LED Cord Dimmer: Used to turn on and dim incandescent bulbs, dimmable LED lamps, high-voltage halogen lamps, and halogen lamps with electronic transformers. It cannot be used to control the speed of inductive transformers, fans, and motors. Complies with UKCA standards! Specification: Rated voltage/frequency: 220-240 Vac/50 Hz. Adjustable power: 3-100W. Dimensions (mm): 81*33.4*22*34.8. Single wire connection: 0.75...2.5 mm². Black. Adjust Brightness: With the light on, turn the control knob clockwise to increase brightness until maximum is reached. Turn the control knob counterclockwise to decrease brightness until minimum is reached. Turn the min knob counterclockwise to achieve the desired brightness. Turns on and off instantly, no waiting required. Electronic overheat protection, stops at 80℃, automatically restarts below 80℃. It should be noted that the required LED bulbs must be dimmable to avoid flickering issues with this type of driver.