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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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672 Results
Philips Smart LED WFB 60W A60 E27 - LED Bulb
Philips Smart LED WFB 60W A60 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 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
Buy with code ALZADAYS20DE 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 ALZADAYS20DE. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt. 11.12 €
13.90 €
Buy
In stock > 10 pcs
Order Code: PHLS26006
Philips Smart LED WFB 60W G95 E27 - LED Bulb
Philips Smart LED WFB 60W G95 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 9,5 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
Buy with code ALZADAYS20DE 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 ALZADAYS20DE. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt. 12.72 €
15.90 €
Buy
In stock > 10 pcs
Order Code: PHLS26008
Tesla MBULB, E27, 3,5W, 230V, 300lm, 3000K warm white, 100deg - LED Bulb
Tesla MBULB, E27, 3,5W, 230V, 300lm, 3000K warm white, 100deg
LED Bulb - lamp cap E27, power input 3,5 W, 230 V, luminous flux 300 lm, warm light, diameter of 1,8 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. 5.52 €
6.49 €
Buy
In stock > 5 pcs
Order Code: TslLight25027
TP-Link Tapo L430P, Smart E14, P45 Multicolour - LED Bulb
TP-Link Tapo L430P, Smart E14, P45 Multicolour
LED Bulb - smart, lamp cap E14 - lamp cap E14, power input 4,8 W, 230 V, luminous flux 470 lm, adjustable light temperature (2500-6500 K), diameter of 4,86 cm, WiFi 2,4 GHz, compatible with Samsung SmartThings, Manufacturer app, control via app in both Czech and English, lifespan 25000 h, energy label F, 1 piece in package
18.90 €
Buy
In stock > 10 pcs
Order Code: TP25156
Meross Smart Wi-Fi LED Bulb RGBWW - pack of 4 - LED Bulb
Meross Smart Wi-Fi LED Bulb RGBWW - pack of 4
LED Bulb - smart, lamp cap E27, B22 and E26 - lamp cap E27, B22 and E26, power input 9 W, luminous flux 810 lm, adjustable light temperature (2700-6500 K), WiFi 2,4 GHz, compatible with Manufacturer app, control via app in both Czech and English, energy label F, 4 in package
Buy with code ALZADAYS25DE The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Erhalten Sie 25 % Rabatt mit dem Code ALZADAYS25DE. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt. 42.68 €
56.90 €
Buy
In stock > 5 pcs
Order Code: Mer2514
Philips Hue White 14W 1600 E27 - LED Bulb
Philips Hue White 14W 1600 E27
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 14 W, 230 V, luminous flux 1600 lm, adjustable light temperature (2700-2700 K), Bluetooth, compatible with Apple Home, Google Home, Philips Hue, control via app in both Czech and English, lifespan 25000 h, energy label E, 1 piece in package
29.90 €
Buy
In stock > 5 pcs
Order Code: PHLS25078
Philips Hue White Ambiance 6W 810 E27 4pcs - LED Bulb
3 variants
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
104.90 €
Buy
In stock > 5 pcs
Order Code: PHLS25080
Philips Hue White and colour Ambiance 6W 810 E27 2pcs - LED Bulb
Philips Hue White and colour 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
103.90 €
Buy
In stock 1 pcs
Order Code: PHLS25084
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
57.90 €
Buy
In stock 2 pcs
Order Code: PHLS25079
Philips Hue White 10W 1100 E27 - LED Bulb
Philips Hue White 10W 1100 E27
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 10 W, 230 V, luminous flux 1055 lm, adjustable light temperature (2700-2700 K), Bluetooth, compatible with Apple Home, Google Home, Philips Hue, control via app in both Czech and English, lifespan 25000 h, energy label E, 1 piece in package
23.90 €
Buy
In stock > 5 pcs
Order Code: PHLS25076
RETLUX RHL 220 G9 40W Oven WW - Oven Bulb
RETLUX RHL 220 G9 40W Oven WW
Oven Bulb - energy label G, power input 40 W, 230 V, luminous flux 460 lm, warm light (3000 K), colour Rendering Index (CRI) 80 Ra, diameter 1,3 cm, lifetime 2000 h
4.39 €
Buy
In stock > 5 pcs
Order Code: RTLX25016
RETLUX RFL 603 Filament A60 E27 5.2W WW A - LED Bulb
RETLUX RFL 603 Filament A60 E27 5.2W WW A
LED Bulb , power input 5,2 W, 230 V, filament, luminous flux 1100 lm, warm light (3000 K), diameter of 6 cm, lifespan 25000 h, energy label A, 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. 4.41 €
5.19 €
Buy
In stock > 10 pcs
Order Code: RTLX25017
OSRAM 10X2, E14, 15W, 300 °C, clear - pack of 2 - Oven Bulb
OSRAM 10X2, E14, 15W, 300 °C, clear - pack of 2
Oven Bulb - energy label G, power input 15 W, 230 V, Filament, luminous flux 85 lm, warm light (2700 K), diameter 2,2 cm, lifetime 1500 h, 2 pieces in the package
5.99 €
Buy
In stock 3 pcs
Order Code: osra25108
OSRAM dimmable LED filament bulb E27 11 W VINTAGE GLOBE, warm white - LED Bulb
OSRAM dimmable LED filament bulb E27 11 W VINTAGE GLOBE, warm white
LED Bulb - lamp cap E27, power input 11 W, 230 V, luminous flux 806 lm, warm light (1800 K), diameter of 12,4 cm, lifespan 15000 h, energy label G, 1 piece in package
19.90 €
Buy
In stock 1 pcs
Order Code: osra25066
Imou by Dahua CL2B - LED Bulb
Imou by Dahua CL2B
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 9 W, 230 V, luminous flux 806 lm (2700 K), diameter of 6 cm, WiFi 2,4 GHz, compatible with Manufacturer app, control via app in Czech, lifespan 25000 h, energy label F, 1 piece in package
Discounted -12 % 8.19 € 9.39 €
Buy
In stock 4 pcs
Order Code: Imou25008
RETLUX RLL 468 G9 2W LED mini WW - LED Bulb
RETLUX RLL 468 G9 2W LED mini WW
LED Bulb - lamp cap G9, power input 2 W, 230 V, luminous flux 200 lm, warm light (3000 K), lifespan 15000 h, energy label F, 1 piece in package
4.29 €
Buy
In stock > 20 pcs
Order Code: RTLX24023
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)
Buy with code ALZADAYS50DE The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Erhalten Sie 50 % Rabatt mit dem Code ALZADAYS50DE. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt. 90.95 €
181.90 €
Buy
In stock 2 pcs
Order Code: WiZ23013
RETLUX RLL 457 R7S J78 4,5W LED COB WW - LED Bulb
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
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. 6.45 €
7.59 €
Buy
In stock > 10 pcs
Order Code: RTLX17115
Tesla - LED bulb GLOBE G125 VINTAGE, E27, 4,2W, 230V, 380lm, 2400K, 360deg, gold - LED Bulb
2 colors
Tesla - LED bulb GLOBE G125 VINTAGE, E27, 4,2W, 230V, 380lm, 2400K, 360deg, gold
LED Bulb - lamp cap E27, power input 4,2 W, 230 V, luminous flux 380 lm (2400 K), diameter of 9,5 cm, lifespan 25000 h, energy label E, 1 piece in package
10.90 €
Buy
In stock 1 pcs
Order Code: TslLigh22_76
Tesla - LED bulb CONE BULB VINTAGE, E27, 4,2W, 230V, 380lm, 25 000h, 2400K, 360deg, gold - LED Bulb
2 colors
Tesla - LED bulb CONE BULB VINTAGE, E27, 4,2W, 230V, 380lm, 25 000h, 2400K, 360deg, gold
LED Bulb , power input 4,2 W, 230 V, luminous flux 380 lm, warm light (2400 K), diameter of 6,4 cm, lifespan 25000 h, energy label F, 1 piece in package
Buy with code ALZADAYS25DE The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Erhalten Sie 25 % Rabatt mit dem Code ALZADAYS25DE. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt. 4.87 €
6.49 €
Buy
In stock 4 pcs
Order Code: TslLigh22_78
Tesla GLOBE G95 VINTAGE, E27, 4, 2W, 230V, 380lm, 2400K, 360deg, gold - LED Bulb
Tesla GLOBE G95 VINTAGE, E27, 4, 2W, 230V, 380lm, 2400K, 360deg, gold
LED Bulb , power input 4,2 W, 230 V, filament, luminous flux 380 lm (2400 K), diameter of 9,5 cm, lifespan 25000 h, energy label F, 1 piece in package
Buy with code ALZADAYS30DE The discount code gives the option of applying a discount on a given product when entering the code in the shopping cart. Erhalten Sie 30 % Rabatt mit dem Code ALZADAYS30DE. Das Angebot gilt bis zum 15. September 2025 oder solange der Vorrat reicht und ist nur für Endverbraucher bestimmt. 6.43 €
9.19 €
Buy
In stock 2 pcs
Order Code: TslLigh22_74
EMOS Classic MR16, GU10, 7 W (60 W), 800 lm, neutral white, dimmable - LED Bulb
2 variants
EMOS Classic MR16, GU10, 7 W (60 W), 800 lm, neutral white, dimmable
LED Bulb - lamp cap GU10, power input 7 W, 230 V, luminous flux 800 lm, neutral light (4000 K), diameter of 5 cm, lifespan 25000 h, energy label E, 1 piece in package
5.24 €
Buy
In stock 3 pcs
Order Code: EMOS25197
Philips Hue LG Triangle - LED Bulb
Philips Hue LG Triangle
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 6,8 W, 230 V, luminous flux 500 lm (2000 K), 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 €
Buy
In stock 2 pcs
Order Code: PHLS24_005
Philips Classic A60, E27, 60 W, cool white, 6 pcs. - LED Bulb
2 colors
Philips Classic A60, E27, 60 W, cool white, 6 pcs.
LED Bulb , power input 7 W, 230 V, luminous flux 850 lm, diameter of 6 cm, lifespan 15000 h, energy label E, 6 pc(s) in package - 2.65 €/ks
New arrival 15.90 €
Buy
In stock > 10 pcs
Order Code: PHLS26026
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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