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A representative machine with a channel selector enables participants to speak, register their requests and listen to others. It provides sockets for connecting pluggable microphones (DCN?MICS and DCN?MICL, which need to be ordered separately). The device has a built-in channel selector and is therefore suitable for meetings where discussions are conducted in multiple languages and simultaneous interpretation is provided. The channel selector consists of two channel selection keys and a display that displays the number and abbreviation of the language so that the user can quickly select the desired language channel. Basic function, reduce the headphone output level to prevent to produce acoustic feedback (when listen to basic language and when open the phone activation), pluggable microphone (DCN ? MICS or DCN ? MICL) jack ? built-in speakers will mute when the receiver opened, to prevent to produce acoustic feedback. , the device can be used as a representative machine already, also can be used as chairman of the machine (DCN ? DBCM main seat button requires a separate order), the available cable clip (DCN ? DISCLM, requires a separate order) to lock loop control cable and light alphanumeric display, so that through the number and channel name abbreviations to choose language, microphone button with red, green or yellow light-emitting LED lights. Red table microphone is active, "green says it has to accept a request, and yellow of the" VIP ", when the representative to join the notebook list, VIP indicator light will light up (only when using the PC software available), earphone with volume control buttons, hidden "De ? init" switch interconnection, used for pluggable microphone socket, two 3.5 mm (0.14 inch) stereo headphone jack socket type, 2 meters (78.7 inches) cable, end with a molded six stitches circular connector. Six stitches circular connector to loop connection, certificate and approval certification European CE technical specification electrical 30 Hz and 20 kHz frequency response headphones 32 ohm load impedance > < 1 k ohm output power 2 x 15 mW / 32 ohms mechanical indexes to install the desktop (portable or fixed installation) size (high) x width x thick (not including receiver) desktop installation 60 x 210 x 140 mm (2.36 x 8.27 x 5.51 inches) weight 1.15 kg (2.54 pounds) at the top of the black color (RAL) 9017 on the back of the silver-white color (RAL) 9006 order information channel selector (CN) of DCN - DCS - CN on behalf of the machine has a channel selector, pluggable microphone dark of a new generation of DCN system generation table machine. The Chinese version. Microphones are ordered separately. Dcn-dcs-cn with channel selector represents a new generation DCN system with channel selector and pluggable microphone. Microphones are ordered separately. 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?MICS?D. The new generation of DCN system can plug and pull short handle microphones with a length of 310 mm (12.2 inches) and a dark color. Dcn-mic-d DCN?MICL can plug and pull long microphone. The new generation of DCN system can plug and pull long handle microphone, the length is 480 mm (18.9 inches), silver white. Dcn-micl DCN?MICL?D dark pluggable long microphone new generation DCN system pluggable long handle microphone, length 480 mm (18.9 inches), dark color. Dcn-micl-d dcn-dbcm chairman button (10 sets) for the new generation DCN system chairman button (10 sets). Order no. Dcn-dbcm dcn-disclm cable clamps (25 per set) for the new generation DCN system cable clamps (25 per set). Order number DCN - DISCLM