Product . Safe Ultrasonic: The ultrasonic solar repellent is effective against rodents such as cockroaches, rats, snakes and other pests. It stimulates the central nervous system of rodents by emitting sound waves of 400-1000 Hz every 30 seconds emits and vibrates. It is very effective at eliminating moles and rats and will not harm humans, pets or poultry, making it ideal for gardens, farms and greenhouses. Energy Efficient & Waterproof: Solar powered means no extra battery needed and lots of energy can be saved. Installation is completely wireless and hassle-free. It is made of high quality materials and environmentally friendly manufactured, waterproof according to IP65 and does not stop even in the rain. Safety and protection: made in Durable ABS plastic and corrosion-resistant aluminum make it safe and chemical free. No radiation, chemicals or odors, safe for humans and our pets. The green outer shell leaves it easy to hide among the plants and can also be used as a garden decoration. Large effective working range: the device works in a circle of a radius of about 15 meters and covers an area of 650 square meters. For best results, we recommend installing 2 units per 100 feet in high traffic areas. This effective and convenient outdoor animal repellent works continuously 24 hours a day. 24 hours a day, 24 hours a day. Ideal for outdoor areas such as gardens, yards, patios, garages, driveways, decks, farms, ponds and attics. great for protecting your building Note: The data is all measured manually, please allow 1-3cm error, due to the difference in light and display, there will be a certain color difference, l actual item received shall prevail.