1. Upgraded Design: The builtin motion detection sensor is highly sensitive and will trigger at an angle of 110 degrees and 40 feet distance range, for maximum performance. The PIR sensor and light diode flash detects motion and triggers the ultrasonic speakers emitting a tone that chases away common outdoor pests like dogs, cats, raccons, mice, skunks, squirrels and more. 2. Solar powered : The animal repeller is made of waterproofdustproof material, which can work all yearround and in virtually all weather conditions. With a solar panel on the top of the device, it can be charged by solar energy, no need to replace the battery, which can be used for a long time. 3. Friendly Effective animal repeller: Solar Animal Repeller repels animals by emitting ultrasonic sound, RIP sensor and LED flashing light without any chemicals. Will not have any harm to the human body. It is a and humane way to keep unwanted animals away. 4. Easy to install: Solar animal repellent is very easy to install and can be assembled in one minute. Then you can insert the solar animal repeller into the ground, or hang it on trees, fences, walls and other objects. For result, keep the repeller head roughly 910 inches above ground. 5. Notice: Some animals may not respond immediately and may need to wait between one and four weeks for it to work.