Effective range: The ultrasonic frequency of this bird repellent is adjustable from 16KHZ-25KHZ, and the effective range is 5000 square feet (about 400 square meters), which can comprehensively repel pests and beasts around the house. Powerful function: The ultrasonic insect repeller can provide 24-hour protection for your yard or farm, three working modes, Infrared sensing mode: Can detect straight hot objects within a distance of 1 to 20 m. Continuous mode: No need for infrared induction, it can continuously emit ultrasonic waves. Scanning method: Ultrasonic waves are gradually emitted from low frequency to high frequency. [Two Power Modes]: The animal disperser is powered by two 4C batteries or AC power. The removable base protects the machine from moisture and damage. (Batteries not included) Real-Time Protection: Unique sealing and design allow you to place it anywhere. Protect your garden, lawn, shed, loft, farm, barn, warehouse, yard or any other area that requires safe and effective pest control day and night. Easy to use : This is a harmless repellent with multiple installation options. Whether it's on a wall or fence, or simply inserted into the ground, you can keep out rodents, gulls, insects, mice, birds, bears, deer, and dogs. Our powerful ultrasonic animal repellent will provide safe and effective protection in any weather condition! Product material: ABS Power: 3.6W Rated frequency: 15-20k (HZ) Rated voltage: 110V-240V Product dimensions: length 16.8 cm, width 8.3 cm, height 13.6 cm Weight: 0.6 kg Package list: Device X 1 Screw pack X 1 Adapter X 1