GU10 LED Bulb 4.7W 350lm Non-Dimmable - Cool White 4000K

This is a GU10 LED spotlight rated at 4.7W and giving 350 lumens of cool white light at 4000K. The GU10 cap is the two pin twist and lock fitting used in most mains voltage downlights and track spots, so if the lamp you are replacing has two small pins on its base rather than a screw thread or a bayonet, this is the right shape to order. The beam angle is 36 degrees, a medium spread rather than a tight spot, so light falls in a defined pool with soft edges. It is non dimmable and rated IP20.

Cool white at 4000K is a neutral light: whiter than the 2700K and 3000K warm whites most living rooms use, without the blue cast of 6500K daylight. That makes it a sensible choice over a kitchen worktop, in a utility room, above a workbench in a garage or in a home office where you want to see detail. On a run of ceiling downlights it keeps colours honest, so paint and tiling look close to how they read in daylight. If you are replacing one lamp in an existing circuit, match the colour temperature of the rest; a single 4000K lamp among 2700K ones stands out at once.

This lamp is not dimmable, so it belongs on a plain on and off switch. Fitted to a dimmer circuit it may flicker, buzz or fail early, so pick a dimmable lamp where a dimmer is in place. The energy rating is F, and the energy label gives 5 kWh per 1000 hours of use. The manufacturer does not state an equivalent halogen wattage for this lamp. Each unit is one boxed bulb and the minimum order is 12, sold in multiples of 12. It sits alongside our wider range of LED bulbs, including another GU10 at 3.6W in warm white 3000K.

Will this fit my existing downlights?

If the old lamp has two short pins on its base that twist a quarter turn to lock, it is a GU10 and this will fit. A screw thread or a push in bayonet is a different cap.

Can I use it on a dimmer switch?

No. This lamp is non dimmable, so it needs a plain on and off switch. On a dimmer it may flicker, buzz or fail well before its time.

Does it need a transformer or driver?

No. GU10 lamps run straight off 240V mains, so they wire into the fitting with nothing in between. Only 12V caps such as MR16 need a separate transformer.

What wattage of halogen does 350 lumens replace?

The manufacturer does not state an equivalent halogen wattage for this lamp, so no equivalence figure is quoted. Judge it on the 350 lumens and the 36 degree beam instead.

What does 4000K cool white actually look like?

It reads as clean and neutral, close to mid morning light. Whites look white rather than creamy, which helps in kitchens, garages and work areas where you want clarity.

How many bulbs do I receive, and what is the minimum order?

Each unit is one boxed bulb. The minimum order is 12 units, sold in multiples of 12, so a full set of downlights can be changed together.