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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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844 Results
4.8 218×
Tesla BULB, E27, 6W, 230V, 640lm, 25 000h, 6500K cold white, 220deg
LED Bulb , power input 6 W, 230 V, luminous flux 640 lm, cool light (6500 K), diameter of 6 cm, lifespan 25000 h, energy label F, 1 piece in package
2.89 €
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In stock > 10 pcs
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Order Code: TslLight25012
4.4
Xtend Home XTH-LED-E2714T
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 14 W, 240 V, luminous flux 1400 lm, WiFi 2,4 GHz, compatible with Tuya, control via app in Czech, lifespan 25000 h, energy label F, 1 piece in package
11.90 €
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In stock > 10 pcs
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Order Code: Xtend25018
4.9 26×
EMOS Classic candle, E27, 4.2 W (40 W), 470 lm, neutral white
LED Bulb - lamp cap E27, power input 4,2 W, 230 V, luminous flux 470 lm, neutral light (4000 K), diameter of 3,5 cm, lifespan 30000 h, energy label E, 1 piece in package
2.29 €
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In stock > 5 pcs
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Order Code: EMOS24122
4.4 12×
Tesla - LED bulb FILAMENT RETRO BULB E27, 7,2W, 230V, 806lm, 25 000h, 2700K warm white, 360deg
LED Bulb - lamp cap E27, power input 7,2 W, 230 V, luminous flux 806 lm, warm light (2700 K), diameter of 6 cm, lifespan 25000 h, energy label E, 1 piece in package
3.79 €
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In stock 3 pcs
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Order Code: TslLigh22_71
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
9.09 €
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In stock > 10 pcs
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Order Code: RTLX17116
4.3 10×
RETLUX RLL 600 A60 E27 bulb 7W WW D
LED Bulb - lamp cap E27, power input 7 W, 230 V, luminous flux 950 lm, warm light (3000 K), lifespan 25000 h, energy label D, 1 piece in package
2.89 €
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In stock 2 pcs
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Order Code: RTLX24036
5.0
Tesla GLOBE G80 VINTAGE, E27, 4, 2W, 230V, 540lm, 2400K, 360deg, gold
LED Bulb , power input 4,2 W, 230 V, filament, luminous flux 540 lm (2400 K), diameter of 8 cm, lifespan 25000 h, energy label D, 1 piece in package
8.29 €
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In stock 1 pcs
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Order Code: TslLight23_009
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
7.89 €
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In stock > 10 pcs
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Order Code: RTLX17115
5.0
RETLUX RLT 204 LED tube 120cm 18W CW
LED Lamp - energy label D, power input 18 W, 230 V, luminous flux 2450 lm, neutral light (4000 K), colour Rendering Index (CRI) 80 Ra, lifetime 500 h
8.29 €
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In stock 5 pcs
Order Code: RTLX24074
4.8 218×
Tesla - LED bulb BULB E27, 8W, 230V, 806lm, 25 000h, 6500K cold white, 220deg
LED Bulb - lamp cap E27, power input 8 W, 230 V, luminous flux 806 lm, cool light, diameter of 6 cm, lifespan 25000 h, energy label F, 1 piece in package
3.29 €
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In stock 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: TslLight25011
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 -8 % 10.90 € 11.90 €
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In stock > 10 pcs
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Order Code: Xtend25019
5.0
OSRAM gold LED bulb E14 4.9W VINTAGE CLASSIC P, warm white
LED Bulb - lamp cap E14, power input 4,9 W, luminous flux 470 lm, warm light (2200 K), diameter of 4,5 cm, lifespan 15000 h, energy label F, 1 piece in package
4.79 €
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In stock > 20 pcs
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Info
Order Code: osra25033
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
2.39 €
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In stock 4 pcs
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Order Code: osra25114
5.0
RETLUX RLL 665 R63 E27 Spot 8W WW D
LED Bulb - lamp cap E27, power input 8 W, 230 V, luminous flux 1080 lm, warm light (3000 K), lifespan 25000 h, energy label D, 1 piece in package
3.69 €
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In stock 3 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: RTLX24069
5.0
RETLUX RLL 624 R63 E27 Spot 10W WW D
LED Bulb - lamp cap E27, power input 10 W, 230 V, luminous flux 1350 lm, warm light (3000 K), lifespan 25000 h, energy label D, 1 piece in package
4.19 €
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In stock 2 pcs
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Info
Order Code: RTLX24071
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
4.59 €
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In stock 2 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: RTLX24021
3.0
Philips Smart LED WFB 60W G125 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 12,5 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
18.90 €
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In stock 2 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: PHLS26009
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
107.90 €
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In stock > 5 pcs
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Info
Order Code: PHLS25080
4.0
OSRAM SPC. T25/57, E14, 10W, 300 °C, clear - 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
3.09 €
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In stock > 10 pcs
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Info
Order Code: osra25111
3.0
OSRAM SPC. T26/57, E14, 25W, 300 °C, matt
Oven Bulb - energy label G, power input 25 W, 230 V, Filament, luminous flux 140 lm, warm light (2700 K), diameter 2,6 cm, lifetime 1000 h
2.59 €
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In stock > 10 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: osra25116
4.9 26×
EMOS Classic candle E27 4,2 W (40 W) 470 lm, warm white
LED Bulb - lamp cap E27, power input 4,2 W, 230 V, luminous flux 470 lm, warm light (2700 K), diameter of 3,5 cm, lifespan 30000 h, energy label E, 1 piece in package
2.29 €
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In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: EMOS24186
5.0
EMOS Vintage G95 / E27 / 4,5 W (40 W) / 420 lm / warm white
LED Bulb - lamp cap E27, power input 4,5 W, 230 V, luminous flux 420 lm (2200 K), diameter of 9,5 cm, lifespan 25000 h, energy label F, 1 piece in package
from  5.39 €
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In stock 1 pcs
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Info
Order Code: EMOS24163
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
2.89 €
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In stock 3 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: RTLX24039
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
17.90 €
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In stock > 10 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: PHLS26001
In the category Light Bulbs & Fluorescent Lights on Alza.sk, we currently have a total of 864 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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