Active circuitry with 8 buffered outputs 1 passive cascadeable video, audio outputs. cascade up to 10 units, the overall cable length using hign quality component video cable should not exceed 150 ft. A front panel ground loop switch circuit minimizes input signal from buffered output signals, this helps eliminate 60hz rolling bars when there is more than one ground connection path between two pieces of equipment. tabs on each side of the unit provide for easy mounting on walls, cabinets.Includes 18Vdc power supply. Front panel L.E.D power indicator.