Spectrum King

Spectrum King SK402 LED Grow Light

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Bulk/wholesale pricing available for this product:
call us or email us for volume quote.

The Spectrum King SK402 LED grow light is the perfect solution for indoor growers and gardeners looking to save money and improve their plants’ health and harvest.

The SK402 is a 460-watt patent pending full spectrum LED grow light made in the USA. It easily replaces 800-watt MH and HPS fixtures. Need something more powerful? 

All white, highly reflective 460 Watt Patent Pending Full Spectrum LED Grow Light made in the USA. The all-around white coating gives better intensity on the outer edge of your canopy.


Coverage Area

The SK402 covers up to a 16 sq ft in flower (4×4 ft) and up to 36 sq ft in veg (6×6 ft).



The white light spectrum is powered by Cree LEDs and can be used for both VEGETATIVE and FLOWER growth.



Safety Certified and IP65 Rated

Rugged waterproof housing for use in wet and humid conditions. Safe for outdoor use.


Energy Efficient

The fixture draws half the wattage of an 800-watt HPS while delivering similar light intensity.


Advanced cooling technology

Extra efficient heatsinks lower overall ambient room temperature.


Additional features

Great for supplemental greenhouse lighting.

Nine-foot power cord and two large eye-hooks for hanging included. 

*120° option available only


Manual Dimmer (optional)

Reduce light intensity down to 10%.


Dual warranty

  • Guaranteed to maintain 90% or better light output for 3 YEARS with regular use
  • 5 YEAR mechanical warranty on all parts and labor

Spectrum King is the only company to guarantee light performance over its lifetime with 3rd party certified data.





Model/SKU: SK402/sk-402

True wattage: 460 watts (dimmable to 10% with dimmer)

HID equivalent: 800 to 1000 watt HID

LEDs: High performance Cree LED diodes

Beam angle: 120°

LED lifespan: Up to 100,000 hours (at L70)

LED Initial LUX (90˚ Reflector): 112,500

Initial µmol (90˚ Reflector): 1950 µmol

Spectrum: Full spectrum (near UV to IR)

Coverage area:

  • Vegetative footprint: up to 5.8' x 5.8' (34 sq ft)
  • Flowering footprint: up to 4' x 4' (16 sq ft) 

Hanging height: 

  • Vegetative: 30"-42"
  • Flowering: 12"-18"

    Daisy chain: No

    Dimensions: 13"W x 13"H x 11"D

    Product weight:  25 lbs

    Body Lens: Glass

    Body Case Material: Die cast aluminum

    Voltage: AC 120V~240V (480 VAC Available upon special order)

    Work frequency: 50~60 Hz

    Cord length: 9'

    BTU: 1,534

    Certifications: IP65 rated

    In the box you'll find:

    • 1 x SK402 LED grow light
    • An 9-foot, 120V or 240V power cord

    Manufacturer's warranty: 3 years on light intensity, 5 years on parts and labor 



    Free Fast US Delivery
    For Orders Over 99$

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    Free, Fast Local Shipping

    All continental US orders over $99 qualify for free shipping.

    Discreet Shipping

    We understand the importance of privacy to many of our customers. All orders placed on Growbuds are shipped in plain boxes without explicit identifying marks.

    Estimated Arrival

    Between 1 and 5 business days, depending on your location.

    Easy Returns

    For up to 90 days, depending on the brand.


    Please refer to our Shipping & Returns policy page for more detailed information.

    All products sold on Growbuds are subject to the respective manufacturer’s warranty policy, which can be found on manufacturers websites or by contacting them. If your product fails in the remainder of our returns period, the manufacturer's warranty policy will prevail. In this case, send us an email at support@wegrowbuds.co and we will assist you in your warranty claim by helping you coordinate with the original manufacturer.

    Our experienced commercial team has helped supply hundreds of indoor, outdoor and commercial greenhouses projects in Canada and the United States.

    Looking to get a quick quote? Contact us at support@wegrowbuds.co or call at 1-877-900-2632 option 2 to talk with a Growbuds sales representative. Otherwise please fill out the quick form below and we will be in touch as soon as possible.

    United States Headquarters

    2915 Ogletown Road
    Newark, DE 19713, United States

    Canada Headquarters

    295 Cure-Labelle Boulevard,
    Laval, QC H7L 2Z9, Canada

    Call Us

    Toll Free: 1-877-900-2632
    Hours: 9AM - 5:00PM EST

    Email Us


    You may be wondering why you should buy your grow lights from us, instead of other available authorized dealers. Read on for the answers to all your burning questions.

    10 Reasons To Trust Growbuds With Your Business

    Customer Service

    We are here to help and want the best for you. Use our live chat, email us at support@wegrowbuds.co or call us at 1-877-900-2632 during business hours. We are always here for you.

    Full Warranties and Generous Return Policies

    We only carry top American brands that back their products with full warranties and return policies of up to 90 days, depending on the brand.

    Earn Growbuds Points

    Earn points on all your purchase and save big on your next purchases. You'll earn 4 "Nugs" for every dollar your spend. You can then use your "Nugs" to save on your next grow room upgrades. Get started by creating a free account today.

    Price Match

    We want you to be absolutely secure that you're getting the best price with us, so we will not only match a lower price you find online before purchase, but will even refund you the difference up to a month after purchase.

    Discreet Insured Shipping

    All orders ship via FedEx, UPS, and USPS, or a reputable freight company and the shipment is always insured, so you do not have to worry about a lost or damaged package. You also don't need to worry about prying eyes: all orders ship discreetly.

    Hassle-Free Returns

    For up to 90 days, please refer to our Shipping & Returns policy page for more information.

    Free Shipping

    On orders over $99 to the lower 48 states.

    No Sales Tax Anywhere

    Except for MI, and CA for some brands.

    Authorized Dealers

    We only carry American brands whose lights and other products have been extensively tested by real growers and processors. 100% US warranty on all products.

    Safe & Secure Systems

    In place for every payment transaction.

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    Free Fast US Delivery
    For Orders Over 99$

    Safe Checkout