parameters Model No. IR-3.91 IR-4.81 Pixel Pitch 3.91mm 4.81mm Resolution 65536 pixel/m² 43264 pixel/m² Grey Scale 14 bit 14 bit Brightness ≥2500cd/m² ≥2200cd/m² Scanning Mode 1/16 1/13 Refresh Rate ≥2000Hz ≥2000Hz Max Power 800w/m² 720w/m² Average Power 240w/m² 200w/m² Weight 28kg/m² 28kg/m² IP level IP20 IP20 cabinet Size 500*500*7mm 500*500*7mm Power Supply 90VAC~264VAC 50/60Hz 90VAC~264VAC 50/60Hz Visual Angle Horizontal ≥110° Vertical ≥110° Horizontal ≥110° Vertical ≥110° Application places Ideal for super market, Shopping mall, hospital, bank, enterprises, government offices, exhibition hall, hotel, sports stadium center, customs, staging area,car exhibition, airport, transportation, parks, TV. http://www.screenopto.com/