. Basic function control and indicator lights, chairman priority button can be temporary or permanent closure are representative of the machine open microphone, including the choice of prompt, as long as chairman priority button pressed, chairman of drum machine words will stay open. Channel selector with backlit, can show the selected channel number and through general choice (up/down) button to select the channel with chairman, on both sides of machine is equipped with earphone volume adjustment knob, graphic LCD display. Usually display includes: - button function description - multilingual indicates the speaker, the current number of speakers and their data, request information and confirm the rest/have used to speak - the outcome of the vote - - public and personal messages - other user information, with the function of LED lamp five button (cooperate with graphic LCD screen use). Buttons can provide display information, such as short messages, meeting information, and microphone user information. Depending on the software, the five buttons can be used for a vote, yellow to confirm registration: light is used to represent to attend, in favour of (+), against the (-), a waiver (X) (parliamentary vote) - the Numbers: 1 to 5 (multiple choice or comment on) - rank evaluation: -, 0, +, + + (orientation survey), use the card reader and/or PIN number to represent the identity and access control, folding, panel speaker in open automatically when the phone mute, microphone "on/off" or "requests to speak" button, which is located at the top of the panel speaker "microphone open lamp, microphone button at the top of the" three color light: - red "open microphone" indicator light - green "request to speak" confirm "VIP" indicator lights - yellow. When on behalf of the machine as a laptop computer peripherals, "VIP" indicator light will be under the control of the PC control software was lit interconnection, microphone socket, 2 meters (78.7 inches) cable, with moulded six pin round plug, used for external microphone or wearing a microphone jack, six pin round plug, is used to loop connection, eight needle socket, can connect LBB 3555/00 internal communications telephone contact, external appearances and safety equipment, Such as fingerprints, left and right sides of the fuselage has a 3.5 mm (0.14 inch) stereo headphone socket, used to connect to external microphone or wearing a microphone of 3.5 mm (0.14 inch) stereo socket certificate and approval certification European CE technical specifications for electrical indicators headphones 30 Hz and 20 kHz frequency response load impedance > 32 ohm output power 2 x 15 mW / 32 ohms wore a microphone frequency response 30 Hz - 20 kHz load impedance > 32 ohm output power 2 x 15 mW / 32 ohms rated mic input level 7 mVrms overload microphone input level > 124 mVrms interface recommend external microphone types (or wearing a microphone) component electret condenser microphone directivity omnidirectional working voltage 5 VDC 1200 ohms to 62 dB sensitivity (0 dB = 1 V/mbar, 1 kHz) 100 Hz frequency response to 14 kHz connector is 3.5 mm (0.14 inch) mono or vertical body jack mechanical indexes to install desktop (portable or fixed installation) and embedded installation size (high) x width x thick (not including receiver) desktop installation 50 x 275 x 155 mm (2.0 x 10.8 x 6.1 inches) embedded installation 30 x 275 x 155 mm (1.2 x 10.8 x 6.1 inches) Weight 1.4 kg (3.1 pounds) at the top of the color of carbon black (PH 10736) with silvery white base color (RAL) 9022 panel of carbon black (PH 10736) order information DCN ‑ CONCM Concentus, chairman of the machine has the function of voting, channel selector, graphic display, card reader, pluggable, chairman of the receiver system of a new generation of DCN Concentus machine to separate phone book purchase. DCN- the MICS can plug and pull short microphones. The new generation of DCN system can plug and pull short microphones. The length is 310 mm (12.2 inches). The ordering number is dcn-mics DCN‑MICL, which can plug and pull long microphone. The new generation of DCN system can plug and pull long microphone, with a length of 480 mm (18.9 inches) and a silver-white color. Order number DCN - MICL