660nm is visible light, referring to red light with a wavelength of 660 nanometers. When 660nm light is emitted from a light source, our eyes are able to see a distinct reddish glow. The wavelength range of red light is between 620nm and 750nm, with 630nm 640nm 650nm 660nm all showing red light.
LED lights can emit 660nm red color light, SMD2835, SMD3528, and SMD5050 can do red light. Using these low voltage DC 12V or 24V deep red 660nm led light strips for light therapy can promote cell regeneration and repair, anti-inflammation, improve blood circulation, reduce pain, and promote wound healing. LED 660nm red light therapy has a positive effect on both skin health and mental health. In plant growth lighting, red light around 660nm has a significant effect on photosynthesis, especially under certain 500nm blue light conditions, which can promote plant growth and flowering. Sometimes 660nm mixed with 3000K/3500K warm white light is also chosen to help vegetable growth.
The deep red 660 nm long wave red light has a high penetrating power. Compared to the invisible infrared 850 nanometers, 660 nanometer red light is lower in energy and has a milder effect on living organisms. The wavelength of 640nm-670nm deep red light is longer than 620nm-630nm normal red light, so 660nm red light is good for plant growth and medical treatments. 660nm deep red led strips provide uniform illumination coverage and are suitable for lighting applications that require uniform lumens over a large area.