【Important Parameters】: Applicable voltage: AC 220-240V, 50/60Hz, rated load: 1W~150W, excellent quality with overload protection, overcurrent protection, overheating protection. 【Note】: Before purchasing, please ensure that your bulb is compatible with a dimmer switch. This dimmer switch is only suitable for dimmable LED lamps, halogen lamps, and incandescent lamps. Otherwise, the bulb can only be turned on/off, it cannot be dimmed, the bulb may not work as expected or flicker. There is no ground wire terminal - Please do not buy if there is a ground wire. 【High Intensity】: Silent and flicker-free during dimming, providing a smooth dimming range from 0 to 100%. Due to the variety of bulb brands and adjustment circuits, there may be compatibility issues between the dimmer and the bulb. If you have any questions, please do not hesitate to contact us. 【Works with Max 150W Dimmable Bulbs】: Black resistor rotary inline dimmer, input voltage AC220-240V, maximum lamp power 150W, please pay attention to the lamp power when dimming. 【Application】: Suitable for LED floor lamp, LED table lamp, LED filament lamp, low voltage halogen lamp transformer, incandescent lamp. Not suitable for use with fluorescent lamps, flat screen fixtures, toroidal transformers or electric motors.