LED bulb Synergy21 Retrofit GU10 4W 3000K 400lm 60°

Synergy21 Retrofit GU10 LED bulb, 4 W, delivers warm white light at 3000 K with a luminous flux of 400 lm and a beam angle of 60°. Designed as a direct retrofit for fixtures using a GU10 base, this compact lamp fits recessed downlights, track heads and spot luminaires where focused, energy-efficient illumination is required. The bulb operates across a wide input voltage range and is specified for a long rated lifetime, making it suitable for domestic and small commercial applications that need stable warm lighting with low power consumption.

Advantages

The LED bulb offers immediate energy savings compared with equivalent halogen lamps while maintaining a warm 3000 K colour temperature. With a rated lifetime of up to 35,000 hours and a robust beam angle of 60°, it provides consistent directional light for accent and task lighting. The small, retrofit GU10 form factor allows straightforward replacement without modifying existing fixtures, and the broad input voltage compatibility supports reliable operation in varied electrical environments.

Suitable for

• Recessed ceiling downlights in living spaces and corridors
• Track lighting for accentuating artwork, retail displays or kitchen worktops
• Spot fixtures for task lighting in home offices and reading areas
• Small commercial spaces requiring warm, energy-efficient spot illumination

Key specifications

• Base type: GU10
• Rated power: 4 W
• Luminous flux: 400 lm
• Colour temperature: 3000 K (warm white)
• Beam angle: 60° (directional)
• Rated lifetime: up to 35,000 hours
• Input voltage range: 85–265 V

How to use

Ensure the power to the luminaire is switched off before replacing the bulb. Insert the GU10 base into the fixture by aligning the pins and twisting until secure. Restore power and verify correct operation. The bulb is intended for use in fixtures compatible with GU10 lamps and should be installed in enclosed or open fittings according to the fixture manufacturer's instructions. Avoid handling the bulb with bare hands immediately after long operation to prevent contact with hot surfaces.

Usage recommendations

Use this Synergy21 GU10 4W 3000K bulb for localised warm lighting where a 60° beam provides sufficient coverage. For uniform ambient lighting across larger rooms, combine multiple bulbs or use complementary diffuse fixtures. Do not use with dimmers unless the dimmer and bulb are explicitly specified as compatible.