With a bulb, everything starts with the cap — GU10 goes into a directional spotlight, not into the thread of an ordinary lamp. Light strips come in 5 and 12 metre lengths, and RGBIC means several colours can glow along the strip at once, while plain RGB turns the whole length one shade. Dimmable models such as the Yeelight GU10 W4 need an app or a smart switch — an old rotary dimmer in the wall will not do.
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With a bulb, everything starts with the cap — GU10 goes into a directional spotlight, not into the thread of an ordinary lamp. Light strips come in 5 and 12 metre lengths, and RGBIC means several colours can glow along the strip at once, while plain RGB turns the whole length one shade. Dimmable models such as the Yeelight GU10 W4 need an app or a smart switch — an old rotary dimmer in the wall will not do.