Two Repelling Methods - Ultrasonic and LED Light - Depending on the selected frequency, the Cat Repeller can release pet-hated ultrasonic or LED flash to repel animals, such as cats, dogs, squirrels, deer, bears, birds and other animals. It is an important partner to protect your garden. 5 frequency levels from 0 to 5 (0 being off) for different animals. The sensitivity adjusts the size of the detection range up to 8-9 meters. This repeller has a detection angle of 120 and a maximum distance of 8-9 meters. This configuration of two combinations can therefore protect a small garden in general. If you have different needs, you can also purchase one of our individual packages. The ultrasonic cat repellent is equipped with solar panels, which can be charged by solar energy in the sun; or it can be charged by USB, which is more eco-friendly and energy-saving. Ultrasonic repeller will not harm animals, but scare them away. When the red light is on, it detects where the animal is. If it is not on, it is no longer in the detection range.