Dimmable Dali drivers from Optotronic Intelligent. The Optotronic Intelligent series from Osram is a product family of dimmable Dali LED drivers. Due to thermal management and smart control, they offer high efficiency, reliability, and system protection. These compact constant current LED drivers are designed for indoor applications such as corridors and restrooms. This is made possible by their corridor function, which operates on three levels. Optotronic Intelligent LED drivers can also be used with a Touch DIM application, controlled by a push button or a sensor.