On the VELUX website, find information about external roller shutters for roof windows. List at least three key benefits, identify all explicitly stated operation types for the roller shutters, and state the material used for their slats.
Navigate to the VELUX external heat protection page for roof windows (https://www.velux.de/produkte/sonnenschutz-und-rolllaeden/hitzeschutz-aussen). Accept the cookie preferences to access the page content. Scroll down to locate the section titled 'Rollläden'. Identify and list at least three main advantages or benefits of the external roller shutters. Identify and list all operation types explicitly stated for the 'Rollläden'. Identify the primary material used for the roller shutter slats. State the gathered information.
State at least three key advantages of the external roller shutters, such as heat protection ('Hitzeschutz'), darkening ('Verdunkelung'), thermal insulation ('Wärmedämmung'), increased security ('Erhöhte Sicherheit'), or noise reduction ('Lärmreduzierung'). List the operation types explicitly stated for the roller shutters: 'Solarbetrieben' and 'Elektrobetrieben'. State that the slats are made of 'robustem Aluminium' (robust aluminum).