Warm White 3000K COB LED Strip 24V 10mm 480LEDs/m IP20 20m Run

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 · 677 lm/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. Feed a 20 metre run from one end and the far end looks the same as the near end. 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.