【Effective and Powerful Ultrasonic Cat Repeller】Powerful ultrasound combined with siren. Equipped with an infrared motion sensor (PIR sensor) and a flashing light, which allows the repeller to be activated automatically once animals enter the protected area, humanely scares away unwanted wild animals, protecting your life from disruption. Humane and environmentally friendly. [Solar Powered & Waterproof] The ultrasonic cat repeller is equipped with a solar panel on the top and can be charged by solar energy. Solar charging is such a cost-effective and eco-friendly way that can also save you a lot of money. Waterproof design allows the device to withstand rain, snow, ice and wind, allowing it to work year-round and in virtually any weather conditions. 【Higher Sensitivity and Wider Detection Area】 The motion sensor covers a 110-degree angle left and right, as well as a 50-degree arc up and down, up to a maximum monitoring distance of 8m and a coverage of up to 230 square meters.