Plastic shell, smooth without burrs, durable. Embedded power line switch, inline switch, single line control dimming, easy to use. Minimum brightness preset function, dimming range can be customized to a certain percentage through simple steps. Easy to install. Cut the wire where the switch needs to be installed, then connect the wire into the terminal and tighten it. Suitable for dimmable LED bulbs, incandescent bulbs, halogen lamps, table lamps, floor lamps, and other compatible lighting fixtures. Adjustable power range: LED bulb: 2W - 25W; CFL bulb: 2W - 25W; Incandescent/Halogen bulb: 5W - 80W. Smooth dimming without flicker, with overheating protection, safe to use. Switch knob dimming function, 0-100% brightness adjustment range. Dimmable LED Range: 2W - 25W. Dimmable CFL Range: 2W - 25W. Incandescent/Halogen Bulb Range: 5W - 80W. Features: Full range dimming. Product Name: LED Dimmer Switch. Voltage: 220V. Color: Black. Material: Plastic. Package Contents: 1 x LED Dimmer Switch. Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product. Measurement may vary by +/- 1-3cm.