I have such a LED dimmer in use of the works perfectly. Unfortunately, both the dimmers Neuliefeurng the quality is no longer so as a year ago. The potentiometer is shaking now, and now is no longer made of metal (such as on the product photo) But the turning spindle is made of plastic. In addition, the two new dimmer the old dimmer of this series, none of the lamps is booming. The function is still there, but I disturb the slight humming noise and the shaky Poti.