Cat animal repellent is powered by solar energy and does not require batteries. It is suitable for places exposed to direct sunlight for a long time. If the LED lights up red, it means the device is working! If the insect repellent continues to make noise but has no repellent effect, please let the insect repellent absorb solar energy in time to charge it. Solar Ultrasonic Cat Repellent for Garden Animals and Farms Before using it for the first time! Please put the insect repellent in the sun for 7-8 hours to absorb enough solar energy to operate the device. Install animal repellent ultrasonic scanner in a place where animals move frequently and in the corresponding direction where animals often come. Maximum detection range: 5-9m, infrared range: 110°. Special attention: Please keep the insect repellent and the animal in the same horizontal position, otherwise there will be no repellent effect! IPX44 waterproof It can be installed outdoors (yard, garden, farm) as an animal repellent