FEATURES Designed accordance to ISO and IEC914 stands; Main unit can support 60 units delegate and chairman microphone; Extend to support 250pcs units microphone with extension power unit. Equipped with 4 groups of 8P-DIN interface for system connecting. With the port for TEL interface input, TEL meeting is available with TEL coincidence; Built in monitor loudspeaker; System support discuss mode: Free mode, FIFO mode(1~9 microphone unit), limit mode(1~9microphone unit); System working mode can display on LCD; Support video camera autotrack with video processor T-8008; Support voting with voting processor T-8000; Connection: 1pc of 13m main cable with 8PIN plugs;                     8PIN socket for system   connection.   SPECIFICATIONS   MAIN UNIT Power Supply: AC110V-240V/50Hz-60Hz Consumption Rating: 455w T.H.D : less than 0.05% S/N : more than 75dB Frequency Response: 100Hz- 18KHz Audio Input: RCA*1, 6.35mm*1 Audio Output: RCA*2, XLR*1 Output Impedance: 47KOhm Data Communication: RJ45*1 System Connection: 8-PIN DIN*4 Installation: 19 inch frame   CHAIRMAN UNIT AND DELEGATE UNIT Frequency Response: 40Hz-16KHz Sensitivity: 44dB Length of gooseneck: 390mm Support discuss & video; Built in inner speaker&LCD; IC card/key press sign in option Chairman with priority button