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What a smart bulb does
A smart bulb is controlled from your phone or a handset rather than only the wall switch. You can change the brightness, switch the colour and adjust the warmth without getting up, and group bulbs together so a whole room responds at once. The range covers Wi-Fi models that link to an app and remote-control versions that pair with a supplied handset.
Shapes and cap fittings
Bulbs come in GLS, the rounded household shape, candle for chandeliers and wall lights, and GU10 spotlights for ceilings and tracks. Caps cover ES, the E27 screw, BC, the B22 bayonet, and SES, the smaller E14 screw, alongside the twist-and-lock GU10 pins. Match the cap and shape to your existing fitting before you order.
Colour and white control
RGB plus white models produce coloured scenes for accent and mood lighting, then switch back to a usable white when you need it. Variable-white, or CCT, bulbs hold to white but shift from warm to cool, so the same lamp can be cosy in the evening and crisper for reading or working. Most bulbs here are dimmable through the app or handset.
Where they work
Smart bulbs suit rooms where the look needs to change through the day, such as living rooms, bedrooms and a study or home office. Spotlight versions drop straight into existing downlight and track fittings, while colour-changing GLS and candle bulbs sit well in lamps and pendants on show.
How to choose
Decide first whether you want app control over Wi-Fi or a simpler bulb-and-remote pairing. Then choose RGB plus white if you want colour, or variable-white if you only need to tune the shade of white. Confirm the cap fits your holder, and check the bulb is dimmable if you plan to dim it. Free delivery worldwide on all orders over £99.