Sanlight Evo 4-120 LED – 255W High Efficiency Grow Light

The Sanlight Evo 4-120 LED is a high-performance 255W lighting system designed to revolutionize your Indoor Grow, offering a superior light spectrum and an efficiency of over 3 µmol/J to maximize bud density and resin production without the heat issues of traditional lamps.

Why your current lighting is holding you back

Problem: You know the drill. You check your tent, and the temperature is spiking again. You are constantly fighting against the heat emitted by HPS or inefficient LEDs, forcing your extractors to run at full speed. Meanwhile, your electricity bill keeps climbing, but your harvest weight and quality seem to hit a ceiling you just can't break.

Agitation: It is incredibly frustrating to pour hours of work and expensive nutrients into your plants, only to end up with airy, fluffy buds because the light intensity wasn't consistent or the heat evaporated your precious terpenes. You feel like you are always compromising—either burning your plants to get more light or raising the lamp and losing yield. It’s a losing game that wastes your time and money.

Solution: The Sanlight Evo 4-120 changes the rules. By switching to this advanced LED technology, you eliminate the excess heat immediately. Its optimized rectangular design and tilting secondary optics ensure that every photon hits your canopy, not the walls. You get professional-grade light intensity (696 µmol/s) with a fraction of the power consumption, allowing your plants to express their full genetic potential in a cool, controlled environment.

What exactly does the Sanlight Evo 4-120 deliver?

This isn't just a bulb; it's a piece of precision engineering from Austria. The unit is built to fit perfectly in spaces with a depth of 120cm. It combines the latest chip technology to ensure your plants get the exact spectrum they need for both vegetative and flowering stages.

• Advanced Chip Technology: Features Osram Red and Far Red LEDs for flowering power, combined with Seoul Semiconductors White LEDs with WICOP technology for a balanced spectrum.
• Smart Design: Weighs only 5.1kg and measures 1018 x 291 x 116mm, making it easy to handle and install.
• Passive Cooling: Massive aluminum heatsinks keep the unit cool without noisy fans, extending its lifespan.
• Optical Precision: The secondary optics protect the LEDs (IP65 rating) and allow you to tilt the light to direct intensity exactly where your buds are developing.

How your routine changes from now on

Once you hang the Sanlight Evo 4-120, the first thing you'll notice is the drop in temperature. You won't need to run your air conditioning or extraction as hard, which makes your grow room quieter and easier to manage. The "hot spots" that used to burn your top colas will be gone, replaced by an even blanket of light.

As the weeks go by, you'll see the difference in plant structure. The internodes stay tighter, and the flowers develop a hardness and frostiness that HPS just can't match at this wattage. You stop worrying about heat stress and start focusing on pushing your nutrient regimen to the limit because your plants will be hungry for more.

Advantages and benefits you'll notice from day one

• Massive Efficiency: With >3 µmol/J, you are getting more light for every watt of electricity you pay for.
• Yield Potential: Capable of hitting 2 grams per watt if your environment is dialed in.
• Longevity: Operates for over 90,000 hours with minimal degradation—this light is an investment for years.
• Spectrum Quality: The Far Red inclusion mimics the natural sun, triggering a faster and more vigorous flowering response.
• Flexibility: Compatible with magnetic dimmers (optional) so you can simulate sunrise/sunset or lower power for seedlings.

Tips to combine it with other Pevgrow products

To get the absolute most out of this light, you need an environment that matches its quality. Since the Sanlight Evo runs cool, you might find your plants drink less water than under HPS, but they will uptake nutrients more efficiently.

• Grow Tent: This unit is physically designed for 120cm depths. It pairs perfectly with our Large grow tents to ensure reflective walls maximize the photon bounce.
• Lighting Control: Consider adding a dimmer if you want full control over the intensity during the early vegetative stage.
• Nutrients: With high PPFD levels, your plants will need a robust feeding schedule. Ensure you have a solid CalMag supplement handy, as LEDs often increase calcium demand.

Frequently Asked Questions

What size grow tent is this light best for?

The Evo 4-120 is optimized for areas with a depth of 120cm. For a standard 120x120cm tent, many professional growers use two of these units to achieve maximum light intensity across the entire canopy, though one unit provides excellent efficiency for smaller footprints or vegetative growth within that space.

Do I need to add extra CO2?

While this light is powerful, it is designed to work exceptionally well without added CO2. However, if you use two units in a 120x120 space and push the intensity to the max, adding CO2 can help you utilize that extra light for even bigger yields.

Is the cable included?

Sanlight fixtures are professional units and often require a specific power cable which is sometimes sold separately depending on your region's plug requirements. Please check the "What's in the box" section or add the compatible Sanlight power cable to your cart.

Personal Experience of Pevgrow’s CEO (Alan)

"I've seen a lot of lights come and go, but the build quality of the Sanlight Evo series really impressed me. When I tested the 4-120, I was skeptical that 255W could really compete with my old setups. I was wrong. The density of the nugs was incredible—rock hard and dripping in resin. What I love most is the tilting optic feature; being able to angle the light slightly lets you hit those lower bud sites that usually get shadowed. If you're looking to upgrade to Full spectrum led grow lights and want German-style engineering, this is a solid winner."