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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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762 Results
Tesla Filament A class, E27, 4W, 840lm, 4000K daylight white, 360deg, clear, 230V, 25 000h - LED Bulb
5 variants
4.7 26×
Tesla Filament A class, E27, 4W, 840lm, 4000K daylight white, 360deg, clear, 230V, 25 000h
LED Bulb - lamp cap E27, power input 4 W, 230 V, luminous flux 840 lm, neutral light (4000 K), diameter of 10,5 cm, lifespan 25000 h, energy label A, 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. 5.29 €
6.22 €
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In stock 2 pcs
Order Code: TES24004
Nedis LED bulb, G9, 4 W, 400 lm, 2700 K - LED Bulb
4.2 6×
Nedis LED bulb, G9, 4 W, 400 lm, 2700 K
LED Bulb - lamp cap G9, power input 4 W, 230 V, luminous flux 400 lm, lifespan 15000 h, energy label F, 1 piece in package
10.90 €
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In stock > 10 pcs
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Order Code: Nedis24053
Nedis LED bulb, E14, R50, 4,9 W, 470 lm, 2700 K - LED Bulb
4.7 3×
Nedis LED bulb, E14, R50, 4,9 W, 470 lm, 2700 K
LED Bulb - lamp cap E14, power input 4,9 W, 230 V, luminous flux 470 lm, lifespan 15000 h, energy label F, 1 piece in package
7.99 €
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In stock 1 pcs
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Order Code: Nedis24043
Tesla LED bulb GU5,3 MR16, 6W, 12V, 540lm, 4000K daylight white - LED Bulb
2 variants
4.8 84×
Tesla LED bulb GU5,3 MR16, 6W, 12V, 540lm, 4000K daylight white
LED Bulb - lamp cap GU5,3, power input 6 W, 12 V, luminous flux 540 lm, neutral light (4000 K), diameter of 5 cm, lifespan 25000 h, energy label G, 1 piece in package
4.19 €
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In stock > 20 pcs
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Order Code: TslLight23_022
EMOS Smart LED bulb GoSmart A60 E27 11 W (75 W) 1 050 lm RGB dimmable Zigbee - LED Bulb
3.9 14×
EMOS Smart LED bulb GoSmart A60 E27 11 W (75 W) 1 050 lm RGB dimmable Zigbee
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 11 W, 230 V, luminous flux 1050 lm, adjustable light temperature (2700-6500 K), diameter of 6 cm, WiFi 2,4 GHz, compatible with Tuya, Lidl Home, EMOS GoSmart, control via app in both Czech and English, lifespan 20000 h, energy label F, 1 piece in package
10.90 €
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In stock 2 pcs
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Order Code: HM521b10
Tesla - LED bulb FILAMENT RETRO BULB, E27, 4,2W, 230V, 470lm, 25 000h, 4000K daylight white, 360deg - LED Bulb
3 variants
4.4 12×
Tesla - LED bulb FILAMENT RETRO BULB, E27, 4,2W, 230V, 470lm, 25 000h, 4000K daylight white, 360deg
LED Bulb - lamp cap E27, power input 4,2 W, 230 V, luminous flux 470 lm, neutral light (4000 K), diameter of 6 cm, lifespan 25000 h, energy label E, 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. 2.71 €
Discounted -6 % 3.19 € 3.40 €
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In stock 2 pcs
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Order Code: TslLigh22_70
Tesla - LED bulb FILAMENT RETRO BULB E27, 7,2W, 230V, 806lm, 25 000h, 2700K warm white, 360deg - LED Bulb
3 variants
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
3.70 €
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In stock 3 pcs
Order Code: TslLigh22_71
Nedis smart LED bulb WIFILRT10G125 - LED Bulb
3.7 3×
Nedis smart LED bulb WIFILRT10G125
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 4,9 W, 230 V, luminous flux 360 lm, adjustable light temperature (1800-6500 K), diameter of 12,5 cm, WiFi 2,4 GHz, compatible with Tuya, Nedis SmartLife, control via app in both Czech and English, lifespan 10000 h, energy label G, 1 piece in package
19.90 €
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In stock 2 pcs
Order Code: Nedis22_12
Nedis Wi-Fi Smart LED Bulb E27 WIFILRT10A60 - LED Bulb
5.0 2×
Nedis Wi-Fi Smart LED Bulb E27 WIFILRT10A60
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 4,9 W, 230 V, luminous flux 360 lm, adjustable light temperature (1800-6500 K), diameter of 6 cm, WiFi 2,4 GHz, compatible with Tuya, Nedis SmartLife, control via app in both Czech and English, lifespan 10000 h, energy label G, 1 piece in package
16.90 €
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In stock 4 pcs
Order Code: NDS22_01
IMMAX NEO LITE Smart Filament Vintage LED E27 7W warm, cool white, dimmable, WiFi - LED Bulb
3.9 13×
IMMAX NEO LITE Smart Filament Vintage LED E27 7W warm, cool white, dimmable, WiFi
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 6 cm, WiFi 2,4 GHz and Bluetooth, compatible with Apple Siri shortcuts, Tuya, Lidl Home, Immax NEO PRO, control via app in both Czech and English, lifespan 25000 h, energy label F, 1 piece in package
18.90 €
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In stock 1 pcs
Order Code: IMMX_22_01
WOOX Smart Zigbee E27 LED bulb R9077 - LED Bulb
3.0 2×
WOOX Smart Zigbee E27 LED bulb R9077
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 10 W, 230 V, luminous flux 806 lm (2700 K), diameter of 6 cm, WiFi 2,4 GHz, compatible with Tuya, control via app in both Czech and English, lifespan 30000 h, 1 piece in package
17.90 €
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In stock 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: Woox22_9
Solight LED Spotlight, GU10, 5W, 4000K - LED Bulb
4.9 39×
Solight LED Spotlight, GU10, 5W, 4000K
LED Bulb - lamp cap GU10, power input 5 W, 230 V, neutral light (4000 K), diameter of 5 cm, energy label F, 1 piece in package
2.50 €
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In stock > 10 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: SD078d1
Philips LED Classic 7-60W, E27, 2700K, matt - LED Bulb
4.5 59×
Philips LED Classic 7-60W, E27, 2700K, matt
LED Bulb - lamp cap E27, power input 7 W, 230 V, luminous flux 806 lm, warm light (2700 K), diameter of 6 cm, lifespan 15000 h, energy label E, 1 piece in package
from  5.34 €
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In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: ESO105g2
Philips Hue White Ambiance 6W 810 E27 2pcs - LED Bulb
Philips Hue White Ambiance 6W 810 E27 2pcs
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, 2 in package
58.90 €
Buy
In stock 3 pcs
Order Code: PHLS25079
RETLUX RLT 204 LED tube 120cm 18W CW - LED Lamp
5.0 1×
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
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. 6.88 €
Discounted -41 % 8.09 € 13.90 €
Buy
In stock 3 pcs
Order Code: RTLX24074
Tesla Filament A class, E27, 4W, 840lm, 2700K warm white, 360deg, clear, 230V, 25 000h - LED Bulb
5 variants
4.7 26×
Tesla Filament A class, E27, 4W, 840lm, 2700K warm white, 360deg, clear, 230V, 25 000h
LED Bulb - lamp cap E27, power input 4 W, 230 V, luminous flux 840 lm, warm light (2700 K), diameter of 6 cm, lifespan 25000 h, energy label A, 1 piece in package
7.30 €
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In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: TES24006
Tesla Filament A class, E27, 2W, 420lm, 4000K daylight white, 360deg, clear, 230V, 25 000h - LED Bulb
5 variants
4.7 26×
Tesla Filament A class, E27, 2W, 420lm, 4000K daylight white, 360deg, clear, 230V, 25 000h
LED Bulb - lamp cap E27, power input 2 W, 230 V, luminous flux 470 lm, neutral light (4000 K), diameter of 10,5 cm, lifespan 25000 h, energy label A, 1 piece in package
Buy with code ALZADAYS20AT The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Erhalten Sie 20 % Rabatt mit dem Code ALZADAYS20AT. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt. 4.19 €
5.24 €
Buy
In stock > 10 pcs
Order Code: TES24005
EMOS Classic A80, E27, 20 W (150 W), 2452 lm, neutral white - LED Bulb
3 variants
4.8 50×
EMOS Classic A80, E27, 20 W (150 W), 2452 lm, neutral white
LED Bulb - lamp cap E27, power input 20 W, 230 V, luminous flux 2452 lm, neutral light (4000 K), diameter of 8 cm, lifespan 30000 h, energy label E, 1 piece in package
7.09 €
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In stock > 10 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: EMOS24104
EMOS Classic Mini Globe, E14, 6.5 W (60 W), 806 lm, warm white - LED Bulb
9 variants
4.8 96×
EMOS Classic Mini Globe, E14, 6.5 W (60 W), 806 lm, warm white
LED Bulb - lamp cap E14, power input 6,5 W, 230 V, luminous flux 806 lm, warm light (2700 K), diameter of 4,5 cm, lifespan 30000 h, energy label E, 1 piece in package
from  4.05 €
Buy
In stock 1 pcs
Order Code: EMOS24123
Tesla - LED bulb FILAMENT RETRO candle E14, 4.2W, 230V, 470lm, 25 000h, 2700K warm, 360deg, milky - LED Bulb
5.0 5×
Tesla - LED bulb FILAMENT RETRO candle E14, 4.2W, 230V, 470lm, 25 000h, 2700K warm, 360deg, milky
LED Bulb - lamp cap E14, power input 4,2 W, 230 V, luminous flux 470 lm, warm light (2700 K), diameter of 3,5 cm, lifespan 25000 h, energy label E, 1 piece in package
3.29 €
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In stock > 10 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: TslLight240010
Nedis LED bulb, G4, 1,5 W, 12 V, 120 lm, 2700 K - LED Bulb
4.4 5×
Nedis LED bulb, G4, 1,5 W, 12 V, 120 lm, 2700 K
LED Bulb - lamp cap G4, power input 1,5 W, 12 V, luminous flux 120 lm, lifespan 15000 h, energy label G, 1 piece in package
Discounted -46 % 3.59 € 6.70 €
Buy
In stock 3 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: Nedis24055
Nedis LED bulb, E14, R50, 2,8 W, 250 lm, 2700 K - LED Bulb
5.0 10×
Nedis LED bulb, E14, R50, 2,8 W, 250 lm, 2700 K
LED Bulb - lamp cap E14, power input 2,8 W, 230 V, luminous flux 250 lm, lifespan 15000 h, energy label F, 1 piece in package
6.10 €
Buy
In stock 4 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: Nedis24040
RETLUX RSH 104 A70, E27, 14 WATT, RGB, CCT - LED Bulb
3.8 30×
RETLUX RSH 104 A70, E27, 14 WATT, RGB, CCT
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 14 W, 230 V, luminous flux 1521 lm, adjustable light temperature (6500-2700 K), diameter of 7 cm, WiFi 2,4 GHz and Bluetooth, compatible with Apple Siri shortcuts, Google Home, Tuya, Lidl Home, Smartlife, Manufacturer app, control via app in both Czech and English, lifespan 15000 h, energy label F, 1 piece in package
Buy with code ALZADAYS10AT The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Erhalten Sie 10 % Rabatt mit dem Code ALZADAYS5AT. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt. 13.41 €
14.90 €
Buy
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: RTLX24_005
RETLUX RSH 101, GU10, 4.5 WATT, RGB, CCT - LED Bulb
4.2 6×
RETLUX RSH 101, GU10, 4.5 WATT, RGB, CCT
LED Bulb - smart, lamp cap GU10 - lamp cap GU10, power input 4,5 W, 230 V, luminous flux 326 lm, adjustable light temperature (6500-2700 K), diameter of 5 cm, WiFi 2,4 GHz and Bluetooth, compatible with Apple Siri shortcuts, Google Home, Tuya, Lidl Home, Smartlife, Manufacturer app, control via app in both Czech and English, lifespan 15000 h, energy label F, 1 piece in package
Buy with code ALZADAYS10AT The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Erhalten Sie 10 % Rabatt mit dem Code ALZADAYS5AT. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt. 11.61 €
12.90 €
Buy
In stock 1 pcs
Order Code: RTLX24_002
 

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 762 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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