Mars Hydro UR45 LED Grow Light For UV & IR SupplementThe UR45 supplemental LED grow light bar: set has 2 bars, 192 LED diodes, and a total output of 45W, mainly used to supplement the UV and IR radiation when using white full spectrum LED grow lights in indoor growing. UV Grow Light Ultraviolet To Maximize Your Yield: Supplemented to grow lights, UV (365 420nm) on UR45 supplemental light bars can induce larger leaf areas and promote light interception, thus significantly increasing plant production.