The Ultrasonic Mice and Rat Repellent is a highly effective solution for keeping your home free from rodents and insects. With a coverage area of 60-80 square meters, this device can effectively protect a large room. What sets this repellent apart is its multi-functionality. Unlike other similar products that only emit ultrasonic waves or electromagnetic waves, this device combines extremely low frequency induction field, ultrasonic waves, and infrared rays. This comprehensive approach ensures that pests are repelled effectively. One of the key features of this repellent is its frequency conversion capability. The device constantly changes the frequency of the three types of radio waves it generates. This prevents pests from developing adaptability and immunity to a fixed frequency, resulting in a more noticeable and long-lasting effect compared to other similar products. Rest assured that this repellent is safe to use around humans and pets. The ultrasonic pressure it generates is beyond the hearing range of human ears, causing no harm. Additionally, it does not interfere with household appliances, making it a convenient and hassle-free solution. Key Features: Coverage area of 60-80 square meters Multi-functionality with ultrasonic waves, electromagnetic waves, and infrared rays Frequency conversion for enhanced effectiveness Safe for humans and pets No interference with household appliances