... secure and reliable. 4:Low power consunmption,good color saturation. 5:Energy saving up to 80%. 6:Color effects:Shifting in ... Frequency (Hz)≥400Picture display methodDots to dots display synchronized with CRTSignal interface DVIScreen Lifetime(hours)100,000 Maintance wayBack-maintained ... outdoor squares, bridges, Tunnels, Landscapesany other places of entertainment, etc red dot light