Infrared Sensor: The nose of the owl repeller is an infrared sensor (PIR), capable of detecting animals of all sizes. The effective area covers an arc of 120 degrees and a distance of up to 30 feet (10 m). Once the pets enter within 30 feet, the motion sensor will emit ultrasonic waves and the LED light will make the pet feel uncomfortable and flee. Ultrasonic Protection: The dog repellent only emit 13.5kHz-45.5kHz ultrasonic wave, which is harmless to human body and harmless to human body. At the same time, it does not contain chemicals and dangerous products. It will only drive animals without damaging them. The humanized design will not harm your cats, dogs or other pets. Ultrasonic + strong flashing LED + sound alarm: There are 14 powerful LED lights in the owl's eyes. As for his mouth, it's an ultrasonic transmitter. When the external repeller detects movement and body heat, it emits a mixture of ultrasound of different waves, strong flashing lights and audible alarm to scare animals away. There is no danger to humans or animals. USB charging and solar energy: There is a solar panel on the owl's head. Let the owl absorb the energy when there is sunshine. Besides, it is equipped with a 2000mAh rechargeable lithium battery. You can also charge the ultrasonic repeller via the USB power supply. 5 Adjustable Modes: Irregular and variable frequency makes it more efficient to hunt the most aggressive animals that can adapt and become immune by a particular frequency band. IP66 waterproof and easy to install: this repeller for cat is waterproof IP66. It is able to withstand normal rain. Note: If there are thunderstorms or bad weather, it is recommended to take it indoors. Can be installed anywhere in the house, garden or patio, gardens, patios, driveways, fields, lawns, edges, garages, farms and any