The Kopp-Dimmer is recommended as tested dimmer by Philips for Lirio LED hanging lamp. Since we have the switch / socket system installed Paris, this recommendation came to meet us very. The dimmer does its job without buzz, but you turn until it stops on, the lamp begins to rhythmically flickering. However, they already reached their highest point just before the brightness level, so you have to "pivot" to get out quickly. Nevertheless, a star deduction, precisely because of the dimmer has been recommended for Lirio and obviously no fine tuning by potentiometer screw longer permits.