SZHLUX 500W LED Grow Light 4x4/5x5ft with Timer and Temp Control, Full Spectrum Grow Lamp with 1056 Diodes,Indoor Plants for Seedling Veg and Bloom Grow Light
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Availability:
In Stock.
Arrives
Tuesday, Jul 28
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Wattage: 500.0
Features
- New Version-Lower purchase cost and higher quality yield: SZHLUX PT LED Grow Lights feature the latest, most cost-effective high-output LED technology available today - Diodes; the PT LED Grow Lights with a high energy efficiency of 2.7 umol/J, providing a powerful light output that consumes only 500w, and running 50% less power than HPS or Blurple lamps. The vegetable cover is 5 x 5 feet, and the flowering covering is 4 x 4 feet.
- Temperature Control and Timer Mode: Upgraded PT series with temperature sensor, temperature, and timer button. Automatically sets protection temperature to 85F; 8 light bars illuminate when the temperature reaches 86F; 6 light bars illuminate when the temperature reaches 91F; but when the temperature reaches 96F, the lights will turn off. It can effectively protect plants from being burned by heating, and the chandelier high can be adjusted appropriately to obtain a higher PPF.
- Suitable for All Growth Stages: Excellent Full Spectrum - White, Blue, Red, and IR (3000K, 5000K, 395nm UV, 660nm, and IR 760nm). 3000K diodes provide more reddish light and 5000K more blue. 395nm ultraviolet prevents the plants from growing too fast, the stems and leaves are thick, and the fruit tastes better. 660nm red and infrared is effective during flowering, it promotes plant growth and increases yield. Turn your seeds into your supply and the light looks quite natural,
- New Version Trapezoid Tube and Fanless Design:-Adopts high-quality aluminum material with a fanless design. The trapezoidal design makes the light-emitting and heat-dissipating area larger, effectively protecting the life of the lamp. without worrying about package damage.
Finish Type: Polished or Matte
Base Material: Aluminum
Bulb Base: E26
Item Weight: 14.1 Pounds
Lamp Type: lights
Bulb Base: E26
Switch Type: Remote
Additional Features: Energy Efficient, Full Spectrum
Light Source Type: LED
Power Source: Corded Electric
Number of Light Sources: 1
Is Waterproof: True
Bulb Shape Size: T
Mounting Type: Ceiling Mount
Wattage: 500.00
Lighting Method: LED
Control Method: Remote
Water Resistance Level: Waterproof
Voltage: 110 Volts (AC)
Is Product Cordless: No
Connectivity Protocol: Wi-Fi
Connectivity Technology: IR
Item Weight: 14.1 Pounds
Base Material: Aluminum
Shade Material: Aluminum
Material Type: Aluminum
Lamp Type: lights
Brand Name: SZHLUX
Recommended Uses For Product: Indoor
Included Components: Bulb
Number of Items: 1
Indoor Outdoor Usage: Indoor
Specific Uses For Product: Growing plants indoors
Number of Pieces: 1
UPC: 723258093890
Manufacturer: SZHLUX
Unit Count: 1.0 Count
Finish Types: Polished or Matte
Shade Color: Rose Gold
Style Name: Modern
Color: White
Shape: Square
Installation Type: Hanging
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Jul 28
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Used these on our indoor hydroponic peppers and brassicas, and they worked amazingly well. They do throw off enough residual heat to warm a roughly 10' x 14' room (we have two of them running), but nowhere near the heat generated by our similarly light output rated Mars units' remote ballasts. The later get so hot that I had to resort to relocating them outside of the room to an air conditioned space with a dedicated fan blowing over them. These on the other hand were a pretty perfect blend of good light dispersion with acceptably modest heat, but the plants loved them. Nothing ever got hot enough to trip the sensors, and it was nice to be able to link them together, so I'll be getting more as groceries continue to climb. Energy consumption wise I haven't run them next to the Mars fixtures on a Watt meter, but the Mars lights heat output tells me that they suffer on the energy efficiency front. The Mars units do have an adjustable output, which is very nice, but these worked just fine as they are, so as a value solution I would highly recommend them. The Mars lights, not so much, mainly 'cuz of that heat. Maybe in a below grade basement grow tent, but we're not growing weed, just produce,
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Reviewed in the United States on August 29, 2025 by Yosarian
Great light for a great price. Just finished my first grow cycle with it, so I can’t fully report on durability, but this thing works SO well. It’s super easy to set up and use, and the timer and temperature shut off functions work exactly as they should. I love that I can set the grow cycle right on the lamp, although I do have the other lights on a timer, it allows me to turn off lights in phases to mimic a sunset type twilight period. Great results with this thing, everything from my begonias to my buds are thriving.
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Reviewed in the United States on February 21, 2026 by TNalpinist
This is the worst grow light I have ever purchased. I have had many. I bought this one because I was taking a chance, because you cannot beat 500 watts at $200. I usually buy Spider Farmer, and I will will never buy another again from Szhluz. First, growers like to have control over the light. You have no control over dimming or turning lights off and on unless you set the temperature controls, and even then you can only turn off two of 11 lights. The literature that came with the product describes two products: PT5000 and PT8000. This is the real problem I have: I have only been running it a week and 2 of the light bars are out and the temperature control light won't come on either. The 2 light bars are completely out. The lights actually work fine, becuase I switch them with other that were working and they work. The just don't work. It is an internal problem on the board, the electronics. After it reaches a certain temperature these 2 light bars are supposed to go out, but that is not the problem. The just don't work period, and I have only been using it for a week. Now, my crop and I am going to lose thousands because of this. Also, when looking at the product on Amazon, it looks like it come with a seperate control box. The control box is not seperate but part of the light. It is a window with a few small push buttons. That is false advertising: it looks like you are going to get a seperate box to control the light. That is not the case. Also, again, you have no control over dimming: Any Light Bar that is on is on full blast no adjusting. Spider Farmer is the best lights I have ever used. I will not change again because of a seemingly discount price. And, again, the literature that comes with product is incorrect: It says that if you set the temperature at 85 degree it is on automatic; if it is set on 86 degrees, only 9 light will come on out of 11. Well, that is incorrect: If you set it at 86 degrees nothing happens. If you set it at 87 degrees, all 11 lights come on when it was working. I really don't know how long the 2 lights have been out in the last week. It was working just fine until I discovered yesterday that 2 lights were not working. I thought it had to do with the temperature control turning lights on and off because of reaching a certain temp. That is not the case; They are dead in those locations. It also says that at 96 degrees only six lights will come on. Again, all lights remained on at that temperature whether set or actually getting that hot. The little red light that lets you know that Temperature Control is in use is out and won't come on. Actually, if you unplug it, and plug it back in the red light does come and goes off. There is an internal problem with board that is running all the lights. Do not buy their products. I have never in all my years used such a light that has know idea what a grower wants. They want control. This product gives you no control over light output. It only lets you set timers, and temperature controls if working properly. Even though I recommend Spider Farmer as the best lights I have used with huge harvests, quick, they have changed over to this LED Bar Model. Because Szhlux is the only time that I have used the bar model, I am reluctant to purchase any grow light that is like this. Spider Farmer used to use the Board model, and that was the best. The diodes do not have any plastic covering. With plastic covering, you are losing some of the light because the plastice is reflecting some of the light away from your crop. And you must purchase at the bare minimum in wattage a 250 watt light. Just because it is advertising a specifice wattage, say 1000 watts, if you look at the specifications down at the bottom you will see the real wattage which is probably 200 watts even though they advertised 1000 watts. If its too cheap, you are not going to be happy. I have been doing great with 650 actual watts and the yields are 800 grams indoors. You must use a 5 gallon pot if you want larger yields. That is why planting outdoors usually give you larger yields if planted in the ground. If you are planted in a 2 or 3 gallon pot your yields are going to lower. The roots want to spread and be happy and live. But when restricted, yield is restricted. You want to grow right, you much control light, ph, etc. You must learn the science of what your crop loves and doesn't. It doesn't matter if you are growing tomatos to you know. Szhlux has done a poor job. You will also notice in the construction that different size screws where used to assemble the product. That is just poor. Yeah, it may be cheap, but you are taking a chance. I hope I am just the one-off. The one customer that got a poor light. But I learned a valuable lesson about grow lights. If you are using the Bar method and you can remove the plastic that covers the diodes, do it, remove them. You will get more light. And get a light meter, ph meter, etc. Nutrients: Fox Farm has good nutrients and they have good guides on how to use them, as well as how much light to use, parts per million, etc. Their guides just don't give how much nutrients to use, and on their charts, you don't have to use all the products. There are usually around 3 products and calcium at blooming that work just fine and they will be in the same color on their chart. They have different charts for different soils and hydroponics. They won't allow me to give no Stars, so I have been strong-armed to give One Star if I want you all to know the truth.
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Reviewed in the United States on October 11, 2025 by Sick to death over the real loss to me
Best value FS 500Watt GL available anywhere. No dimmer, but runs 11, 9, or 6 panels to achieve a lower output that are set manually, or controlled by the temp. function. It's easy to set up. Cool & quiet & bright; each bar has its own supply and are switched on by the controller. No UL, CSA just worthless CE mark. Failures I read about -detachable cord burning , panels dying. This would probably pass safety testing except for cord. Indoor use only. This is constructed with 1 watt LEDs running at 0.45 watt each so the diodes are not stressed, Each light bar is approximately 44 watts so it toggles between 260, 400, and 490 watts.. Plants are doing extremely well. I had to raise the light from 2ft to 4ft because they were TOO bright. Why spend 0.90-1.80 per watt on a name brand (SF Mars, Vivosun, AC Infinity etc)? Get this for $0.36 per watt.
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Reviewed in the United States on February 8, 2024 by Christopher J. Kenny
Great light for a 4'x4' tent
Reviewed in the United States on June 11, 2026 by Jeffrey
The light works great. When its fully powered. These lights when I purchased mine was labeled as covers a 6x6 area. Right after a purchased the light they changed the description to covers a 5x5 area. I have screen shots of it. Then, a big crazy issue with a second light not showing up as fast as the first caused me to purchase a third light because it was advertised as one day delivery and I needed that light fast as my plants outgrew the single light. It had been a week since the other light was supposed to be delivered when I purchased the third light. A bunch of craziness happened with Amazon in the process of purchasing these lights but to Amazons credit, they were incredibly accommodating. I dont know that there could possibly be a better company to purchase from and that is probably why Amazon does so well. They give the customer the benefit of every doubt. That could work to their detriment if people abused it. But they still do it. Making Amazon a highly customer oriented business. I noticed when I had one light going in a two light room that it didnt seem as bright as it did when I purchased the lights so I tested the PPFDs with the Photone app and sure enough, the light had lost half of its PPFDs after 3 grows at about 3 or 4 months each. At 24 inches above the plants at first the PPFDs were 1100 to 1200 or even higher. But photone limited its upper strength to only show 1200 max. After 3 grows the light was down to 600 in the center and 300 out toward the edges. So I tested all the lights I have with a KillAWatt draw tester and sure enough my light was only pulling 315w. So I tested 3 other lights I have. One was in the 340s and a 3rd light was at 390s. Then there was one more light I had that when I measured the PPFDs at 25 inches above the plant it measured 1200 so I am now down to one light that works perfectly still but it was only used through a half a grow because I noticed one of the other lights had a bar that went out. So I changed it out for half a grow. EDIT: The problem with the Szhlux product is it dims after a few uses whereas other lights that are name brand and well known companies you get like 5 to 10 years of constant use before they dim about 10 to 15%. This one cut in half in 3 or 4 grows. BUT, you can turn these lights up to about 135% past 100%. Which means you can get the power back. That though creates the concern that you are burning them up quicker by turning the power up. Which I can NOT confirm at the moment. The lights work incredibly well if they dont lose power and they will still grow plants even if they do lose power. However, in Grows you need a certain level of DLI per 12 hours and a certain amount of PPFDs to maximize growth without having more DLIs than you need which may not hurt a plant but certainly isnt usable over a certain amount without CO2 being added. So if a plant needs 40 DLI for MAX growth potential and its running at 12 at 12 inches then that is bad. Because that means anything lower is getting even less than that. You can use between 30 and 45 DLI in flower. But to utilize more than 45 you need CO2 or its just a waste of power. The plant wont use it. Also, though this light WILL grow all plants in a 4x4 tent... It will NOT allow for LST training in a 4x4 tent to get the entire tent filled by topping and low stress bending the branches under a Scrog net. What happens is, the plant grows fast when you root it properly and uppot it the entire way. But, what I noticed is I was able to bend the stems that grew overnight by about 6 inches in veg every day. I would bend them over and then the next day all the secondaries were 6 inches past the scrog so they had to be bent over every day. Once it got about 4 inches past the dimensions of the light it started curling back toward the light SO hard you could not bend the end of the branches anymore without them snapping because when the lights came on they would bend back toward the light SO much before getting to the end of the tent. So for LST you need a more powerful larger light for a 4x4 tent. So, my experience with these lights is that when you purchase them they will work as advertised but they will lose power. I dont know if its a driver or the LEDs themselves. Also dont know which LEDs are losing power. It could be just a general overall lowering of power OR it could be that just certain LEDs on the spectrum go lower and that would not be good. But I truly cant tell you which of the LEDs or if not ALL of the LEDs are losing power. Schlux seems to me to be a company advertising a cheaper alternative to buying an expensive light with the same power from a reputably well known brand. Sure the light is less expensive. But if you invest in lights you expect them to stand up to warranted specs. I dont expect warranty because you cant find the company to get warranty coverage. So though they do name a warranty they do not really offer one through any website. So I dont know what I could do. Not to mention its been over a year. If I had done something the moment I noticed a strip went out then maybe through Amazon the warranty would have been effective. But I didnt and now its been over a year so I dont expect anything from Szhlux or Amazon. I will just have to sell these as lower powered lights. They will still grow a plant. You just dont get coverage better than 3x3 and that 12 inches above the plant. So once they lose power you can no longer go by the recommended heights of the manufacturer. You will have to use an app or a way to measure PPFD and set the light right above the plants about 12 inches to get half the PPFD that you would have had had you raised it 32 inches above the plant. So it will grow tall plants that are narrow or short narrow plants that dont bush out over a 3x3 area. It will grow that plant fine. I wish I had known it was underpowered through my last grow because I felt like the finished plants did not produce like they did when the lights were new and I thought it was probably amendments or nutrients and maybe they flushed out but it was the light. Had I known I would have lowered the light on my plants to 12 inches instead of 24 and gotten way better yields. I am NOT saying do not buy this light. I am saying yes, its a less expensive alternative and does a phenomenal job for probably a grow to a few grows but then they will lose power and knowing that you just have to realize you will lose grow real estate and you will need to measure the PPFDs and raise or lower the light according to your plants light needs. You can also do what I plan to do. Keep using the lights but also buy a few cheap light bars from Amazon to supplement light around the edges of my tent . That will bring the wattage back up and give me more grow real estate while still not having my power over 500 watts. The 315 of the lowest powered light plus a few light bars on each of the walls of the tent should bring me right back around 480w which is where this light is supposed to be. So you wont draw more current. You can ALSO leave the light on veg for 23 hours a day instead of 18/6 and it will absolutely grow great that way. I have done it with great results. So, its not like when it loses power you cant grow anymore. The light will still do its job. You just need to be ready to supplement it after a grow or 3. Now, TO BE FAIR, I have NOT owned another brand or a big brand store light so for all I know they all lose power over time. That would not be beyond possible. In fact it is probably likely that they lose SOME power. Think about this... a PSU in a computer and in everything must be over powered because they will lose about 25% of their power over the course of a few years. So if you build a computer you need to know this so you dont under power your PC and end up needing to buy another power supply because the one you have wont power your computer efficiently anymore and you think its broken when really its not. It just did what they all do and lost some of its power and whoever gauged that PSU didnt gauge it expecting the 25% decrease in power. This is why there are ratings on PSUs of Bronze Silver Gold and Platinum, platinum being the highest even though it is worth less than gold now. lol Funny how people still see the word as higher than gold. So maybe its just normal for all lights. I am trying to be as fair as possible and let people know that you should look into this as a reality for ALL lights being possible. But I KNOW these lose power because they are the only lights I have ever owned. My friend has an 800w version of this light and he has not noticed decreased power yet. Through 2 grows. Should his light loose power I will update this review if possible. And even if his light did lose power he would probably not know because that light if it lost half its power would still be higher than mine. When the light is new it will run all the way through your grow on 23 hours a day for a month or so and then switch to 12/12 for flowering and you will get excellent results. The light should throw 1200 PPFD OR CLOSE to it from 24 inches off the plant IN THE CENTER of the light. Around the edges you should be pulling 600 even if you go outside of the lights physical measurements a bit. That would be a 5x5 coverage area. With the middle being double the edges. But once you use it a few grows just know that if you dont measure the PPFDs you may end up with a weaker light at the same heights of your first grow or second grow. So the only way to adjust properly is to know the power output and PPFDs of the light at the time of grow. Because one thing I am certain of... I have 4 of these lights and only ONE is still near 480w. And that one was only used for 1 month of a grow. The others have lowered to almost 100w loss and some even more than 100w loss. That is 25%. Which is STANDARD for power supplies. Which without one the light would not operate. So the question is, are they using capacitors that are 1000 hour capacitors or are they using really high end 5000 hour capacitors? I would say probably the former. Which means if you know about soldering electronics you could probably change out the capacitors and gain all the power back. I have done that very thing with computer PSUs and Monitors that had a PSU lose power after 3 years of use. I tore it apart went to Badcaps dot com and then found which capacitors I needed to change out, I changed ALL of them out instead of just the ones recommended because while I was in there I was going to make sure i had all new 5000 hour capacitors instead of the 1000 hour capacitors the company made the monitor put in it. Why do they do that? To save literal pennies on each unit. So when I replaced the capacitors to 5000 hours I didnt even expect the monitor to power on. It was my first time messing with electronics and soldering electronics. It not only powered up. But that was 2014 when I bought & fixed that monitor and my brother still uses that monitor TODAY in 2025!! So that monitor new lasted 3 years and then the caps went bad. It has been 11 years of daily use and still runs strong as it did when I fixed it. 5000 hour capacitors are worth it. How much did it cost me to change out all the capacitors? 12 dollars plus shipping which was about 2 dollars. So 14 dollars total and I fixed the monitor that the guy who sold it to me could have fixed FOR REAL before he sold it to me but he didnt want to do the work. The point is anything that has a PSU in it, if it has low hour capacitors in it its going to lose some power. The only way you will ever know that they didnt use those capacitors and know that your light wont lose power is with a guarantee. I think these companies should put a timer counting the amount of time the light is running and guarantee it for so many hours IF you dont mess with the timer. That way you will know exactly how good they believe their own product is. But the only way to know in the mean time is... YOU CANT KNOW. Sadly. So if you trust any review I guarantee you can trust this one. I can see a company doing this when they first start to maximize their ability to upgrade their products having good profits. But I can NOT see them continuing to gain a name while they are using inferior parts. When I first purchased the light its listing said it had Samsung 281s in it. But now it does not say that in any listings of Schlux lights. None of their listing mention Samsung LEDs now, that I know of. At least not the ones I have looked at. So I kinda feel misled but that was already dealt with by Amazon. At FIRST they tried to not do anything about the size of coverage being changed by a foot in each direction from 6x6 to 5x5 AFTER I purchased the light as if it was not really a big deal because the light at the time worked as advertised.... but then once I got a supervisor on the phone which was by no means difficult to get a supervisor, Amazon made everything right and was extremely accommodating. Overly so. Amazon does look out for their customers. And in the end I do not know if other lights lose power or how much they may. I would say anything with Samsung LEDs is going to be good and probably last longer. But Schlux offers a competitive light at a lower price and it works when its fully powered. Can also be supplemented when its power drops with very cheap light bars. So its not a rip off product by any means. It just loses power over multiple grows.
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Reviewed in the United States on February 14, 2024 by MSL
I got the PT-5000. It's about 490 watts actual draw. 9 bars of LED's. The time and temp settings on the digital display are easy to see and use. It turns on when I want, and Off when I want. I haven't had it through summer yet, so I don't know about the heat temp settings. Hopefully my stuff won't get that hot. I put the wires on the wrong ends at first. and it was out of balance. I also got 2 x 4" USB fans and put them ontop of the lights, so I got some airflow through the light. It helps keep a breeze on my canopy. This was a decent value for some Samsung 281b diodes, and a 500w size. I have 4 plants under it, and another 5 around it. You need to be about 15" away from the light for good sized flowers. UPDATE: 6 months later, Light is GREAT. UV & IR light Diodes on this one. Most lights don't have the UV, and it really really helps THC/CBD production.
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Reviewed in the United States on April 10, 2023 by Markus
So I purchased this light because my spider farmer sf4000 broke the driver stopped working. So since spider farmer told me it was going to be like 4 months to either get the driver or a repair or a new light I bought this one instead. Upon arrival of my spider farmer light it's still sitting in the box while I'm using this one because it's outperforming the spider farmer sf4000. Pick and choose what you want for your grow but if you're trying to save money you will get results out of this light. The temperature USB sensor does not work it did not work on two units that I had of this light since I returned the first one thinking it was defective but for the price you really can't complain. I don't use it and the unit reads 32° f LOL that's okay though I really don't care because it's working and I've tested it with my par/luxmeter. Excellent value for the money and it saved my grow when my other light went bye-bye. If you're looking for a light and trying to save some money I would suggest this one it's pretty good hopefully she less more than a year like the previous spider farmer one did not
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Reviewed in the United States on August 9, 2024 by MartyCohen