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Light Bulbs & Fluorescent Lights

What type of bulb and socket to choose? We will advise you.

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Socket

The base part of the bulb that connects to the lamp. There are several types of fittings:

E27

 27 mm in diameter, this is one of the most common fittings. It’s used by almost every light source with a voltage of 230 V, i.e. classic incandescent lamps, halogen, energy-saving, and LED bulbs. You can usually find this type in ceiling or wall lighting fixtures or chandeliers.

E14

 Has the same screw as E27, so once again, it’s used in classic incandescent lamps, halogen, energy-saving, and LED bulbs. They differ only in diameter, which in this case is 14 mm. The operating voltage is 230 V. Commonly used in smaller lamps, spot lights, and candelabra and chandeliers consisting of a large number of light bulbs.

GU10

 This slot has no screw. Instead, it has two pins with a diameter of 5 mm that you snap into the lamp and twist slightly. Its operating voltage is 230 V and this type is most commonly encountered in halogen or LED bulbs. It is used in ceiling lights, spot lights, or in bathroom and lavatory fixtures.

G4

 A threadless socket, it features two pins 4 mm apart that you snap into the lamp. Its operating voltage is 12V. Most commonly found in kitchen counter lighting fixtures, low ceilings, or bars.

GU5.3

 Another threadless socket, it features two pins 1 mm in diameter and spaced 5.3 mm apart. The socket is designed for 12V. The light source is usually a halogen or LED bulb. Mainly used in smaller lamps and spot lights.

G9

 A threadless socket similar to GU10. It has two pins that snap into the lamp. This is the smallest size for 230V halogen and LED bulbs. Most commonly used in ceiling fixtures, spot lights, or in bathroom and lavatory fixtures.

R7s

 A linear, tube-shaped socket inserted into a fork with a pitch of 78-189 mm. Its operating voltage is 230 V. Used in halogen spotlights, LED lamps, floor lamps, or architectural lighting fixtures.

Technology

Incandescent light bulbs

  • The cheapest light source when it comes to purchase cost. The massive heat loss, however, makes them very inefficient. Over 90% of the consumed energy is converted into heat and only the remaining 10% into light. Their service life is also low – 1,000 hours on average.

Halogen bulbs

  • About 30% more efficient than incandescent bulbs. Illuminate at the full power right after you switch them on, can be dimmed, and their purchase cost is lower than that of LED bulbs. Their operating costs are considerably higher, so they are mainly used in places where you need strong light for a short time. Their service life is 2,000 to 3,000 hours.

Energy-effcient light bulbs

  • Roughly 75% more efficient than incandescent bulbs. After switching, it takes a while before they reach their maximum brightness, so they aren’t suitable for places where lights are often turned on and off. Lose their original luminance after a few years. Their service life ranges between 6,000 and 20,000 hours.

LED bulbs

  • The latest and most efficient technology. Their service life is remarkable - usually between 20,000 and 50,000 hours. Achieve high brightness with minimum energy consumption. A 9W LED bulb is equivalent to a 60W halogen lamp.
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862 Results
4.6 55×
Tesla - LED bulb GX53, 6W, 230V, 480lm, 25 000h, 4000K daylight white, 220deg
LED Bulb - lamp cap GX53, power input 6 W, 230 V, luminous flux 480 lm, neutral light, diameter of 7,4 cm, lifespan 25000 h, energy label F, 1 piece in package
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4.0
OSRAM dimmable LED bulb E27 6,5 W Vintage 1906, warm white
LED Bulb , power input 6,5 W, luminous flux 725 lm, warm light (2400 K), lifespan 15000 h, energy label E, 1 piece in package
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5.0
OSRAM clear LED bulb E27 3.4W VINTAGE CLASSIC A, warm white
LED Bulb - lamp cap E27, power input 3,4 W, luminous flux 470 lm, warm light (2700 K), lifespan 15000 h, energy label D, 1 piece in package
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4.0
Nedis LED bulb, E14, candle, 2,8 W, 250 lm, 2700 K, 3 pieces
LED Bulb - lamp cap E14, power input 2,8 W, 230 V, luminous flux 250 lm, lifespan 15000 h, energy label F, 3 in package
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4.0
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Oven Bulb - energy label G, power input 10 W, 230 V, Filament, luminous flux 30 lm, warm light (2700 K), diameter 2,5 cm, lifetime 1000 h, 2 pieces in the package
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4.3
Philips LED 60W G95 E27 4000K CL UE SRT4
LED Bulb , power input 4 W, 230 V, luminous flux 840 lm, neutral light (4000 K), diameter of 9,5 cm, lifespan 50000 h, energy label A, 1 piece in package
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Order Code: PHLS25027
4.3 10×
RETLUX RLL 602 A60 E27 bulb 7W DL D
LED Bulb - lamp cap E27, power input 7 W, 230 V, luminous flux 950 lm, cool light (6500 K), lifespan 25000 h, energy label D, 1 piece in package
69,-
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Order Code: RTLX24039
3.8
OSRAM SPC. T26/57, E14, 15W, 300 °C, matt
Oven Bulb - energy label G, power input 15 W, 230 V, Filament, luminous flux 85 lm, warm light (2700 K), diameter 2,6 cm, lifetime 1000 h
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4.8
RETLUX RFL 602 Filament A60 E27 bulb 8W WW D
LED Bulb - lamp cap E27, power input 8 W, 230 V, luminous flux 1080 lm, warm light (2700 K), lifespan 25000 h, energy label D, 1 piece in package
109,-
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Order Code: RTLX24021
RETLUX RFL 604 Filament A60 E27 4 W WW A
LED Bulb - lamp cap E27, power input 4 W, 230 V, filament, luminous flux 840 lm, warm light (3000 K), diameter of 6 cm, lifespan 6,94 h, energy label A, 1 piece in package
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4.7
Xtend Home XTH-LED-E1448T
LED Bulb - smart, lamp cap E14 - lamp cap E14, power input 4,8 W, 240 V, luminous flux 450 lm, WiFi 2,4 GHz, compatible with Tuya, control via app in Czech, lifespan 25000 h, energy label F, 1 piece in package
Discounted -10 % 259,- 289,-
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Order Code: Xtend25019
2.2 21×
RETLUX RLL 457 R7S J78 4,5W LED COB WW
LED Bulb - lamp cap R7s, power input 4,5 W, 230 V, luminous flux 500 lm, warm light, diameter of 1,6 cm, lifespan 15000 h, energy label F, 1 piece in package
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4.0
Rabalux Tubular T39, 9W, E27, 806Lm, 3000K
LED Bulb , power input 9 W, 230 V, luminous flux 806 lm, warm light (3000 K), diameter of 3,9 cm, lifespan 20000 h, energy label F, 1 piece in package
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2.6 17×
RETLUX RLL 458 R7S J118 8W LED COB WW
LED Bulb - lamp cap R7s, power input 8 W, 230 V, luminous flux 900 lm, warm light, diameter of 1,6 cm, lifespan 15000 h, energy label F, 1 piece in package
219,-
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Order Code: RTLX17116
Philips Smart LED WFB 100W A60 E27 RGB
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 12,5 W, 230 V, luminous flux 1521 lm, adjustable light temperature (2200-6500 K), diameter of 6 cm, WiFi 2,4 GHz, compatible with Apple Siri shortcuts, Google Home, control via app in Czech, lifespan 15000 h, energy label E, 1 piece in package
Discounted -14 % 365,- 429,-
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Order Code: PHLS26001
Philips Hue LG Triangle
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 6,8 W, 230 V, luminous flux 500 lm (2000 K), Bluetooth, compatible with Apple Home, Google Home, Samsung SmartThings, Philips Hue, control via app in both Czech and English, lifespan 25000 h, energy label G, 1 piece in package
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Hynek Medřický Biodynamic LED bulb Vitae 3in1 EEN
LED Bulb - lamp cap E27, 230 V, adjustable light temperature (1200-2700 K), diameter of 7 cm, lifespan 15000 h, energy label G, 1 piece in package
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EMOS Classic MR16, GU10, 7 W (60 W), 800 lm, warm white, dimmable
LED Bulb - lamp cap GU10, power input 7 W, 230 V, luminous flux 800 lm, warm light (3000 K), diameter of 5 cm, lifespan 25000 h, energy label E, 1 piece in package
99,-
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In stock > 20 pcs
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Order Code: EMOS25196
4.0
OSRAM SPC. T25/57, E14, 10W, 300 °C, matt - pack of 2
Oven Bulb - energy label G, power input 10 W, 230 V, Filament, luminous flux 30 lm, warm light (2700 K), diameter 2,5 cm, lifetime 1000 h, 2 pieces in the package
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In stock > 5 pcs
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Order Code: osra25112
Philips Hue White Ambiance 6W 810 E27 4pcs
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 6 W, 230 V, luminous flux 800 lm (1000 K), Bluetooth, compatible with Apple Home, Google Home, Philips Hue, control via app in both Czech and English, lifespan 25000 h, energy label D, 4 in package
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Order Code: PHLS25080
Philips Hue Essential White and colour Ambiance 8W 806 E27 Starter Kit
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 8 W, 230 V, luminous flux 806 lm (2200 K), Bluetooth, compatible with Apple Home, Google Home, Philips Hue, control via app in both Czech and English, lifespan 25000 h, energy label F, 2 in package
2,319,-
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Order Code: PHLS25094
Philips Smart LED WFB 40W C37 E14 922-65 RGB 3CT/6
LED Bulb - smart, lamp cap E14 - lamp cap E14, power input 4,9 W, 230 V, luminous flux 470 lm, adjustable light temperature (2200-6500 K), diameter of 3,9 cm, WiFi 2,4 GHz and Bluetooth, compatible with Apple Siri shortcuts, Google Home, Samsung SmartThings, IFTTT, control via app in Czech, lifespan 15000 h, energy label F, 3 in package
New arrival 979,-
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Order Code: PHLS26073
Philips Smart LED WFB 60W A60 E27
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 7 W, 230 V, filament, luminous flux 806 lm, adjustable light temperature (2700-6500 K), diameter of 6 cm, WiFi 2,4 GHz, compatible with Apple Siri shortcuts, Google Home, control via app in Czech, lifespan 15000 h, energy label E, 1 piece in package
Discounted -5 % 331,- 349,-
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In stock
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Order Code: PHLS26006
1.0
Philips Hue Essential White and colour Ambiance 4,7W 345 GU10 Starter Kit
LED Bulb - smart, lamp cap GU10 - lamp cap GU10, power input 4,7 W, 230 V, luminous flux 345 lm (2200 K), Bluetooth, compatible with Apple Home, Google Home, Philips Hue, control via app in both Czech and English, lifespan 15000 h, energy label F, 3 in package
2,829,-
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In stock > 5 pcs
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Order Code: PHLS25095
In the category Light Bulbs & Fluorescent Lights on Alza.cz, we currently have a total of 923 products, which you can easily buy online and get quickly delivered. See all of your purchases and make orders on our easy-to-use app.
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