... good function and hot sale 220V power indoor electronic ultrasonic ware mosquito repellent Principles:Making use of Ultrasonic principle,disturbing mouse ... can't bear and run away.The using range:Home,restaurants,supermarkets,farm,storeroom,kindergarten,office and other places which are ... .Output Steady-Inverter ultrasound.Green Led works. indoor electronic ultrasonic ware mosquito repellent