... conductivity aluminum light board + silicone thermal conductivity + laser semiconductor cooler + external heat sink, the heat full ... national patent;fast & smooth precision motor drive, sensitive control, integrated design, compact structure, high reliability;128 preset ... digital auto-focusFunctions:Brightness, gain, sharpness leveladjustableControl Interface:WireVideo output:1.0Vp-p,75Ω(BNC)Power ...