... system 2. Unique heat dissipation, optics, structure, power design, pure aluminum, led temperature below 40℃. 3. 20% PAR and design idea higher ... the tradition HPSL and MHL, that light effect is just 8% - 10%. 3. These LED grow lights use only about half ... system: Aluminum shell, pure aluminum frame and sink, quiet fan make up better cooling system, one day later, that led grow light temperature is ...