The HM660 lighting system is a complete, pre-assembled LED grow light that lowers installation time with a wide range of wiring techniques and connectors. It runs with a passive cooling thermal management system, meaning your lighting systems last longer while retaining high light output levels. Longer lifespan means you can grow crops for many years without needing to replace the lighting system, reducing costs. Indoor plants grow best under full-spectrum lights, which replicate the natural spectrum of the sun. The HM660 Series, with an increased lifespan over traditional grow light sources, cultivates healthier, happier plants.