Electric and solar powered products. VELUX INTEGRA ® electric roof windows give you remote control of your windows with just a tap on the control pad. The rain sensor closes your windows if it starts to rain and you can add VELUX ACTIVE to get a healthier indoor climate, automatically. INTEGRA products.
Carbon dioxide is the main greenhouse gas naturally occurring in the atmosphere. This greenhouse effect is perfectly normal and ensures that the temperature on Earth is sufficient to sustain life. However, if emissions of CO 2 and other greenhouse gases become too high, that heat becomes trapped and the temperature rises.