The Wireless Simultaneous Interpretation System Product Description Model NO.: RC2406 Video: Without Video Communication: Wireless Transport Package: Carton Type: Simultaneous Interpretation System Composition: Translation Color: Grey Origin: Guangdong China The Wireless Simultaneous Interpretation System Features : 1. The wireless simultaneous interpretation system radiates and distributes up to 80 channels of audio signal. 2. It offers instruction by carrier signals from transmitter unit. 3. It has auto gain control to ensure diodes with max efficiency. 4. It is convection cooled for noiseless, reliable operation. 5. It can be cover over thousands of receivers / listeners. 6. It can be up to 150 square meter. 7. The working temperature is -20℃~40℃