GENERAL CHARACTERISTICS ITEM DESCRIPTION | OPERATING REQUIREMENTS 47-63 HZ,108-123 VAC,1 AMP,RACK MOUNTED; TECHNICAL CHARACTERISTIC 16 FOUR WIRE CHANNELS,LOCAL OR REMOTE CONTROL,124 OHMS IMPEDENCE ON DIGITAL LINES,600 OHMS IMPEDENCE ON AUDIO LINES; DIMENSIONS 19.000 IN WIDE BY 23.500 IN DEEP BY 13.960 IN HIGH |