ARA rents out building technology such as lighting, sensors and network technology to building owners and real estate developers. The ARA portfolio consists of products from various manufacturers. Together, these products form a modular, repairable and upgradeable system. By using the modular ARA system, the customer reduces his costs for the maintenance of the building technology. With the ARA rental model, the customer receives a new installation without high investment costs. Both the modular ARA product system and the ARA rental model comply with the principles of the circular economy and conserve nature's resources.