Skip to content

ParfactWorks WF840 840W LED Grow Light Bar Full Spectrum (Manual and RJ11 Controllable)

Save up to 18% Save 18%
Original price $679.00
Original price $679.00 - Original price $828.00
Original price $679.00
Current price $554.00
$554.00 - $703.00
Current price $554.00

☑️ Request a Quote - for bulk purchasing.

✔️ Well manufactured with top bin hot-selling Samsung & Epistar Red 660nm, IR 730nm and UV395 diodes.

✔️ Full Spectrum white enhanced with Red, IR & UV.

✔️ Dimmable with RJ11 connection for massive control opperation.

✔️ Industry thickest heatsink guarantee you less heat resulting in longer lifespan.

✔️ No Moving Parts- Build-in driver, all in one design, save install time and labor cost.

✔️ Balanced Light Distribution - Uniform level of PPFD coverage for better canopy penetration.

Add 1 Intelligent Grow Light RJ11 Controller: No Thanks.
Availability: In Stock (Ships in 24-48 hrs)
US & CA Free Shipping: 3-5 Business Days
Industry Best Warranty: 5 Year

The ParfactWorks WingFlex LED Grow Light is foldable up to 180 degrees and waterproof IP 65 rated, making it versatile, compact, and easy to install in any grow conditions. The reflective cup design makes the lighting more concentrated, comes with 420W, 630W and 840W options.

  • High Quality Components: Industrial grade manufactured with top bin hot-selling Samsung & Epistar Red 660nm diodes optional, and UL certified driver.
  • Even Light Distribution: Precisely designed to deliver uniform levels of photosynthetic flux density (PPFD), The 8-bar configuration allows you to mount this light source in low rooms, on vertical racks, over rolling benches or even in tents. For maximum uniformity, hang the fixture 24-36 inches from the crop.
  • External Total Control: WF840 is dimmable and distributes broad, full-spectrum light anywhere from 0% to 100% while maintaining efficiency. Dim using the ParfactWorks master controller to create ideal lighting levels as needs change from veg to bloom for various crops throughout their growth cycles. You can connect up to 40 – 50 LED fixtures, using a setup with daisy-chained splitters.
  • Upgraded Full Spectrum: Idea for all growth stages- from veg to bloom. mixed with white, blue, red and UV,IR LED (3000K, 5000K, 660nm and IR 730nm & 395nm UV)
  • Large Yield & Increased Crop Quality: Expect up to higher yield and higher quality compared with the old blurple lights and/or HPS lights. Turn an average yield up to 2.5 g/W.
  • No Removable Driver Box, No-Fan Design: Build-in driver, all in one design, save install time and labor cost. The no-fan design means no noise or moving parts to worry about. Optimal heat dissipation while using a thick, sturdy 2.8 Inch (70mm) aluminum heatsink.
  • IP65 Waterproof: IP65 waterproof rating makes you worry-free grow in high humidity environment.
  • Flexible 180 Degree Movement: Slim design that is foldable up to 180 degrees, making it small, compact, and easy to install. Recommended for: Home grows, Commercial grows, Grow rooms, Tents.


ParfactWorks WF840W WF840N LED Grow Lighting PPFD PAR

Full Spectrum Reading

WF840W Full Spectrum Reading LED Grow Bar Light

Model No. WF840
Power Draw 840W
Size 1060mm (L) x 1060mm (W) x 45mm (H)
Hps Equivalent 2000W
LED Source Top-Bin Samsung LM281B LED
Mounting Height 12"-36" Above Canopy
Lighting Coverage Veg 7'X7', Bloom 6'X6'
Power Supply Build-in UL Driver
Input Voltage Autosensing 90-305V
Dimming Manual & Rj11 Control
Diodes Samsung LM281B 3000K 880PCS + 5000K 880PCS + RED 660nm 352PCS + UV 395nm 32PCS + IR 730nm 32PCS
Par Efficiency 2.8 μmol/j
PPF 2345 μmol/s
IP Rating IP65
Package Includes 1 x WF840 Grow Light Bar, 1 x 6ft Power Cord, 2 x Hangers with carabiners, 2 x Adjustable Yoyo Hangers, 1 x RJ11 Cable, 1 x User Manual
Cooling System Passive
Operating Temp 20°c ~ 40°c (-4°f ~ 104°f)
Lifetime >100,000hrs

ℹ️ 12"-36" above canopy

ℹ️ Light is too bright, don't look directly at the diodes.

ℹ️ Turn off the light before moving your light.

ℹ️ Indoor use only.

Q: Is it always discreet shipping/package?
A: Yes of course. We do discreet shipping for all orders. All our packages are shipped with plastic foam protection to keep it safe, and without any labels “grow lights” or brand name mentioned on the packages.

Q: What should I do if I cannot check out successfully?
A: Contact us at or online chat, we’re always ready to help.

Q: Do you ship to P.O. boxes?
A: Unfortunately, there are a lot of scammers out there, making it impossible for us to ship to P.O. boxes. Please provide a business or residential address when placing your order.

Q: Can I cancel my order?
A: If you would like to cancel an order, please contact us as soon as possible at
If your order has not yet begun processing, we can issue a full refund.
If it has been processed, you can get a refund minus shipping charges (both ways, even if the product had free shipping—we still have to pay for it, after all). A restocking fee of up to 25% may also apply.

Q: How long will it take for my order to arrive?
A: Most orders will be at your door within 7 business days of placing your order, but this can take longer in some instances.
We will keep you updated as processing and shipping progresses, but feel free to email us at if you have any questions about the status of your order.
We generally process your order within 24 hours of receiving it and it usually ships out within a day or two after that.
We ship most products using standard ground shipping via UPS, FedEx or the USPS. Depending on your location.

Q: How do I track my package?
A: An email that contains the tracking link URL will be sent to you once your order is shipped.

Q: What is your warranty? What should I do if my light has a problem?
A: We have a 5-year warranty(2 years free,3 years limited), Check our warranty details here
If you have a product issue, please contact us first at

Q: What can I do if I have a business plan?
A: If you would like to cooperate with ParFactWorks, please email us at

Q: What can I do if the Package Shows Delivered But I Don’t Have It?
A: Please follow the instructions below if the carrier shows package delivered but you don’t have it:
• Do check carefully the area around the shipping address and check with your neighbors or anyone who may have the package for you.
• If there is no clue found please call the carrier directly to report a missing package for the fastest logistics information, meanwhile, please email us about the issue as well ( ParfactWorks can not be held responsible for packages stolen from the delivery address so please be sure to ship to a secure location! If the items are lost, we need at least 30-45 days to investigate. So please keep following the logistics dynamics after we provide the tracking number, and do not miss out on our mail about the delivery notification.

Customer Reviews

Based on 32 reviews
Alex renier

You didn't fulfill anything yet I haven't received my light. The lights are great I already own several of them which is why I was will to wait when you said you had trouble with the Shipp company but I never got my light from you

Wingflex 800s

Both boxes came beat up and banged up. Opened first light upon delivery and hung up. Light works well so far. Second light I just opened today and it has a lose bar and screws missing to hold it in place. Idk if was never put together properly or if a result of crappy shipping method.

Parfactworks Wingflex WF 840 W LED

Absolutely fantastic. My delivery arrived much quicker than expected. Product up and running. All 100%. Light is very sturdy and came with all fixtures and fittings. Very easy to install. Will definitely use Parfact works again. Oh yes and the customer service was second to none. Would highly recommend.

Frank Silvia
Absolutely Phenomenal

Absolutely love these lights. I got the 2 pack of em, and both tents are just boomin now. Ty for the suggestion!!!


I have purchased multiple WF840 and could not be more thrilled. Their team has super responsive feedback and very fast shipping. Multiple runs and they do amazing everytime. Great canopy coverage and penetration. I recommend this model and a few other to my clients. The WF420 model is on our radar to test! HIGHLY RECOMMEND!!!!!

Michael pierce
Can't wait

Going to up my game with these lights

Clayton Howard
Great light!!

I'm loving this light so much! Great quality for affordable prices. I have used the ra1000 and ra2000 for parafactworks and had amazing experiences. I decided to upgrade lights and I am super happy with the results!

James Glass
Great light

I’m glad I purchased this light. And controller