Our modular cassette system makes it possible to use public lighting infrastructure as a hotel for sensors. We believe that the public lighting network is the starting point of the smart city, because street lights can already do considerably more than drive away darkness. They will soon serve as the central smart city hub. In a rapidly changing world, it is important to offer future-proof solutions. Our energy-efficient smart lighting fixtures are remotely controllable and equipped with a unique cassette system that makes it easy to replace hardware and add new sensors in the future. The technology is based on an open standard, making it easy to connect to various back-office systems.