Lipo sw-60 Wireless conference System can support 50 units to be used together,meet different kinds of meeting rooms. The SW-60/60A/60B/10Wireless discussion system is a discussion system for using in meeting and conference venues with a limited number of participants. The SW-60/60A/60B/10 Discussion System consists of: One Control and power supply Unit (SW-60) Maximum 50 units ,includes one or more chairman unit(s). Wireless access point SW-10 Extension cables if required (5m or 10m). Peripheral audio and /or telecommunication equipment.The system has the functions below: (1)open mode:to select the maximum number of delegate microphones to be actived simultaneously(1,2,3 or 4).The microphone must be switched on or off manually by pushing the button on the delegate unit. (2)override mode:only one deleagte microphone can be activated.If a new delegate pressed his microphone button,the microphone unit of the current speaker will be switched off. (3)chairman only mode:only the chairman units can be activated. (4)test mode:for proper installation check.All the light rings and LEDs of the connected units will lit,if properly connected. (5)turn off mode:to turn off all units at the same time. Technical data SW-60 Mains voltage: 100240V AC 50/60HZ Current consumption 25W(VA) at maximum load Power to SW-60A/60B: 7.2V 1800mAh Lithium ion rechargeable battery: recharge need 3 hours, can last at least 10 hours Main input voltage for rechargeable battery: 100240V AC 50/60Hz Max 150mA Main output voltage for rechargeable battery: 8.4V DC 600 mA SW-60A/60B Wireless transmitting frequency: 790Mhz820Mhz; 860Mhz±10Mhz Wireless transmitting consumption: 90dBm SW-10 Receive frequency: 790Mhz820Mhz; 860Mhz±10Mhz Receive sensitivity: 90dBm System requirements: The maximum number of units in SW-60 system is 50. The minimum distance between each unit: >60 cm The maximum distance between SW-60A/60B to SW-10: <30m(reference to the Electromagnetic environment) Circuit,telephone connectors and input/output(unbalance) Input sensitivity -20Dbv/+11dBV rate/max. Input impedance 33k ohm Output level -14 dBV/+11 Dbv rate/max. Output impedance 500 ohm Sound recording input/output (unbalance) Input sensitivity -20Dbv/+5dBV rate/max Input sensitivity adjust +0/-20db Input impedance 47k ohm (L/R channel) Output level -20 dBV/+5 Dbv rate/max. Output impedance 500 ohm Frequency response 320Hz10khz(-10db, reference 1 khz)