The Passive Infrared (PIR) sensor can detect movement and trigger the ultrasonic speaker, which emits 13.5-45.5KHz ultrasonic noises that make pets uncomfortable and run away . Combined with the powerful LED flashing lights, it can create a hostile living environment for wild animals to prevent them from entering the sanctuary. Don’t worry about them destroying your garden, garden, nurseries, mansions and orchards or eating your plants, fruits and vegetables. It’s a humane way to scare away rats, cats, dogs, squirrels, foxes, martens and most other unwanted animals, which not only minimizes direct contact between humans and animals, but also protects the environment and maintains the balance between humans and nature. NOTE: 1. The passive infrared (PIR) sensor will turn red when working, but the red color will become weaker during the day under sunlight, you can see it clearly in a dark environment; 2. Each mode is designed to cut different animals with different frequency levels, you
