refer to the manufacturer's documentation:

Travel: compact design and global voltage compatibility (100–240 V)

where the knurled shaft can be used for direct hand operation

The product is manufactured from copper strip with a documented high purity (stated as higher than 99

Sugearm 50mm 1080m hvid, væg/loft 3-led Unit(s):Pcs refer to the manufacturer's documentation:Product Overview The Alsident System 50 extraction arm with 50 mm tube is a wall ceiling mounted extraction arm with a 3 joint construction and a working radius of 1080 mm (article number 50 5747 3 as the 1080 mm variant). The system is supplied with a recommended airflow of 4585 m h (normal 65 m h) and a tube diameter of 50 mm. The tubes are made of anodized aluminum, and the joints are made of polypropylene (PP); white color on the joints is