Central Unit With Recording 
Power & Connectivity
Input: 100–240V AC, 50/60Hz (included adapter)
Power Consumption: 72W
Max. Current: 3A DC (24V via adapter)
Carrier Frequencies:
Rx: Ch1 (7.35MHz), Ch2 (8.10MHz), Ch3 (8.55MHz), Ch4 (9.15MHz), Control (6.45MHz)
Tx: Audio (1.95MHz)
Inputs & Outputs
Inputs:
MIC: -60dB, 600Ω (6.3mm jack)
AUX: -20dB, 10kΩ (6.3mm jack)
Outputs:
LINE: -10dB, 10kΩ (6.3mm jack)
REC: -10dB (RCA)
Headphone: 3.5mm mono
System Capacity
Supports up to 64 Chairman/Delegate units
Infrared: 4 units (expandable to 16 with a distributor)
Recording: MP3 (32kHz, 128kbps) via USB/internal storage
Software Features
Control up to 4 ONVIF-compatible IP cameras
Adjustable speech time limits
Chairman/Delegate selection for speaking requests
Conference layout mapping in software
Settings & Controls
Active Mics: 1/2/3/4 selectable
Speech Priority: FIFO, LIFO, or mixed modes
FBS Switch: AUTO/OFF/EXT
Physical & Environmental
Operating Temp: 0°C to +40°C (32°F to 104°F)
Weight: 2.8 kg (6.2 lbs)
Included: AC adapter (1.8m DC + 2m detachable AC cord)