GU10 LED Bulb 2.4W 230lm Non-Dimmable - Cool White 4000K

This is a GU10 LED spotlight running at 2.4W and giving 230 lumens through a 36 degree beam. The GU10 cap is the twist-and-lock type with two stubby pins that turn a quarter turn into a sprung holder, so it drops straight into the recessed downlights and track heads most UK homes already have. The light is 4,000K cool white, a clean neutral white rather than the yellow cast of an old halogen. The pack rates it as a 35W replacement, prints a 15 year lifespan at 15,000 hours, and carries energy class E.

A 36 degree beam sits on the narrow side of what GU10 lamps offer, so it pools light rather than washing a wall with it. That suits a run of ceiling spots over a kitchen worktop, where you want the light landing on the surface you are working at instead of spilling across the floor. It also works in track heads aimed at shelving, artwork or a splashback, and in recessed spots down a hallway. Cool white at 4,000K keeps whites reading as white and stops pale worktops drifting towards cream, which is why it is usually chosen for kitchens, utility rooms, garages and home offices rather than a sitting room, where warm white is the more restful option.

There is no dimming: the pack marks it non-dimmable, so give it a plain on/off switch. Left on a dimmer circuit an LED like this can flicker, buzz or fail early, so swap the dimmer for a standard switch before fitting. Each box holds one lamp, and the minimum order is 12, in multiples of 12, which suits doing a whole ceiling at once and keeping two spares in a drawer. If warm white suits the room better, we also list a 3.6W GU10 LED bulb in warm white 3000K.

Will this fit my existing GU10 downlights?

Yes, if the holder takes a GU10 twist-and-lock cap. Push the two pins in and turn a quarter turn to lock it.

How bright is 2.4W, and what is it replacing?

It gives 230 lumens, and the pack rates it as a 35W replacement, so it stands in for an older 35W halogen spot at a fraction of the load.

Can I use it with a dimmer switch?

No. The pack marks it non-dimmable, so it needs a plain on/off switch. On a dimmer it may flicker or buzz.

What does 4,000K cool white actually look like?

It is a neutral white with no yellow in it, crisper than warm white, and good where you want surfaces and colours read accurately.

How wide is the beam, and where should I point it?

The beam is 36 degrees, a narrow cone that pools light. Aim it at a worktop, shelf or picture rather than using it to light a whole room evenly.