[Ultrasonic Technology] This ultrasonic insect repellent uses the latest dual-chip technology to emit powerful ultrasonic waves that effectively disrupt the auditory and nervous systems of pests such as rats, spiders, flies, cockroaches, ants, and mosquitoes, causing them discomfort and driving them away. [Easy Installation] Simply plug the ultrasonic device into a power outlet. It starts working as soon as the indicator light turns on, with no complicated setup required. [Safe for Children and Pets] Radiation-free, chemical-free, odorless, and silent, this device only repels pests and rodents, posing no danger to humans or pets. [Large Coverage Area] It can cover an area of up to 100 square meters, making it ideal for homes, warehouses, offices, gardens, hotels, and other places. It helps control insects, rats, mosquitoes, wasps, ants, spiders, coccids, bed bugs, etc. [Silent and Energy Efficient] This ultrasonic insect repellent uses unique low-frequency ultrasonic technology to repel insects. Silent, it consumes only 3 to 5 watts.