[2020 Improved Ultrasound Technology] This ultrasound protection device continuously transmits variable ultrasound frequencies from 24 to 150 kHz. Insects and rodents cannot adapt to this. This effectively repels mice, mosquitoes, spiders, insects, ants, flies, cockroaches, fleas and other pests from your home [150 Square Meters Large Range] The ultrasonic pest control can cover an area of up to 150 square meters (1600 square feet). In 2-4 weeks you see an obvious effect. Perfect insect repellent for indoor areas such as home, warehouse, office, theater, restaurant, supermarket, hotel etc. [Environmentally Friendly and Harmless] The ultrasound only affects pests and rodents, is 100% safe for the human body or pets. Our mouse made of ABS material, brings no radiation, no toxic chemicals and no noise, is energy-saving and environmentally friendly [With Display Easier to Use] Plug and play, easy to use. Simply plug the pest control device into any socket (at least 20-50 cm above the