|   | SCS-IR4090C/D 
 Wireless infrared intelligent conference system Discussion Unit (Microphone Unit) | 
- The delegates can automatic ON when the main unit give them requests and automatic OFF when main unit OFF.
- Table, stylish and ergonomic design
- Wireless unit, easy setup and removal
- Hi-Fi loudspeaker
- Priority button
- Pluggable microphone
- System controls up to 1000 contribution units
- Vertical emission angle selectable via LCD menu
- Broadcast standard microphone and digital infrared audio processing and transmitting technologies ensure 20 Hz to 20 kHz perfect sound quality, extremely low distortion factor
- Digital infrared transmission technology guarantees privacy, no worries about eavesdropping and radio interference, no radiation, no radio frequency license needed
- Adopts 2~8 MHz transmission frequency, excellent immunity to RF interference from HF-driven lighting and mobile phones
- Microphone sensitivity and EQ can be adjusted individually
- Built-in rechargeable Lithium battery pack
| Model | SCS-IR4090C/D | 
| Headphone connection | |
| Frequency response | 20 Hz to 20 kHz (-3dB) | 
| Headphone load impedance | ≥16 Ohm × 2 | 
| Headphone output | 10 mW | 
| Microphone | |
| Transducer | Electret-condenser | 
| Polar pattern | Unit-directional | 
| Sensitivity | -46 dBV/Pa | 
| Frequency response | 50 Hz to 20 kHz | 
| Frequency response | 60~12KHz | 
| Directionality | 0°/180° >20 dB (1 kHz) | 
| Equivalent noise | 20 dBA (SPL) | 
| Max.SPL | 125 dB (THD<3%) | 
| Interface data | |
| Connector | 2 x3.5 mm stereo jack for headphone | 
| Operation time of battery pack | |
| When mic. is continuously on | |
| Not omni directional | Approx. 14.4 hours<3%) | 
| Omni directional | Approx. 10 hours<3%) | 
| When mic. is off | Approx. 48 hours<3%) | 
| 15% mic. on + 85% mic. off | Approx. 36 hours<3%) | 
| Dimensions | 260×160×78.5mm | 

 
                                                             
                                                            



 
  
 



