Sensitivity and frequency: Rotate the left rotary knob to adjust the sensitivity and range of the PIR sensor (5-8m). Rotate the right knob to adjust the ultrasonic frequency (16khz-60khz). It can be adjusted according to the needs and the animal species. Range: Within 5-8m, the cat repellent works. PIR detects at an angle of 110° (horizontal) and 60° (vertical). Practical: The waterproof level is IPX4, which can be used rainy days to provide a better product experience. The built-in bars have three height-adjustable sections. The rods are made of aluminum alloy and plastic and are of good quality. Can also be hung high. Power supply: and USB charging is a backup charging method. When the cat repellent is working, the flame lamp mode will automatically turn on at night and automatically turn off during the day, which can drive away deer and other wild animals. Suitable for garage, garden, roof, sandbox and patio. Also suitable for wild camping. Can drive away cats, dogs, rats, mink,