🌞[Spacing-mini">Ultrasonic: Dog repellents only emit ultrasonic waves from 13.5 kHz to 45.5 kHz, which is safe for the human body. At the same time, it does not contain any chemicals or dangerous products. It will keep animals away without harming them /li> 🌞[Infrared Sensor]: The nose of the owl repellent is an infrared sensor (PIR), which can detect animals of all sizes. The effective area covers an arc of 120 degrees and a distance of up to 120 degrees. Once pets enter a radius of 10 meters, the motion sensor emits ultrasonic waves and the LED lighting makes the pet feel comfortable scaring them away. 🌞【Ultrasonic + Strong Flashing LED + Audible Alarm.】 There are 14 powerful LED lights in the eyes of the device. As for the mouth, it is a radio transmitter. ultrasound. When the outdoor repellent detects movement and body heat, it emits a mixture of ultrasound of different waves, strong flashing lights and a loud alarm to scare away animals. There is no danger to people or