Have this R7s LED against a R7s Mercury rod 230 Watt swapped (uplight). This LED like most is not dimmable, "now I thought to myself" drehste the uplight full on then lights already. Did she also made only in the OFF state, it was flashing even further. Because I wanted to keep the lamp I could not get around the uplight to build and to bridge the Dimmpaneel. (It is not recommended for a layman). The lamp itself is nice and bright with 11 Watt and 230 Watt lamp replaced the wonderful.