All-in-one design integrating speech, attendance registration, and microphone analog backup functions.
Dual microphone output backup combining one daisy-chain digital channel and one independent 48V phantom-powered analog channel for maximum system reliability.
Supplied with a 2-meter dedicated 8-core DIN high-density cable with a secure aviation plug.
Integrated square-column stem with a cardioid electret condenser capsule and a dual-color (red/green) status indicator ring.
Includes a 3.5mm stereo headphone jack for real-time speech monitoring from other units.
Independent volume controls for both microphone sound pickup and headphone monitoring.
Microphone on/off button (with priority key on chairman unit) used for speaking, attendance, and unit ID numbering.
Each unit is assigned a unique ID address for accurate system identification and management.
Compatible with automatic camera tracking after system host or PC software configuration.
Automatic self-diagnostic capability upon connection to the central control host.
Passive unit directly powered by the system controller with a 24V DC input voltage.
Chairman unit supports configurable priority function and podium mode via host settings.
Chairman unit allows reviewing and approving speech requests from delegate units.
Chairman unit can activate freely without being limited by the active delegate count threshold.
Chairman unit has absolute control over conference order via its override priority key.
Chairman unit connection position within the system daisy-chain is unrestricted.
Supports flexible "daisy-chain", T-type, and star ("+") wiring connection topologies.
The D6277/D6278 Dual-Backup Desktop Speaking Units integrate discussion and attendance sign-in while featuring a high-reliability dual-channel redundancy design. Engineered for mission-critical applications, the chairman unit includes a dedicated priority button for effortless moderation. A sleek 2.1-inch circular LCD touchscreen provides real-time status updates alongside intuitive microphone controls, making these units the ideal choice for high-demand conference environments.
Model | D6277 D6278 | |
Structure Type | Desktop | |
Effective Frequency Range with Gain Limiting (±3dB) | Unit A Input to Unit B Monitoring | 80Hz-12kHz |
Host Line Input to Unit Monitoring | 80Hz-16kHz | |
Unit to Host Line Output | 80Hz-16kHz | |
Static Power Consumption | <1W | |
Maximum Power Consumption | <2W | |
Signal-to-Noise Ratio | >80dB (A-weighted) | |
Crosstalk Attenuation | >80dB | |
Harmonic Distortion | <0.3% | |
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 | -42±2dBV/Pa | |
Frequency Response | 50Hz-20KHz | |
Maximum Sound Pressure Level | 125dB | |
Product Dimensions | 153×130×119mm | |
Product Weight | 0.8kg | |

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