Operating Voltage
DC24V (supplied by main unit)
Professional audio, microphones and system integration

Harmonai GS-880C/GS-880D is a voting-enabled wired cascading chair/delegate unit designed for modern conference systems. It features a cardioid electret condenser microphone for precise sound pickup and strong interference rejection. Powered centrally by the main unit (DC24V), it enables clean cabling and efficient installation. Supports formal voting functions for government meetings, corporate boardrooms, academic auditoriums, and more. The daisy-chain cascading architecture allows flexible system expansion and ensures stable, reliable operation.
DC24V (supplied by main unit)
8P-DIN cable, Category 6A (Cat6A) Ethernet cable
Cardioid electret condenser
-46dBV/Pa
20Hz–20kHz
2kΩ
>20dB (at 1kHz)
20dBA (SPL)
125dB (THD<3%)
>80dB
>80dB
<0.05%
Widely deployed in government agency meetings, corporate boardrooms, academic lecture halls, and international convention centers—where formal voting and high-fidelity voice capture are essential. The daisy-chain cascading connection enables rapid deployment; the chair unit provides priority control to ensure orderly meeting flow.
For more information about Harmonai conference system solutions—or to request a customized configuration—please contact our professional team anytime.