GU10 LED Spotlight Bulb 4.7W 345lm Non-Dimmable - Daylight 6500K

A GU10 LED spot that draws 4.7W and puts out 345 lumens of 6,500K daylight. The GU10 cap is the two pin push and quarter turn type fitted to most UK downlights and track spots, so it drops into the holder an old halogen came out of, with no driver, transformer or rewiring to sort out. The retail pack rates it against a 50W conventional spot, which is the swap most people are making here. Light leaves the lens in a 110 degree beam, so it spreads across a surface rather than picking out one point.

Daylight at 6,500K is the coolest, whitest light on the shelf: crisp and slightly blue next to the yellow of a traditional bulb, and the one to choose where you want to see clearly rather than settle in for the evening. It earns its keep over a kitchen worktop, in a utility room, garage, workshop or home office, and it suits hobby and craft work where colours need to read true. The wide beam helps in a ceiling run, because neighbouring spots overlap and leave fewer dark patches on the floor below. The IP20 rating keeps it to dry indoor positions.

There is no dimming, so keep this one off any circuit with a dimmer on the wall: a non dimmable lamp behind a dimmer can buzz, flicker or fail early. The pack states a 10 year lamp life, 10,000 hours of use and more than 10,000 on and off switching cycles, which counts in a hallway or landing where the switch gets constant traffic. It runs on 220-240V mains, renders colour above 80 CRI and is mercury free, both printed on the pack. Its energy label reads class F at 4kWh per 1,000 hours. Each box holds a single bulb and we sell them in fives.

Will this fit the holders my old halogen spotlights used?

If the old lamp had two small pins that push in and twist a quarter turn, yes. GU10 runs on mains voltage, so there is no transformer or driver to change.

Can I put it on a dimmer switch?

No. This lamp is not dimmable, and running a non dimmable LED behind a wall dimmer can cause buzzing, flicker or early failure. Use a plain on and off switch.

How bright will it feel against the halogen it replaces?

The pack rates its 345 lumens as the equivalent of a 50W conventional spot, so expect a similar useful brightness from only 4.7W of power.

What does 6,500K daylight look like in a room?

It is the coolest white commonly sold: clean and slightly blue, closer to midday sky than to candlelight. Good for seeing detail, less suited to a room you relax in.

How wide is the beam?

The specification gives 110 degrees, a wide spread rather than a tight pool, so a run of ceiling spots will overlap and cover a floor more evenly.

How many bulbs do I get, and how many must I order?

Each box contains one bulb. The minimum order on this listing is five units, sold in multiples of five, which suits a five spot kitchen or hallway run.