You choose an outlet in the wall that you don't use regularly, not a power strip or anything like that. The Symbio Harmonizer Comfort should not be removed, except when moving house.
Simply install in the fuse box after the input fuses. Please do not remove it - except when you move house.
Do not open the product. Avoid contact with liquids. Repairs may only be carried out by the manufacturer. Use the product only for its intended purpose. Before operation, ensure the product is in proper condition. Dispose of the product and packaging according to applicable regulations.