E27 (ES) LED GLS Bulb 4.9W 470lm Non-Dimmable - Warm White 2700K

This is a standard-shaped LED bulb with the E27 screw cap, the larger of the two screw fittings used on UK pendants and table lamps. It draws 4.9W and gives 470 lumens at 2700K, a warm white close in colour to the old incandescent bulbs. The retail pack rates it as a 40W replacement and prints a 15 year lifespan. The GLS outline is the familiar pear shape, so it sits in a shade or a glass diffuser much the way the bulb it replaces did.

470 lumens is a comfortable output rather than a bright one. It suits bedside lamps, hallway pendants, table lamps and landing fittings, and it works well in multi-bulb fittings where three or five lamps add up. For a single pendant over a kitchen worktop you would usually want something nearer 800 lumens. The 2700K warm white reads as a yellow-toned light that flatters wood, brick and warm paint, and it pairs cleanly with other warm white lamps in the same room; mixing it with a cooler 4000K bulb on one ceiling is what makes a room look patchy.

This lamp is not dimmable, so give it a plain on/off switch; on a trailing or rotary dimmer it may flicker, buzz or fail early. The beam angle is 240 degrees, wide enough to light a shade all round rather than throw in one direction. Energy rating is F, and the label works from 5kWh per 1000 hours of use. The IP20 rating puts it in dry indoor positions. Each blister holds one bulb, and ordering runs in multiples of ten. Other Energizer LED lamps here include B15 (SBC) candle and golf bulbs and a GU10 spot.

Which fittings take an E27 bulb?

E27 is the larger screw cap, common on pendants, floor lamps and bigger table lamps. Take the old bulb out and compare: the narrower screw cap is E14, and the two are not interchangeable.

Will it be as bright as the 40W bulb I am replacing?

The pack rates it as a 40W replacement and it gives 470 lumens, so the light level should read as familiar rather than brighter. Lumens, not watts, are what you compare on LED.

Can I put it on a dimmer switch?

No. This lamp is non-dimmable, so it needs a plain on/off switch. Wired to a dimmer it may flicker, hum or fail well before the life the pack prints.

What does 2700K warm white actually look like?

It is a soft yellow-toned light rather than a white one, the colour people associate with old filament bulbs. It suits living rooms, bedrooms and hallways where you want a settled, relaxed light.

Is this one bulb or a multipack?

Each blister holds a single bulb. Orders are placed in multiples of ten, so the smallest quantity you can buy is ten individual bulbs rather than one boxed set.

How wide is the light spread?

The beam angle is 240 degrees, so light goes out sideways and upwards as well as down. That fills a fabric shade or an opal globe evenly instead of throwing one bright pool.