Modules are sourced from world leading PV module manufacturers principally Yingli and Topray who are both large scale vertically integrated manufacturers that process from polysilicon production to module assembly to ensure consistently high quality levels. Both module types are recognised as quality products and are internationally certified by TUV Rheinland to ISO, CE and IEC standards as follows. All Dayliff modules are manufactured to the highest standards and are guaranteed to provide reliable performance over long life spans. They are quality products in terms of both technology and performance and are ideal power sources for all types of solar applications.

THERMAL CHARACTERISTICS
Nominal Operating Cell Temperature: 46+/-2°C
Temperature Coefficient Pmax: - 0.45%/°C
Temperature Coefficient Voc: - 0.37%/°C
Temperature Coefficient Isc: 0.06%/°C