about this project HOW IT WORKS: Our solar repeller has a built-in sensitive PIR motion sensor. The maximum horizontal angle of the infrared sensing range is 110, and the sensing distance is 6-8 meters. When a moving animal is detected within the detection range, it will automatically send out sound waves to drive away the animal, and the LED indicator will light up accordingly. Solar Ultrasonic Repeller: Our solar ultrasonic repellent can adjust sensitivity and frequency. The 5 gear frequency functions are: 1 gear: 13.5KHZ-20KHZ, mainly for mice, dogs, rabbits, foxes, minks, etc. 2nd file: 15KHZ-25KHZ, mainly for cats, raccoons, badgers, skunks, etc. 3rd gear: 25KHZ-34.5KHZ, mainly for bats, birds, rodents, etc. 4 gears: alarm and strong red LED. 5 gears: all functions of gears 1-4 take effect at the same time. Two Charging Modes: Using high quality solar panels. Our insect repellent can work continuously in a sunny place. When the weather hits, you can take it indoors and charge it with USB. STURDY AND DURABLE: Our insect repellent is made of high-quality materials. Rugged and waterproof for inclement weather. EASY INSTALLATION: Simply assemble the support pole. Please Note: Before inserting the repellent into the ground, please dig a hole before inserting to avoid damage.