1、Safe, non-toxic, tasteless, and efficient, and has been widely used. 2、Electronic insect repellent is a new type of high-tech electronic product, which uses high-frequency sweeping ultrasonic circuit to generate sweeping ultrasonic waves of 20 to 55 KHZ. 3、Scientific research has found that mosquitoes, cockroaches, mice, mites and other pests in the range of sound waves of this frequency, their endocrine system and physiological functions will produce flocculation, thus playing a driving role, ultrasound has no effect on the human body and other animals Harmful, because more than 20KHz sound waves can not be heard. 4、Widely used in homes, warehouses, shops, hotels, hospitals, offices, computer rooms, gardens, hotel grain stores, etc. 5、Product effective range: 80-120 square meters. 6、Safe, non-toxic, tasteless and efficient, and has been widely used. Electronic technology can create variable ultrasound intermittently and alternately. 7、Say goodbye to harmful poisons, dangerous chemicals spraying and traps. This ultrasonic pest repellent is 100% safe and effective. Ultrasonic will not influence the daily life of humans and pets. 8、Widely used in homes, warehouses, shops, hotels, hospitals, offices, computer rooms, gardens, hotel grain stores, etc. For serious pest problems, we suggest installing 2 or more devices in one room. 9、Effective range of the product: 80-120 square meters. Make sure there are no barriers such as curtains or cabinets covering the repellent. This machine can lustrate house mouse, black beetle, mosquito, flea, fly, cricket, ant, wood ant, etc. So we can call it electronic lustrate mouse machine, electronic helminthes machine etc. The ultrasonic that sent out from this machine is far away from hearing range of human being. They will not do harm to human being and pets. Also will not have affect on house machine. Features: Safe, non-toxic, tasteless, and efficient, and has been widely used. Electronic insect repeller is a new type of high-tech electronic product, which uses sweep frequency high-frequency ultrasonic circuit to generate sweeping ultrasonic waves of 20 to 55KHZ. Scientific research has found that mosquitoes, cockroaches, mice, mites and other pests in the range of sound waves of this frequency, their endocrine system and physiological functions will produce flocculation, thus playing a driving role, ultrasound is no effect on the human body and other animals Harmful, because more than 20KHZ sound waves can not be heard. Widely used in homes, warehouses, shops, hotels, hospitals, offices, computer rooms, gardens, hotel grain stores, etc. Product effective range: 80-120 square meters. Specifications: Plug: EU, US (optional) Power: 5W Material: ABS Voltage: AC 90V-250V Frequency: 50-60Hz Application Area: 80-120 Square Meters Ultrasonic Repellent Frequency: 22-65KHz Package Size: 96 * 66 * 56mm / 3.78 * 2.60 * 2.20n Package Weight: 64g / 2.56ounce Package List: 1 * Ultrasonic Pest Repeller 1 * Ultrasonic Pest Repeller