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SZHLUX

SZHLUX 400W LED Grow Light 4×4ft with Timer and Temp Control, Full Spectrum Grow Lamp with 864 Diodes for Indoor Plants, Sunlight Plant Light for Seedling Veg and Bloom Grow Light

    • Based on 166 reviews
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Color: PT4000


Size: 400W


Features

  • High Efficiency and Low Energy Consumption- SZHLUX PT LED Grow Lights utilize the latest in high yielding LEDs technology diodes, high Energy Efficiency with 2.9 Umol/J, delivers powerful light output and uniform canopy penetration to resulting maximum higher yields. Actual power is 400W with 864 LEDS, effective footprint is 4 x 4 ft.
  • Temp Control and Timer Modes- Upgraded PT series with temp sensor, temp button and timer button. The light hanging height can be adjusted properly, plants will get more PPF value, no more electricity will be wasted. Auto setting Temp is 85 F; When temperature is up to 86 F 7 light bars on; When temperature is up to 91 F 5 light bars on; When temperature is up to 96 F the light would be turned off.
  • Sunlight Full Spectrum- Infinite close to sunlight wave for plants, over 95% light energy can be absorbed by plants. White, blue, red and IR (3000K, 5000K, 660nm and IR 730nm). 3000K providing more reddish light and the 5000K providing more blueish. Especially 5000k blue light promotes seedling growth, the 660nm red and 730nm IR light is most useful for plant photosynthesis, promote plant flowering and fruiting, increase yield and crop quality.
  • Trapezoid Tube and Fanless Design- Original Factory innovation designed Trapezoid-shape Led Tube for larger luminous area than T5 and T8 led tube. Premium aluminum shell with fanless design for faster dissipation speed, make your growing life easy and quiet, allowing your plants receive more energy and without burning.
  • Cost-Effective Upgraded Grow Lamp- Larger light costs about half for HPS light, our upgraded PT series adopt the latest drive with temperature control and timing design button instead of traditional dimming knob, more scientifically designed for the whole stages of plant growth.

Color: PT4000


Shape: Rectangular


Material: Aluminum


Finish Type: Aluminum


Light Source Type: Light Emitting Diode


Product Dimensions ‏ : ‎ 23.6 x 23.6 x 2.55 inches; 9.9 Pounds


Item model number ‏ : ‎ PT4000


Date First Available ‏ : ‎ December 8, 2021


Manufacturer ‏ : ‎ SZHLUX


Best Sellers Rank: #67,735 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden) #286 in Plant Growing Lamps


#286 in Plant Growing Lamps:


Customer Reviews: 4.0 4.0 out of 5 stars 166 ratings


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Top Amazon Reviews

🚀 Abunda's Overview

This is our summary and key points to consider based on customer reviews.

The SZHLUX PT4000 LED Grow Light is generally commended for its exceptional brightness, efficiency, and quality build that fosters plant growth. Users find value in its accurate 400W output, built-in timer functionality, and its impact on their plant's development. Some reviews revealed a few shortcomings with control quality, the lack of a dimming feature, and minor delivery discrepancies.

Pros

  • 🌿 Light is effective, promoting explosive plant growth
  • 🕒 Built-in timer found useful by reviewers
  • 💎 Excellent value for the cost
  • 💡 Accurate 400W power output
  • 🔧 Easy installation and setup

Cons

  • 🌗 Lack of a dimmer option
  • 🎚️ Control quality does not match the rest of the unit's quality
  • 💼 Minor issues with delivery and package contents
  • 📘 Poor quality of the English language instructions

Should I Buy It?

If you're a horticultural enthusiast in need of a reliable, reasonably priced grow light that offers extensive benefits to plant growth, the SZHLUX PT4000 LED Grow Light is a worthy consideration. Despite a few minor drawbacks, most users are satisfied, noticing remarkable improvement in their plant health and growth.

    • Great grow light!!! 😁
This light works very well! It has a timer you can set to turn & off on whatever times you need. And it has 3 settings.... Full spectrum with all 10 lights on, with only 7 lights on, & only 5 lights on. Started my grow 2 weeks ago & couldn't be happier.
Reviewed in the United States on August 25, 2024 by Nikki
    • Excellent value
I needed to upgrade my flowering tent from 2x2 to 4x4. The specs on this unit matched those of another unnamed manufacturer at about 1/3 the cost. The tent surprised me showing up the next day so I set it up with the old TS2000. Happy surprise, SZHLUX PT4000 LED Grow Light showed up a week early! Setup was easy, just slide shades onto the ends and hang it up. It's very lightweight and puts out a lot of light. The only negative is the lack of clarity and poor quality of the English Language timer and programming instructions. This doesn't harm my system, but I would like to better understand these features which might be of benefit to my operation. ... show more
Reviewed in the United States on July 16, 2023 by Edward John Raynie
    • Really good light for the price.
Review Image by Kaela Kaela
The media could not be loaded. Awesome, little 400 watt light. I've been satisfied with it from the get. Go doing my first grow and have had no problems. Little difficult to set up without the instructions. But it's not that hard to figure out. Wish it did had a USB Jack for wireless capability. It hits 550 PPFD at 26 inches away at 80% power ... show more
Reviewed in the United States on March 6, 2024 by Kaela Kaela
    • The PPFD map is WAY exaggerated
Hooked this up and did a PPFD map on the highest setting. The 40" map is what I get ROUGHLY at 20", and I never get over 1100 PPFD, even at 2". It will work, but I built a 48x24 LED Array out of the same company's garage work light. The light map is better on them, with 5500K, and the PPFD map beats even the best numbers on this one, and it actually reaches those numbers. This is a very yellow light, but it is not as intense as 5 48" 60W 5500K LED bars... I will of course keep testing, but I am nowhere satisfied with this product. That's what I get for ordering from Amazon, and bad product from a bad company working with a bad company. No guarantees, no customer backup, it's like rolling the dice every time. ... show more
Reviewed in the United States on September 4, 2024 by Jennifer
    • Searched for months before picking this baby
Starting your own grow room is a lot of fun and of course its very rewarding the more you know. So I'm learning a lot. But this light here has the best group of ppfd's that I have found on most lights. The good price is also a good factor.
Reviewed in the United States on December 7, 2023 by james
    • Quality
So far so good, after I found a cord that works. The connection was loose. Good thing it is fixable. That’s if the company would help. This is 2 lights now w/issues. The first didn’t even have a cord. Want to get another but I’m not a fan is the lighting controller. Easy to use but if you use a outside timer system it’s pointless. Otherwise so far the light performance is close to factory specs mines a little short on the pmols. ... show more
Reviewed in the United States on August 12, 2023 by After a walk about they are comfortable for a 10 hour day. They seem durable though it’s only day one. The clip on the laces did come off. So I was disappointed on the quality. So I’ll order another to see if the y are consistently off. Otherwise if the durability is there in 6mo I’ll say it’s worth the $$.
    • Extremely Bright Light for affordable price.
I currently have this set up in a 5x5. I'm using it two grow some tropical Bonsai Trees during colder months. In the past 2 weeks my Trees have received more new growth that they have in the last 6 months next to a south facing window. The leaves are greener, the Trunk looks fuller. It is in a controlled environment where the temperature stays at around 80-82°F and RH around 40-50%. Im leaving the light on 16 hours a day. But if your wondering if this will do better than a south facing window. Then answer I yes. I also have watermelon, Jalapeño and cantaloupe around the edges of the tent and they love it. ... show more
Reviewed in the United States on April 15, 2022 by Valerie Sanchez
    • Great Light and Customer Service !!
The light is powerful, bright and has great coverage for your canopy. The built in timer function is easy to use and rids yourself of purchasing a separate timer. About 6 months after the purchase one of the LED panels developed a flicker. I reached out to Szhlux through Amazon and explained to them of my issue. They responded quickly and a new panel was on its way to me within days. I highly recommend this product !! ... show more
Reviewed in the United States on November 1, 2022 by Matt

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