?Ultrasonic repellent? : This cat repellent works with ultrasound and LED lights to drive away dogs, cats, martens, raccoons, mice, birds, foxes, rodents, martens, game animals, etc. The device works without chemicals and is harmless to humans and animals. ?Motion detector? : dual speaker design with enlarged degree for sound wave emission, acoustic coverage up to 5000 sq.ft; the right and left angle of the infrared sensor is 110 degrees, the up and down angle is 55 degrees, as long as the animals are close within 30 feet of the ultrasonic repellent will be activated by the detector of movement. ?Waterproof and weatherproof? : Unique seal and waterproof design allows you to install it anywhere. The animal repellent can be mounted in the ground or on the wall or directly placed on a flat surface. Ideal for outdoors such as gardens, construction sites, terraces, garages, driveways, terraces, farms, ponds but also attics, etc. 2 charging modes and 5 Adjustable Modes: Built-in 3 AA