Dog, Cat and Wild Animal Deterrent - Powerful ultrasonic sound combined with PIR motion sensor, humanely repels unwanted wild animals, dogs, cats, foxes, rodents, squirrels and some insects. PIR Infrared Sensor - Our cat ultrasound device is equipped with a PIR sensor. An infrared sensor that emits signals continuously. When it detects that a moving animal is within the detection range, it will automatically emit a sound wave frequency to lead the animal. Solar charging and IP44 waterproof - A solar panel is placed above the mouse repellent which can be charged by solar energy in the sun, Efficiently charged to maintain long standby time all day. Its waterproof rating reaches IPX44, can work effectively all year round in almost all weather conditions. Eco-Friendly and Versatile - Powerful outdoor cat repellents contain no chemicals or pesticides, safe for humans and pets. pets. Ideal for hunting cats, dogs, rodents and other unwanted animals. Ultrasonic animal repeller ideal for