Ultrasonic Solar Powered Motion Activated Animal Repeller About the product 1. This repeller is designed for permanent service allowing you to install it once and let it work 2. It is werath-proof allowing it to work all year-round and in virtually all weather conditions 3. It uses solar power to recharge the batteries so that it can always work 4. The Passive Infrared Sensor (PIR) detects motion and triggers the ultrasonic speaker emitting a tone that people cannot hear but chases away common outdoor pests like dogs, cats, deer, raccoons, mice, skunks, squirrels and more. 5. This solar animal repeller is a safe and humane way to keep unwanted animals away. 6. Ultrasonic Frequency: 40,000Hz 7. Coverage Area: 30 feet @ 110 degree=2,425 square feet 8. Power Supply: 4 x AA NiCD rechargeable batteries Cautions 1. Allow the animal repeller to operate continuously for best results 2. Do not immerse repeller in water 3. Do not cover-up the PIR sensor 4. To clean the repeller, use a damp-soft cloth and mild soap with water. Do not use harsh chemicals or abrasive cleaning agents that may damage the repeller