Dually Series 4-LED Square LED Work Light, Black (one)

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Dually Series 4-LED Square LED Work Light, Black

Spot Optics

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  • Spot Optics
  • Flood Optics
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Width: 3" (10.2 cm)

Height: 3.25" (10.2 cm)

Depth: 3.15" (10.2 cm)

Style: Dually Work Light (one)

Raw Lumens: 1,200

Actual Lumens: 640

Comes With:

  • -Adjustable mounting bracket and hardware
  • -Deutsch-connector braided wiring harness with switch
  • -Limited Lifetime Warranty



Diode Dynamics Dually work lights set a new standard for value: high quality, at affordable prices. These may look like others on the market, but make no mistake! These are high-quality, US-designed work lights, not knockoffs. With Diode Dynamics, you get the cost savings of standardized designs, but a high level of quality, matching name brands on the market.

LED Components. Diode Dynamics uses only genuine, USA-made CREE LEDs in its work lights. Knockoff lights might say "CREE," but there are many counterfeit LEDs coming from Asia. Diode Dynamics purchases LEDs directly from CREE's USA authorized distributors, ensuring that they are indeed genuine CREE LEDs, with the highest quality and brightness available.

Since Diode Dynamics controls the assembly and production of its lights, there are no mismatched colors of LEDs, like you commonly find in knockoffs. All LEDs will be the exact same color and brightness, for uniform output.

The LEDs are powered by constant-current circuits that have been designed by Diode Dynamics, with custom-made aluminum-backed PCBs for effective heat transfer. The circuit makes use of USA-sourced components, driving the LEDs with maximum power, while featuring thermal protection and voltage suppression for excellent reliability under any operating scenario.

Housings. Diode Dynamics uses high-quality cast aluminum housings for its work lights, which have been powdercoated to specification with a matte finish, to be highly durable, easy to clean, and great at hiding fingerprints. Knockoff light bars are simply painted, resulting in many blemishes and runs in the paint, and a "shiny" appearance.

These bars only use high-quality steel hex cap screws to affix each piece in place, with various accent colors to allow for a unique appearance.



The process for assembling work lights is not complicated! It just takes time and skill to provide a high-quality end product.

First, Diode Dynamics production technicians arrange various pieces of hardware, and carefully inspect them for any blemishes or defects.

Then the pieces are meticulously added. First, the LED panel is installed into the housing, with thermal adhesive and hardware. The power wires are soldered in securely, and tucked away.  

Next, optics are arranged carefully, as specified by the build, and the reflectors are added as necessary, and secured in place. The fitment and spacing is critical to ensuring a uniform light output. Knockoff bars usually show a lack of attention to detail in this area.

Next, the gasket must be carefully installed to provide a watertight seal, and the unbreakable polycarbonate lens is fastened in place with the retaining frame. Each screw is carefully torqued to specification to securely hold the piece in place, while not causing stress, which can lead to seal failure over time.

Before it's complete, a high-quality Deutsch connector is added, to ensure that the bar will be powered reliably, with a waterproof seal. Knockoff LED bars will rarely use any connectors- you're just left with bare wires instead.



Lumens: Most sellers only provide the "raw" lumen numbers, based on the maximum potential brightness of the LED chips on the bulb. For example, if a work light has 4 200-lumen LEDs, they might say it has 800 raw lumens. In order to provide some level of comparison, Diode Dynamics also provides a "raw lumens" calculation, because this rating is so widespread in the industry. However, this is not an accurate measure of brightness, as the LEDs in the light bar will never run at the maximum, or "raw" power level.

As often as possible, Diode Dynamics tests the actual brightness of lights in our lab, to provide real lumen output measurements. Our measurements are accurate, but they are usually much lower than the "raw" figures. Please click here to learn more about LED brightness measurement.



Diode Dynamics offroad lights utilize lenses, not simple reflectors like those found on cheap knockoff lights. This provides a much more efficient light- nearly all of the light is directed as intended, not lost as glare.

Flood: This optic style provides a wide beam of light. This is ideal for general illumination.

Spot: With a focus lens, the spot optic directs light in a narrow pattern, for illuminance of objects in the distance. This type of optic is ideal for driving lights (off road only).



Diode Dynamics work lights are a white 6500K color, like other name brands on the market. Knockoff light bars are generally more blue, which is straining on the eye. All LEDs are highly uniform, so there will be no variance in color along the length of the bar.

The color can be modified by colored lens cover attachments (available separately).

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Worry-free warranty

  • -Full 3-year warranty on all products
  • -No waiting: we usually send new items out with a return label (US customers only)


You will get quick help from our trained staff for any issues.

All Stage Series products carry a limited 8-year warranty.

For further details, please see our full article.

Domestic (US) Customers

  • - Same-day shipping for all orders placed by 12:00 PM CST (or until 4 PM with rush processing)
  • - USPS, for delivery in 3-5 days (on average)
  • - Express services are available, see exact pricing at checkout
  • - Fully Insured


International Customers

  • - We ship to all countries via standard mail
  • - Usually around $10 for LEDs, or $25 for HIDs.
  • - Choose your service on checkout to see exact prices:
  • - USPS 1st Class: 2-5 weeks
  • - USPS Priority: 1-2 weeks
  • - Express EMS: 1 week
  • - Please email us if you are unsure about shipping to your country.

You will receive updates from our site when your order is shipped, along with a unique shipment number to ensure that your order is correctly accounted for. This allows you to easily reply to us if you have any concerns.

Whether your order is big or small, it is tested through many run cycles, and each bulb is tested before shipment. Every single bulb. Every time. And if anything does go wrong, you can rely on our industry-leading warranty for worry-free replacement.

If you're not happy with your items, we want to make it right. So we have some pretty awesome return policies:


30 day return policy. All customers have 30 days from the date of original order shipment to return items.

Full refund, no fees. At Diode Dynamics, we offer free returns. That means no restocking fees, no administrative fees, and no hassle!

 Free return label. If your original order was over $50, you get a free return label for your items (US customers only). If your order was less than $50 or international, you can send the items back through your preferred method.


Within 30 days: If your original order was over $50, you can get new items shipped to you with a return label (US customers only). If your order was less than $50 or international, we can send you the new items first, but you are responsible for returning the old items.

Within 90 days: Any item can be returned for exchange or store credit within 90 days. The buyer is responsible for the cost of the return shipping, and must first return the old items. We'll still cover the postage for the new items.


Please note: due to the nature of custom acrylic pieces, we cannot offer any refund or exchange for returned custom acrylic items.


To make a return or exchange, please request an RMA, or give us a call. When we get it back, you will be notified and credited appropriately.

Again, all returns must be approved, with an RMA. This is so that we can process your return as quickly as possible when we get it. If you would like to return an item, please Request an RMA. Please include as much information as possible about the reason for return.

Alternatively, you can also send us a message, or give us a call!