Photon mosquito repelling lamp is an innovated product for preventing the Dengue fever arised by mosquitoes infection spreading.It uses the newest photon technology to repel mosquitos by light.it have been proved in many countries that where photon repellent is,there is not mosquitoes at all. Spec. Item No,LD3U -25W active space:9-12m2 lamp base:E27,E26/B22 lifetime:3000hours energy saving rate:75% no harm at all do you wanta learn more details about this product? please visit our product website www dot cn-sourcelink dot com/photonmosquitorepellent dot html welcome to do business with us for this product.