Technical Advantage: 220~240Vac 3-100W inline trailing edge phase-cut dimmer; dimming process is silent with no buzzing sound. Lowest brightness can be preset; dimming range is 0-100%. Built-in protections include overload, over current, and over temperature protection. Eye Protection: Smooth light transition from 0% to 100% helps eyes gradually adapt to changes in brightness; reduces eye strain and protects against overly bright light. Energy Savings: Compatible with up to 50 dimmable LED bulbs or 100 incandescent/halogen bulbs; dimming range 0-100% helps reduce energy consumption and extends bulb life. Note: Before purchasing, confirm that your LED bulb is labeled as "dimmable." Non-dimmable LEDs may only turn on/off or flicker when used with this dimmer. Not suitable for inductive loads, fan speed control, or motorized devices. Color: Black Material: Plastic Package Contents: 1 x Dimmer Switch Only the above items are included; other items are not part of the package. Note: Lighting and display differences may cause slight color variations between the product and the image. Measurement error allowed is +/- 1-3 cm.