- California Lightworks SolarXtreme 640 LED Fixture
- Power Cord (120V or 240V)
- Heavy-Duty Hanging Hardware
- Instruction Manual
California Lightworks SolarXtreme 640 Full Spectrum LED Grow Light
starting from 0% interest financing from
/mo.
- 1792 μmol/s PPF for high intensity 4' x 4' coverage
- High-efficiency LUMILEDS diodes with 2.8 μmol/J PPE
- Plug-and-play setup with 120V or 240V power options
- 3-year warranty
- View More Details
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Commercial & Bulk Purchasing
We support operations & licensed facilities with volume pricing, dedicated account managers, and custom equipment consultation.
Who This Is For
- You are moving to a high-output LED because your current fixtures create hot spots that stress the upper canopy.
- You are upgrading to a 4x4 footprint because managing multiple small fixtures in one space is a cable management mess.
What We Found
- The physical dimming knob feels solid and is much faster to use than scrolling through a digital menu on a screen.
- These arrive as a single solid piece, so you are not wasting time bolting together flimsy bars and brackets.
- The RJ12 ports are tucked away neatly, making it easy to run clean daisy-chain lines without a mess of cables.
What Users Say
- Buyers who swapped out their HPS lights say their cooling bills dropped immediately without losing flower density.
- Growers using a single 640 in a 4x4 tent report more uniform growth in the corners where light usually falls off.
- Users who added the optional controller say they stopped worrying about light stress during the transition to bloom.
California Lightworks SolarXtreme 640 Full Spectrum LED Grow Light
Are you struggling to achieve the yields you expect from your indoor garden? The California Lightworks SolarXtreme 640 is the high-performance solution designed to eliminate lighting bottlenecks and maximize your harvest potential.
The SolarXtreme 640 is a professional-grade [LED grow light](/collections/led-grow-lights-for-sale) engineered for serious growers who demand intensity and efficiency. Whether you are managing a 4' x 4' grow tent or a larger commercial room, this fixture provides the full-spectrum power needed for both vigorous vegetative growth and explosive flower development. By utilizing premium LUMILEDS diodes, this light delivers a massive 1792 μmol/s PPF while maintaining a cool, energy-efficient operation.
Take total control of your environment with the built-in dimming knob, or pair it with the optional [SolarSystem Controller](/products/california-lightworks-solarsystem-controller) for automated light cycles and sunrise/sunset simulation. If you are looking for a more compact version for smaller spaces, consider the [SolarXtreme 250](/products/california-lightworks-solarxtreme-250-full-spectrum-led-grow-light). The SolarXtreme 640 arrives fully assembled and plug-and-play ready, featuring RJ12 ports for easy daisy-chaining in larger setups.
What's Included
Features
💡
Full-Spectrum Power
Delivers a powerful PPF of 1792 μmol/s, optimized for all stages of plant growth.
⚡
Energy Efficiency
With an impressive PPE of 2.8 μmol/J, get more light per watt while cutting costs.
🛡️
Built to Last
Loaded with premium LUMILEDS diodes, known for durability, longevity, and high performance.
📐
Ideal Coverage
Engineered to provide even, intense coverage in 4' x 4' grow tents or large gardens.
🎛️
Precision Control
Built-in dimming knob (20%-100%) and optional controller compatibility for custom light cycles.
🔌
Plug-and-Play
Ships fully assembled and ready to hang with no complex wiring or setup required.
Spectrum
The SolarXtreme 640 utilizes a custom-engineered full-spectrum white light that mimics natural sunlight. This spectrum is designed to drive high rates of photosynthesis and promote healthy plant morphology from seed to harvest without the need for spectrum switching.
Specifications
| Specification | Value |
|---|---|
| Power | 640W |
| Input Voltage | 120-277V AC |
| PPF | 1792 μmol/s |
| PPE | 2.8 μmol/J |
| Coverage Area | Up to 4’ x 4’ |
| Dimensions | 43.8" x 44.8" x 1.89" |
| Weight | 14 lbs |
| Warranty | 3 Years |
Spectrum
Warranty
California Lightworks offers a 3 year warranty for this model. This warranty does not cover operator error or abuse.
FAQs
What is the recommended hanging height?
For best results, we recommend hanging the SolarXtreme 640 approximately 18-24 inches above the plant canopy, adjusting based on the growth stage and plant response.
Do I need a separate ballast for this LED light?
No, the SolarXtreme 640 is a fully integrated system with built-in drivers. It plugs directly into a standard power outlet.
Can I daisy chain multiple SolarXtreme 640 units?
Yes, the fixture includes RJ12 ports that allow you to daisy chain multiple units together for centralized control and streamlined wiring.
Is the SolarXtreme Controller included?
The fixture includes a built-in manual dimming knob. However, the digital touchscreen SolarXtreme Controller, which allows for automated scheduling, is sold separately.
How does this compare to a 1000W HPS system?
The SolarXtreme 640 provides comparable yields to a 1000W HPS while using significantly less electricity and generating much less heat, reducing your cooling requirements.
Happy To Help
Questions About This Product?
Our specialists are happy to help. Call us or send a message and we'll get back to you within one business day (most of the time within a few hours.)
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