All Internorm window systems with integrated blinds can be equipped with I-tec shading. This sun protection without external power source works with photovoltaic module and batteries. I-tec shading systems ensure an ideal room climate, this is due to the photovoltaic module and battery, completely without additional power supply! The blinds open and close automatically at sunrise or sunset through the automatic mode. Additionally, I-tec shading measures the temperature automatically. This means that during the winter months, the warmth of the sunlight can be optimised as the blinds remain open. This in turn reduces heating costs and ensures perfect sun protection without any effort.