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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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664 Results
RETLUX RLL 635 G45 E14 miniG 8W WW D - LED Bulb
5 variants
4.9 31×
RETLUX RLL 635 G45 E14 miniG 8W WW D
LED Bulb - lamp cap E14, power input 8 W, 230 V, luminous flux 1080 lm, warm light (3000 K), lifespan 25000 h, energy label D, 1 piece in package
4 €
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In stock > 10 pcs
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Order Code: RTLX24055
RETLUX RLL 613 GU10 bulb 5W WW D - LED Bulb
6 variants
4.1 73×
RETLUX RLL 613 GU10 bulb 5W WW D
LED Bulb - lamp cap GU10, power input 5 W, 230 V, luminous flux 675 lm, warm light (3000 K), lifespan 25000 h, energy label D, 1 piece in package
2.89 €
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Order Code: RTLX24044
Tesla - LED bulb BULB E27, 20W, 230V, 2500lm, 25 000h, 3000K warm white 220st - LED Bulb
2 variants
4.4 19×
Tesla - LED bulb BULB E27, 20W, 230V, 2500lm, 25 000h, 3000K warm white 220st
LED Bulb - lamp cap E27, power input 20 W, 230 V, luminous flux 2500 lm, warm light (3000 K), diameter of 8 cm, lifespan 25000 h, energy label E, 1 piece in package
8.89 €
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Order Code: TslLight23_008
EMOS Classic MR16, GU10, 7 W (60 W), 806 lm, warm white, 3 pcs - LED Bulb
10 variants
4.8 216×
EMOS Classic MR16, GU10, 7 W (60 W), 806 lm, warm white, 3 pcs
LED Bulb - lamp cap GU10, power input 7 W, 230 V, luminous flux 806 lm, warm light (3000 K), diameter of 5 cm, lifespan 30000 h, energy label E, 3 in package - from 2.91 €/ks
from  8.73 €
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Order Code: EMOS24117
Nedis LED bulb, E14, candle, 4,9 W, 470 lm, 2700 K, 3 pieces - LED Bulb
Nedis LED bulb, E14, candle, 4,9 W, 470 lm, 2700 K, 3 pieces
LED Bulb - lamp cap E14, power input 4,9 W, 230 V, luminous flux 470 lm, lifespan 15000 h, energy label F, 3 in package
Amazing Deal 8.09 €
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In stock 1 pcs
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Order Code: Nedis24044
EMOS Filament candle, E14, 5,9 W (60 W), 806 lm, warm white - LED Bulb
2 variants
4.9 77×
EMOS Filament candle, E14, 5,9 W (60 W), 806 lm, warm white
LED Bulb , power input 5,9 W, 230 V, filament, luminous flux 806 lm, warm light (2700 K), diameter of 3,5 cm, lifespan 25000 h, energy label D, 1 piece in package
from  4.85 €
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Order Code: EMOS25086
WiZ Tunable White 60W E27 G120 Filament - LED Bulb
4.0 5×
WiZ Tunable White 60W E27 G120 Filament
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 7 W, 230 V, luminous flux 806 lm, adjustable light temperature (2700-6500 K), diameter of 12,5 cm, WiFi 2,4 GHz, compatible with Samsung SmartThings, IFTTT, control via app in both Czech and English, lifespan 15000 h, energy label E, 1 piece in package
16.90 €
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In stock 3 pcs
Order Code: WiZ21019
Tesla BULB, E27, 6W, 230V, 640lm, 25 000h, 6500K cold white, 220deg - LED Bulb
10+ variants
4.8 213×
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
Buy with code ALZADAYS15AT The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Erhalten Sie 15 % Rabatt mit dem Code ALZADAYS15AT. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt. 2.64 €
3.10 €
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In stock > 5 pcs
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Order Code: TslLight25012
RETLUX RSH 105 Wi-Fi smart bulb G9 CCT - LED Bulb
RETLUX RSH 105 Wi-Fi smart bulb G9 CCT
LED Bulb - smart, lamp cap GU10 - lamp cap GU10, power input 4 W, 230 V, luminous flux 500 lm, adjustable light temperature (3000-6500 K), diameter of 2,35 cm, WiFi 2,4 GHz and Bluetooth, compatible with Apple Siri shortcuts, Google Home, Tuya, Manufacturer app, control via app in both Czech and English, lifespan 15000 h, energy label F, 1 piece in package
12.90 €
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In stock 2 pcs
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Order Code: RTLX24015
EMOS LED bulb A60 A CLASS E27 7,2 W 1521 lm neutral white - LED Bulb
10 variants
4.8 419×
EMOS LED bulb A60 A CLASS E27 7,2 W 1521 lm neutral white
LED Bulb - lamp cap E27, power input 7,2 W, 230 V, luminous flux 1521 lm, neutral light (4000 K), diameter of 6 cm, lifespan 50000 h, energy label A, 1 piece in package
from  5.67 €
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Order Code: EMOS24_026
RETLUX REL 39 LED R50 4x6W E14 WW - LED Bulb
2 variants
4.7 63×
RETLUX REL 39 LED R50 4x6W E14 WW
LED Bulb - lamp cap E14, power input 6 W, 230 V, luminous flux 510 lm, warm light (3000 K), diameter of 5 cm, lifespan 25000 h, energy label F, 4 in package
Buy with code ALZADAYS15AT The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Erhalten Sie 15 % Rabatt mit dem Code ALZADAYS15AT. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt. 5.01 €
Discounted -14 % 5.89 € 6.89 €
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In stock > 5 pcs
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Order Code: RTLX17138
TESLA LED Bulb Mini-globe BULB E14, 8W, Warm White - LED Bulb
4 variants
4.8 110×
TESLA LED Bulb Mini-globe BULB E14, 8W, Warm White
LED Bulb - lamp cap E14, power input 8 W, 230 V, luminous flux 900 lm, warm light (3000 K), diameter of 6 cm, lifespan 25000 h, energy label E, 1 piece in package
3.59 €
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In stock > 20 pcs
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Order Code: TSL19011
Philips LED 40W A60 E27 2700K CL UE SRT4 - LED Bulb
5.0 1×
Philips LED 40W A60 E27 2700K CL UE SRT4
LED Bulb - lamp cap E27, power input 2,3 W, 230 V, luminous flux 485 lm, warm light (2700 K), diameter of 6 cm, lifespan 50000 h, energy label A, 1 piece in package
4.09 €
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In stock 2 pcs
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Order Code: PHLS25019
RETLUX RLL 615 GU10 bulb 5W DL D - LED Bulb
6 variants
4.1 73×
RETLUX RLL 615 GU10 bulb 5W DL D
LED Bulb - lamp cap GU10, power input 5 W, 230 V, luminous flux 675 lm, cool light (6500 K), lifespan 25000 h, energy label D, 1 piece in package
2.62 €
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In stock 5 pcs
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Order Code: RTLX24043
RETLUX RLL 470 SMD G4 12V 2W WW - LED Bulb
3.5 2×
RETLUX RLL 470 SMD G4 12V 2W WW
LED Bulb - lamp cap G4, power input 2 W, 12 V, luminous flux 220 lm, warm light (3000 K), lifespan 15000 h, energy label F, 1 piece in package
2.80 €
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In stock > 20 pcs
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Order Code: RTLX24027
Tesla - LED bulb BULB E27, 8W, 230V, 806lm, 25 000h, 3000K warm white, 220st 3pcs in pack - LED Bulb
10+ variants
4.8 213×
Tesla - LED bulb BULB E27, 8W, 230V, 806lm, 25 000h, 3000K warm white, 220st 3pcs in pack
LED Bulb - lamp cap E27, power input 8 W, 230 V, luminous flux 806 lm, warm light (3000 K), diameter of 6 cm, lifespan 25000 h, energy label F, 3 in package - 2.16 €/pcs
6.49 €
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In stock > 10 pcs
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Info
Order Code: TslLigh22_49
RETLUX RLL 634 G45 E14 miniG 6W DL D - LED Bulb
5 variants
4.9 31×
RETLUX RLL 634 G45 E14 miniG 6W DL D
LED Bulb - lamp cap E14, power input 6 W, 230 V, luminous flux 810 lm, cool light (6500 K), lifespan 25000 h, energy label D, 1 piece in package
3.19 €
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In stock > 20 pcs
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Order Code: RTLX24059
RETLUX RLL 627 C37 E14 candle 6W CW D - LED Bulb
5 variants
4.5 50×
RETLUX RLL 627 C37 E14 candle 6W CW D
LED Bulb - lamp cap E14, power input 6 W, 230 V, luminous flux 810 lm, neutral light (4000 K), lifespan 25000 h, energy label D, 1 piece in package
3.19 €
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In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: RTLX24049
MOES Matter Wi-Fi Bulb, RGB + CW, 5W, GU10 - LED Bulb
4.8 19×
MOES Matter Wi-Fi Bulb, RGB + CW, 5W, GU10
LED Bulb - smart, lamp cap GU10 - lamp cap GU10, power input 27 W, 230 V, luminous flux 400 lm, adjustable light temperature (2700-6500 K), diameter of 5 cm, WiFi 2,4 GHz, compatible with Tuya, Samsung SmartThings, Manufacturer app, control via app in both Czech and English, lifespan 20000 h, energy label F, 1 piece in package
9.79 €
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In stock > 10 pcs
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Info
Order Code: Moes2404
Self-Monitoring Starter kit WiZ EU - IP Camera
Self-Monitoring Starter kit WiZ EU
IP Camera - interior, 360° viewing angle, motoric rotation, fixed lens, mobile app notifications, connection over WiFi 2,4 GHz, powered by the mains, control via apple Siri shortcuts and manufacturer app, IP20 IP rating, power cable included, dimensions 6.5 × 7 × 12 cm (H×W×D)
182.90 €
Buy
In stock 2 pcs
Order Code: WiZ23013
RETLUX RLL 610 A70 E27 bulb 15W WW D - LED Bulb
4.8 6×
RETLUX RLL 610 A70 E27 bulb 15W WW D
LED Bulb - lamp cap E27, power input 15 W, 230 V, luminous flux 2050 lm, warm light (3000 K), diameter of 7 cm, lifespan 25000 h, energy label D, 1 piece in package
5.29 €
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In stock 3 pcs
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Info
Order Code: RTLX24030
RETLUX RLL 459 E14 6W hood oven WW - LED Bulb
4.7 37×
RETLUX RLL 459 E14 6W hood oven WW
LED Bulb - lamp cap E14, power input 6 W, 230 V, luminous flux 600 lm, diameter of 2,1 cm, lifespan 15000 h, energy label F, 1 piece in package
4.90 €
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In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: RTLX17117
Tesla BULB, E27, 6W, 230V, 640lm, 25,000h, 4000K neutral white, 220deg - LED Bulb
10+ variants
4.8 213×
Tesla BULB, E27, 6W, 230V, 640lm, 25,000h, 4000K neutral white, 220deg
LED Bulb , power input 6 W, 230 V, luminous flux 640 lm, neutral light (4000 K), diameter of 6 cm, lifespan 25000 h, energy label F, 1 piece in package
Buy with code ALZADAYS15AT The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Erhalten Sie 15 % Rabatt mit dem Code ALZADAYS15AT. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt. 3.31 €
3.89 €
Buy
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: TslLight25013
Philips LED 60W ST64 E27 2700K CL UE SRT4 - LED Bulb
5.0 3×
Philips LED 60W ST64 E27 2700K CL UE SRT4
LED Bulb - lamp cap E27, power input 4 W, 230 V, luminous flux 840 lm, warm light (2700 K), diameter of 6,4 cm, lifespan 50000 h, energy label A, 1 piece in package
10 €
Buy
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: PHLS25025
 

Light Bulbs & Fluorescent Lights

Alza Days LED Bulbs LED bulbs Light Bulbs & Fluorescent Lights Sorted by Socket by Socket Fluorescent Tube Lamps Fluorescent Tubes Smart Light Bulbs Light Sources Efficient Lamps Efficient Spotlight Bulbs Spotlight Oven Light Bulbs Oven Vintage & Retro Light Bulbs Retro Light Bulb Value Packs Value Packs AlzaPower Light Bulbs & Fluorescent Lights AlzaPower Jak vybrat žárovku
 

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Light Bulbs & Fluorescent Lights

In the category Light Bulbs & Fluorescent Lights on Alza.at, we currently have a total of 664 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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