Driver:External dimmable Mounting Height:? 6" Above Canopy Dimming:Knob dimmer, Dimension:24312"(60785.5cm) Input voltage: 100 240V AC Wavelength: full spectrum 380nm 780nm Frequency: 50Hz / 60Hz LED brand: High Tech SMD Chips Driver: UL Certified driver Service life: 500,000 hours Coverage area: VEG & Flowering footprint: 5X5FT=1.5MX1.5M Recommended for: Commercial grows Greenhouses Home grows (rooms and tents) Soil, hydroponic, aeroponic, or aquaponic systems Indoor farming or gardening.