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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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752 Results
MOES Smart Zigbee Bulb, GU-10, RGB, 5W - LED Bulb
2 sizes
4.8 8×
MOES Smart Zigbee Bulb, GU-10, RGB, 5W
LED Bulb - smart, lamp cap GU10 - lamp cap GU10, power input 4,7 W, 230 V, luminous flux 345 lm, adjustable light temperature (2200-6500 K), diameter of 5 cm, WiFi 2,4 GHz, compatible with Tuya, lifespan 15000 h, energy label F, 1 piece in package
13.90 €
Buy
In stock 1 pcs
Order Code: Moes22_19
RETLUX RLL 446 T120 E27 bulb 40W WW - LED Bulb
4.7 24×
RETLUX RLL 446 T120 E27 bulb 40W WW
LED Bulb - lamp cap E27, power input 40 W, 230 V, luminous flux 4300 lm, diameter of 12 cm, lifespan 25000 h, energy label F, 1 piece in package
Buy with code ALZADAYS15DE 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 ALZADAYS15DE. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt. 10.12 €
Discounted -7 % 11.90 € 12.90 €
Buy
In stock > 5 pcs
Order Code: RTLX17124
MOES Smart Wi-Fi Bulb, GU-10, RGB, 5W - LED Bulb
2 sizes
4.8 8×
MOES Smart Wi-Fi Bulb, GU-10, RGB, 5W
LED Bulb - smart, lamp cap GU10 - lamp cap GU10, power input 4,7 W, 230 V, luminous flux 400 lm, adjustable light temperature (2200-6500 K), diameter of 5 cm, WiFi 5 GHz, compatible with Tuya, lifespan 15000 h, energy label F, 1 piece in package
10.90 €
Buy
In stock > 10 pcs
Order Code: Moes22_18
Philips Hue White Filament 7W E27 ST64 - LED Bulb
4.9 13×
Philips Hue White Filament 7W E27 ST64
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 7 W, 230 V, luminous flux 550 lm, warm light (2100 K), Bluetooth, compatible with Apple Home, Philips Hue, control via app in both Czech and English, lifespan 15000 h, energy label G, 1 piece in package
30.90 €
Buy
In stock 3 pcs
Order Code: PHL19026
Philips Hue White 5,5W GU10 set 2pcs - LED Bulb
4.9 16×
Philips Hue White 5,5W GU10 set 2pcs
LED Bulb - smart, lamp cap GU10 - lamp cap GU10, power input 5,2 W, 230 V, luminous flux 400 lm, warm light (2700 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 E, 2 in package
from  32.92 €
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In stock 2 pcs
Order Code: PHL18146
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
14.90 €
Buy
In stock > 10 pcs
Order Code: WiZ21009
Yeelight GU10 Smart Bulb W1 (Dimmable) - LED Bulb
4.4 27×
Yeelight GU10 Smart Bulb W1 (Dimmable)
LED Bulb - smart, lamp cap GU10 - lamp cap GU10, power input 4,8 W, 230 V, luminous flux 350 lm, warm light, diameter of 5 cm, WiFi 2,4 GHz, compatible with Samsung SmartThings, control via app in both Czech and English, energy label G, 1 piece in package
Buy with code ALZADAYS15DE 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 ALZADAYS15DE. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt. 10.97 €
12.90 €
Buy
In stock > 10 pcs
Order Code: YeeLa48
Philips LED 12.5-100W, E27 4000K, 2pcs - LED Bulb
2 variants
4.8 153×
Philips LED 12.5-100W, E27 4000K, 2pcs
LED Bulb - lamp cap E27, power input 12,5 W, 230 V, luminous flux 1521 lm, neutral light (4000 K), diameter of 6 cm, lifespan 15000 h, energy label E, 2 in package - from 5.06 €/pcs
from  10.11 €
Buy
In stock > 10 pcs
Order Code: PHL19087
EMOS Smart LED bulb GoSmart MR16 GU10 4,8 W (35 W) 400 lm RGB dimmable Zigbee - LED Bulb
4.0 17×
EMOS Smart LED bulb GoSmart MR16 GU10 4,8 W (35 W) 400 lm RGB dimmable Zigbee
LED Bulb - smart, lamp cap GU10 - lamp cap GU10, power input 4,8 W, 230 V, luminous flux 400 lm, adjustable light temperature (2700-6500 K), diameter of 5 cm, WiFi 2,4 GHz, compatible with Tuya, EMOS GoSmart, control via app in both Czech and English, lifespan 20000 h, energy label G, 1 piece in package
from  9.81 €
Buy
In stock > 10 pcs
Order Code: HM521b7
TP-Link Tapo L530E, Smart WiFi bulb colour - LED Bulb
4.6 251×
TP-Link Tapo L530E, Smart WiFi bulb colour
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 8,7 W, 230 V, luminous flux 806 lm, diameter of 6 cm, WiFi 2,4 GHz, compatible with Manufacturer app, control via app in both Czech and English, lifespan 15000 h, energy label F, 1 piece in package
11.90 €
Buy
In stock > 10 pcs
Order Code: TpLNk2008
Philips Hue White 9.5W 1100 E27 small starter kit - LED Bulb
2 colors
4.9 22×
Philips Hue White 9.5W 1100 E27 small starter kit
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
Amazing Deal 66.90 €
Buy
In stock 3 pcs
Order Code: PHL21009
Philips LED 10-75W, E27 4000K, 2pcs - LED Bulb
2 variants
4.8 153×
Philips LED 10-75W, E27 4000K, 2pcs
LED Bulb - lamp cap E27, power input 10 W, 230 V, luminous flux 1055 lm, neutral light (4000 K), diameter of 6 cm, lifespan 15000 h, energy label F, 2 in package - 5.45 €/pcs
10.90 €
Buy
In stock > 5 pcs
Order Code: PHL19085
Philips Hue White and colour Ambiance 11,8W 1600 E27 - LED Bulb
5.0 1×
Philips Hue White and colour Ambiance 11,8W 1600 E27
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 11,8 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
82.90 €
Buy
In stock > 5 pcs
Order Code: PHLS25088
EMOS Smart LED bulb GoSmart candle E14 4,8 W (40 W) 470lm RGB dimmable Zigbee - LED Bulb
3.5 11×
EMOS Smart LED bulb GoSmart candle E14 4,8 W (40 W) 470lm RGB dimmable Zigbee
LED Bulb - smart, lamp cap E14 - lamp cap E14, power input 5 W, 230 V, luminous flux 470 lm, adjustable light temperature (2700-6500 K), diameter of 3,7 cm, WiFi 2,4 GHz, compatible with Tuya, EMOS GoSmart, control via app in both Czech and English, lifespan 20000 h, energy label F, 1 piece in package
from  9.81 €
Buy
In stock > 10 pcs
Order Code: HM521b8
Philips LED Classic Filament 11-100W, E27, clear, 4000K - LED Bulb
4.6 59×
Philips LED Classic Filament 11-100W, E27, clear, 4000K
LED Bulb - lamp cap E27, power input 10,5 W, 230 V, luminous flux 1521 lm, neutral light (4000 K), diameter of 6 cm, lifespan 15000 h, energy label D, 1 piece in package
from  5.66 €
Buy
In stock > 10 pcs
Order Code: ESO1A011
Govee Smart RGBWW 12 W-85 W, 1200 lm, E27, Long Life Matter - LED Bulb
4.6 53×
Govee Smart RGBWW 12 W-85 W, 1200 lm, E27, Long Life Matter
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 12 W, 230 V, luminous flux 1200 lm, adjustable light temperature (2700-6500 K), diameter of 6 cm, WiFi 2,4 GHz, WiFi 5 GHz and Bluetooth, compatible with Apple Siri shortcuts, Google Home, GOVEE Home, control via app in English, lifespan 25000 h, energy label F, 1 piece in package
Buy with code ALZADAYS10DE 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 ALZADAYS10DE. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt. 17.01 €
18.90 €
Buy
In stock > 10 pcs
Order Code: Govee24017
EMOS Smart LED bulb GoSmart MR16 GU10 4,8 W (35 W) 400 lm RGB dimmable Wi-Fi - LED Bulb
4.0 27×
EMOS Smart LED bulb GoSmart MR16 GU10 4,8 W (35 W) 400 lm RGB dimmable Wi-Fi
LED Bulb - smart, lamp cap GU10 - lamp cap GU10, power input 4,8 W, 230 V, luminous flux 400 lm, adjustable light temperature (2700-6500 K), diameter of 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 G, 1 piece in package
8.19 €
Buy
In stock 2 pcs
Order Code: HM521b5
EMOS Led bulb Classic JC 4W G9 neutral white, 2 pcs - LED Bulb
7 variants
4.7 237×
EMOS Led bulb Classic JC 4W G9 neutral white, 2 pcs
LED Bulb - lamp cap G9, power input 4 W, 230 V, luminous flux 470 lm, neutral light (4000 K), diameter of 1,9 cm, lifespan 30000 h, energy label E, 2 in package - from 3.56 €/ks
Great price from  7.11 €
Buy
In stock > 10 pcs
Order Code: EMS17119
Philips Hue White Filament 7,2W E27 G93 - LED Bulb
4.7 22×
Philips Hue White Filament 7,2W E27 G93
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 7,2 W, 230 V, luminous flux 580 lm (2100 K), diameter of 9,5 cm, Bluetooth, compatible with Apple Home, Philips Hue, control via app in both Czech and English, lifespan 15000 h, energy label G, 1 piece in package
35.90 €
Buy
In stock 3 pcs
Order Code: PHL19025
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
Great price 9.59 €
Buy
In stock > 10 pcs
Order Code: Moes2404
Philips Hue White 5,7W E14 Drop set 2pcs - LED Bulb
2 variants
4.7 30×
Philips Hue White 5,7W E14 Drop set 2pcs
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, 2 in package
32.90 €
Buy
In stock 3 pcs
Order Code: PHL20051
TP-Link Tapo L510E, Smart WiFi bulb dimmable (pack of 2) - LED Bulb
4.8 58×
TP-Link Tapo L510E, Smart WiFi bulb dimmable (pack of 2)
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 8,7 W, 230 V, luminous flux 806 lm, warm light, diameter of 6 cm, WiFi 2,4 GHz, compatible with Manufacturer app, control via app in both Czech and English, lifespan 15000 h, energy label F, 2 in package
16.90 €
Buy
In stock > 10 pcs
Order Code: TpLNk21t2
Philips LED 9-60W, E27 4000K, 3pcs - LED Bulb
2 variants
4.8 207×
Philips LED 9-60W, E27 4000K, 3pcs
LED Bulb - lamp cap E27, power input 8 W, 230 V, luminous flux 806 lm, neutral light (4000 K), diameter of 6 cm, lifespan 15000 h, energy label F, 3 in package - from 1.87 €/pcs
from  5.60 €
Buy
In stock > 10 pcs
Order Code: PHL19081
IMMAX NEO LITE Smart bulb LED E27 11W colour and white, dimmable, WiFi - LED Bulb
4.4 136×
IMMAX NEO LITE Smart bulb LED E27 11W colour and white, dimmable, WiFi
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 11 W, 230 V, luminous flux 1055 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
8.29 €
Buy
In stock > 10 pcs
Order Code: IMMX_21_23

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.de, we currently have a total of 751 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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