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The ROI-E420 is the perfect balance between energy efficiency and performance

From the minds of both Grower's Choice & TSL Horti Tech, the same pair that brought out the ROI-E680, one of the best LED Grow Lights in the industry. Introducing the ROI-E420 full spectrum, compact horticulture LED fixture. Utilizing Grower's Choice proven 3K full PAR spectrum, this LED is perfect for professional cultivators and grow enthusiasts alike, who require a powerful LED fixture with a lower profile frame. This new, sleek LED is also perfect for the hobby growers or entry level professional cultivators who want to maximize their yields while working with limited space.


Whats Included

  • ROI-E420 LED Grow Light
  • 9' Connecting Cable
  • 1' 120 Volt - M25 Plug
  • Information Page
  • 120/240 Volt Adaptor
  • User Manual
  • Rope Ratchet


This fixture performs best using a 4ft x 4ft veg and 3.5ft x 3.5ft flower footprint, perfect for compact gardens and cultivation tents with a Recommended Hanging Height of between 6" and 24".


Full Phase Spectrum

This fixture delivers the entire spectrum of light to your plants, giving them exactly what they need to grow big and beautiful. Grower's Choice famous GC-3K Full Phase Spectrum for will bring your plants to new heights with the best possible LED diodes available.


High Performance & Energy Savings

For growers with strict requirements on power, this fixture cranks out 1090 umols/s. At 420 Watts of power, that gives this system an PAR efficinecy of 2.6 umols/J. With dimming capabilities and a voltage range of 120 Volts - 277 Volts, you truly can find the perfect amount of power output and consumption. The ROI-E420 truly gives you a return on investment with up to 40% energy saving & 40% less HVAC requirement.


Compact Size

This fixture is approximately 3 ft in length (35.3") & width (34.6") making it a great fixture for 4' x 4' or 5' x 5' grow tents for the hobby grower and can even fold when not being used to reduce its storage size in half. Even with the compact size, the ROI-E420 still packs enough power to be used in commercial applications.


Onboard Dimming

You can set the ideal intesity at any time for optimal plant growth without the use of an external controller. If you prefer an external controller, no problem. This fixture is compatible with most lighting contollers including Growers Choice Master Lighting Controller. With the GC master controller, cultivators can set the fixture to turn off and on at desired times, program sunrise/sunset settings, program dimming options and set protective fail safes to dim or turn off fixtures in the event of excessive room temperatures, such as in the event of HVAC failure, potentially saving gardens from heat damage.


Growers Choice Master Lighting Controller (SOLD SEPERATELY)

Grower’s Choice digital lighting controller enables the grower to control up to 200 fixtures. It is compatible with all GC-315 CMH, GC-630NS CMH, GC-1000 DE fixtures, ROI-E420 & ROI-E680 LED grow light.


This dual-channel controller allows daisy chaining up to 100 fixtures per zone. En-abling complete control of your growing environment with timed on/off switching, sunrise/sunset, and precise temperature readings with dual thermal probes and thermal-threshold auto dim-shutdown for additional protection.

Grower's Choice ROI-E420 LED 420W Grow Light

$699.00 Regular Price
$499.00Sale Price
  • Brand Growers Choice
    SKU GC-ROI-E420
    Weight (lb.) 19.4
    Prop 65 No
    Length (in.) 35.3
    Width (in.) 34.6
    Height (in.) 3.2
    Warranty 5 Year
    Lead Time This product ships in 1-2 Business Days
    Lighting Type LED
    LED Light Spectrum Full Spectrum
    LED Fixture Type Multi-Bar
    LED Features Manual Dimming Knob, Dimmable *with Controller
    Est. Electricity Cost /mo $18.14
    Exact Watts 420 Watts
    Suggested Hanging Height 6" - 24"
    LED Diode Type Osram Top Bin Diodes
    PAR Efficiency 2.6 umol/J
    Total PPF Output 1090 PPF
    Power Factor >90%
    Voltage 120-277 Volt
    Amps 4.0 Amps @ 120 Volts, 2.5 Amps @ 208 Volts, 2.0 Amps @ 240 Volts, 1.8 Amps @ 277 Volts
    Power Cord(s) Included 120 Volt Cord with 240 Volt Adapter
    Power Cord Length 10 ft.
    Coverage Area Veg: 4' x 4'; Flower: 3.5' x 3.5'
    Grow Light Certifications IP65 Rated, ETL Listed
    UL Listed No
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