Take your grow to the next level with the ROI-E900LED Grow Light! Grower’s Choice is an American company with over 30 years of experience in grow light solutions, providing high-quality, high-intensity lighting for at-home and commercial growers. Happy Hydro's pick for 4' x 5' commercial grow spaces. Perfect for 5' wide tables  The Run Down: 4' x 5' bloom footprint, 1050 Watts, 2340-2600 μmol/s PPF, full spectrum, built-in dimmer, 120v-277v, 5 year warranty By far the most powerful LED in its class with a standard PPF of 2340-2600 umol/m2/s for professional cultivators who demand ultimate light output. The ROI-E900 was engineered with greater dimensions to provide more versatility and better canopy coverage, especially to the outer edges of 4’x5’ cultivation areas seen on 5' wide flood and drain tables.  This grow light is IP65 water-resistant rated, UL8800 certified, and Horti DLC certified for energy efficiency rebate eligibility. With unbeatable safety, reliability, savings and performance, the ROI-E900 is unquestionably the right choice for cultivators who demand only the best. FEATURES: 1050W 2.6 umol/j efficacy 2340-2600 umol/m2/s total light output  4'x5' coverage area for high intensity grow GC-3k Full Spectrum with 660nm deep red (Osram diodes) Onboard dimming function (10-100%) Even light distribution Fanless Design IP65 Waterproof, UL1598, and UL8800 certification 5-Year warranty TOTAL CONTROL: With onboard dimming function, growers can set the ideal intensity at any stage of plant growth for optimal photosynthesis activation. Also, it is compatible with most lighting controllers including Grower's Choice Master Lighting controller. EVEN LIGHT DISTRIBUTION: Precisely designed to deliver uniform levels of photosynthetic flux density, (PPFD). QUALITY COMPONENTS: Industrial grade manufactured with Osram Top Bin Diodes and ultra efficient driver. SPECIFICATIONS:   LEDs: Osram LEDs; 54,000 hour lifespan until L90 Spectrum: GC-3K Full Phase; Full spectrum with 660nm deep red PPF (light output): 2340-2600 umol/s PPF/Watt: 2.6 umol/j Beam angle: 120° Coverage area: 4' x 5' to 5' x 5' Mounting height: 6-24" above canopy Dimensions: 46.9” L x 59.5” W x 3.2” H Cooling: Passive Dimming: 0-10v Operating temperature: -20°C to +40°C Operating/input voltage: 110-277v AC; comes with 120v style plug and 240v adapter. Amperage: 120V: 8.9A / 208V: 5A / 240V: 4.5A / 277V: 3.8A Product weight: 55 lbs Additional details: IP65; Horti DLC; UL1598 and UL8800 Recommended for: Garage/Warehouse/Bedroom/Commercial/Basement Grows User Manual & Warranty: Click to view the Grower's Choice Warranty. Download the ROI-e900 user manual here. Available with Grower's Choice Master Controller: The ROI-E900 is controllable with the Grower's Choice Master Controller and is compatible with all quality master controllers. 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. Output Range: 10%~115% Number Of Ballasts Per Output: 100 Max Max Cable Length Per Group: 100M Control Voltage Outputs: 2 Group, A/B Temperature Sensor: 2 Group, A/B Overheat Protection: Yes Sunrise/Sunset Period: Yes Setup Ballast Type: 1000W/945W/750W/630W/600W/500W/315W Alarm Port: 2 Group, NO/NC ECM Port: 2 Group, NO/NCCE Input Voltage: 5VDC // 2000mA