All FOHSE fixtures are supplied with a 3 Year Warranty

The Ultimate Commercial Light Fixture

The A3i model is a 1500-watt industrial LED light designed for high-bay, single-level environments and is built to withstand intense grow conditions‚ from hitchhikers such as mites and aphids to full submersion in a meter of water. Made with diodes from the industry-leading manufacturer, the A3i is Fohse's answer to the low output and poor canopy penetration of the cannabis industry early-generation LED systems. It has swiveling light bars to achieve maximum canopy penetration via cross illumination to neighboring grow plots.

The A3i provides between 50,000 and 110,000 hours of light which is up to 12 years worth of growing.

The A3i also boasts some of the highest photosynthetic photon efficiency levels of any LED grow light worldwide, with an abundance of diodes to prevent any diode from becoming overclocked.

The system is safety-conscious as well, with an average surface temperature of 115 degrees Fahrenheit - approximately the temperature of a sink full of dish water at full heat and three layers of protection against electrical overload scenarios.

Unprecedented Canopy Penetration in Commercial LED Grow Lights

Early generation LEDs failed the cannabis industry due to low output + poor canopy penetration. The A3i is the most powerful, efficient and overall best grow light in the world. Swivelling light bars achieve maximum canopy penetration via cross illumination to neighbouring grow plots. 

Innovative Heat Management in Commercial LED Grow Lights

Cooling a traditional HPS setup can be costly, especially when putting more light into the environment. The A3i produces 60% more light per BTU than an HPS system, significantly reducing the strain on your cooling systems.

Unrivalled Efficacy

The A3i is capable of some of the best photosynthetic photon efficacy figures of any LED grow light for cannabis in the world. Its secret? An abundance of diodes so no diode is 'overclocked', as well as our patent-pending thermal management. Cool diodes are efficient diodes. With the A3i, you get the most efficient and the best grow light system in the market.

Safe to handle

It's no secret that the heat from typical HPS grow lamps is a safety hazard. At full power the A3i is about as hot as a sink full of dish water.

Dustproof and watertight - IP67 rated

Your grow environment isn’t the friendliest place for sensitive electronics. That’s why the A3i grow lights for cannabis can withstand the intense conditions of your grow. It’s impervious to hitchhikers (dust, mites, aphids, spores). It can even withstand full submersion in 1 meter of water.


Detailed Specifications


Wattage and Power

  • Wattage at Full Power = 150ul cull l0 (+/-30 watts due to common variability in driver consumption. This is measured at the plug and NOT at the internal power supply like some manufactures claim. This means that 1500 watts is actually what is pulled from the outlet) 
  • Voltage Options - Low Voltage Model accepts 100v up to 277v & High Voltage option accepts 250v up to 480v
  • Amperage at Full Power (Amps = Watts * Volts) 12.5A @ 120V; 7.2A @ 208V; 6.25A @ 240V; 5.41A @ 277; 4.32A @ 347V; 3.1A @ 480
  • Amperage at Full Power (Amps = Watts * Volts) - 12.5A @ 120V; 7.2A @ 208V; 6.25A @ 240V; 5.41A @ 277; 4.32A @ 347V; 3.1A @ 480V


  • Efficacy (PPE) Standard = 2.8PPE at Max Power 3.0PPE When Dimmed to 50% 
  • Standard Average Max PPF Output = 4,200 uMols


  • 301H 3500K diodes from Samsung (This is a full spectrum white diode that generates the warmer colors)
  • 301H 6000K diodes from Samsung (This is a full spectrum white diode that generates the cooler colors)
  • Hyper Red 660nm diodes from Osram
  • Far Red 730nm diodes from Osram


  • Dimmability - Dims down to 30% in 1% increments
  • Power Cord Length - 3.05 Meters
  • Communication Cable Length included with each light is 3.05 Meters
  • Power Supply - Inventronics


Brand FOHSE Lighting

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