Central Control System,education equipment, office supply Technique Specifications: 16&18E VGA PartInput Port VGA*3(Audio switch synchroniously) Output Port VGA*2(with long-cable driving and preview function) Support resolutions VGA/XGA/SXGA/QXGA Belt width 440MHz B/C Interference -50dB@5MHz Differential Phase I/OS <1.28 degree,3.58MHz Differential Gain Mismatches 0.1%,3.58-4.43MHz Audio PartsInput Port Audio * 5 (B type *3) Output port Audio *1 Visual PartsInput Port Video*2 Output Port Video*2 I/O Resistance/Impedanee 75Ω Belt Width 100MHz Other Output PortsProjector/rear projection TV Power Output *1 Screen Power Output *1 Programing RS-232 Port *1 PC RS-232 Port *1 Programing Infrared Window *2 (B type no such function) MeasurementOuter Size 200*84*90mm Hole Size 184*70mm Weight1KGEnvironmentPower Supply AC220+-10% 50/60Hz 5A Power Consuming 6W(not including projector & screen power)