This device, powered by solar to conserve energy , has four speakers ultrasonic sound to scare away intruders such as tomcat, mouse, bird, skunk, rat, gopher, mice, chipmunk, goose, geese, duck, etc. Infrared PIR motion sensor can detect moving animals around. Unsealed design allows it to work under variety weather, water resistant,, windproof, sun protective and rustless. Feature Four Speakers Ultrasonic Sound Four speakers enhance powerful ultrasonic sound to scare away animals. Equipped with an infrared motion sensor, the ultrasonic will be activated as soon as animals enter the protected range. Five Frequency Levels Five frequency levels can be adjusted or combined to detect moving object with the PIR motion sensor. Different levels are designed to drive different animals. PIR motion detection & LED Flash light This is an infrared sensor that constantly outputs signals. When a moving animal is detected in the detection range, it automatically emits a sound wave to drive the animal