Specifications: 1) 3U (V12, 20W/25W) 2) Function: repelling mosquito, effectively limit the diseases such as dengue, fever, malaria and encephalitis B that are spread by mosquito 3) Harmless, non-toxic, non-radiation, protecting the environment 4) Safe and reliable to use 5) Can be installed in any places at home as required 6) Quality: electric-saving 70% 7) Lifetime: 3,000h 8) Complies with the national IEC safe standard Outer packing: 1pc/ctn The work principle of product is like this: As we know,insect vision is very different from human's. The study indicate that insects are attracted to light in the UV part of the spectrum,in opposite way,they should feel uncomfortable in certain part . base on this, Our engineers made out a yellow luminous pigment which is coatd on the inner of the glass bulb can cover the UV radiation when it turns on,and in the meantime a special light source of an illuminating wavelength was given off to drive mosquitoes away.