G4 LED Bulbs UK | 12V, 24V, Wet Area, Dimmable

G4 LED Bulbs, Low-Voltage Bi-Pin for Wet Areas, Caravans, and Under-Cabinet Lighting

G4 LED bulbs for low-voltage applications, including wet area compliance under BS 7671, under-cabinet lighting, caravans, and architectural installations. Available in 12V and 24V AC/DC with CRI 90+, rendering colour accurately in the compact bi-pin form. CE/UKCA certified, three-year warranty. Reviewed and rated by over 2,200 customers.

The G4 bi-pin bulb is the foundation of low-voltage LED lighting in UK homes, caravans, and commercial spaces. Dulora's G4 range is available in 12V and 24V AC/DC configurations, covering under-cabinet kitchen lighting, bathroom wet area zones compliant with BS 7671, caravan and motorhome systems, and architectural accent lighting where low voltage is specified.

CRI 90+ across the range, rendering colour accurately in the compact bi-pin form. Many models are rated for 12 to 24V AC/DC universal operation, making a single bulb type suitable across both residential low-voltage and commercial 24V systems.

For the full 12V and 24V product ranges, see 12V Bulbs and 24V Bulbs. For driver selection, see LED Drivers.

CE/UKCA certified, three-year warranty, 2,200+ verified reviews. Trusted by UK homes since 2010.

G4 Bulbs: The Low-Voltage Bi-Pin for Wet Areas, Caravans, and Compact Installations

What is a G4 bulb and where is it used?

A G4 bulb is a compact LED with a bi-pin base where the two pins are spaced 4mm apart. It operates at low voltage (12V or 24V) rather than mains voltage, making it the standard choice for bathroom wet area zones under BS 7671, under-cabinet kitchen lighting, caravan and motorhome interiors, and architectural accent lighting.

The compact physical size fits into small recessed housings and slim under-cabinet fittings that larger bulb forms cannot serve.

Which G4 voltage do I need: 12V or 24V?

12V is the standard for most residential applications: bathroom wet area fittings, under-cabinet kitchen lighting, and caravan systems running on 12V batteries. 24V is used in commercial low-voltage installations and longer cable runs where reduced current is preferred.

Dulora's 12 to 24V AC/DC universal models work across both voltages. Check individual product listings for voltage compatibility.

Do G4 bulbs need a driver?

If the G4 bulb is being installed in a mains-powered fitting, yes: a driver or transformer is required to convert 230V to 12V or 24V. If the bulb is going into a system already running at the correct voltage (caravan battery, solar installation), no driver is needed.

For new installations, a constant-voltage LED driver is recommended. See LED Drivers.

Atmosphere, Illuminated.

Frequently Asked Questions: G4 Bulbs

What is the difference between G4 and G9 bulbs?
G4 is a low-voltage bi-pin (12V or 24V) with 4mm pin spacing, used in wet areas, caravans, and under-cabinet systems. G9 is a mains-voltage bi-pin (230V) with 9mm pin spacing, used in kitchen pendants and designer wall lights. The two are not interchangeable.
What CRI rating do Dulora G4 bulbs have?
CRI 90+ across the range, rendering colour accurately in the compact bi-pin form.
Are Dulora G4 bulbs suitable for bathroom wet area zones?
Yes. Dulora G4 12V DC bulbs are suitable for wet area installations compliant with BS 7671. Installation must be carried out by a qualified electrician carrying out Part P notifiable work.
Are Dulora G4 bulbs certified for UK use?
Yes. All Dulora G4 bulbs carry CE/UKCA certification and are covered by a three-year product warranty.