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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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Alza Days Light Bulbs & Fluorescent Lights Sorted by Socket by Socket LED Bulbs LED bulbs Fluorescent Tube Lamps Fluorescent Tubes Efficient Lamps Efficient Smart Light Bulbs Light Sources Vintage & Retro Light Bulbs Retro Spotlight Bulbs Spotlight Light Bulb Value Packs Value Packs Oven Light Bulbs Oven AlzaPower Light Bulbs & Fluorescent Lights AlzaPower Jak vybrat žárovku
 
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RETLUX RLL 420 GU5.3 spot 7W 12V WW - LED Bulb
4.5 25×
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RETLUX RLL 420 GU5.3 spot 7W 12V WW
LED Bulb - lamp cap GU5,3, power input 7 W, 12 V, luminous flux 660 lm, warm light, diameter of 5 cm, lifespan 25000 h, energy label F, 1 piece in package
5.29 €
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WiZ colours 75W E27 G95 - LED Bulb
4.9 13×
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WiZ colours 75W E27 G95
LED Bulb - smart, lamp cap E27 - lamp cap E27, power input 11 W, 230 V, luminous flux 1055 lm, adjustable light temperature (2200-6500 K), WiFi 2,4 GHz, compatible with Samsung SmartThings, IFTTT, control via app in both Czech and English, lifespan 25000 h, energy label F, 1 piece in package
Amazing Deal 12.90 €
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Order Code: WiZ21014
Niceboy SmartBulb AMBIENT E14 - LED Bulb
2 sizes
4.0 12×
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Niceboy SmartBulb AMBIENT E14
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, 1 piece in package
Discounted -25 % 6.96 € 9.29 €
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Order Code: NCB21_01
OSRAM 20X1, G4, 10W, 64418 OVEN, 450 °C, clear - Oven Bulb
5.0 5×
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OSRAM 20X1, G4, 10W, 64418 OVEN, 450 °C, clear
Oven Bulb - energy label G, power input 10 W, 12 V, luminous flux 130 lm, warm light (2800 K), diameter 0,8 cm, lifetime 2000 h
Amazing Deal 4.09 €
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Order Code: osra25105
Govee Smart RGBWW 4,8W-50W 400lm GU10 Long Life 2pcs Matter - LED Bulb
4.0 14×
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Govee Smart RGBWW 4,8W-50W 400lm GU10 Long Life 2pcs Matter
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 and Bluetooth, compatible with Apple Siri shortcuts, Google Home, GOVEE Home, control via app in English, lifespan 25000 h, energy label F, 2 in package
17.90 €
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EMOS Classic candle E14 4,2 W (40 W) 470 lm, neutral white, 3 pcs - LED Bulb
5 variants
4.9 115×
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EMOS Classic candle E14 4,2 W (40 W) 470 lm, neutral white, 3 pcs
LED Bulb - lamp cap E14, power input 4,2 W, 230 V, luminous flux 470 lm, neutral light (4000 K), diameter of 3,5 cm, lifespan 30000 h, energy label E, 3 in package
5.39 €
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Order Code: EMOS24200
EMOS Classic A60, E27, 7 W (60 W), 806 lm, cool white - LED Bulb
10+ variants
4.8 189×
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EMOS Classic A60, E27, 7 W (60 W), 806 lm, cool white
LED Bulb - lamp cap E27, power input 7 W, 230 V, luminous flux 806 lm, cool light (6500 K), diameter of 6 cm, lifespan 30000 h, energy label E, 1 piece in package
10.90 €
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Order Code: EMOS24089
RETLUX RLL 447 GU10 bulb 3step DIMM 6W WW - LED Bulb
2 variants
4.2 17×
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RETLUX RLL 447 GU10 bulb 3step DIMM 6W WW
LED Bulb , power input 6 W, 230 V, luminous flux 510 lm, warm light (3000 K), diameter of 5 cm, lifespan 25000 h, energy label F, 1 piece in package
4.39 €
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Order Code: RTLX17156
RETLUX RFL 401 Filament G45 E14 miniG 5W WW - LED Bulb
4.7 3×
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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
4.90 €
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Order Code: RTLX22_042
IMMAX NEO Smart LED bulb E27 11W RGB+CCT colour and white, dimmable, Zigbee 3.0 - LED Bulb
3.7 56×
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IMMAX NEO Smart LED bulb E27 11W RGB+CCT colour and white, dimmable, Zigbee 3.0
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, compatible with Apple Siri shortcuts, Tuya, Lidl Home, Philips Hue, Immax NEO PRO, control via app in both Czech and English, lifespan 25000 h, energy label F, 1 piece in package
17.90 €
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Order Code: IMXX21379
Philips LED 4-60W, E27, 4000K, A - LED Bulb
4.6 22×
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Philips LED 4-60W, E27, 4000K, A
LED Bulb , power input 4 W, luminous flux 840 lm, neutral light (4000 K), lifespan 15000 h, energy label A, 1 piece in package
Discounted -53 % 5.99 € 12.90 €
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Order Code: PHL22006
EMOS LED Bulb Classic JC, A++, 4.5W, E14, Neutral White - LED Bulb
2 variants
4.7 83×
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EMOS LED Bulb Classic JC, A++, 4.5W, E14, Neutral White
LED Bulb - lamp cap E14, power input 4,5 W, 230 V, luminous flux 465 lm, neutral light (4100 K), diameter of 2 cm, lifespan 30000 h, energy label F, 1 piece in package
4.79 €
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Order Code: EMS19002
Philips LED Classic 7-60W, E27, 2700K, matt - LED Bulb
4.5 63×
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Philips LED Classic 7-60W, E27, 2700K, matt
LED Bulb , power input 7 W, 230 V, luminous flux 806 lm, warm light (2700 K), diameter of 6 cm, lifespan 15000 h, energy label E, 1 piece in package
from  5.25 €
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Order Code: ESO105g2
Tesla Filament A class, E27, 4W, 840lm, 4000K daylight white, 360deg, clear, 230V, 25 000h - LED Bulb
5 variants
4.7 28×
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Tesla Filament A class, E27, 4W, 840lm, 4000K daylight white, 360deg, clear, 230V, 25 000h
LED Bulb - lamp cap E27, power input 4 W, 230 V, luminous flux 840 lm, neutral light (4000 K), diameter of 10,5 cm, lifespan 25000 h, energy label A, 1 piece in package
Discounted -22 % 5.69 € 7.30 €
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Order Code: TES24004
Tesla Filament A class, E27, 2W, 420lm, 4000K daylight white, 360deg, clear, 230V, 25 000h - LED Bulb
5 variants
4.7 28×
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Tesla Filament A class, E27, 2W, 420lm, 4000K daylight white, 360deg, clear, 230V, 25 000h
LED Bulb - lamp cap E27, power input 2 W, 230 V, luminous flux 470 lm, neutral light (4000 K), diameter of 10,5 cm, lifespan 25000 h, energy label A, 1 piece in package
Discounted -23 % 4.69 € 6.10 €
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Order Code: TES24005
EMOS Classic MR16, GU10, 3 W (32 W), 345 lm, warm white, 3 pcs - LED Bulb
10+ variants
4.8 232×
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EMOS Classic MR16, GU10, 3 W (32 W), 345 lm, warm white, 3 pcs
LED Bulb - lamp cap GU10, power input 3 W, 230 V, luminous flux 345 lm, warm light (3000 K), diameter of 5 cm, lifespan 30000 h, energy label E, 3 in package
Amazing Deal from  4.85 €
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Order Code: EMOS24116
Tesla - LED bulb BULB E27, 9W, 230V, 1055lm, 25 000h, 4000K daylight white, 220st 3pcs in pack - LED Bulb
10+ variants
4.8 220×
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Tesla - LED bulb BULB E27, 9W, 230V, 1055lm, 25 000h, 4000K daylight white, 220st 3pcs in pack
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, 3 in package
7.79 €
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In stock 3 pcs
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Order Code: TslLight24_008
Tesla - LED bulb BULB E27, 9W, 230V, 1055lm, 25 000h, 6500K cold white, 220st 3pcs in pack - LED Bulb
10+ variants
4.8 220×
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Tesla - LED bulb BULB E27, 9W, 230V, 1055lm, 25 000h, 6500K cold white, 220st 3pcs in pack
LED Bulb - lamp cap E27, power input 9 W, 230 V, luminous flux 1055 lm, cool light (6500 K), diameter of 6 cm, lifespan 25000 h, energy label E, 3 in package
Discounted -17 % 6.70 € 8.09 €
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Order Code: TslLight24_007
Tesla LED bulb GU5,3 MR16, 6W, 12V, 540lm, 4000K daylight white - LED Bulb
2 variants
4.7 88×
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Tesla LED bulb GU5,3 MR16, 6W, 12V, 540lm, 4000K daylight white
LED Bulb - lamp cap GU5,3, power input 6 W, 12 V, luminous flux 540 lm, neutral light (4000 K), diameter of 5 cm, lifespan 25000 h, energy label G, 1 piece in package
4.30 €
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Order Code: TslLight23_022
RETLUX RLL 448 GU10 bulb 3step DIMM 6W CW - LED Bulb
2 variants
4.2 17×
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RETLUX RLL 448 GU10 bulb 3step DIMM 6W CW
LED Bulb , power input 6 W, 230 V, luminous flux 510 lm, neutral light (4000 K), diameter of 5 cm, lifespan 25000 h, energy label F, 1 piece in package
4.09 €
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In stock 4 pcs
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Order Code: RTLX17157
RETLUX RLL 450 A60 E27 bulb 3DIMM 10W CW - LED Bulb
4.3 9×
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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
Discounted -30 % 3.49 € 4.99 €
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In stock
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Order Code: RTLX17158
RETLUX RLL 431 C37 E14 candle - LED Bulb
2 variants
4.5 48×
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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
3.59 €
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In stock > 5 pcs
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Order Code: RTLX22_060
RETLUX REL 38 LED R50 2x6W E14 W - LED Bulb
2 variants
4.8 64×
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RETLUX REL 38 LED R50 2x6W E14 W
LED Bulb - lamp cap E14, power input 6 W, 230 V, luminous flux 510 lm, warm light (3000 K), diameter of 5 cm, lifespan 25000 h, energy label F, 2 in package
4.49 €
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In stock 2 pcs
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Order Code: RTLX22_040
Tesla - LED bulb FILAMENT RETRO BULB, E27, 4,2W, 230V, 470lm, 25 000h, 4000K daylight white, 360deg - LED Bulb
2 variants
4.4 12×
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Tesla - LED bulb FILAMENT RETRO BULB, E27, 4,2W, 230V, 470lm, 25 000h, 4000K daylight white, 360deg
LED Bulb , power input 4,2 W, 230 V, luminous flux 470 lm, neutral light (4000 K), diameter of 6 cm, lifespan 25000 h, energy label E, 1 piece in package
Discounted -32 % 2.14 € 3.19 €
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In stock
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Order Code: TslLigh22_70
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Alza Days Light Bulbs & Fluorescent Lights Sorted by Socket by Socket LED Bulbs LED bulbs Fluorescent Tube Lamps Fluorescent Tubes Efficient Lamps Efficient Smart Light Bulbs Light Sources Vintage & Retro Light Bulbs Retro Spotlight Bulbs Spotlight Light Bulb Value Packs Value Packs Oven Light Bulbs Oven AlzaPower Light Bulbs & Fluorescent Lights AlzaPower Jak vybrat žárovku
 

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