describe: 1. Effective strong ultrasonic signal to scare dogs, cats, wild boars, mice, birds and other animals away from gardens or patios in your area. 2. Safety and environmental protection: no chemical components will harm human health. A passive infrared sensor (PIR) detects motion and triggers. Ultrasonic speakers emit sounds that people can't hear but chase common outdoor pests. 3. Energy saving: solar powered cordless charging, high efficiency, energy saving and low power consumption. Windproof: Usable in almost all weather conditions all year round. 4. Simple installation: install it on the ground using the prongs provided or hang it on the wall through the rear slot (direct sunlight is recommended) 5. The range of ultrasonic driving sound waves exceeds the range of human hearing and will not produce noise pollution. Package Contents: 1 * Solar animal repeller BAZHOU