Aurora Rotary Dimmer is suitable for control of dimmable electronic transformers, toroidal transformers and tungsten lamps without de-rating and not suitable for use with fluorescent lamps. Module case ultrasonically sealed to reduce dimmer buzzing with smooth dimming operation from 0-100% light output and derate dimmer by 70% for LED loads. Complies with the latest electrical safety standard for Dimmer EN 60669-2-1:2000 and EMC compliance – EN 55015.