Indoor PestExpellerElectromagnetic Pest RepellerSpecification:*Worked by electromagnetic wave, transmitted along the wire then spread to the whole room (including the ceiling, because the ceiling usually have cord);*There are three kinds of plug( GS, UL, BS) to choose;*Effective onRats; Mice; cockroaches, ants, fleas, spiders, centipede;Our customers have also reportedpest repeller is effective against: Silverfish; Earwigs; Water bugs;*Equipped with a green lighting can be used at night,also can attract mosquito;*Effective range: 230 square meter;