Solar Powered & WaterproofThe latest upgraded waterproof ultrasonic repeller supports USB and solar powered (3 AA rechargeable batteries are included). Made of durable ABS and aluminum materials, corrosion resistant, safe and chemical free, IP65 waterproof, rainproof. No radiation, chemicals or odors, safe for humans and our pets. Protect your garden all dayThe cat alarm uses ultrasonic waves to conduct the cats and other animals (such as dogs, cats, mice, voles, skunks, raccoons, foxes, birds) throughout the day. As a bird repellent, it can emit powerful flashes at night to drive away unwanted wild animals such as pigeons, owls, crows, bats. Humanity and protection of environmentPowerful ultrasonic wave with siren, equipped with infrared motion sensor, different frequencies to drive all kinds of animals, only for humanitarian driving, no chemicals that threaten the health of humans and pets, and will not cause threatening harm to animals. Wide Coverage Cat RepellentEquipped with PIR motion sensor, the detection angle is 110 degrees and the distance can be 8 m (up to 230 square meters). it will automatically send 12.5-25KHz ultrasonic frequency, give strong flash and alarm. The volume of the bionic sonic alarm is continuously adjustable from 3 tones, dog, gun and eagle. day: ultrasonic + sonic + no flash, night: ultrasonic + flash + no sound. Easy to install: We must install the device in the direction the animal is coming from and prevent the repeller from being overwhelmed or blocked by objects. The correct frequency depends on different animals. Remember to fully charge the device with the USB cable before first use or after prolonged use. Please fully charge the battery before first use to extend battery life. (requires 6 hours)