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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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861 Results
3.4
Xtend Home XTH-LED-E2711T
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 11 W, 240 V, luminous flux 1050 lm, WiFi 2,4 GHz, compatible with Tuya, control via app in Czech, lifespan 25000 h, energy label F, 1 piece in package
189,-
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In stock > 10 pcs
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Order Code: Xtend25017
4.8
Tesla LED bulb FILAMENT RETRO, E27, 4,2W, 230V, 470lm, 4000K daylight white
LED Bulb - lamp cap E27, power input 4,2 W, 230 V, luminous flux 470 lm, neutral light (4000 K), diameter of 6,1 cm, lifespan 25000 h, energy label E, 1 piece in package
89,-
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In stock 2 pcs
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Order Code: TslLight23_021
4.5 48×
RETLUX RLL 431 C37 E14 candle
LED Bulb - lamp cap E14, power input 8 W, 230 V, luminous flux 720 lm, cool light (6500 K), diameter of 3,7 cm, lifespan 25000 h, energy label F, 1 piece in package
89,-
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In stock > 5 pcs
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Order Code: RTLX22_060
4.9 64×
EMOS Filament Mini Globe E14 1,8 W (25 W) 250 lm, warm white
LED Bulb - lamp cap E14, power input 1,8 W, 230 V, luminous flux 250 lm, warm light (2700 K), diameter of 4,5 cm, lifespan 25000 h, energy label D, 1 piece in package
65,-
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In stock > 20 pcs
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Order Code: EMOS24191
4.9 19×
Tesla - LED bulb miniglobe FILAMENT RETRO E14, 6W, 230V,806lm,25 000h, 4000K daylight white, 360deg,
LED Bulb - lamp cap E14, power input 6 W, 230 V, luminous flux 806 lm, neutral light (4000 K), diameter of 4,5 cm, lifespan 25000 h, energy label E, 1 piece in package
79,-
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In stock > 5 pcs
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Order Code: TslLigh22_68
5.0
Philips LED 40W A60 E27 4000K FR UE SRT4
LED Bulb , power input 2,3 W, 230 V, luminous flux 485 lm, neutral light (4000 K), diameter of 6 cm, lifespan 50000 h, energy label A, 1 piece in package
179,-
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In stock 3 pcs
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Order Code: PHLS25024
3.0
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
59,-
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In stock > 10 pcs
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Info
Order Code: RTLX24023
4.7
RETLUX RFL 401 Filament G45 E14 miniG 5W WW
LED Bulb - lamp cap E14, power input 5 W, 230 V, filament, luminous flux 550 lm, warm light (3000 K), diameter of 4,5 cm, lifespan 15000 h, energy label E, 1 piece in package
109,-
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In stock > 20 pcs
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Info
Order Code: RTLX22_042
4.4
Xtend Home XTH-LED-E2714T
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 14 W, 240 V, luminous flux 1400 lm, WiFi 2,4 GHz, compatible with Tuya, control via app in Czech, lifespan 25000 h, energy label F, 1 piece in package
269,-
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In stock > 10 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: Xtend25018
4.4
Philips LED 100WA60 E27 2700K CL UE SRT4
LED Bulb , power input 7,3 W, 230 V, luminous flux 1535 lm, warm light (2700 K), lifespan 50000 h, 1 piece in package
289,-
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In stock 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: PHLS25035
5.0
McLED LED T8 18 W, 4000 K, CRI80, 2700 lm, 150 lm/W, 1500 mm
LED Lamp - G13 socket, energy label D, power input 18 W, 230 V, luminous flux 2700 lm, neutral light (4000 K), colour Rendering Index (CRI) 80 Ra, diameter 2,9 cm, lifetime 50000 h
212,-
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In stock > 10 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: MCLled009
4.9 26×
EMOS Classic candle E27 4,2 W (40 W) 470 lm, warm white
LED Bulb - lamp cap E27, power input 4,2 W, 230 V, luminous flux 470 lm, warm light (2700 K), diameter of 3,5 cm, lifespan 30000 h, energy label E, 1 piece in package
55,-
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In stock > 50 pcs
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Info
Order Code: EMOS24186
5.0
Philips Hue LED white Ambiance Bluetooth bulb
LED Bulb - smart, lamp cap E14 - lamp cap E14, power input 5,1 W, 230 V, luminous flux 470 lm (2200 K), diameter of 19 cm, Bluetooth, compatible with Apple Home, Google Home, Samsung SmartThings, Philips Hue, energy label F, 1 piece in package
973,-
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In stock 1 pcs
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Info
Order Code: PHIleZA002
4.3 10×
RETLUX RLL 607 A60 E27 bulb 12W CW D
LED Bulb - lamp cap E27, power input 12 W, 230 V, luminous flux 1620 lm, neutral light (4000 K), lifespan 25000 h, energy label D, 1 piece in package
119,-
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In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: RTLX24033
4.7
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
64,-
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In stock > 20 pcs
Order by midnight, get it at the AlzaBox in the morning.
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Order Code: Nedis24043
4.0
RETLUX RFL 400 Filament C35 E14 candle 5W WW
LED Bulb - lamp cap E14, power input 5 W, 230 V, luminous flux 550 lm, warm light (3000 K), diameter of 3,5 cm, lifespan 15000 h, energy label E, 1 piece in package
109,-
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In stock > 20 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: RTLX22_041
5.0
OSRAM SPC. T26/57, 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 2,6 cm, lifetime 1000 h, 2 pieces in the package
99,-
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In stock > 10 pcs
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Info
Order Code: osra25113
5.0
Philips 40W P45 E27 2700K FR UE SRT4
LED Bulb - lamp cap E27, power input 2,3 W, 230 V, luminous flux 485 lm, warm light (2700 K), lifespan 50000 h, energy label A, 1 piece in package
199,-
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In stock 4 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: PHLS25051
4.4 20×
RETLUX RLL 622 R50 E14 Spot 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
79,-
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In stock > 10 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: RTLX24047
5.0
McLED T8 LED tube 9 W, 4000 K, CRI80, 1125 lm 125 lm/W, 600 mm
LED Lamp - G13 socket, energy label E, power consumption 9 W, 230 V, luminous flux 1125 lm, neutral light (4000 K), colour Rendering Index (CRI) 80 Ra, diameter 2,9 cm, service life 40000 h
154,-
Buy
In stock > 10 pcs at the supplier's
Order Code: MCLled004
4.8 101×
EMOS Classic Mini Globe, E14, 4.2 W (40 W), 470 lm, neutral white
LED Bulb - lamp cap E14, power input 4,2 W, 230 V, luminous flux 470 lm, neutral light (4000 K), diameter of 4,5 cm, lifespan 30000 h, energy label E, 1 piece in package
from  50,-
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In stock > 10 pcs
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Info
Order Code: EMOS24095
5.0
WiZ Tunable White 40W E14 C35 Filament
LED Bulb - smart, lamp cap E14 - lamp cap E14, power input 4,9 W, 230 V, luminous flux 470 lm, adjustable light temperature (2700-6500 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
354,-
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In stock > 10 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: WiZ21017
4.3 10×
RETLUX RLL 608 A60 E27 bulb 12W DL D
LED Bulb - lamp cap E27, power input 12 W, 230 V, luminous flux 1620 lm, cool light (6500 K), lifespan 25000 h, energy label D, 1 piece in package
119,-
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In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: RTLX24038
4.9 33×
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
59,-
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In stock > 10 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: RTLX24059
In the category Light Bulbs & Fluorescent Lights on Alza.cz, we currently have a total of 922 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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