Growers Choice TSL LED ROI-E420

Growers Choice ROI-E420 LED with 1,090 µmol/s and GC-3K Spectrum

The Growers Choice ROI-E420 outputs 1,090 µmol/s PPF at 2.6 µmol/J efficacy from 420W on 120-277V AC. Built as a collaboration between TSL Horti Tech and Growers Choice, this fixture uses Osram top-bin diodes tuned to the GC-3K full-phase spectrum (3000-3300K) with enhanced 660nm red. The overall color temperature sits in the warm range that favors flowering, but the balanced spectral distribution supports full-cycle use from propagation through harvest at mounting heights of 6-24 in depending on application.

TSL Collaboration LED with IP65 Rating and 54,000-Hour Lifespan

Onboard dimming and compatibility with the Growers Choice Master Controller and most 0-10V controllers give growers intensity control across every stage. The fixture measures 35.3 x 34.6 x 3.2 in at 25 lbs with passive thermal management, 120° light distribution, and an L90 lifespan exceeding 54,000 hours. Certifications include IP65, CE, UL 8800, UL 1598, and DLC, with a 3-year standard warranty. The package ships with a 9 ft connecting cable, information page, and user manual.

Key Features

• 1,090 µmol/s at 2.6 µmol/J: Delivers strong photon output efficiently at a lower wattage point for mid-size canopies
• GC-3K Full Phase Spectrum: Osram diodes tuned to 3000-3300K with 660nm red support every growth stage without spectrum switching
• IP65 + DLC + UL 8800 Certified: Waterproof, rebate-eligible, and safety-compliant for commercial and greenhouse environments
• Passive Thermal Management: Fanless design eliminates noise and mechanical failure points while maintaining reliable cooling
• L90 > 54,000 Hours: Extended diode lifespan reduces replacement frequency and long-term fixture cost

Technical Specifications