Double Row DC 12V 24V SMD 3528 240 piece LED per Meter Flexible LED Strip Light

The ILED-FX-3528 240D is a flexible LED strip built around the SMD 3528 package in a double-row layout, with 240 LEDs per meter. It is the most intense member of the 3528 range. Where the single-row strips give a line of light, the double row packs the LEDs closely enough that the light reads as nearly solid, with almost no gap between points, which is what you want when a strip has to carry real output.

Tech specs at a glance

The strip runs on 12VDC or 24VDC, draws 19.2W per meter and puts out about 1,500 lumen per meter with a 120 degree spread. Colour rendering is CRI above 80 as standard and above 90 on request. Each piece ships as a 5 meter roll, 15mm wide, cuttable in 25mm steps.

What the double row does

The 240D stands for the double-row arrangement, which is why it is so much denser than the single-row 30, 60 and 120 piece strips. Twice as many LEDs per meter means a brighter, smoother line where you barely see individual points. That near-solid quality is the reason it is used for feature and high-output work instead of a subtle accent. The price of that density is the power draw, at 19.2W per meter.

Dual voltage: 12V or 24V

With that much current per meter, the voltage choice matters. On 12V the drop shows up quickly, so 24V is the sensible default for anything but a short run. For coves, longer feature lines and whole-room work, use the 24V version and feed power from both ends so the middle stays even.

Choosing a colour

This is a static strip, so each piece is one single colour. You pick one of the seven available colours before ordering: red, green, blue, yellow, warm white, commercial white or cool white. The white options cover three temperatures, so warm white suits living spaces while cool white is cleaner for work areas. For accent or signage the red, green, blue and yellow single colours are the ones to use.

IP rating options

The same strip is offered in four protection ratings. IP20 is for dry indoor locations such as coves and cabinetry. IP65 handles covered outdoor and wet areas like eaves and facades. IP67 and IP68 are for where the strip gets fully wet or sits in harsh coastal air. Match the rating to the location, not the highest one on the list.

Build and installation

The strip cuts cleanly in 25mm steps, so you trim it to fit instead of bending a longer piece. It is 15mm wide because of the double row, so check your cove, channel or gap clears that width before you commit. It is backed with 3M yellow double-sided tape, and a 3M red tape is available on request. A 15cm input cable is fitted to the leading end, and connector cables can be customized to a different length or plug.

What is in the box

Each order ships with the strip as a 5 meter roll, the 3M yellow mounting tape, and the 15cm input cable on the connection end. Custom lengths are cut to order from the same roll.

What you need to supply

You will need a power supply at 12VDC or 24VDC, matched to the strip version, sized for your total meters, which the 19.2W per meter figure makes easy to add up. For dimming, a compatible LED dimmer is available. If you are not hard-wiring, use an adapter or driver that matches the strip voltage.

Where it gets used

As the brightest option in the 3528 family it suits task and worktop lighting, high-output coves, display and shop work, and anywhere you want a strong, near-solid line of light. Outdoors the IP65 and above versions handle eaves, facades and garden edges. The single colours also make it useful for signage.

Lifespan and reliability

The SMD 3528 LEDs carry a 50,000 hour rated life, which at typical use is well past a decade. There are no moving parts and no fan, so the strip does not fail through heat. It works from -20 C to 50 C, and with a 24V supply and a properly sized driver the heat stays manageable even in a tight cove.

Here is what installers tell us they like about the 240D 3528 strip:

Near-solid light. The double-row layout packs 240 LEDs per meter, so the line reads as almost continuous with barely any visible gap between points. That is the reason to choose it over a single-row strip.

The brightest in the family. At about 1,500 lumen per meter it is the highest-output 3528 we make, for feature and task work that needs real light.

Dual voltage choice. You can order it on 12V or 24, and for this density the 24V version is the one that keeps long runs even. That saves you from guessing the supply later.

Cut to the exact length. The 25mm cut step means you trim the strip to fit instead of wasting meters or bending a piece that will not sit flat.

Seven colour choices. The range covers three white temperatures plus red, green, blue and yellow, which handles most accent and signage jobs without going to a different strip.

The most intense 3528 strips like this one are used where you want a strong, near-solid line of light:

Task and worktop lighting. The 1,500 lumen per meter is enough to use as genuine lighting, not just a glow, so it suits kitchen worktops, reading zones and any surface that needs to be properly lit through the day.

High-output coves and feature lines. A long cove that needs to carry real light across a room is a good fit, especially on 24V so the output stays even from one end to the other.

Display, shop and showroom lighting. Where a softer strip would be too dim, the 240D gives strong, even light under cabinets, in displays and on counters where visibility matters all day.

Signage and edge accents. The single red, green, blue, yellow and white colours are handy where one fixed colour and a bright, smooth line are exactly what the design wants.

Architectural and facade. With IP65 and above, the strip outlines eaves, columns and garden edges outdoors, where it is weatherproof but still a strong, clean line.

A few things to check before ordering:

Size the power supply properly. This strip draws 19.2W per meter, so multiply your total meters by that and buy a supply with headroom. Undersizing is the main cause of a strip that dims at the far end.

Lean on 24V for long runs. With this much current, 24V holds the output further. If the line is long, choose the 24V version and feed power from both ends.

Check the 15mm width. The double row makes it broader than the single-row strips, so make sure your channel, cove or gap clears 15mm before you start cutting.

Match the IP rating to the location. IP20 is dry indoor only. Use IP65 for covered outdoor and wet areas, and IP67 or IP68 for full or harsh exposure.

Remember it is single colour. The strip is static, one colour per piece, from the seven available options. If you need colours that move, that is the addressable RGB range.