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Free Shipping on most orders over $175 | Sales Tax in NJ only
Free Shipping on most orders over $175 | Sales Tax in NJ only
Bottom-up view of the GrowPros HM660 showcasing the dual center control unit and wide LED bar coverage designed for maximum plant yield and photosynthesis.

GrowPros Classic Series HM660 Full Spectrum

by GrowPros
Save $180.00 Save $180.00
$825.00
$825.00 - $825.00
$825.00
$645.00
$645.00 - $645.00
$645.00

🌿 Free shipping on $175+ orders in the USA

🌿 Ships to Canada, AK & HI. Call us for info

🌿 Price match guarantee, details here

Energy Rebates & Bulk Pricing Available

SAVE BIG on your grow setup! Email or call us at (973) 206-7590. For rebates eligibility, click here.

Cash Payment Discounts & Financing Options

Get an additional 3% off when you pay by ACH, Money, or Zelle. Select your option at check out.

We accept all major credit cards, crypto and Paypal 0% credit plans. More details here.

Full Manufacturer’s Warranty

You buy it, we back it! Your purchase is fully covered with a manufacturer’s warranty. More details here.

Get to Know the GrowPros Classic Series HM660 Full Spectrum

Elevate your hydroponic growing operation with the HM660 LED Grow Lights, a state-of-the-art 660W full-spectrum LED lighting system designed for both commercial indoor and greenhouse applications. This comprehensive lighting solution provides growers with precise control over every phase of the plant cycle, from the vegetative stage to flowering. By replicating the full spectrum of natural sunlight, the HM660 creates optimal conditions for indoor plants to thrive, ensuring maximum growth potential and robust yields.

Recommended Setup

  • FLOWER: 4’X4′ AREA, MAX:5’X5′ AREA
  • VEG: 4’X4′ AREA, MAX: 6’X6′ AREA

DIMMABLE SPECTRUM

Slide the Bar to See How the Spectrum Changes

0
100%

PPFD

Features

  • Versatile Compatibility: Seamlessly integrates with the most popular controllers on the market, offering flexible control options.
  • High LED Density: Equipped with 3500 LED diodes, including deep red 600NM HM diodes, to deliver a full-spectrum light that supports vigorous plant development.
  • Convenient Power Outlet: Features a 120-277V AC output quick access outlet on the fixture for efficient power connections.
  • User-Friendly Design: Foldable design allows for easy installation and storage, reducing setup time.
  • Energy Efficient: Provides up to 30% more energy savings compared to traditional HID and HPS lighting systems, lowering operational costs.
  • Optimized Spectrum: Spectrum optimized by growers for both vegetative and flowering stages, promoting healthy and productive plants.
  • Enhanced Light Output: Scientifically engineered to maximize photosynthesis, growth, and overall yield.
  • Power Chaining Port: Allows for chaining multiple units together for expanded coverage.
  • 0-10V RJ12 Dimming Control: Provides precise dimming capabilities for customized light intensity.

Daisy Chaining

What's Included?

  • 1x HM660 LED Grow Light
  • 1x 10′ 240V Power Cord
  • 1x Daisy Chain RJ12 Data Cable for connecting multiple lights
  • 2x Steel Wire Slings for secure mounting
  • 2x 8″ Rope Ratchets for adjustable hanging
  • 4x Thumb Screws for easy assembly

Download Resources

Maximum Power Electrical Data

AC Current: 120V - 5.96A | 208V - 3.50A | 240V - 2.95A | 277V - 2.71A

AC Power: 120V - 713W | 208V - 700W | 240V - 695W | 277V - 685W

Power Factor: 120V - 0.998 | 208V - 0.983 | 240V - 0.975 | 277V - 0.945

Who Should Use This Light?

  • Commercial Growers: Ideal for high-yield indoor cultivation requiring full-spectrum control.
  • Greenhouse Operators: Great for supplemental lighting to enhance plant health and yield.
  • HPS & HID Replacement Seekers: Provides up to 30% energy savings while delivering superior light output.
  • Automation-Ready Facilities: Compatible with major controllers and features 0-10V RJ12 dimming for precision lighting.

Best Applications

  • Full-Cycle Cultivation: Optimized spectrum supports both vegetative and flowering stages.
  • Scalable Commercial Setups: DLC-listed for rebates, reducing operational costs.
  • Fast & Easy Installation: Pre-assembled with a foldable design and quick access wiring.
  • Efficient High-Output Growing: Passive cooling system ensures long lifespan and consistent performance.

Why Shop with Grow Light Central?

“There’s a crapload of equipment providers out there. What makes Grow Light Central so special?”

“There’s a crapload of equipment providers out there. What makes Grow Light Central so special?”

Grow Light Central is a cannabis equipment solution provider connecting you to 100+ brands and 60+ suppliers trusted and used in the best cannabis facilies across the country.

With years of cannabis growing experience, Anthony, the owner and operator, personally ensures every order is handled right. No passing you off, no runaround, just the expert service and advice you deserve.

Specifications

Wattage: 660W (Boost up to 732W)

Input Voltage: Auto Sensing 100V-277V

Controller: TrollMaster Hydro-X + LMA14

Control: 0-10V Dimming (0-100%)

Daisy Chain Port: RJ12

Mounting Height: 36 inches above canopy

Power Factor: >95%

Thermal Management: Passive

Working Temperature: -40°F to 122°F

IP Rating: Suitable for Dry & Wet Locations

Lifetime: L90 > 54,000 Hrs

Warranty: 7 Years Limited

Certifications: ETL, FCC, DLC, CE

Heat Load Per Fixture: 2320 BTUs

Performance Data

PPF: 1820 µmol/s

PPFD: 1325 µmol/m²/s

PPE: 2.7 µmol/J

Dimensions

Length: 5.69 inches

Width: 1.5 inches

Height: 1.5 inches

Gross Weight: 36 lbs

FAQs

How many watts do I need for my grow space?

The wattage depends on the size of your grow tent or room. A general guideline is 30-50 watts per square foot for high-light plants like cannabis. For example, a 2x2 ft area may need 100-200W, while a 4x4 ft area may require 400-600W for optimal coverage.

What is the difference between full-spectrum and red/blue LED grow lights?

Full-spectrum LED lights mimic natural sunlight, providing a balanced mix of blue (for vegetative growth) and red (for flowering and fruiting) light. Red/blue LED lights focus on specific wavelengths but may not support plants as effectively as full-spectrum lights.

Does GrowPros offer energy rebates for its products?

Yes! The potential savings from energy rebates are substantial, often covering approximately 50-75% of the overall project cost. To get a personalized estimate of your potential savings, simply contact us and we'll provide a complimentary assessment tailored to your project.

How much energy can I save with GrowPros' energy-efficient lights?

Upgrading to LEDs can cut your energy use by up to 75% compared to old-school incandescent bulbs and around 40% less than HID lights. That means lower electricity bills, especially if you're running multiple fixtures. Plus, LEDs last way longer, so you’ll save even more on replacements and energy costs over time.

Can GrowPros LED lights be customized for different cannabis strains?

Absolutely! We offer customizable spectrums and intensities to match the specific needs of different cannabis strains. Whether you're growing high-THC or CBD-dominant plants, our tailored lighting solutions help optimize growth, potency, and terpene profiles.

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