VB8 LED Model 2.4

The VB8 LED is designed to outperform the competition with additional diods and a tuned spectrum to deliver exemplary results. This 660W LED has a full spectrum array specifically engineered for vegetive and flower cycles that require high μmol performance at a lower clearance to the canopy.

The VB8 is ideal for both large commercial facilities as well as stand-alone hobby use. A quick and easy install action with the ability to daisy chain several fixtures in a row. IP65 certified for damp locations.

Price: $949.00

Buy 10 for $924 each and save up to 2.6%

Buy 25 for $899 each and save up to 5.3%

Buy 50 for $874 each and save up to 8%

Buy 100 for $849 each and save up to 11%

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1. Product Details

0 - 180 degree foldable

OSRAM top bin diodes

Daisy-chain connectors UL listed and IP65 rating

Ratchet ropes with metal rollers

Built-in ultra efficient drivers using Japan core components

NANO coating, better waterproof, higher light transmission

2. Spectrum and Efficacy

  • 3200K CCT
  •  660W real power
  • 2.4 μmol/J efficacy
  • 1742 μmol/J PPF

The specially deployed full spectrum fills the negligence of the main photoreceptors and pigments outside the 660nm and 450nm range, and it is suitable for reproduction to aging in indoor environments. The overall color temperature of FSM’s full spectrum is controlled at 3200K, which increases the radiant energy of red light at 660nm wavelength in white light. It provides a beautiful working environment and a more realistic color reproduction degree at a CRI level of 85.

3. Technical Specs

Rated Mains Voltage 120-277V AC
Voltage Range (+/-10%) 100-277V
PPF 1742 µmol/s
Efficacy 2.4 µmol/J
Input Power 18.40A
Input Power 670W
Output Voltage 33
Output Power 607.2W
Min Power Factor 0.9
THD less than 20%
Crest Factor 0.99
BTU 2278
Mains Frequency 50 / 60Hz
Dimming Type 0%-100%
Dimmable 0-10V Controllable
Ambient Temperature 75°C/167°F
Max. Temperature 75°C/167°F
Relative Humidity 98%
Color Temperature 3200k
Color Rendering Index 88
Finishing Mounting Height 6”-12” to top of Canopy
Emitter Cooling Passive / Extruded Case
Light Distribution +/- 5% Cooling 125º
Waterproof Rating IP65 for Damp/Wet Conditions
LED Lifespan (90% of Life) 55,000+ hours

4. Dimming Total Control

Option 1: 0-10V dimming cords, it can work with any 0-10V dimming controller.

Compatible with most lighting controllers, including Grower’s Choice Master Lighting Controller.

Option 2: Your controller needs a M19 connector cord and it works with the light directly.

Alternatively if your master controller uses a RJ12/RJ14 interface, we can provide a
M16xRJ14 adapter cord.

Diming Cord
Dimming Connection wire
AC Connection wire

5. Lumen Maintenance Projection

Testing Standard IES TM-21-11
Sample size per tenperature 30
LED drive current used in the test 150 mA
Test duration 13,000 hours
Test for projection 8,000 to 13,000 hours
Projection Data I II III
Case temperature Ts = 55 °C Ts = 85 °C Ts = 105 °C
α 1.818E-06 4.821E-06 4.227E-06
b 1.004E+00 1.019E+00 9.957E-01
Reported L70 >78.000 hours 77,955 hour >78,000 hours

6. Photon Flux Distribution

Measured in isolation (no adjacent grow lights, no reflective walls) at 100% light intensity with fixture centrally hanging at pre-determined height above a 4’x4’ grow area.


ppfd map vb8 at 6″

ppfd map vb8 at 6

ppfd map vb8 at 12″

ppfd map vb8 at 12

ppfd map vb8 at 18″

ppfd map vb8 at 18

ppfd map vb8 at 24″

ppfd map vb8 at 24

ppfd map vb8 at 30″

ppfd map vb8 at 30

ppfd map vb8 at 36″

ppfd map vb8 at 36

7. Dimensions and Installation Precautions


dimensions mounting
Length 1067mm 42.01"
Width 1003mm 39.49"
Height 129mm 5.08"
Weight 16kg 35.3lbs
  1. Leave at least one inch of space between the fixture and the mounting area for optimum performance and life span.
  2. Wear protective eyewear when looking directly at the diodes to prevent eye damage.
  3. Only handle, clean, or move fixture when it’s unplugged or cool.
  4. Keep the light structure free of dust, debris, or buildup to ensure optimum performance and life span.
  5. The diodes are easily damaged so do not touch or apply force.
  6. Don’t use cloth or chemicals to clean the diodes so they don’t scratch or break. Use low-pressure air or water to remove dust and debris.

8. Installation

1 . Pendant

1.1. Install the steel cables on the beam (picture 1)

1.2. Use the steel cables to adjust the mounting height of the fixture (picture 2)

2. Open the folded light (if applicable)

open the folder light

3. Fix the steel cable in the triangle hook on the light

fix the steel cable

4. Installation

Assembled Light
Assembled Light Image

To plug in the cord, align the terminals of cord and plug in.

Assembled Light - plugin in (1)

To plug in the cord, align the terminals of cord and plug in.



9. Daisy Chaining & Breaker Load Planning

To save space and use only one outlet to run several lamps you can “daisy chain” to minimize the number of cords in your space. If you plan to use a controller, connect the connections from the controller to the fixture and then connect the Daisy Chain Controller Cable from fixture to fixture.

– up to 2 VB8 fixtures may be connected in a series at 120V AC
– up to 5 VB8 fixtures may be connected in a series at 277V AC


70% Max Load for Circuit Breakers, Limit is due to Inrush Current in High End Commercial LED fixtures

10. VB8 Limited Warranty

This limited warranty does not cover improper installation or removal, or damage resulting from an improper installation or removal that was not performed by a licensed electrician, deterioration or malfunction resulting from any alteration, modification, unauthorized attempted repair, improper or unreasonable use or maintenance, misuse, accident or neglect. Customers are responsible for proper circuit breakers and proper wiring for their own protection.