For 3d models we consider both the three-dimensional models made in .dwg format, and models in .max or .3ds format made with 3ds Max and also BIM models in .rfa and .ifc format, useful for those who design with BIM software like Revit o Archicad and present for all the variations of the single product. 
As for external lighting, various models of outdoor lamps are available: bollards, spotlights or recessed lamps on walls or flooring. The outdoor lamp models provided are suitable for lighting either public or private outdoor spaces. 
In addition to the 3d models for interior and exterior lighting, the catalogues and technical data sheets of the individual products are also available.
Downloading the BIM models and importing files into a project is particularly simple: just load the Revit family, select the file that you previously downloaded and, depending on the type of lamp you chose, the BIM model automatically positions itself on the wall, the ground or the ceiling. 
As for indoor lighting, the choice of a lamp model compared to another is clearly dictated by functional and design requirements. Clearly a suspension lamp model is probably more suited to living areas and in combination with certain furnishings. 
The choice of a lamp model is also dictated by the contribution of natural light present in the environment and the size of the windows or French windows.