... 4Inch PTZ Sony Color 480TVL,B/W 540TVL, RS485,10X Optical Zoom,10X Digital Zoom 1) Pan 360° Tilt 180° or 90 ... B/W 570TVL,10X Optical,10x Digital ZoomColor 650TVL,B/W 700TVL,10X Optical ZoomColor 540TVL,B/W 600TVL,10X Optical,10X Digital ZoomColor 480TVL ... ,B/W 540TVL,10X Optical,10X Digital Zoom Hanging ...