Integrated speech and voting functions in a single conference unit.
Comes with a 2-meter dedicated 8-core DIN high-density cable with an aviation plug.
Equipped with a cardioid electret condenser microphone with a dual-color LED ring (red/green).
Standard gooseneck microphone included.
Microphone stem can be detached during recess for convenient maintenance and storage.
Built-in magnetic high-fidelity speaker; speaker automatically mutes when microphone is active to prevent feedback.
3.5mm stereo headphone jack for connecting headphones; headphone volume adjustable.
Excellent resistance to mobile phone interference.
Features a microphone on/off button, 5 voting keys, and a priority key on the chairman unit.
Supports button-based check-in function.
Each unit has a unique ID number.
High-brightness LCD screen displays real-time unit status during operation.
Compatible with cameras: after configuration via the digital conference system host or PC software, the unit can support automatic camera tracking.
Self-diagnostic functionality when connected to the control host.
Passive device powered by the system host; input voltage: 24V.
Microphone activation triggers a notification sound; sound can be enabled or disabled via settings.
Chairman unit supports priority function and podium mode through host configuration.
Chairman unit can approve delegate units’ requests to speak.
Chairman unit can freely activate regardless of the number of active delegates.
Chairman unit has full control over conference order with priority function.
Chairman unit connection position is unrestricted.
Supports “daisy-chain”, T-type, or star (“+”) connection modes.
Model | D6221 D6222 | |
Structure Type | Desktop | |
Effective Frequency Range with Gain Limiting (±3dB) | Unit A Input to Unit B Monitoring | 80Hz-7kHz |
Host Line Input to Unit Monitoring | 20Hz-8kHz | |
Unit to Host Line Output | 80Hz-9kHz | |
Speaker Power | 1.5W | |
Static Power Consumption | <1W | |
Maximum Power Consumption | 2W | |
Signal-to-Noise Ratio | >80dB | |
Crosstalk Attenuation | >80dB | |
Harmonic Distortion | <0.5% | |
Headphone Output | 9dBu, 8-32Ω, 3.5mm | |
Operating Power | Powered by host, DC24V | |
Unit Interface | 8-Core DIN dedicated connector | |
Microphone | Microphone Type | Cardioid electret condenser |
Input Sensitivity | -45±2dBV/Pa | |
Frequency Response | 50Hz-16kHz | |
Maximum SPL. | 115dB | |
Product Dimensions (W×D×H) | 218×120×50mm | |
Package Dimensions | 560×215×165mm | |
Net Weight | 1kg | |
Gross Weight | 2.5kg | |

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