LED Dimmer: Used to turn on and dim incandescent lamps, dimmable LED lamps, high-voltage halogen lamps, and halogen lamps with electronic transformers. It cannot be used to control the speed of the inductive transformer, fan, or motor. UKCA and CE compatible! SPECIFICATIONS Rated voltage / Frequency: 220-240VAC / 50Hz Adjustable power: 3-100W Dimensions (mm): 81*33.4*22*34.8 Single-wire connection: 0.75... 2.5 mm White. Adjust light intensity: Light is on. Turn the control knob clockwise: light becomes stronger until maximum brightness. Turn the control knob counterclockwise: light dims to minimum brightness. Turn the MIN knob counterclockwise to achieve desired brightness. Turn on and off, no need to wait. Electronic overheating protection shuts off at 80 degrees, opens automatically below 80 degrees. It should be specified that the required LED lamps must be dimmable to avoid flicker issues with this type of dimmer.