1. Infrared sensing: The electronic mouse repeller uses infrared sensing. When the infrared sensor detects that the animal walks away, the LED indicator automatically turns off. 2. PIR motion detector: When it senses a moving animal within the detection range, it will automatically emit a sonic frequency to drive the animal away, and the LED indicator lights up accordingly. 3. Adjustable frequency: The dog repeller has added light flashing, sound, frequency adjustment and sensitivity adjustment functions, which makes the animal repellent more targeted and effective. 4. Safe to use: The mouse repeller can drive away animals without any chemicals. It emits ultrasonic frequencies to drive them away, which does not cause any harm to the human body. 5. Compact and portable: The solar mouse repeller adopts a portable design and can be installed anywhere in the home, garden or yard. It can use low-voltage power supply and batteries.