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🌱 Grow smarter, not harder — light up your indoor jungle with FARMLITE brilliance!
The FARMLITE 240W LED Grow Light Bar offers professional-grade full spectrum lighting with daisy-chain dimming for up to 100+ units, IP65 waterproof aluminum housing, and silent fanless heat dissipation. Designed for 4x4ft coverage, it supports precise 0-10V dimming and master/slave control, making it ideal for serious indoor growers seeking scalable, durable, and efficient plant lighting solutions.












| ASIN | B0B81Z28HB |
| Batteries are Included | No |
| Best Sellers Rank | #64,236 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #241 in Plant Growing Lamps |
| Brand Name | FARMLITE |
| Color | Black |
| Customer Reviews | 4.6 out of 5 stars 284 Reviews |
| Finish Type | Powder Coated |
| Finish Types | Powder Coated |
| Included Components | Instruction Manual , 1x3M Long RJ11 Signal Cable,2xAdjustable Hanging Kits. 1x3M power cable.2xUnadjustable Hanging Kits |
| Item Dimensions L x W x H | 23"L x 23"W x 2"H |
| Item Weight | 3 Kilograms |
| Light Source Special Features | Dimmable, Daisy-Chain Connectivity |
| Light Source Type | LED |
| Light Source Wattage | 240 Watts |
| Manufacturer | FARMLITE |
| Manufacturer Part Number | DE-4 |
| Manufacturer Warranty Description | 3 year manufacturer. |
| Material | Aluminum |
| Material Type | Aluminum |
| Model Number | QS-BAR4 |
| Mounting Type | Hanging |
| Number of Light Sources | 1054 |
| Power Source | Corded Electric |
| Set Name | Daisy Chain |
| Shade Material | Aluminum |
| Shape | Rectangular |
| Smart Home Compatibility | Not Smart Home Compatible |
| Style Name | Industrial |
| UPC | 761780382693 |
| Wattage | 240 watts |
L**Y
Great budget grow light--fantastic really--we'll see how long it lasts!
Saw these lights when they popped up on a prime day sale last week (october 11th) Never heard of FARMLITE before, but the price was real nice, and the specs were promising. I purchased two of these 240W FARMLITE fixtures for my 2.5x5x7 tent. Here are my thoughts: 1️⃣How do they fit in a 2x2/2x4 tent? Two of these lights would absolutely push the limits of a 2x4 tent. One might even be overkill for a 2x2. They are, in my opinion, "just right" for my 2.5x5 tent, and they MIGHT even be powerful enough to flower in as big as a 3x6 space. MAYBE. 2️⃣How are the specs? At 100% power, hanging 16" (This originally said 26", I just noticed my typo a year later, OOPS.) over the canopy, the Photone app was registering 45.6 DLI in the center below each fixture. This is more than enough for autoflowering plants. At 75% power, I have them hanging 12" over the canopy, and registering 42.9 DLI in the center below each fixture. This is also more than enough for autoflowering plants. 3️⃣Do they run hot? I have 3 cheap $15 6" clip fans in my tent--one is pointed at the drivers from the corner bar of the tent, and both drivers are only just warm to the touch after hours of running. The light bars themselves are also just warm to the touch. Tent temps at canopy sitting comfortably at 73F, while temps outside the tent in my basement are 68F. I imagine running them at 100% all the time would jump it maybe to 76-78F in the tent. Totally reasonable temperature ranges. 4️⃣Are they hard to put together? Not at all. They don't come with an instruction manual, just a little fold out pamphlet with light information and a "what this light comes with" page. It even comes with a screwdriver. Screw all 4 light bars into the 2 fixture bars, screw the fixture bars into the driver base, plug the light bars in, hang the lights, plug the drivers in. You're good to grow. 5️⃣Are the components quality? Yes. The diodes look like genuine samsung diodes to me, size is right, look is right. If they're fakes, they're damn accurate ones. The drivers are high quality from a reputable company--Can't say i'm familiar with them, but googling turns them up, feel free to check them out for yourself! The light was easily put together, held with just 10 screws and its solid! 6️⃣But what about the PPFD? I grow mainly in autos, so PPFD is irrelevant to me. But for the sake of this review, I measured with Photone on my phone, a note 9, and at 12" over canopy, center of the light, 75% power; it's registering about 706PPFD. From what my enthusiast grower discord buddies tell me, this is great for autoflowers, and just right for photoperiod plants. At full power, these will provide more than enough light for flowering photos. 7️⃣Conclusion of review At the time of writing this review, these lights are 149.99 USD. That is a good deal for the quality and light output of these lights, even if the diodes are older models. I purchased them during a prime day sale for $108USD a piece. That is an absolute steal. If you see these lights on sale and in stock--nab these suckers. You won't regret the purchase, they aren't a junk no-name low quality light. These are solid, high quality grow lights. 8️⃣Final thoughts Maybe in the future, we'll get an upgraded model and all they'll change are the diodes, and it would be an amazing budget light.. Hint hint, FARMLITE. ;) That would be amazing, and make these lights even better than they already are. I've had them in my tent for all of 5 hours as I write this review, so I'll update if anything catastrophic happens. 9️⃣October 28, 2023--1 year operational use update: Added a few new pictures to show what I've grown beneath these lights. I am currently in my 4th grow using the two 240w FARMLITE fixtures i purchased just 1 year and 10 days ago. I cannot stress to potential buyers enough: these really are fantastic lights for their price point. 🔟Final Final Thoughts: I have taken to recommending pretty much just FARMLITE lights when people ask me about grow lights. They are affordable and powerful and perfect for new growers who want to get into the indoor growing hobby. Now i'm telling you to give these a try, I doubt you'll be disappointed. Tent and Light pairing recommendations: 2ftx2ft, 2ftx3ft: One 240w 2ftx4ft, 2.5ftx5ft: Two 240w 3ftx6ft: Two 240w OR one 320w 4ftx8ft: Two, preferably Three 320w
R**A
It’s bright!
After watching this light for a bit I decided to give it a try when it had a good price and I have no regrets. The first one I received was clearly used, missing pieces, was just loose in a box, and so I contacted Amazon. They quickly sent a new one and had the other one picked up at my house which was very nice. When I received the new one it was obviously new, with the parts neatly packed, wrapped in plastic and it even came with a screw driver to put it together. I’ve now had this light for almost a year and it has run for 18 hours a day every day since with no issues. It doesn’t run hot at all no matter how high I go. My plants love it. It’s actually a really strong light and I’ve kept it at 75% most of the time. I love that it has a free flowing dimmer, it was easy to put together, it’s actually pretty large (240w) and I want to get another one day. According to my readings on my light meter it’s great on par and I’m able to reach the DLI I need. I can’t think of anything negative about the light honestly as it works for me. I have 2 other brands which are good as well but I haven’t really tested them separately. I’d say overall they are pretty comparable but the price on this one is better especially for what you get so if I had a choice I’d have 2 of these in my big tent.
A**B
Outstanding. IYKYK type product
I picked up this light and its bigger brother during a fantastic sale. Rather than list all the lights I've played with before, I'll just say buy this one, if budget is a concern and performance above price point is important. Running this in a 32x32. Has Even wall-to-wall coverage. Plants absolutely loved this light. It will carry you through all phases. Something in the spectrum perked them way up. Definitely a light you'll play with the dimmer with. Again, I bought two of these and I have zero regret. While this fits in the category of budget light, the performance is not budget, many of us have an incessant need to look for the best product at the lowest price, stop here. If you have a toe or more in the spectrum, all puns intended, like I do, I'll reiterate a few necessary points: Easy assembly, true dimensions as listed, fantastic value, proper length power cord, Loved it to the point I bought the bigger light as well. A++
J**N
Great little light
Great light PPFD as advertised
H**A
Works.
Looks pretty good, I’ve noticed this has more warm color diodes than cold. Feels like those burple lights almost. The dimmer is from 10-100. Not 25%-40%-50% etc. I had a vipar spectra xs1500 pro and that had more cold diodes but barely using it so in bout a year I’ll update if anything on how the light went. So far, I’m happy with it but again, 1 day use. I’m at roughly 60% power and my 32x32x63 tent with two fans and a humidifier has maintained the heat below 79. I also have a 4” inline vent from hong&guan.
S**E
Great price for product
Got mine today and it wad easy to put together. They even provide the screw driver with magnetic tip. A few screws to fasten to the bars plug and play after. Good hangers and the light is excellent. The Samsung diodes are legit. Power chord could be longer but its average length for these. Easy to get a power strip and hook up for surge anyway so not a negative. Dimmer works well and you can daisy chain. Great price for product. I'll get another soon.
M**N
Update edit
I picked this led mainly cause it said detachable power supply, yes it is detachable but it only has about 10" reach .I was contacted by seller about the cord and was told I can get a extension to make it have a longer reach, never heard back from them so that never happened. The light works pretty good , because I have the power supply right outside the tent stays around 80° with just the clipp fan and no added a/c in a 70° room. For the price of the light i think you should be able to buy an extension for power supply, it's cheap enough that I wouldn't be disappointed that the extension doesn't come with it. I will update review in about 30 days when I harvest.
D**L
Nice light! 💡 love it.
Replaced a Mars Hydro bar light, older model ran hot and less even dispersion. The color, intensity with much less heat. I fell like my plants love it! This is a 2x4 got here quick and packed nicely easy to assemble. Comes with all the hardware you need including the screwdriver.
M**L
Bin zufrieden
Sehr gute Lichtleistung. Was mich aber bisschen stört ist die hohe wärme Entwicklung. Bin aber sehr zufrieden mit dieser Lampe
J**E
A very good cost per Watt for a no frills grow light
ill have to update after ive had the chance to grow something with these. but i have it in the tent and i"m excited to see how this compares to a my Vivosun boards in the other tent. what i like: Amazing price 130 cdn good PAR rating (for sure not what is advertised but within standards across other light makers) solid construction good coverage easy set up good control growing : Update : I’ve had a few grows on this now and it’s does a pretty good job reasonable growth and coverage. It 100% works and pretty well for 230w. Now negatives: it gets very hot at about 90% power and above. Last measurement at 100 power came in at 39c which indicated a waste of efficiency or power. So at the price it was worth it but if efficiency at the wall is your goal there might be better options. At 130 I’d buy again but if it’s closer to 200 there are more efficient models out there where you would likely make back the money you saved on cheaper model at the wall. I’m going to keep my eye on Farmlite I think there is potential.
S**G
Excellent price, good value.
Been an indoor grower for over 35 years and paid thousands for 1st generation LEDs. This Farmlight LED is an excellent price and value if it lasts. Just plugged it in and looks good. It's in my veg room replacing a Viparspectra fan cooled model. The reds failed altogether as well as being noisy and heavy to hang, the Farmlight is lightweight, easy to assemble and dimmable. Also Daisy chain equipped.
D**_
Preis-Leistung passt, tolle Lampe!
Diese Growlampe ist sein Geld wert… habe damit schon viele Grows schön hochgezogen. Warum auch immer gehen photosensitive Pflanzen damit am besten, im kleinen Zelt muss man bei Autos etwas aufpassen. Aber auch das geht. Preis-Leistung sehr gut!
C**S
WOW!!! awesome light!
Bought this light to put in my 32"X32" tent for mother plants. Assembly was really easy, only about 5 minutes. Got it hung up and turned it on and was almost blinded by how bright it was!! Plants love it and are really taking off! Also works flawlessly with the VIVOSUN E42 controller which is really nice!
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