LED bulb BestService LL711 30W E27 3900 lm 4000K 100–240V

BestService LL711 is a 30W LED bulb with an E27 screw base that produces 3900 lumens at a neutral white 4000K color temperature. Built for 100–240V mains supply, this lamp is intended as an energy-efficient replacement for higher-wattage incandescent or halogen bulbs in general indoor lighting applications. The design focuses on high luminous output, stable color rendering and compatibility with standard E27 fixtures.

Advantages

The LED bulb delivers a high luminous flux of 3900 lm while consuming 30W, offering reduced energy use compared with traditional bulbs. A neutral 4000K color temperature provides balanced white light suitable for task and ambient lighting. The E27 base ensures broad compatibility with common sockets and the wide input voltage range supports international mains supplies from 100 to 240V. The product is appropriate for continuous household and commercial operation where bright, consistent light is required.

Suitable for

• General indoor lighting in homes and apartments
• Office lighting and workspaces that require neutral white illumination
• Retail and commercial premises needing high-brightness ambient light
• Fixture replacements where an E27 base and high lumen output are needed

Key specifications

• Power consumption: 30 W
• Luminous flux: 3900 lm
• Color temperature: 4000 K (neutral white)
• Base type: E27 screw
• Input voltage range: 100–240 V AC
• Typical use: indoor general lighting

How to use

Install the bulb into a compatible E27 lamp holder and ensure the mains supply is within the specified 100–240V range. Switch off power before replacing a lamp, allow any existing lamp to cool, then screw the LED bulb firmly into the socket. After installation, switch the power on and verify stable light output. The bulb is designed for use in open fixtures or fixtures that permit adequate heat dissipation; do not use in fully enclosed luminaires unless the fixture manufacturer confirms compatibility with LED lamps.

Usage recommendations

For best performance, use with fixtures that provide ventilation to avoid elevated operating temperatures. Avoid dimming unless the specific luminaire and driver support dimmable operation. Keep the bulb free from dust buildup to maintain luminous efficacy and check that the fixture's maximum allowed lamp power and size are suitable for this 30W LED bulb.