The D’SQUARE UV-C Disinfection System launched have Ultraviolet-C light generated by LIGHT EMITTING DIODES & PHILIPS UVC tubes are effective in reducing the SARSCoV- 2 virus present on the surfaces of items.UV energy is electromagnetic radiation with a wavelength shorter than that of visible light, but longer than soft x-rays.  All UV ranges and bands are invisible to the human eye.UV-C (short-wave; 280 to 200 nm): the most effective wavelengths for germicidal control. Use of ultraviolet (UV) lamps and leds systems to disinfect surfaces, room air, and airstreams dates to about 1900. Early work established that the most effective UV wavelength range for inactivation of microorganisms was between 220 to 300 nm, with peak effectiveness near 265 nm.UV-C energy disrupts the DNA of a wide range of microorganisms ,rendering them harmless UV-C lamps are low-pressure mercury lamps that emit UV energy at 253.7 nm, very close to the optimal wave length. UV-C led lamps emit UVenergy at 265 to 280 nm very effective to break micro organisms.