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Free Shipping and No Tax On Continental US & Canada Orders
Free Shipping and No Tax On Continental US & Canada Orders

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

Save up to $36.00 Save $36.00
Original price $545.00
Original price $520.00 - Original price $545.00
Original price $545.00
Current price $509.00
$509.00 - $554.00
Current price $509.00

☑️ Request a Quote - Bulk Discounts for Large Grow Operations.

✔️ 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.

Style: WF840N
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 840W-LED-GROW-LIGHT
New ParfactWorks LED Grow Light Solutions 840W

Full Spectrum Reading


Model No. WF840
Power Draw 840W
Hps Equivalent 2000W
LED Source Top-Bin Samsung 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
Emitting Color Full Spectrum including 3000K/5000K /RED 660nm /UV 395nm /IR 730nm
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 13 reviews
Christopher Lanzotti
never received light

parafact said shipped, UPS NEVER RECEIVED 14 DAYS LATER/

We indeed shipped the light straightway once the peyment received, but UPS lost the package and they never compensate us for the lost package, under such a condition, WE HAVE SHIPPED YOU A NEW LIGHT ALREADY WITH NO CHARGE. Thanks

Really well done

So far so good! Received the light faster than expected… it is very solid. Easy to install due to the folding feature. Very solid coverage in 4x4 on par meter excited to see how everything responds!
Update: a week and a half later plants are very happy

P.s. do all models show wingflex wf800 like this as well?

Works good so far

This WF840W bar fixture works good so far, will see how it works for flowering and will update later.

So far so good

So far so good, will update once my first grow round done.

Service was awesome !

I originally purchased 2 of RA2000 from Amazon. The service was awesome! When i found the new fold bar ,i purchsed one through Parfactworks website.

Great results

I bought the wf840 liked it so much , I've bought 2 more, plan to buy 5 more, can only buy 1 every 2 weeks.

jose vera
My plants are loving WF840 as well.

My plants are loving WF840 as well. Great customer service and shipped on time. Thanks guys for a great purchase.

Shines brightly

The bars light came in one day early which was fantastic timing! This led grow light is easy to setup and shines brightly!