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The Growers Choice ROI-E420 is a compact yet full spectrum LED ideal for small indoor grow spaces.
It uses the same 3K full PAR spectrum of Growers Choice, which makes it perfect for seasoned growers and beginners alike.
The ROI-E420 has a lower profile frame, making it perfect when used in limited spaces.
The ROI-E420 provides up to 40 percent savings in energy but can cover up to 16 square feet inside grow tents. With 420 watts of power, the ROI-E420 gives you a PAR efficiency of 2.6 umols/J.
If you have an existing lighting controller, chances are the ROI-E420 will be compatible with your current device.
But if you want full control, you can spring for the Growers Choice Master Controller to set the light to switch on and off during particular times or conditions to protect your plants. Controlling the different parameters saves your plants from heat damage.
The ROI-E420 uses a low-profile frame, but capable of lighting up to 16 square feet of space..
Full PAR Spectrum
The ROI-E420 has the same 3K Full PAR spectrum that comes standard for Growers Choice.
Compatible with most controllers
The ROI-E420 is compatible with most controllers in the market. But you get the full functionality when using the Growers Choice Master Lighting Controller.
Designed for Industry Standards
You’re assured of quality, as the ROI-E420 meets grow light industry standards, including ETL-listing, and Horti DLC certified for energy efficiency.
Add Master Controller
Get the best supplement to your Growers Choice lighting system through the Master Controller.
It features a two-channel programmable module that gives you control over two (2) separate growing areas.
The Master Controller uses a user-friendly LCD touchscreen for navigation. It uses a clock with a timer that allows you to set it to slowly dim or brighten your lights to simulate sunrise and sunset.
GC-3K Full Phase
Max Input Power
Fixture Dimension | Weight
35.3”L x 34.6”W x 3.2” H / 19.4lbs 89.6cm L x 88cm W x 8.1cm H / 8.8kg
All sales final. The Grower's Choice ROI-E420 comes with a five year warranty.
This warranty does not apply to second-hand lamps or lamps purchased pursuant to casual sales. All warranty claims must be directed to the retail store where the lamp was purchased.
Except as provided in this warranty, neither Grower’s Choice makes any representation or warranty of any kind, express, implied or statutory, as to any matter whatsoever, including without limitation merchantability, fitness for a particular purpose, non-infringement or otherwise. Grower’s Choice hereby disclaim any such warranty. Without limiting the foregoing, Grower’s Choice do not make and shall not be deemed to have made any warranty as a result of any testing, sampling, or similar analysis that either may perform.
Grower’s Choice shall not under any circumstances be responsible for any loss or damage, indirect, special, ordinary, exemplary, consequential or otherwise, arising out of the purchase or use of the lamps, except as expressly provided in this warranty. Under no circumstances shall Grower’s Choice’s liability of any kind exceed the purchase price of the lamp in question.