Please read the operating procedures carefully before use!! Gear description: 1.Left gear: Shutdown status 2.Middle gear: Indoor mode: variable frequency ultrasonic operation,(No sound. When the device is close to the ear, there will be a faint hissing sound. This phenomenon is normal, the equipment is operating normally and there are no malfunctions) 3.Right gear: Outdoor mode: frequency conversion ultrasonic operation+ LED strong flashing light,(built-in light sensor, automatically turns on at night; LED light does not flash during the day, but ultrasonic still runs normally) Applicable locations: 1. Indoor mode: Ultrasonic driving, used to drive away mice, insects, mosquitoes, and roaches (ineffective for domestic cats and dogs); 2. Outdoor mode: used to drive various animals according to different heights, such as driving different types of animals on trees, trunks, wooden stakes, rocks, walls, fences or other places; Before installing outdoor equipment, please switch to outdoor mode first Attention: 1.When adjusted to mode 1(Middle gear:Indoor mode), the human ear cannot capture ultrasonic sound. The device is still operating normally and there are no quality issues with the product. 2. Adjust to mode 2(Right gear:Outdoor mode) LED light with built-in light sensor. It does not work during the day and will automatically turn on at night.