A laser therapy machine (also known as low level laser therapy or LLLT machine, cold laser therapy device, or photobiomodulation equipment) is a therapeutic device used in physiotherapy to deliver specific wavelengths of light energy to damaged tissues. The LCS 191 operates at 650nm wavelength with 200mW output power, providing optimal penetration for tissue healing.

Unlike surgical lasers, low level laser therapy does not produce thermal tissue damage. Instead, it stimulates cellular processes through photobiomodulation - the absorption of light energy by mitochondria to increase ATP production, enhance cellular repair, reduce inflammation, and provide natural pain relief.