LED cord dimmer: for switching and dimming light bulbs, dimmable LED bulbs, high-voltage halogen bulbs and halogen bulbs with electronic transformers. It cannot be used to control the speed of the inductive transformer, fan and motor. UKCA and CE compliant Specification: Rated voltage/frequency: 220-240 VAC/50Hz. Adjustable power: 3-100 W. Measures (mm): 81 x 33.4 x 22 x 34.8. Single wire connection: 0.75...2.5 mm.black. Adjust brightness: the light is on. Turn the control knob clockwise: The light will be brighter to maximum brightness. Turn the control knob counterclockwise. Light dims to minimum brightness. Turn the MIN knob counterclockwise to get the expected brightness. Turn on and off, no waiting required. Electronic overheating protection, shutdown at 80, automatically opens below 80 It should be noted that the required LED bulbs must be dimmable to avoid flickering problems with this type of dimmer.