On the VELUX website, find information about external roller shutters for roof windows. List at least three key benefits, identify all available operation types, and state the material used for the 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 available operation types for these roller shutters (e.g., Solar, Elektrisch, Manuell). Identify the primary material used for the roller shutter slats.
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 all three available operation types as found on the page: 'Solarbetrieben', 'Elektrobetrieben', and 'Manuell'. State that the slats are made of 'robustem Aluminium' (robust aluminum).