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4.7w E27 TUBE LED, SMD 3000k lamp 380 Lumens

The E27 TUBE LED 4.7w Type SMD LED lamp is a great replacement for E27 Compact fluorescent tube bulbs. Energy consumption 5kWh/1000h. Diameter 4.5cm. Length 13.9cm. 3000k Warm White colour temperature. 380 Lumens. Colour rendering CRI 81. Energy class A.

Current draw: 40mA. Especially designed for outdoor fittings with limited space. e.g the Rusty Range of bollards.

LED lamp energy saving comparison

Lamp colour ( Kelvins )

The colour of a lamp is defined as a measurement called kelvins. A standard GLS light bulb in your house would be 2,700 kelvins which is in the warm colour spectrum and a lamp with 5,000 kelvins would be at the very cold white spectrum. Getting the right colour temperature of a lamp does matter as the warm colour wavelength helps to soften the tone of the area and gives a warm soft relaxed feel and ideal for colourful flower beds and rockery areas especially with wooden bark and at the other end of the scale a 4,000 to 5,000 kelvin lamp colour would be used against a light background such as white walls or to accentuate grey blueish foliage in shrubs and small trees.  When you buy a new, energy efficient bulb, keep your application and colour scheme in mind and make sure to buy the bulb with a colour temperature to match.

Light output ( Lumens )

The amount of light that is produced by a lamp is called lumens and the more lumens the lamp has the brighter it will be. Lumens work in conjunction with kelvins and watts should not be taken in isolation of each other, for example if you had a very warm white lamp at 2,700 kelvins and it produced 300 lumens and you then had another lamp which was a cool white 5,000 kelvins which also produced 300 lumens the cooler lamp colour would always appear brighter to the naked eye than the warmer one this is due to the receptors in the eye that react better to a white light spectrum. Another factor on how bright a light may appear is contrast so if you shine a white 5,000 kelvin light on to a dark wall and a warm 2,700 kelvin lamp on to a white wall the warmer lamp would appear brighter due to the contrast of the material it is focused on. So when choosing a lamp always take in to account the area you want to illuminate and think about Kelvins ( colour ), Lumens ( brightness) and contrast ( colour of area ) That's what makes LED lights so energy effective as they can produce 500 lumens from a 5w lamp.

Item Specifications

Voltage: 240V
Length: 13.9cm
Energy Rating: A
Lumens: 380 Lumens
Bulb Type: E27
diameter: 4.5cm
watts: 4.7w
lamp life: 20000 hours
colour temperature: 3000 Kelvin