ThinkGrow Adjustable spectrums 650w LED grow light fixture with remote power supply and controller, programable timing and internet accessable for smart phone control. Actual assembled dimensions: 44 x 48 x 3 4-panel LED+ Remote power supply Spectrum: 4-channels, fully adjustable. LED colors: 650nm,680nm,450nm,730nm, 4500K Wattage: Adjustable from 40  650 watts; Voltage: 120-277 volts @ 50/60 hz; PAR Watts: 518 REMOTE ballast (power supply), least heat in grow area, reduce airconditioner requirement Build in timing controller, and able to access internet for remote control by smart phone and laptop.