How It WorksR&eacute; The outdoor cat pulsing device has a built-in PIR motion sensor, which could detect animals of all sizes, once an animal comes to your door. range and triggers an infrared detector, the motion sensor emits ultrasonic waves and the LED lighting makes the pet feel unwell. feel comfortable and run away, Sound waves will not affect your family and pets, Harmless to humans, but recommended for use. to place it at outside. 5 Adjustable ModesOutdoor cat repellent can be used anywhere. to repel many types of animals. Mode 1-3 uses ultrasonic waves with a frequency of 13.5 KHZ at 45.5 KHZ to keep animals away. Mode 4 is a way to sound an alarm and a powerful LED flashlight, effectively scaring away animals. Mode 5 is mode 1-4 operating at the same time, maximizing animal repelling and territory alarm functions. < span class=a-list-item>Wide Coverage Area Outdoor cat ultrasound detection distance: 10m(30ft), Infrared detection angle: 120 degrees, For best results , it is recommended Place animal repellents every 70 feet on the lawn. Note: Recommended Use USB for the first time for a full charge. USB Charging &amp; Solar EnergyUltrasonic cat repellent equipped with With a solar panel, install it in a sunny place, can charge the built-in battery at home. Any time, you can also charge the ultrasonic cat via USB power supply in cloudy or rainy weather, fully charge and keep going. work 5 to; 7 days. IP65 Waterproof, Easy to install. installAnti cat ultrasonic solar made &agrave; Made from high quality ABS and PVC materials, not easy to corrode, provides good waterproof protection performance, you can use it with peace of mind. even in bad weather like rain. It can be installed in gardens, orchards, farms, courtyards, vegetable gardens, lawns, fields and all outdoor spaces.