Description

42 LED Circular Replacement Lamp for Fluorescent Light Upgrades – 12V / 24V LED Upgrade Board (Pre-Wired Lead)

The Aten 42 LED Circular Replacement Lamp provides a simple and cost-effective way to modernise existing low-voltage light fittings without replacing the complete fitting. Designed to operate from both 12V DC and 24V DC systems, this high-output circular LED board replaces older halogen or incandescent lamps with bright, energy-efficient LED lighting while allowing you to retain the original light fitting. Ideal for motorhomes, caravans, campervans, boats, horseboxes, commercial vehicles and off-grid installations, it offers a straightforward lighting upgrade with significantly reduced power consumption, lower heat output and a much longer service life.

Upgrade Rather Than Replace

Many older ceiling lights and bulkhead fittings remain in excellent condition, but the original bulbs consume unnecessary power, generate excessive heat and require frequent replacement.

The 42 LED Circular Replacement Lamp allows you to keep the original fitting whilst upgrading the internal light source to modern LED technology, saving both installation time and replacement cost.

Designed for 12V & 24V Systems

The integrated electronic regulation allows the lamp to operate reliably from any 10–30V DC supply, making it suitable for both 12V and 24V electrical systems.

This makes it ideal for:

• Motorhomes and campervans
• Caravans
• Boats and yachts
• Horseboxes
• Commercial vehicles
• Off-grid solar installations
• Emergency and utility vehicles

Reliable LED Performance

Unlike many basic LED replacement boards, the Aten 42 LED Circular Lamp incorporates voltage regulation together with built-in protection against voltage spikes commonly found in vehicle electrical systems.

This helps provide stable light output whilst protecting the LEDs from fluctuations that can shorten the life of inferior products.

Bright, Efficient Illumination

Using 42 high-quality LEDs, the lamp provides bright, even illumination whilst consuming only a fraction of the power required by traditional lighting.

The result is longer battery life, reduced heat generation and a more comfortable lighting environment.

Important Installation Information

This LED replacement board is designed to operate from a 10–30V DC supply only.

Many customers use these boards to upgrade older fluorescent light fittings in caravans, motorhomes, boats and commercial vehicles. Fluorescent fittings do not normally operate directly from 12V or 24V. Instead, they usually contain an internal electronic inverter (or ballast) which converts the low-voltage supply into the much higher voltage required to run the fluorescent tube.

The inverter/ballast must be disconnected or removed before connecting this LED board. Connecting the LED board to the output of the fluorescent inverter will damage the board and is not covered under warranty.

Once the inverter has been bypassed, the LED board should be connected directly to the original 12V or 24V DC supply.

If you’re unsure how your existing fitting is wired, we’re happy to help. Simply email us a photograph of your light fitting (or the inside of the fitting with the cover removed), and we’ll advise how it should be connected before installation.

Ideal Applications

• Replacement caravan ceiling lights
• Motorhome interior lighting
• Boat cabin lighting
• Horsebox lighting
• Commercial vehicle interior lights
• Existing low-voltage ceiling fittings
• Off-grid lighting upgrades

Key Features & Benefits

• Modernise existing light fittings without replacing the complete unit.
• Suitable for both 12V and 24V DC systems (10–30V regulated).
• Built-in voltage regulation for stable performance.
• Integrated voltage spike protection helps protect against vehicle electrical fluctuations.
• Bright, even 42 LED illumination.
• Lower power consumption than traditional lighting.
• Reduced heat output for safer, more efficient operation.
• Long service life with minimal maintenance.
• Suitable for leisure, marine and commercial vehicles.

Why Choose Aten?

Unlike many generic replacement LED boards, our lamps are specifically designed for vehicle and leisure electrical systems. Every unit incorporates voltage regulation and protection circuitry to provide dependable operation from both 12V and 24V supplies, making them suitable for demanding mobile applications where reliability matters.

Choosing the Right Version

This version is supplied with an 15cm pre-wired lead. If you would prefer the lamp supplied ready to connect with a factory-fitted cable, please see our 42 LED Circular Replacement Lamp with connector.