Method for transferring configuration data to movement alarm unit for controlling light in building space, involves transferring visible light configuration data to picture screen of portable computer by light sensor in movement alarm unit

The method involves arranging a light sensor in a movement alarm unit (3). Visible light configuration data is transferred to a picture screen of a portable computer (4) e.g. smartphone, PDA or tablet computer, by the light sensor in the movement alarm unit. The configuration data as sequence from varying screen contents is transferred to the light sensor in the movement alarm unit. The configuration data is represented as video data on the picture screen of the portable computer and created by a web application.