Unique TechnologyOur Ultrasonic Pest Repeller has 4 unique smart working modes to ensure a wide and stable frequency range, improving the safety and effectiveness of the product. Stimulates the sensory and nervous systems of mosquitoes. The pests can then be effectively controlled and kept away from you. This will drive them out of your home, make them afraid to come near your home, and say goodbye to the traditional way of repelling rodents and insects. Easy to useUltrasonic mosquito repellent just plug it into the power socket, press the switch, the automatic intelligent ultrasonic frequency conversion destroys the living space of pests, there are 4 modes to adjust. The higher the gear, the stronger the frequency. Repeated cycles disrupt the auditory nerves of pests, effectively destroying those rodents More Safe for Child & PetsUltrasonic Pest Repeller is inaudible to humans and household pets, has no unpleasant smell, is safe for pregnant women and babies, and provides a safe living space for your children WIDE COVERAGE AREAOur Ultrasonic Pest Repeller can cover a maximum area of 100 square meters. It is recommended to install 1 device per room, ultrasonic waves cannot pass through solid materials and walls, so do not put furniture or any other objects in front of it and keep doors and windows closed to allow ultrasonic waves to work continuously