Features: High-tech electronic product The electronic insect repeller is a new type of high-tech electronic product, which uses a sweeping frequency high-frequency ultrasonic circuit to generate 20~55KHZ sweeping ultrasonic waves. Scientific research has shown that mosquitoes, cockroaches, mice, mites and other pests in the sound wave range of this frequency, their endocrine system and physiological functions will produce flocculation, thus playing a driving role, ultrasound n has no effect on the human body and other Harmful animals, because more than 20KHZ sound waves cannot be heard. Ultrasonic Wave Variable frequency ultrasonic waves and other technologies have been used to hunt various pests within the jurisdiction. Microcomputer chips and electronic ICs are used. Small and exquisite appearance, easy to operate. High quality The ultra-low frequency electromagnetic wave emitted by this product can effectively penetrate the wall and will not reduce the use effect due to blocking by