1. Infrared Induction: Electronic animal repeller adopts infrared induction. When the infrared sensor detects that the animal has moved away, the LED indicator will automatically turn off. 2. PIR Motion Detector: When it senses that there is a moving animal in the detection range, it will automatically send out a sound wave frequency to drive the animal away and the LED indicator lights up accordingly. 3. Adjustable Frequency: Dog repeller adds light flashing, sound, frequency adjustment, and sensitivity adjustment functions to drive animals more targeted and better. 4. Safe to Use: Animal repellent just drives away animals without any chemicals, it emits ultrasonic frequency to drive them away without any harm to human body. 5. Small Portable: The solar animal repeller is a portable design that can be installed anywhere in your home, garden, or yard, and can be used with low voltage power and batteries.