If you hate too many insect, use this tool to handle them.The electronic insect repeller is convenient, environmentally friendly and efficient.It can emit physical sound waves, and insect mice can escape because they can't stand it, thus achieving the purpose of drive away.This sonic frequency only achieves the purpose of driving insects, and it will not harm the human body.Plug design plug and play,and you just plug it into the socket and it can works.Ultrasonic pest repeller adopts the latest chip to repels bugs by emitting an ultrasonic wave of different frequencies. Such as mosquitoes, spiders, cockroaches, mice, fleas, etc,The dual ultrasonic work simultaneously to disorientation ate the hearing and nervous system of pests to drive them away from your home. For: Insects, Mosquitoes, Mice, Spiders,Rats, Bugs, Ants, Spiders, Roaches, Fleasif you keep a hamster as a pet in your home, do not use this pest control repeller. Specifics:Material: ABSQuantity: 2/4/6pcsSize:9*6*3cm/3.54*2.36*1.18inColor: BluePlug Type: EU Plug/UK Plug /AU PLUGPower: 5WVoltage: AC90-220(V)Ultrasonic Frequency: 22~65KHZEffective coverage area: 100 - 150 square metersPackage includes :1/2 pcs Electronic insect repeller