... 1 contrast ratio,visual angel 178D 6.7mm Ultra-narrow bezel multiscreen display wall Model NO.204020462046-SNB2046-SDI-SNB2046L-SNB2046LE- ... .5mm6.5mmInput interfaceYpr/Pb,Av x2,VGA,HDMI,S-video,TVSignal formatNTSC,PAL,480P,576P,720P,1080I,1080PControl interfaceIR ... intelligent speed dome cameras, LCD splicing and LCD Video wall,LCD display wall,and LCD monitors with several years of experience, ...