High-efficiency conversion cells.? Antireflective front surface coating gives it a dark uniform appearance? By-pass diodes avoid shading problems? High-transmissivity, low-iron tempered glass? Anodized aluminum alloy frame and tempered glass for rugged protection in hostile environments ? Manufactured in a state-of-the-art, fully automated production facility? Certified according to international standards (UL 1703, IEC 61215 and TUV Safety Class II)