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Blue plastic COB LED strip with USB plug and three-button controller, 3.28 ft

3KEYCOB100 3.28FT COB LED Under Cabinet Strip

SKU CH-10EX-FXB0J MPN 3KEYCOB100

A 3.28-foot COB LED strip with built-in three-button dimming control for smooth, dot-free RGB lighting

  • Item nameXINGZHI 3KEYCOB100
  • Type of switchButton Control, push button
  • Product line3KEYCOB100
  • Lighting typeLED
  • Rated voltage12 V
  • Number of lamps1
  • USB power works with power banks and laptops
  • 3-button controller adjusts brightness instantly
  • COB design gives smooth, dot-free light
  • Strong adhesive backing for tool-free mounting
  • 5 V low voltage runs cool and safe

USB-powered COB strip for compact spaces

This 3.28-foot COB LED strip draws power from any USB port, making it a plug-and-play choice for renters, students or anyone who wants accent lighting without wiring. The built-in three-button controller adjusts brightness instantly, and the adhesive backing mounts on clean, smooth surfaces in seconds.

Fits tight gaps and frees up outlets

At 39.36 inches long the strip tucks under cabinets, behind monitors or along shelf edges where longer reels would not fit. USB power means you can run it from a TV port, laptop or power bank, leaving wall sockets free for other devices. The 5 V supply keeps heat low and the light safe to touch.

Replaces hardwired puck lights

It removes the need for a transformer, switch wiring or a separate dimmer module. The jump is worth it when you want dot-free RGB colour mixing in a single-metre run that you can move or remove without tools or permanent marks.

How it compares

Measured against everything we stock in Under-Cabinet LED Lighting, at today’s prices. Recalculated every night.

Price $16.99
Cheaper than about 78% of the 196 comparable items (median $26.99).

Specifications

Product
Brand nameXINGZHI
Model name3KEYCOB100
Part number3Key02-RGB-1m
Item nameXINGZHI 3KEYCOB100
Product line3KEYCOB100
Lighting typeLED
Design styleModern
Product typeBedroom
Power
Rated voltage12 V
Energy efficiencyLED
Size & build
Number of lamps1
Surface finishBlue
Main materialPlastic
Product weight0.13 lb (0.06 kg)
Overall size39.36 in, 1, Count
Overall length39.36 in (100 cm)
Environment & compliance
Certification listingXINGZHI - 3KEYCOB100–3Key02-RGB-1m
More details
Type of switchButton Control, push button
Placement and useBedroom
Origin countryLFKJ
Care and useIndoor

Questions about this item

What is the maximum voltage this strip can handle before it overheats?

The strip runs on a 12 V supply but is powered through a 5 V USB connection, so the 5 V limit is what protects it from excess heat.

How much heat does the 5 V USB power supply add to a cabinet after hours of use?

The 5 V low-voltage design keeps heat output low, and the plastic housing stays cool to the touch even during extended runs.

Does the built-in controller need a separate power adapter or does it draw from the USB port?

The 3-button controller is powered directly from the same USB port that feeds the strip, so no extra adapter is required.

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