- Voltage
- 24V
- IP Rating
- IP20
- Cut
- 5cm
- Max Run
- 20m
- Warranty
- 7 Year
Warm White 3000K COB LED Strip 24V 10mm 480LEDs/m IP20 20m Run
SKU: COB24V20M-30K-10MM-IP20
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IP20 Indoor
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Dotless COB
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20m Run
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CRI 90
Encrypted & secure checkout
Description
COB stands for Chip on Board. For LED strips it means hundreds of tiny chips mounted directly onto the flexible circuit board under one continuous phosphor layer, giving a smooth unbroken line instead of the dotting you get from SMD tape.
3000K is the warm white most UK ceilings are already wired to. If your downlights say warm white, this sits alongside them without an argument.
24V DC · 480 chips/m · 7.5W/m · Ra>90 · 10mm × 2mm · IP20 indoor · cut every 50mm · 7-year guarantee
Will it really run 20 metres?
Yes. At 7.5W per metre it draws 0.3125A per metre, so twenty metres pulls 6.25A. A 12V strip at 14.4W/m draws 1.2A per metre — four times the current through a third of the copper.
What driver do you need?
Multiply your run by 7.5W, add a quarter, round up. Specify a 24V constant-voltage driver, not constant-current, which is sold under the same word and will give you uneven output and colour shift.
In practice that is a 60W driver for 5 metres, 100W for 10, and 200W for the full 20.
Where do you cut it?
Every 50mm at the marked copper pads, and a cut length lights exactly as the reel did. A 150mm lead comes fitted to the feed end. Never power it while still coiled; trapped heat destroys the adhesive and is a genuine fire risk.
Where must it never go?
IP20 means no moisture protection whatsoever. Indoors and dry only. Never outdoors, never in a bathroom zone, never directly above a hob — those need IP67, and IP65 is splash resistance only. Confirm your profile's internal width, not the name on the box.
Is 3000K warm white?
Yes — warm enough to feel domestic, clean enough not to read yellow. It sits between 2700K, which looks golden like a filament bulb, and 4000K, which reads neutral. Most warm white downlights sold in the UK are 3000K.
- Right for: plinths, cabinet tops, bedrooms, living rooms, hallways and stair runs.
We cut each order to the exact length you need from a 20 metre roll.
You can also reach the ATOM LED technical team on 01952 370028 or operations@atomled.co.uk to discuss your project, so we can help you choose the right products for it.
Browse the COB strip range, 24V drivers and profiles.
- Product Type
- COB LED Strip
- Colour
- Warm White 3000K
- IP Rating
- IP20
- Voltage
- 24V
- Watts Per Metre
- 7.5 W/m
- LEDs Per Metre
- 480
- Max Run Length
- 20m
- CRI
- >90
- Dimensions
- 10mm
- Warranty
- 7 Years
Specifications
- Product Type
- COB LED Strip
- Colour
- Warm White 3000K
- IP Rating
- IP20
- LEDs Per Metre
- 480
- Continuous Run
- 20m
- Voltage
- 24V
- Watts Per Metre
- 7.5 W/m
- Metres
- 20m Roll
- Dimensions
- 10mm
- Width
- 10mm
- Bending Angle
- Vertical Bend
- Cut Points
- 5cm
- LED Type
- COB
- Certification
- UKCA, CE, RoHS, UL
- Attachment
- Self Adhesive
- CRI
- >90
- Warranty
- Up to 7 years
- Brand
- ATOM LED
Delivery & Returns
On 97% of products — Royal Mail 48-hour tracked
Mainland UK orders over £90 — order by 1pm, Mon–Fri
30-day returns window — free returns on faulty products
01952 370028 · Mon–Fri 9am–5pm
Shipping
Free UK delivery on 97% of products is sent via Royal Mail 48-hour tracked.
Free next day delivery on Mainland UK orders over £90 (order by 1pm, Mon–Fri).
Orders placed before 1pm UK dispatch the same working day from Telford. Friday 1pm is the cut-off for Monday delivery, excluding paid Saturday Delivery and bank holidays.
Saturday Delivery is available as a paid option at checkout.
Large orders and pallet shipments: call 01952 370028 for a quote.
For more information see our detailed Shipping Page.
International Shipping
Northern Ireland shipping is charged at manual rates depending on shipment weight. International shipping uses manual zone rates at checkout.
Returns & Refunds
The 30-day return window applies to non-customised stock items returned in their original, unopened, uncut condition with original packaging. Eligible items include:
- Standard LED strip lights supplied as 5-metre rolls
- Straight aluminium profiles
- Power supplies and drivers
- Accessories (connectors, controllers, dimmers, end caps)
Custom-cut and bespoke orders (made-to-measure strip, custom-spec drivers, custom-length profiles, special-order items) are non-returnable unless faulty.
Faulty products qualify for free returns — we cover the return postage and either replace the item or refund the full cost including original delivery.
Refunds are processed within 5–10 working days of receiving the returned item.
For more details see our Returns & Refunds page.
Reviews
Frequently Asked Questions
What is the difference between IP65, IP67, and IP68?
IP65 handles surface splashes only and is not suitable for UK outdoor conditions or bathroom wet zones under BS7671. IP67 is rated for temporary immersion and covers outdoor garden installations, most bathroom zones, and exposed architectural features. IP68 handles continuous submersion for ponds, fountains, and fully exposed outdoor applications. For most UK garden and decking projects, IP67 is the correct choice.
Can I cut this product to a custom length?
Yes. ATOM LED products can be cut at the marked cut points without voiding the warranty. Many competitors restrict cuts to 50–100mm intervals, which wastes offcuts on tight custom runs. Use sharp scissors or a craft knife for a clean cut, then seal the end with a suitable end cap.
What size driver do I need?
Multiply the total metres by the wattage per metre, then add 20% headroom. For example: 10 metres of 24V neon flex at 9W/m = 90W total, so you need a minimum 108W driver. Never load a driver above 80% capacity for long-term reliability.
Should I choose 12V, 24V, or 48V?
Choose 12V for caravans, cars, boats, and any project powered by a 12V battery. Choose 24V for most home and trade installs where you need dependable run length with lower voltage drop. Choose 48V for longer architectural runs where extra distance and single-feed flexibility matter. For underwater or submerged installs, use IP68 Waterproof lights and the correct driver for that product; do not use 48V underwater.
What is your warranty?
ATOM LED offers product-specific warranties: up to 7 years on single-colour COB strip, 5 years on RGB and RGBW COB strip, and 4 years on LED neon flex. The warranty covers manufacturing defects. Call 01952 370028 for warranty claims.
Do you offer free delivery?
Yes. Free UK delivery on 97% of products via Royal Mail 48-hour tracked. Free next day delivery on Mainland UK orders over £90 (order by 1pm, Mon–Fri).
ATOM LED
Light. Precision. Confidence.
From garden borders to commercial facades, ATOM LED neon flex delivers consistent, dot-free illumination that lasts. UK stock, UK support, up to 4 years warranty.
Shop All Neon FlexMade To Measure
Contact us
Tell us the run length you need and we’ll confirm the best setup for your project.
- Product
- Warm White 3000K COB LED Strip 24V 10mm 480LEDs/m IP20 20m Run
- SKU
- COB24V20M-30K-10MM-IP20