23Indoor areas with a low relative air humidity (e.g., hallways, officesand other heated rooms).Indoor areas where humidity condenses on walls but never flowsdown the walls (porches, storage areas, industrial areas, e.g.).Outdoor areas where protection against rain and water flowingdown the wall is provided (sheds, passages. e.g.).Outdoor application means:Environments where the product is exposed to rain or where watermay flow down the walls (fence, outer wall of a building, e.g.).Caution The warranty shall not apply to product failures and defects caused byimproper installation (contrary to these instructions). The manufacturer isneither liable for damages caused by theft within an area that is accessibleafter the attached electric lock is switched. The product is not designed asa burglar protection device except when used in combination with astandard lock, which has the security function.Surface Mounting1. Drill holes using the enclosed template. Use the wall dowels attached.2. With multiple module sets, connect the frames as shown in the figure. Placethe basic unit on the left and extender units on the right. The interconnectingcable should be installed later!3. Put the blanking modules on the unused side holes as shown in the figure.4. If you are utilising a roof module, you should install it now.5. Screw 2N® Helios onto the wall. Carry the supply cables (line, lock, powersupply) through one of the holes into the basic unit frame.