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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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755 Results
EMOS Smart LED bulb GoSmart A60 E27 9 W (60 W) 806 lm RGB dimmable Zigbee - LED Bulb
4.4 13×
EMOS Smart LED bulb GoSmart A60 E27 9 W (60 W) 806 lm RGB dimmable Zigbee
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 9 W, 230 V, luminous flux 806 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
from  9.89 €
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In stock > 10 pcs
Order Code: HM521b9
AlzaPower LED 12-85W, E27, 4000K, set of 3 - LED Bulb
4.9 318×
AlzaPower LED 12-85W, E27, 4000K, set of 3
LED Bulb - lamp cap E27, power input 12 W, 230 V, luminous flux 1160 lm, neutral light (4000 K), diameter of 6 cm, lifespan 25000 h, energy label F, 3 in package - 2.20 €/ks
Great price 6.59 €
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In stock > 10 pcs
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Order Code: APWLED-0005
Philips Hue White and colour Ambiance 4.3W 350 GU10 3pcs - LED Bulb
2 variants
4.7 48×
Philips Hue White and colour Ambiance 4.3W 350 GU10 3pcs
LED Bulb - smart, lamp cap GU10 - lamp cap GU10, power input 4,3 W, 230 V, luminous flux 350 lm (2000 K), diameter of 5 cm, Bluetooth, compatible with Apple Home, Philips Hue, control via app in both Czech and English, lifespan 25000 h, energy label G, 3 in package
Great price 136.90 €
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In stock 2 pcs
Order Code: PHL21032
Solight LED Spotlight, GU10, 5W, 3000K - LED Bulb
4.7 74×
Solight LED Spotlight, GU10, 5W, 3000K
LED Bulb - lamp cap GU10, power input 5 W, 230 V, luminous flux 425 lm, warm light (3000 K), diameter of 5 cm, lifespan 35000 h, energy label F, 1 piece in package
2.09 €
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In stock > 20 pcs
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Order Code: SD078c2
Philips Hue White 9.5W 1100 E27 2pcs - LED Bulb
2 variants
4.8 180×
Philips Hue White 9.5W 1100 E27 2pcs
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 9,5 W, 230 V, luminous flux 1055 lm, warm light (2700 K), diameter of 6,1 cm, Bluetooth, compatible with Apple Home, Philips Hue, control via app in both Czech and English, lifespan 25000 h, energy label F, 2 in package
31.90 €
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In stock 3 pcs
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Order Code: PHL21008
Philips Hue White and colour Ambiance 6W 810 E27 4pcs + Hue GO v2 - Kit
3 variants
Philips Hue White and colour Ambiance 6W 810 E27 4pcs + Hue GO v2
Kit - LED bulb - smart, energy label D, power input 6W, 230 V, luminous flux 800 lm, (1000 K), colour Rendering Index (CRI) 80 Ra, Bluetooth, Compatible with Apple Home, Google Home, Philips Hue, applications in English and Czech, lifetime 25000 h, 4 pieces in a pack + Table lamp - LED, modern style, to the bedroom, into the living room, in the study, white colour, with a dimmer, on the bedside table, Light, chromaticity 6500 K, mobile app control, the possibility of adjusting the colour of the light, SMART, dimensions 7.9 × 15 × 15 cm (H×W×D)
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. 254.92 €
299.90 €
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In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: PHLS25085Abun
Philips Hue White Ambiance 6W 810 E27 4pcs + Hue GO v2 - Kit
3 variants
Philips Hue White Ambiance 6W 810 E27 4pcs + Hue GO v2
Kit - LED bulb - smart, energy label D, power input 6W, 230 V, luminous flux 800 lm, (1000 K), colour Rendering Index (CRI) 80 Ra, Bluetooth, Compatible with Apple Home, Google Home, Philips Hue, applications in English and Czech, lifetime 25000 h, 4 pieces in a pack + Table lamp - LED, modern style, to the bedroom, into the living room, in the study, white colour, with a dimmer, on the bedside table, Light, chromaticity 6500 K, mobile app control, the possibility of adjusting the colour of the light, SMART, dimensions 7.9 × 15 × 15 cm (H×W×D)
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. 168.22 €
197.90 €
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In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: PHLS25080Abun
Philips Hue White and colour Ambiance 8,1W 1100 E27 2pcs - LED Bulb
5.0 2×
Philips Hue White and colour Ambiance 8,1W 1100 E27 2pcs
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 8,1 W, 230 V, luminous flux 1100 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
115.90 €
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In stock 4 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: PHLS25087
AQARA LED Bulb T2 GU10, RGB CCT (LB-L03D) - LED Bulb
5.0 5×
AQARA LED Bulb T2 GU10, RGB CCT (LB-L03D)
LED Bulb - smart, lamp cap GU10 - lamp cap GU10, power input 4,9 W, 230 V, luminous flux 450 lm, adjustable light temperature (2000-9000 K), diameter of 5 cm, Bluetooth, compatible with Aqara Home, Manufacturer app, control via app in both Czech and English, lifespan 25000 h, energy label F, 1 piece in package
21.90 €
Buy
In stock > 10 pcs
Order Code: Aqara25008
EMOS Smart LED bulb GoSmart A65 E27 14 W (94 W) 1 400 lm RGB dimmable Wi-Fi - LED Bulb
3 variants
4.2 132×
EMOS Smart LED bulb GoSmart A65 E27 14 W (94 W) 1 400 lm RGB dimmable Wi-Fi
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 14 W, 230 V, luminous flux 1400 lm, adjustable light temperature (2700-6500 K), diameter of 6,5 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
9.19 €
Buy
In stock 1 pcs
Order Code: HM521b4
Yeelight Smart LED Bulb W4 Lite(Multicolour) - 1 pack - LED Bulb
2 sizes
3.9 52×
Yeelight Smart LED Bulb W4 Lite(Multicolour) - 1 pack
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 9 W, 230 V, luminous flux 806 lm, adjustable light temperature (2700-6500 K), diameter of 6 cm, WiFi 2,4 GHz, compatible with Apple Home, Google Home, Samsung SmartThings, control via app in English, lifespan 25000 h, energy label F, 1 piece in package
Great price 10.90 €
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In stock > 10 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: YeeLa56
Philips Hue White 5,7W E14 Drop - LED Bulb
2 variants
4.7 30×
Philips Hue White 5,7W E14 Drop
LED Bulb - smart, lamp cap E14 - lamp cap E14, power input 5,7 W, 230 V, luminous flux 470 lm, warm light (2700 K), diameter of 4,5 cm, Bluetooth, compatible with Apple Home, Philips Hue, control via app in both Czech and English, lifespan 25000 h, energy label G, 1 piece in package
23.90 €
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In stock 1 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: PHL20050
AlzaPower LED 15-100W, E27, 2700K, set of 2 - LED Bulb
4.8 77×
AlzaPower LED 15-100W, E27, 2700K, set of 2
LED Bulb - lamp cap E27, power input 15 W, 230 V, luminous flux 1521 lm, warm light (2700 K), diameter of 6,5 cm, lifespan 25000 h, energy label F, 2 in package - 3.10 €/ks
Great price 6.19 €
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In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: APWLED-0006
Philips Hue White and colour ambiance 4.3W GU10 set 2pcs - LED Bulb
2 variants
4.7 48×
Philips Hue White and colour ambiance 4.3W GU10 set 2pcs
LED Bulb - smart, lamp cap GU10 - lamp cap GU10, power input 4,3 W, 230 V, luminous flux 350 lm, adjustable light temperature (2000-6500 K), diameter of 5 cm, Bluetooth, compatible with Apple Home, Google Home, Philips Hue, control via app in both Czech and English, lifespan 25000 h, energy label G, 2 in package
94.90 €
Buy
In stock > 5 pcs
Order Code: PHL19063
Philips Hue LG G125 - LED Bulb
3.5 2×
Philips Hue LG G125
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 6,8 W, 230 V, luminous flux 500 lm, adjustable light temperature (2000-6500 K), diameter of 1,25 cm, 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
86.90 €
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In stock > 5 pcs
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Info
Order Code: PHLS24_004
Nedis LED bulb, GU5.3, MR16, 5,8 W, 12V, 450 lm, 2700 K - LED Bulb
3.0 5×
Nedis LED bulb, GU5.3, MR16, 5,8 W, 12V, 450 lm, 2700 K
LED Bulb - lamp cap GU5,3, power input 5,8 W, 12 V, luminous flux 450 lm, lifespan 15000 h, energy label G, 1 piece in package
Amazing Deal 4 €
Buy
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: Nedis24051
AlzaPower LED 18-120W, E27, 2700K, set of 2 - LED Bulb
4.7 111×
AlzaPower LED 18-120W, E27, 2700K, set of 2
LED Bulb - lamp cap E27, power input 18 W, 230 V, luminous flux 1820 lm, warm light (2700 K), diameter of 7 cm, lifespan 25000 h, energy label F, 2 in package - 3.70 €/ks
Great price 7.39 €
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In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: APWLED-0007
Philips Hue White Ambiance 12W 1600 E27 - LED Bulb
5.0 1×
Philips Hue White Ambiance 12W 1600 E27
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 12 W, 230 V, luminous flux 1521 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, 1 piece in package
57.90 €
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In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: PHLS25083
AlzaPower LED 8-55W, GU10, 4000K, set of 2 - LED Bulb
2 variants
4.3 208×
AlzaPower LED 8-55W, GU10, 4000K, set of 2
LED Bulb - lamp cap GU10, power input 8 W, 230 V, luminous flux 720 lm, neutral light (4000 K), diameter of 5 cm, lifespan 25000 h, energy label F, 2 in package - 2.05 €/ks
Great price 4.09 €
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In stock > 10 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: APWLED-0010a
WiZ colours 40W E14 C37 - LED Bulb
4.7 27×
WiZ colours 40W E14 C37
LED Bulb - smart, lamp cap E14 - lamp cap E14, power input 4,8 W, 230 V, luminous flux 470 lm, adjustable light temperature (2200-6500 K), diameter of 3,9 cm, WiFi 2,4 GHz, compatible with Samsung SmartThings, IFTTT, control via app in both Czech and English, lifespan 15000 h, energy label F, 1 piece in package
Great price 12.90 €
Buy
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: WiZ21009
TP-Link Tapo L630, smart, GU10, WiFI, colour - LED Bulb
4.8 54×
TP-Link Tapo L630, smart, GU10, WiFI, colour
LED Bulb - smart, lamp cap GU10 - lamp cap GU10, power input 3,7 W, 230 V, luminous flux 350 lm, adjustable light temperature (2200-6500 K), diameter of 5 cm, WiFi 2,4 GHz, compatible with Manufacturer app, control via app in both Czech and English, lifespan 15000 h, energy label E, 1 piece in package
10.90 €
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In stock > 10 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: TP22_32
Philips LED 4.7-50W, GU10 2700K, 3pcs - LED Bulb
4.8 100×
Philips LED 4.7-50W, GU10 2700K, 3pcs
LED Bulb - lamp cap GU10, power input 4,7 W, 230 V, luminous flux 345 lm, warm light (2700 K), diameter of 5 cm, lifespan 15000 h, energy label F, 3 in package - from 2.16 €/pcs
from  6.48 €
Buy
In stock > 10 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: PHL19088
Wi-Fi BLE 50W GU10 922-65 RGB 3CT/6 - LED Bulb
5.0 3×
Wi-Fi BLE 50W GU10 922-65 RGB 3CT/6
LED Bulb - smart, lamp cap GU10 - lamp cap GU10, power input 5 W, 230 V, luminous flux 400 lm, adjustable light temperature (2200-6500 K), diameter of 5 cm, WiFi 2,4 GHz and WiFi 5 GHz, control via app in both Czech and English, lifespan 15000 h, energy label F, 3 in package
32.90 €
Buy
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: WiZ23020
WiZ Tunable White 50W E27 G95 Vintage - LED Bulb
3.9 8×
WiZ Tunable White 50W E27 G95 Vintage
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 6,7 W, 230 V, luminous flux 640 lm, adjustable light temperature (2000-5000 K), WiFi 2,4 GHz, compatible with Samsung SmartThings, IFTTT, control via app in both Czech and English, lifespan 15000 h, energy label F, 1 piece in package
15.90 €
Buy
In stock > 10 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: WiZ21024

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 755 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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