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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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862 Results
4.4 16×
Tesla - LED bulb CANDLE candle, E14, 7W, 230V, 806lm, 25 000h, 4000K daylight white, 180st
LED Bulb - lamp cap E14, power input 7 W, 230 V, luminous flux 806 lm, neutral light (4000 K), diameter of 3,7 cm, lifespan 25000 h, energy label E, 1 piece in package
95,-
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In stock 2 pcs
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Order Code: TslLight24003
4.4
RETLUX RSH 100 C37, E14, 4.5 WATT, RGB, CCT
LED Bulb - smart, lamp cap E14 - lamp cap E14, power input 4,5 W, 230 V, luminous flux 385 lm, adjustable light temperature (6500-2700 K), diameter of 3,8 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
299,-
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In stock 5 pcs
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Order Code: RTLX24_001
4.8 112×
TESLA LED MINIGLOBE BULB, E14, 3W, 250lm, 4000K Daylight White
LED Bulb - lamp cap E14, power input 3 W, 230 V, luminous flux 250 lm, neutral light (4000 K), diameter of 6 cm, lifespan 25000 h, energy label G, 1 piece in package
59,-
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In stock > 10 pcs
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Order Code: TslLigh22_19
4.4
IMMAX NEO LED Smart E14 4.8W RGB+CCT, dimmable, C37, Zigbee
LED Bulb - smart, lamp cap E14 - lamp cap E14, power input 4,8 W, 230 V, luminous flux 470 lm, adjustable light temperature (2700-6500 K), diameter of 3,7 cm, WiFi 2,4 GHz, compatible with Apple Siri shortcuts, Tuya, Lidl Home, Smartlife, Nedis SmartLife, ETA SMART, Tesla Smart, Immax NEO PRO, control via app in both Czech and English, lifespan 416,67 h, energy label F, 1 piece in package
249,-
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In stock > 10 pcs
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Order Code: IMMX25103
4.6 55×
Tesla - LED bulb GX53, 6W, 230V, 480lm, 25 000h, 3000K warm white, 220st
LED Bulb - lamp cap GX53, power input 6 W, 230 V, luminous flux 480 lm, warm light, diameter of 7,4 cm, lifespan 25000 h, energy label F, 1 piece in package
149,-
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In stock > 10 pcs
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Order Code: TslLight25017
4.0
Philips LED 75W A60 E27 2700K CL UE SRT4
LED Bulb , power input 5,2 W, 230 V, luminous flux 1095 lm, warm light (2700 K), diameter of 6 cm, lifespan 50000 h, energy label A, 1 piece in package
199,-
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In stock > 10 pcs
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Order Code: PHLS25032
4.1
RETLUX RLL 644 G95 E27 bigG 15W WW
LED Bulb - lamp cap E27, power input 15 W, 230 V, luminous flux 2025 lm, warm light (3000 K), lifespan 25000 h, energy label D, 1 piece in package
169,-
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In stock > 5 pcs
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Info
Order Code: RTLX24073
4.8 17×
RETLUX RLL 639 G45 E27 miniG 6W CW D
LED Bulb - lamp cap E27, power input 6 W, 230 V, luminous flux 810 lm, neutral light (4000 K), lifespan 25000 h, energy label D, 1 piece in package
59,-
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In stock > 50 pcs
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Info
Order Code: RTLX24063
5.0 11×
RETLUX REL 34 LED C37 2x5W E14 WW
LED Bulb - lamp cap E14, power input 5 W, 230 V, luminous flux 430 lm, warm light, diameter of 3,7 cm, lifespan 25000 h, energy label F, 2 in package
99,-
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In stock > 20 pcs
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Order Code: RTLX17134
4.0 12×
Niceboy SmartBulb AMBIENT E14 set 2 pcs
LED Bulb - smart, lamp cap E14 - lamp cap E14, power input 5,5 W, 230 V, luminous flux 470 lm, adjustable light temperature (2700-6500 K), diameter of 3,6 cm, WiFi 2,4 GHz, compatible with Niceboy ION, control via app in Czech, lifespan 25000 h, energy label F, 2 in package
399,-
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In stock 4 pcs
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Order Code: NCB21_02
4.9 19×
Tesla Miniglobe FILAMENT RETRO E14, 4W, 230V, 470lm, 25 000h, 4000K daylight white, 360°, clear
LED Bulb , power input 4,2 W, 230 V, filament, luminous flux 470 lm, neutral light (4000 K), diameter of 4,6 cm, lifespan 25000 h, energy label E, 1 piece in package
Discounted -33 % 39,- 59,-
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In stock
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Info
Order Code: TslLight25010
3.0
SMD LED Capsule frosted 2W/G4/12V AC-DC/4000K/160Lm/360°
LED Bulb - lamp cap G4, power input 2 W, 12 V, luminous flux 160 lm, neutral light (4000 K), diameter of 1,4 cm, lifespan 30000 h, energy label F, 1 piece in package
109,-
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In stock > 20 pcs
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Order Code: DLPzark16
4.0
WiZ Tunable White 60W E27 G120 Filament
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 12,5 cm, WiFi 2,4 GHz, compatible with Samsung SmartThings, IFTTT, control via app in both Czech and English, lifespan 15000 h, energy label E, 1 piece in package
429,-
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In stock > 5 pcs
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Order Code: WiZ21019
5.0
Philips 40W P45 E14 2700K CL UE SRT4
LED Bulb - lamp cap E14, 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 3 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: PHLS25047
5.0
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
199,-
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In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: RTLX24074
4.8 17×
RETLUX RLL 640 G45 E27 miniG 6W DL D
LED Bulb - lamp cap E27, 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 > 50 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: RTLX24062
4.4 12×
Tesla - LED bulb FILAMENT BULB E27, 9W, 230V, 1055lm, 4000K daylight white, 360deg, milky
LED Bulb - lamp cap E27, power input 9 W, 230 V, luminous flux 1055 lm, neutral light (4000 K), diameter of 6 cm, lifespan 25000 h, energy label E, 1 piece in package
89,-
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In stock 2 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: TslLight24002
5.0
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
79,-
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In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: TslLight240010
4.5
Philips LED 4-60W, E27, 4000K, milky, A
LED Bulb , power input 4 W, 220 V, luminous flux 840 lm, neutral light (4000 K), diameter of 6 cm, lifespan 50000 h, energy label A, 1 piece in package
429,-
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In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: PHL22055
4.0
Rabalux LED bulb E27 A60 11W 1050lm
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 5 GHz, compatible with Tuya, control via app in Czech, lifespan 25000 h, energy label F, 1 piece in package
329,-
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In stock > 10 pcs
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Info
Order Code: RBLUX055
4.9 31×
RETLUX RLL 653 R50 E14 Spot 8W DL D
LED Bulb - lamp cap E14, power input 8 W, 230 V, luminous flux 1080 lm, cool light (6500 K), lifespan 25000 h, energy label D, 1 piece in package
89,-
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In stock > 20 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: RTLX24068
4.9 33×
RETLUX RLL 632 G45 E14 miniG 6W WW D
LED Bulb - lamp cap E14, power input 6 W, 230 V, luminous flux 810 lm, warm light (3000 K), lifespan 25000 h, energy label D, 1 piece in package
79,-
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In stock > 20 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: RTLX24054
4.9
RETLUX RLL 665 R63 E27 Spot 8W WW D
LED Bulb - lamp cap E27, power input 8 W, 230 V, luminous flux 1080 lm, warm light (3000 K), lifespan 25000 h, energy label D, 1 piece in package
89,-
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In stock > 20 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: RTLX24069
4.3
RETLUX RLL 450 A60 E27 bulb 3DIMM 10W CW
LED Bulb , power input 10 W, 230 V, luminous flux 940 lm, neutral light (4000 K), diameter of 6 cm, lifespan 25000 h, energy label F, 1 piece in package
119,-
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In stock > 20 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: RTLX17158
In the category Light Bulbs & Fluorescent Lights on Alza.cz, we currently have a total of 923 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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