●PA-780M multifunctional digital conference system main unit has discussion,video tracking,voting functions. 
	●The main unit can support 60pcs delegate units and chairman units, it could be extended to support 250 units by adding more extension main unit PA-EPS600. And it has overload and short circuit protection function. 
	●It attached an approx 13-meter long cable used to connect main unit and delegate units, and the cable length can be custom-made according to the actual situation. 
	●Three conference modes: FREE mode/FIFO(First In First Out) mode/LIMIT mode. 
	●Three display languages can be selected:English/Simplified Chinese/Traditional Chinese. 
	●With only chairman / chairman indicative music / auto-off units functions can be set. 
	●The system can work with computer software, then has more management functions. 
	●Built-in video tracking function module. 
	●Built-in voting function module. 
	●Built-in 1.5W monitor speaker with MONITOR volume control. 
	●Independent volume control for MIC input, AUX input, MASTER and UNIT volume 
	●LCD can display the operation menu and working mode 
	●With “MODE”, “NUMBER” and “SAVE” function buttons for easy setting 
	●With four group 8P-DIN sockets for units connection. 
	●With LINE OUT/REC OUT/BAL OUT three audio signal output connectors. 
	●With RS232 connector to connect to computer. 
	●With video signal input and output connectors. 
	●With control signal connector for connecting and controlling video cameras. 
	●Main unit can be installed in the 19 inch standard cabinet. 
	●Designed to accord with ISO and IEC914 standards.