Sensitive Ultrasonic DesignThe ultrasonic outdoor cat repeller features a speaker design with passive infrared sensor (PIR). When it detects that the moving animal is within the detection range, it automatically sounds the frequency of the sound, ultrasonic animal repellent repels intruding animals by stimulating their central nervous system.How it worksThe sounds generated by the device in the ultrasonic range (13KHz-60KHz) are perceived as unpleasant by animals in the detection area and ensure that the animal moves away from this area. The sounds are harmless to humans and animals.RangeRANGE: Animal fright has a motion detector with a detection range of 120 and a range of 5-8m. The sensitivity of the motion detector is infinitely adjustable. Note: It is recommended to use the device for the first time to get a full charge.Safety and Environmental ProtectionThe ultrasonic outdoor cat repellent is equipped with a solar panel that can be charged via solar energy. features a dual speaker design that uses ultrasound to drive away animals, environmental protection, no chemicals, safe for humans and animals.Waterproof and Easy to InstallThis cat repellent is waterproof. It is able to withstand normal rain. It can be installed anywhere in the home, garden or patio, garden, yard, driveways, fields, lawns, edges, garages, farms and all outdoor areas.