The outdoor intercom unit uses a horizontal line structure of 4 mm as its design element. The design code is echoed in every functional unit (call buttons, nameplate, speech recess, letterbox handle, etc.). The modular character is based on a block measuring 76 × 76 mm. The round aperture for the adjustable camera with audio channel is deliberately reminiscent of the shape of an eye. The dimensions of the brushed stainless-steel front are determined by the functional units required and can be scaled in both height and width. A sophisticated screw less fixture has been used to preserve the consistent, sleek appearance.