The Robot 400 slow scan TV (SSTV) converter provides ease of operation and stable performance. The SSTV image is displayed on a standard NTSC video monitor (not supplied). The Robot 400 uses 4k RAM for 128 x 128 pixel storage with 16 gray levels. 105-125 VAC. 12.5 x 6 x 11.75 inches, 12 lbs.