Charging by Solar Energy, USB or Battery - 1. When the solar power is sufficient, you can charge cat repellent by the solar panel placed on the top of the device. 2. Equipped with USB interface and USB charging cable, you can charge the cat repellent via USB. Outdoor cat repellent - outdoor cat repellent is waterproof (waterproof index: IP66). This means it can withstand normal rain from all directions. Noticed: Although the animal repellent is waterproof, in order to maximize the life of the product, if it is raining hard or the weather is very bad, it is recommended to bring it inside. Two Methods of Repelling - Ultrasonic and LED Light - Depending on the selected frequency, the Cat Repellent can release animal-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. Adjustable Sensitivity and Frequency - You can adjust the sensitivity and frequency according to your needs, etc. Please read the user manual for more information. Note: In most cases, the recommended frequency is the most effective repelling frequency. Environmental Protection - cat repellent uses ultrasonic waves and flashing LEDs to repel animals without harming animals. animals or cause environmental damage. You can place it anywhere you want, for example: garden, orchard, farm, etc.